{"id":4725,"date":"2026-01-16T15:40:30","date_gmt":"2026-01-16T07:40:30","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=4725"},"modified":"2026-01-16T15:40:43","modified_gmt":"2026-01-16T07:40:43","slug":"%d9%83%d9%8a%d9%81-%d9%8a%d9%85%d9%83%d9%86%d9%83-%d8%a7%d8%b3%d8%aa%d9%83%d8%b4%d8%a7%d9%81-%d8%a3%d8%b9%d8%b7%d8%a7%d9%84-%d8%a7%d9%84%d8%b3%d8%ae%d9%88%d9%86%d8%a9-%d8%a7%d9%84%d8%b2%d8%a7%d8%a6","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/%d9%83%d9%8a%d9%81-%d9%8a%d9%85%d9%83%d9%86%d9%83-%d8%a7%d8%b3%d8%aa%d9%83%d8%b4%d8%a7%d9%81-%d8%a3%d8%b9%d8%b7%d8%a7%d9%84-%d8%a7%d9%84%d8%b3%d8%ae%d9%88%d9%86%d8%a9-%d8%a7%d9%84%d8%b2%d8%a7%d8%a6\/","title":{"rendered":"\u0643\u064a\u0641 \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u0643\u0634\u0627\u0641 \u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629 \u0648\u062a\u0644\u0641 \u0627\u0644\u0639\u0632\u0644 \u0641\u064a \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636\u061f"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">How Can You Troubleshoot Overheating and Insulation Damage in Underground Mining Cables?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4f55\u6392\u67e5\u5730\u4e0b\u7926\u7528\u96fb\u7e9c\u904e\u71b1\u548c\u7d55\u7de3\u640d\u58de\u6545\u969c\uff1f<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"807977\" data-has-transparency=\"false\" style=\"--dominant-color: #807977;\" loading=\"lazy\" decoding=\"async\" width=\"653\" height=\"628\" sizes=\"auto, (max-width: 653px) 100vw, 653px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-548-653x628.avif\" alt=\"\" class=\"wp-image-4726 not-transparent\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-548-653x628.avif 653w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-548-300x289.avif 300w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-548-768x739.avif 768w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-548-400x385.avif 400w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-548.avif 798w\" \/><\/figure>\n\n\n\n<!DOCTYPE html>\n<html lang=\"ar\" dir=\"rtl\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <meta name=\"description\" content=\"\u0643\u064a\u0641 \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u0643\u0634\u0627\u0641 \u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629 \u0648\u062a\u0644\u0641 \u0627\u0644\u0639\u0632\u0644 \u0641\u064a \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636\u061f - How to Troubleshoot Overheating and Insulation Damage in Underground Mining Cables - \u5982\u4f55\u6392\u67e5\u5730\u4e0b\u7926\u7528\u96fb\u7e9c\u904e\u71b1\u548c\u7d55\u7de3\u640d\u58de\u6545\u969c\uff1f | Anhui Feichun Special Cable\">\n    <meta name=\"keywords\" content=\"mining cable overheating, insulation damage troubleshooting, thermal imaging cable, insulation resistance test, partial discharge detection, MSHA cable testing, IEC 60502, underground cable fault, \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646, \u7926\u7528\u96fb\u7e9c\u904e\u71b1\">\n    <title>\u0627\u0633\u062a\u0643\u0634\u0627\u0641 \u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629 \u0648\u062a\u0644\u0641 \u0627\u0644\u0639\u0632\u0644 \u0641\u064a \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646 | Mining Cable Troubleshooting | \u7926\u7528\u96fb\u7e9c\u6545\u969c\u6392\u67e5 &#8211; Anhui Feichun<\/title>\n    \n    <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n    <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n    <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Noto+Sans+Arabic:wght@400;600;700&#038;family=Noto+Sans+TC:wght@400;500;700&#038;family=Inter:wght@400;500;600;700&#038;family=JetBrains+Mono:wght@400;500&#038;display=swap\" rel=\"stylesheet\">\n    \n    <style>\n        :root {\n            --bg-primary: #080c12;\n            --bg-secondary: #0f1419;\n            --bg-tertiary: #171f2a;\n            --bg-card: #131b25;\n            --text-primary: #e8edf3;\n            --text-secondary: #8fa3b8;\n            --accent-gold: #e5a832;\n            --accent-copper: #d4763c;\n            --accent-blue: #3d8fd9;\n            --accent-green: #22c55e;\n            --accent-red: #ef4444;\n            --accent-purple: #a855f7;\n            --accent-cyan: #06b6d4;\n            --accent-orange: #f97316;\n            --border-color: #283545;\n            --table-header: #182230;\n            --table-row-alt: #111920;\n        }\n\n        *, *::before, *::after {\n            box-sizing: border-box;\n            margin: 0;\n            padding: 0;\n        }\n\n        html {\n            scroll-behavior: smooth;\n            font-size: 16px;\n        }\n\n        body {\n            font-family: 'Noto Sans Arabic', 'Inter', 'Noto Sans TC', sans-serif;\n            background-color: var(--bg-primary);\n            color: var(--text-primary);\n            line-height: 1.85;\n            min-height: 100vh;\n        }\n\n        .container {\n            width: 100%;\n            max-width: 1480px;\n            margin: 0 auto;\n            padding: 0 26px;\n        }\n\n        header {\n            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);\n            border-bottom: 1px solid var(--border-color);\n            padding: 18px 0;\n            min-height: 76px;\n        }\n\n        .header-content {\n            display: flex;\n            justify-content: space-between;\n            align-items: center;\n            flex-wrap: wrap;\n            gap: 14px;\n        }\n\n        .logo {\n            font-size: 1.15rem;\n            font-weight: 700;\n            color: var(--accent-gold);\n        }\n\n        .logo-cn {\n            font-family: 'Noto Sans TC', sans-serif;\n            font-size: 0.82rem;\n            color: var(--text-secondary);\n            display: block;\n        }\n\n        .hero {\n            background: linear-gradient(145deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);\n            padding: 52px 0;\n            border-bottom: 1px solid var(--border-color);\n            min-height: 350px;\n        }\n\n        .hero-title {\n            font-size: clamp(1.55rem, 3.5vw, 2.25rem);\n            font-weight: 700;\n            color: var(--text-primary);\n            margin-bottom: 14px;\n            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var(--text-secondary);\n            display: block;\n            margin-top: 4px;\n        }\n\n        .section-title-sub.en {\n            font-family: 'Inter', sans-serif;\n            direction: ltr;\n            text-align: right;\n        }\n\n        .section-title-sub.cn {\n            font-family: 'Noto Sans TC', sans-serif;\n        }\n\n        p {\n            margin-bottom: 15px;\n            text-align: justify;\n        }\n\n        .text-en {\n            font-family: 'Inter', sans-serif;\n            direction: ltr;\n            text-align: left;\n            color: var(--text-secondary);\n            font-size: 0.86rem;\n            padding: 14px 16px;\n            background: var(--bg-tertiary);\n            border-radius: 8px;\n            margin: 13px 0;\n            border-right: none;\n            border-left: 3px solid var(--accent-blue);\n        }\n\n        .text-cn {\n            font-family: 'Noto Sans TC', sans-serif;\n            direction: ltr;\n            text-align: left;\n            color: var(--text-secondary);\n            font-size: 0.86rem;\n            padding: 14px 16px;\n            background: var(--bg-tertiary);\n            border-radius: 8px;\n            margin: 13px 0;\n            border-right: none;\n            border-left: 3px solid var(--accent-green);\n        }\n\n        .table-container {\n            overflow-x: auto;\n            margin: 22px 0;\n            border-radius: 10px;\n            border: 1px solid var(--border-color);\n        }\n\n        table {\n            width: 100%;\n            border-collapse: collapse;\n            min-width: 680px;\n            table-layout: fixed;\n        }\n\n        th, td {\n            padding: 12px 13px;\n            text-align: center;\n            border-bottom: 1px solid var(--border-color);\n            font-size: 0.85rem;\n        }\n\n        th {\n            background: var(--table-header);\n            color: var(--accent-gold);\n            font-weight: 600;\n            white-space: nowrap;\n        }\n\n        tr:nth-child(even) {\n            background: var(--table-row-alt);\n        }\n\n        tr:hover {\n            background: var(--bg-tertiary);\n        }\n\n        .param-value {\n            font-family: 'JetBrains Mono', 'Inter', monospace;\n            color: var(--accent-blue);\n            direction: ltr;\n            text-align: center;\n            font-size: 0.83rem;\n        }\n\n        .severity-critical {\n            color: var(--accent-red);\n            font-weight: 600;\n        }\n\n        .severity-high {\n            color: var(--accent-orange);\n            font-weight: 600;\n        }\n\n        .severity-moderate {\n            color: var(--accent-gold);\n            font-weight: 600;\n        }\n\n        .severity-low {\n            color: var(--accent-green);\n            font-weight: 600;\n        }\n\n        .spec-grid {\n            display: grid;\n            grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));\n            gap: 16px;\n            margin: 22px 0;\n        }\n\n        .spec-card {\n            background: var(--bg-card);\n            border: 1px solid var(--border-color);\n            border-radius: 10px;\n            padding: 18px;\n            min-height: 150px;\n        }\n\n        .spec-card-title {\n            color: var(--accent-gold);\n            font-weight: 600;\n            margin-bottom: 9px;\n            font-size: 0.9rem;\n        }\n\n        .spec-card-value {\n            font-family: 'JetBrains Mono', 'Inter', sans-serif;\n            font-size: 1.55rem;\n            font-weight: 700;\n            color: var(--accent-blue);\n            direction: ltr;\n        }\n\n        .spec-card-unit {\n            font-size: 0.78rem;\n            color: var(--text-secondary);\n            margin-top: 4px;\n        }\n\n        .fault-type-box {\n            background: var(--bg-card);\n            border: 1px solid var(--border-color);\n            border-radius: 10px;\n            padding: 18px;\n            margin: 18px 0;\n        }\n\n        .fault-type-box.type-thermal {\n            border-top: 4px solid var(--accent-red);\n        }\n\n        .fault-type-box.type-insulation {\n            border-top: 4px solid var(--accent-orange);\n        }\n\n        .fault-type-box.type-mechanical {\n            border-top: 4px solid var(--accent-purple);\n        }\n\n        .fault-type-title {\n            color: var(--accent-gold);\n            font-weight: 700;\n            font-size: 1.15rem;\n            margin-bottom: 11px;\n            display: flex;\n            align-items: center;\n            gap: 10px;\n            flex-wrap: wrap;\n        }\n\n        .fault-badge {\n            background: var(--accent-red);\n            color: var(--bg-primary);\n            padding: 3px 9px;\n            border-radius: 4px;\n            font-size: 0.73rem;\n            font-weight: 600;\n        }\n\n        .fault-badge.orange {\n            background: var(--accent-orange);\n        }\n\n        .fault-badge.purple {\n            background: var(--accent-purple);\n        }\n\n        .diagnostic-box {\n            background: var(--bg-tertiary);\n            border: 1px solid var(--accent-gold);\n            border-radius: 8px;\n            padding: 14px 18px;\n            margin: 14px 0;\n        }\n\n        .diagnostic-item {\n            display: flex;\n            align-items: flex-start;\n            padding: 10px 0;\n            border-bottom: 1px dashed var(--border-color);\n            font-size: 0.88rem;\n            gap: 12px;\n        }\n\n        .diagnostic-item:last-child {\n            border-bottom: none;\n        }\n\n        .diagnostic-step {\n            color: var(--accent-gold);\n            font-weight: 700;\n            min-width: 32px;\n            font-family: 'JetBrains Mono', monospace;\n        }\n\n        .diagnostic-desc {\n            flex: 1;\n        }\n\n        .comparison-bar-container {\n            margin: 18px 0;\n        }\n\n        .comparison-item {\n            margin-bottom: 14px;\n        }\n\n        .comparison-label {\n            display: flex;\n            justify-content: space-between;\n            margin-bottom: 5px;\n            font-size: 0.88rem;\n            direction: ltr;\n        }\n\n        .comparison-bar {\n            height: 22px;\n            background: var(--bg-tertiary);\n            border-radius: 11px;\n            overflow: hidden;\n        }\n\n        .comparison-fill {\n            height: 100%;\n            border-radius: 11px;\n        }\n\n        .fill-thermal { background: linear-gradient(90deg, #ef4444 0%, #dc2626 100%); }\n        .fill-insulation { background: linear-gradient(90deg, #f97316 0%, #ea580c 100%); }\n        .fill-mechanical { background: linear-gradient(90deg, #a855f7 0%, #7c3aed 100%); }\n        .fill-environmental { background: linear-gradient(90deg, #06b6d4 0%, #0891b2 100%); }\n\n        .warning-box {\n            background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.05) 100%);\n            border: 1px solid var(--accent-red);\n            border-radius: 10px;\n            padding: 18px;\n            margin: 22px 0;\n        }\n\n        .warning-title {\n            color: var(--accent-red);\n            font-weight: 700;\n            font-size: 1.05rem;\n            margin-bottom: 10px;\n        }\n\n        .info-box {\n            background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);\n            border: 1px solid var(--accent-cyan);\n            border-radius: 10px;\n            padding: 18px;\n            margin: 22px 0;\n        }\n\n        .info-title {\n            color: var(--accent-cyan);\n            font-weight: 700;\n            font-size: 1.05rem;\n            margin-bottom: 10px;\n        }\n\n        .formula-box {\n            background: var(--bg-tertiary);\n            border: 1px solid var(--accent-gold);\n            border-radius: 8px;\n            padding: 14px 18px;\n            margin: 14px 0;\n            text-align: center;\n        }\n\n        .formula {\n            font-family: 'JetBrains Mono', monospace;\n            font-size: 1.08rem;\n            color: var(--accent-gold);\n            direction: ltr;\n        }\n\n        .formula-desc {\n            font-size: 0.83rem;\n            color: var(--text-secondary);\n            margin-top: 7px;\n        }\n\n        .checklist-box {\n            background: var(--bg-card);\n            border: 1px solid var(--border-color);\n            border-radius: 10px;\n            padding: 18px;\n            margin: 18px 0;\n        }\n\n        .checklist-title {\n            color: var(--accent-gold);\n            font-weight: 700;\n            font-size: 1rem;\n            margin-bottom: 14px;\n        }\n\n        .checklist-item {\n            display: flex;\n            align-items: flex-start;\n            padding: 8px 0;\n            font-size: 0.88rem;\n            gap: 10px;\n        }\n\n        .checklist-marker {\n            color: var(--accent-green);\n            font-weight: 700;\n            min-width: 20px;\n        }\n\n        .references {\n            background: var(--bg-secondary);\n            border: 1px solid var(--border-color);\n            border-radius: 10px;\n            padding: 22px;\n            margin: 28px 0;\n        }\n\n        .references h3 {\n            color: var(--accent-gold);\n            margin-bottom: 14px;\n            font-size: 1.05rem;\n        }\n\n        .reference-list {\n            list-style: none;\n        }\n\n        .reference-list li {\n            padding: 9px 0;\n            border-bottom: 1px solid var(--border-color);\n            font-size: 0.83rem;\n        }\n\n        .reference-list li:last-child {\n            border-bottom: none;\n        }\n\n        .reference-list a {\n            color: var(--accent-blue);\n            text-decoration: none;\n            font-family: 'Inter', sans-serif;\n            direction: ltr;\n            display: inline-block;\n        }\n\n        .reference-list a:hover {\n            text-decoration: underline;\n        }\n\n        .ref-org {\n            color: var(--text-secondary);\n            font-size: 0.75rem;\n            display: block;\n            margin-top: 2px;\n        }\n\n        .standards-badges {\n            display: flex;\n            flex-wrap: wrap;\n            gap: 9px;\n            margin: 18px 0;\n        }\n\n        .badge {\n            background: var(--bg-tertiary);\n            border: 1px solid var(--border-color);\n            padding: 6px 12px;\n            border-radius: 6px;\n            font-family: 'Inter', sans-serif;\n            font-size: 0.78rem;\n            color: var(--text-primary);\n            direction: ltr;\n        }\n\n        .badge-gold {\n            border-color: var(--accent-gold);\n            color: var(--accent-gold);\n        }\n\n        .badge-red {\n            border-color: var(--accent-red);\n            color: var(--accent-red);\n        }\n\n        .badge-green {\n            border-color: var(--accent-green);\n            color: var(--accent-green);\n        }\n\n        .contact-section {\n            background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);\n            border: 1px solid var(--border-color);\n            border-radius: 12px;\n            padding: 28px;\n            margin: 36px 0;\n        }\n\n        .contact-grid {\n            display: grid;\n            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));\n            gap: 20px;\n        }\n\n        .contact-item {\n            display: flex;\n            align-items: flex-start;\n            gap: 11px;\n        }\n\n        .contact-icon {\n            width: 40px;\n            height: 40px;\n            min-width: 40px;\n            background: var(--accent-gold);\n            border-radius: 8px;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            color: var(--bg-primary);\n            font-weight: bold;\n            font-size: 1.05rem;\n        }\n\n        .contact-info a {\n            color: var(--accent-blue);\n            text-decoration: none;\n            font-family: 'Inter', sans-serif;\n            direction: ltr;\n            display: block;\n            word-break: break-all;\n        }\n\n        .contact-info a:hover {\n            text-decoration: underline;\n        }\n\n        .contact-label {\n            font-size: 0.78rem;\n            color: var(--text-secondary);\n            margin-bottom: 3px;\n        }\n\n        footer {\n            background: var(--bg-secondary);\n            border-top: 1px solid var(--border-color);\n            padding: 28px 0;\n            margin-top: 44px;\n        }\n\n        .footer-content {\n            text-align: center;\n        }\n\n        .footer-company {\n            font-size: 1.05rem;\n            color: var(--accent-gold);\n            margin-bottom: 5px;\n        }\n\n        .footer-company-cn {\n            font-family: 'Noto Sans TC', sans-serif;\n            font-size: 0.84rem;\n            color: var(--text-secondary);\n        }\n\n        .footer-copy {\n            font-size: 0.74rem;\n            color: var(--text-secondary);\n            margin-top: 14px;\n        }\n\n        @media (max-width: 768px) {\n            .container {\n                padding: 0 14px;\n            }\n            \n            .hero {\n                padding: 32px 0;\n                min-height: auto;\n            }\n            \n            th, td {\n                padding: 9px 7px;\n                font-size: 0.76rem;\n            }\n            \n            .spec-grid {\n                grid-template-columns: 1fr;\n            }\n\n            .diagnostic-item {\n                flex-direction: column;\n                gap: 6px;\n            }\n        }\n    <\/style>\n<\/head>\n<body>\n    <header>\n        <div class=\"container\">\n            <div class=\"header-content\">\n                <div class=\"logo\">\n                    Anhui Feichun Special Cable Co., Ltd\n                    <span class=\"logo-cn\">\u5b89\u5fbd\u98db\u7d14\u7279\u7a2e\u96fb\u7e9c\u6709\u9650\u516c\u53f8<\/span>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/header>\n\n    <section class=\"hero\">\n        <div class=\"container\">\n            <h1 class=\"hero-title\">\u0643\u064a\u0641 \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u0643\u0634\u0627\u0641 \u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629 \u0648\u062a\u0644\u0641 \u0627\u0644\u0639\u0632\u0644 \u0641\u064a \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636\u061f<\/h1>\n            <p class=\"hero-subtitle hero-subtitle-en\">How Can You Troubleshoot Overheating and Insulation Damage in Underground Mining Cables?<\/p>\n            <p class=\"hero-subtitle hero-subtitle-cn\">\u5982\u4f55\u6392\u67e5\u5730\u4e0b\u7926\u7528\u96fb\u7e9c\u904e\u71b1\u548c\u7d55\u7de3\u640d\u58de\u6545\u969c\uff1f<\/p>\n            \n            <div class=\"standards-badges\">\n                <span class=\"badge badge-gold\">IEC 60502-1\/2<\/span>\n                <span class=\"badge badge-red\">IEEE 400.2<\/span>\n                <span class=\"badge\">MSHA 30 CFR Part 75<\/span>\n                <span class=\"badge badge-green\">IEC 60270<\/span>\n                <span class=\"badge\">IEEE 43<\/span>\n                <span class=\"badge\">IEC 60811<\/span>\n                <span class=\"badge\">ASTM D149<\/span>\n                <span class=\"badge\">NETA MTS<\/span>\n            <\/div>\n        <\/div>\n    <\/section>\n\n    <main>\n        <div class=\"container\">\n            \n            <section class=\"content-section\">\n                <div class=\"section-header\">\n                    <h2 class=\"section-title\">\n                        \u0645\u0642\u062f\u0645\u0629: \u062a\u062d\u062f\u064a\u0627\u062a \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629 \u0648\u062a\u0644\u0641 \u0627\u0644\u0639\u0632\u0644 \u0641\u064a \u0628\u064a\u0626\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646\n                        <span class=\"section-title-sub en\">Introduction: Overheating and Insulation Damage Challenges in Mining Environments<\/span>\n                        <span class=\"section-title-sub cn\">\u5c0e\u8a00\uff1a\u63a1\u7926\u74b0\u5883\u4e2d\u904e\u71b1\u548c\u7d55\u7de3\u640d\u58de\u7684\u6311\u6230<\/span>\n                    <\/h2>\n                <\/div>\n                \n                <p>\u062a\u064f\u0639\u062f \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629 \u0648\u062a\u0644\u0641 \u0627\u0644\u0639\u0632\u0644 \u0645\u0646 \u0623\u062e\u0637\u0631 \u0627\u0644\u0645\u0634\u0643\u0644\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0648\u0627\u062c\u0647 \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636\u060c \u062d\u064a\u062b \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0624\u062f\u064a \u0625\u0644\u0649 \u062d\u0631\u0627\u0626\u0642 \u0643\u0627\u0631\u062b\u064a\u0629 \u0648\u0627\u0646\u0642\u0637\u0627\u0639\u0627\u062a \u0625\u0646\u062a\u0627\u062c\u064a\u0629 \u0645\u0643\u0644\u0641\u0629 \u0648\u0625\u0635\u0627\u0628\u0627\u062a \u062e\u0637\u064a\u0631\u0629 \u0644\u0644\u0639\u0645\u0627\u0644. \u0648\u0641\u0642\u0627\u064b \u0644\u0625\u062d\u0635\u0627\u0626\u064a\u0627\u062a \u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0648\u0627\u0644\u0635\u062d\u0629 \u0641\u064a \u0627\u0644\u0645\u0646\u0627\u062c\u0645 \u0627\u0644\u0623\u0645\u0631\u064a\u0643\u064a\u0629 (MSHA)\u060c \u062a\u064f\u0639\u062f \u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0645\u0646 \u0627\u0644\u0623\u0633\u0628\u0627\u0628 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0644\u0644\u062d\u0631\u0627\u0626\u0642 \u0641\u064a \u0627\u0644\u0645\u0646\u0627\u062c\u0645 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636\u060c \u062d\u064a\u062b \u062a\u064f\u0633\u062c\u0644 \u0623\u0643\u062b\u0631 \u0645\u0646 200 \u062d\u0627\u062f\u062b\u0629 \u0633\u0646\u0648\u064a\u0627\u064b \u062a\u062a\u0639\u0644\u0642 \u0628\u0627\u0631\u062a\u0641\u0627\u0639 \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a.<\/p>\n\n                <p>\u062a\u062a\u0639\u0631\u0636 \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u0644\u0638\u0631\u0648\u0641 \u062a\u0634\u063a\u064a\u0644 \u0642\u0627\u0633\u064a\u0629 \u062a\u0634\u0645\u0644 \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0631\u062a\u0641\u0639\u0629 (40-50\u00b0C \u0645\u062d\u064a\u0637\u064a\u0629)\u060c \u0648\u0627\u0644\u0631\u0637\u0648\u0628\u0629 \u0627\u0644\u0639\u0627\u0644\u064a\u0629 (>90% RH)\u060c \u0648\u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0629 \u0628\u0634\u0643\u0644 \u0645\u0633\u062a\u0645\u0631\u060c \u0648\u0627\u0644\u0625\u062c\u0647\u0627\u062f \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a \u0645\u0646 \u0627\u0644\u0633\u062d\u0628 \u0648\u0627\u0644\u0627\u0646\u062d\u0646\u0627\u0621. \u064a\u062a\u0637\u0644\u0628 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0633\u0644\u0627\u0645\u0629 \u0647\u0630\u0647 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0646\u0638\u0627\u0645\u0627\u064b \u0645\u062a\u0643\u0627\u0645\u0644\u0627\u064b \u0644\u0644\u0645\u0631\u0627\u0642\u0628\u0629 \u0648\u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0648\u0642\u0627\u0626\u064a\u0629 \u0648\u0641\u0642\u0627\u064b \u0644\u0645\u0639\u0627\u064a\u064a\u0631 IEC 60502 \u0648IEEE 400.2 \u0648NETA MTS.<\/p>\n                \n                <div class=\"text-en\">\n                    <strong>English:<\/strong> Overheating and insulation damage are among the most dangerous problems facing underground mining cables, potentially leading to catastrophic fires, costly production interruptions, and serious worker injuries. According to U.S. Mine Safety and Health Administration (MSHA) statistics, electrical cable failures are a leading cause of fires in underground mines, with over 200 incidents annually related to cable overheating. Mining cables face harsh operating conditions including high ambient temperatures (40-50\u00b0C), high humidity (>90% RH), continuously varying loads, and mechanical stress from pulling and bending. Maintaining cable integrity requires an integrated system of monitoring and preventive maintenance according to IEC 60502, IEEE 400.2, and NETA MTS standards. The thermal degradation of EPR and XLPE insulation follows the Arrhenius equation, where every 10\u00b0C increase above rated temperature approximately halves the insulation&#8217;s service life. Understanding the root causes of overheating and implementing systematic diagnostic procedures is essential for preventing failures and ensuring safe, reliable power distribution in underground mining operations.\n                <\/div>\n                \n                <div class=\"text-cn\">\n                    <strong>\u7e41\u9ad4\u4e2d\u6587\uff1a<\/strong> \u904e\u71b1\u548c\u7d55\u7de3\u640d\u58de\u662f\u5730\u4e0b\u7926\u7528\u96fb\u7e9c\u9762\u81e8\u7684\u6700\u5371\u96aa\u554f\u984c\u4e4b\u4e00\uff0c\u53ef\u80fd\u5c0e\u81f4\u707d\u96e3\u6027\u706b\u707d\u3001\u4ee3\u50f9\u9ad8\u6602\u7684\u751f\u7522\u4e2d\u65b7\u548c\u56b4\u91cd\u7684\u5de5\u4eba\u50b7\u4ea1\u3002\u6839\u64da\u7f8e\u570b\u7926\u5c71\u5b89\u5168\u8207\u5065\u5eb7\u7ba1\u7406\u5c40\uff08MSHA\uff09\u7684\u7d71\u8a08\u6578\u64da\uff0c\u96fb\u7e9c\u6545\u969c\u662f\u5730\u4e0b\u7926\u5c71\u706b\u707d\u7684\u4e3b\u8981\u539f\u56e0\u4e4b\u4e00\uff0c\u6bcf\u5e74\u6709\u8d85\u904e200\u8d77\u8207\u96fb\u7e9c\u904e\u71b1\u76f8\u95dc\u7684\u4e8b\u6545\u3002\u7926\u7528\u96fb\u7e9c\u9762\u81e8\u60e1\u52a3\u7684\u904b\u884c\u689d\u4ef6\uff0c\u5305\u62ec\u9ad8\u74b0\u5883\u6eab\u5ea6\uff0840-50\u00b0C\uff09\u3001\u9ad8\u6fd5\u5ea6\uff08>90% RH\uff09\u3001\u6301\u7e8c\u8b8a\u5316\u7684\u8ca0\u8f09\u4ee5\u53ca\u62c9\u4f38\u548c\u5f4e\u66f2\u9020\u6210\u7684\u6a5f\u68b0\u61c9\u529b\u3002\u6839\u64daIEC 60502\u3001IEEE 400.2\u548cNETA MTS\u6a19\u6e96\uff0c\u7dad\u8b77\u96fb\u7e9c\u5b8c\u6574\u6027\u9700\u8981\u4e00\u500b\u96c6\u6210\u7684\u76e3\u63a7\u548c\u9810\u9632\u6027\u7dad\u8b77\u7cfb\u7d71\u3002EPR\u548cXLPE\u7d55\u7de3\u7684\u71b1\u964d\u89e3\u9075\u5faa\u963f\u502b\u5c3c\u70cf\u65af\u65b9\u7a0b\uff0c\u984d\u5b9a\u6eab\u5ea6\u4ee5\u4e0a\u6bcf\u5347\u9ad810\u00b0C\uff0c\u7d55\u7de3\u7684\u4f7f\u7528\u58fd\u547d\u5927\u7d04\u6e1b\u534a\u3002\u4e86\u89e3\u904e\u71b1\u7684\u6839\u672c\u539f\u56e0\u4e26\u5be6\u65bd\u7cfb\u7d71\u7684\u8a3a\u65b7\u7a0b\u5e8f\u5c0d\u65bc\u9632\u6b62\u6545\u969c\u548c\u78ba\u4fdd\u5730\u4e0b\u63a1\u7926\u4f5c\u696d\u4e2d\u5b89\u5168\u53ef\u9760\u7684\u914d\u96fb\u81f3\u95dc\u91cd\u8981\u3002\n                <\/div>\n            <\/section>\n\n            <section class=\"content-section\">\n                <div class=\"section-header\">\n                    <h2 class=\"section-title\">\n                        \u0627\u0644\u0623\u0633\u0628\u0627\u0628 \u0627\u0644\u062c\u0630\u0631\u064a\u0629 \u0644\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629 \u0641\u064a \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646\n                        <span class=\"section-title-sub en\">Root Causes of Overheating in Mining Cables<\/span>\n                        <span class=\"section-title-sub cn\">\u7926\u7528\u96fb\u7e9c\u904e\u71b1\u7684\u6839\u672c\u539f\u56e0<\/span>\n                    <\/h2>\n                <\/div>\n\n                <div class=\"fault-type-box type-thermal\">\n                    <div class=\"fault-type-title\">\n                        \u0623\u0633\u0628\u0627\u0628 \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0646\u0627\u062a\u062c\u0629 \u0639\u0646 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0632\u0627\u0626\u062f \u2014 Overload-Related Heating\n                        <span class=\"fault-badge\">Critical \u062e\u0637\u064a\u0631 \u56b4\u91cd<\/span>\n                    <\/div>\n                    <p style=\"font-size: 0.88rem; margin-bottom: 11px;\">\u064a\u062d\u062f\u062b \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0632\u0627\u0626\u062f \u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u062c\u0627\u0648\u0632 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0641\u0639\u0644\u064a \u0627\u0644\u0633\u0639\u0629 \u0627\u0644\u062d\u0627\u0645\u0644\u0629 \u0627\u0644\u0645\u0642\u0646\u0646\u0629 \u0644\u0644\u0643\u0627\u0628\u0644. \u0648\u0641\u0642\u0627\u064b \u0644\u0642\u0627\u0646\u0648\u0646 \u062c\u0648\u0644 (P = I\u00b2R)\u060c \u062a\u0631\u062a\u0641\u0639 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0648\u0635\u0644 \u0628\u0634\u0643\u0644 \u062a\u0631\u0628\u064a\u0639\u064a \u0645\u0639 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631. \u064a\u064f\u062d\u062f\u062f \u0645\u0639\u064a\u0627\u0631 IEC 60287 \u0623\u0646 \u0627\u0631\u062a\u0641\u0627\u0639 \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0648\u0635\u0644 \u0641\u0648\u0642 90\u00b0C (\u0644\u0639\u0632\u0644 EPR\/XLPE) \u064a\u064f\u0633\u0631\u0651\u0639 \u0628\u0634\u0643\u0644 \u0643\u0628\u064a\u0631 \u0645\u0646 \u0634\u064a\u062e\u0648\u062e\u0629 \u0627\u0644\u0639\u0632\u0644.<\/p>\n                <\/div>\n\n                <div class=\"table-container\">\n                    <table>\n                        <thead>\n                            <tr>\n                                <th>\u0633\u0628\u0628 \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \/ Cause of Overheating \/ \u904e\u71b1\u539f\u56e0<\/th>\n                                <th>\u0627\u0644\u0622\u0644\u064a\u0629 \/ Mechanism \/ \u6a5f\u5236<\/th>\n                                <th>\u0623\u0639\u0631\u0627\u0636 \u0627\u0644\u062a\u0634\u062e\u064a\u0635 \/ Diagnostic Symptoms \/ \u8a3a\u65b7\u75c7\u72c0<\/th>\n                                <th>\u0627\u0644\u062e\u0637\u0648\u0631\u0629 \/ Severity \/ \u56b4\u91cd\u7a0b\u5ea6<\/th>\n                            <\/tr>\n                        <\/thead>\n                        <tbody>\n                            <tr>\n                                <td>\u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0632\u0627\u0626\u062f \/ Overloading \/ \u904e\u8f09<\/td>\n                                <td>I\u00b2R losses exceed heat dissipation \/ \u062e\u0633\u0627\u0626\u0631 I\u00b2R \u062a\u062a\u062c\u0627\u0648\u0632 \u0627\u0644\u062a\u0628\u062f\u064a\u062f<\/td>\n                                <td>Uniform heating along cable length \/ \u062a\u0633\u062e\u064a\u0646 \u0645\u0646\u062a\u0638\u0645<\/td>\n                                <td class=\"severity-critical\">\u062d\u0631\u062c Critical \u56b4\u91cd<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u062a\u0635\u0627\u0644 \u0639\u0627\u0644\u064a\u0629 \/ High Contact Resistance \/ \u9ad8\u63a5\u89f8\u96fb\u963b<\/td>\n                                <td>Oxidation\/corrosion at terminations \/ \u0623\u0643\u0633\u062f\u0629 \u0639\u0646\u062f \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a<\/td>\n                                <td>Localized hot spots at connectors \/ \u0646\u0642\u0627\u0637 \u0633\u0627\u062e\u0646\u0629 \u0645\u0648\u0636\u0639\u064a\u0629<\/td>\n                                <td class=\"severity-critical\">\u062d\u0631\u062c Critical \u56b4\u91cd<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0636\u0639\u0641 \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \/ Poor Ventilation \/ \u901a\u98a8\u4e0d\u826f<\/td>\n                                <td>Ambient temp exceeds design basis \/ \u062f\u0631\u062c\u0629 \u0645\u062d\u064a\u0637\u064a\u0629 \u0639\u0627\u0644\u064a\u0629<\/td>\n                                <td>Overall temperature rise \/ \u0627\u0631\u062a\u0641\u0627\u0639 \u0639\u0627\u0645 \u0644\u0644\u062d\u0631\u0627\u0631\u0629<\/td>\n                                <td class=\"severity-high\">\u0639\u0627\u0644\u064a High \u9ad8<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u0631\u0627\u0643\u0645 \u0627\u0644\u063a\u0628\u0627\u0631 \u0648\u0627\u0644\u0623\u0648\u0633\u0627\u062e \/ Dust Accumulation \/ \u7070\u5875\u7a4d\u7d2f<\/td>\n                                <td>Thermal insulation reduces dissipation \/ \u0639\u0632\u0644 \u062d\u0631\u0627\u0631\u064a \u064a\u0642\u0644\u0644 \u0627\u0644\u062a\u0628\u062f\u064a\u062f<\/td>\n                                <td>Elevated temp under debris layers \/ \u062d\u0631\u0627\u0631\u0629 \u0645\u0631\u062a\u0641\u0639\u0629 \u062a\u062d\u062a \u0627\u0644\u0623\u0648\u0633\u0627\u062e<\/td>\n                                <td class=\"severity-high\">\u0639\u0627\u0644\u064a High \u9ad8<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u0648\u0627\u0641\u0642\u064a\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \/ Current Harmonics \/ \u96fb\u6d41\u8ae7\u6ce2<\/td>\n                                <td>Additional I\u00b2R from harmonic currents \/ \u062e\u0633\u0627\u0626\u0631 \u0625\u0636\u0627\u0641\u064a\u0629 \u0645\u0646 \u0627\u0644\u062a\u0648\u0627\u0641\u0642\u064a\u0627\u062a<\/td>\n                                <td>Heating disproportionate to fundamental \/ \u062a\u0633\u062e\u064a\u0646 \u063a\u064a\u0631 \u0645\u062a\u0646\u0627\u0633\u0628<\/td>\n                                <td class=\"severity-high\">\u0639\u0627\u0644\u064a High \u9ad8<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0639\u062f\u0645 \u062a\u0648\u0627\u0632\u0646 \u0627\u0644\u0623\u0637\u0648\u0627\u0631 \/ Phase Imbalance \/ \u76f8\u4f4d\u4e0d\u5e73\u8861<\/td>\n                                <td>Unequal current distribution \/ \u062a\u0648\u0632\u064a\u0639 \u063a\u064a\u0631 \u0645\u062a\u0633\u0627\u0648\u064d \u0644\u0644\u062a\u064a\u0627\u0631<\/td>\n                                <td>One phase hotter than others \/ \u0637\u0648\u0631 \u0623\u0633\u062e\u0646 \u0645\u0646 \u0627\u0644\u0622\u062e\u0631\u064a\u0646<\/td>\n                                <td class=\"severity-moderate\">\u0645\u062a\u0648\u0633\u0637 Moderate \u4e2d\u7b49<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u062f\u0648\u0627\u0645\u0629 \u0628\u0627\u0644\u062f\u0631\u0639 \/ Shield Eddy Currents \/ \u5c4f\u853d\u6e26\u6d41<\/td>\n                                <td>Induced currents in metallic shield \/ \u062a\u064a\u0627\u0631\u0627\u062a \u0645\u0633\u062a\u062d\u062b\u0629 \u0628\u0627\u0644\u062f\u0631\u0639<\/td>\n                                <td>Shield temperature elevation \/ \u0627\u0631\u062a\u0641\u0627\u0639 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062f\u0631\u0639<\/td>\n                                <td class=\"severity-moderate\">\u0645\u062a\u0648\u0633\u0637 Moderate \u4e2d\u7b49<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u064a\u0627\u0631\u0627\u062a \u062a\u0623\u0631\u064a\u0636 \u0634\u0627\u0631\u062f\u0629 \/ Stray Ground Currents \/ \u96dc\u6563\u63a5\u5730\u96fb\u6d41<\/td>\n                                <td>Current flow through unintended paths \/ \u062a\u062f\u0641\u0642 \u062a\u064a\u0627\u0631 \u0639\u0628\u0631 \u0645\u0633\u0627\u0631\u0627\u062a \u063a\u064a\u0631 \u0645\u0642\u0635\u0648\u062f\u0629<\/td>\n                                <td>Heating at grounding points \/ \u062a\u0633\u062e\u064a\u0646 \u0639\u0646\u062f \u0646\u0642\u0627\u0637 \u0627\u0644\u062a\u0623\u0631\u064a\u0636<\/td>\n                                <td class=\"severity-moderate\">\u0645\u062a\u0648\u0633\u0637 Moderate \u4e2d\u7b49<\/td>\n                            <\/tr>\n                        <\/tbody>\n                    <\/table>\n                <\/div>\n\n                <div class=\"formula-box\">\n                    <div class=\"formula\">\u03b8 = \u03b8\u2090 + (I\/I\u1d63)\u00b2 \u00d7 \u0394\u03b8\u1d63 \u00d7 [1 + \u03b1\u2082\u2080(\u03b8 &#8211; 20)]<\/div>\n                    <div class=\"formula-desc\">\n                        \u03b8 = Conductor temperature (\u00b0C) | \u03b8\u2090 = Ambient temp | I = Actual current | I\u1d63 = Rated current | \u0394\u03b8\u1d63 = Rated temp rise<br>\n                        \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0648\u0635\u0644 = \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u064a\u0637\u064a\u0629 + (\u0627\u0644\u062a\u064a\u0627\u0631\/\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0642\u0646\u0646)\u00b2 \u00d7 \u0627\u0644\u0627\u0631\u062a\u0641\u0627\u0639 \u0627\u0644\u0645\u0642\u0646\u0646\n                    <\/div>\n                <\/div>\n\n                <div class=\"text-en\">\n                    <strong>English:<\/strong> The relationship between current and temperature rise is governed by Joule&#8217;s Law (P = I\u00b2R), where heat generation increases with the square of current. This means a 10% overload causes approximately 21% more heat generation, while a 20% overload results in 44% additional heat. According to IEC 60287-1-1, the continuous current rating of a cable is calculated based on a maximum conductor temperature (typically 90\u00b0C for EPR\/XLPE) and specific installation conditions. Exceeding this rating accelerates insulation aging according to the Arrhenius relationship\u2014every 8-10\u00b0C increase above rated temperature approximately doubles the aging rate and halves expected service life. In mining environments with VFDs, harmonic currents (particularly 5th, 7th, 11th, and 13th orders) create additional I\u00b2R losses that standard ampacity calculations do not account for. IEEE 519 recommends using cables with 125% ampacity margin when significant harmonic content is present.\n                <\/div>\n\n                <div class=\"text-cn\">\n                    <strong>\u7e41\u9ad4\u4e2d\u6587\uff1a<\/strong> \u96fb\u6d41\u8207\u6eab\u5347\u4e4b\u9593\u7684\u95dc\u4fc2\u7531\u7126\u8033\u5b9a\u5f8b\uff08P = I\u00b2R\uff09\u652f\u914d\uff0c\u5176\u4e2d\u71b1\u91cf\u7522\u751f\u96a8\u96fb\u6d41\u7684\u5e73\u65b9\u589e\u52a0\u3002\u9019\u610f\u5473\u845710%\u7684\u904e\u8f09\u6703\u5c0e\u81f4\u7d0421%\u7684\u984d\u5916\u71b1\u91cf\u7522\u751f\uff0c\u800c20%\u7684\u904e\u8f09\u6703\u5c0e\u81f444%\u7684\u984d\u5916\u71b1\u91cf\u3002\u6839\u64daIEC 60287-1-1\uff0c\u96fb\u7e9c\u7684\u9023\u7e8c\u984d\u5b9a\u96fb\u6d41\u662f\u57fa\u65bc\u6700\u9ad8\u5c0e\u9ad4\u6eab\u5ea6\uff08EPR\/XLPE\u901a\u5e38\u70ba90\u00b0C\uff09\u548c\u7279\u5b9a\u7684\u5b89\u88dd\u689d\u4ef6\u8a08\u7b97\u7684\u3002\u8d85\u904e\u6b64\u984d\u5b9a\u503c\u6703\u6839\u64da\u963f\u502b\u5c3c\u70cf\u65af\u95dc\u4fc2\u52a0\u901f\u7d55\u7de3\u8001\u5316\u2014\u2014\u984d\u5b9a\u6eab\u5ea6\u4ee5\u4e0a\u6bcf\u5347\u9ad88-10\u00b0C\uff0c\u8001\u5316\u901f\u7387\u5927\u7d04\u52a0\u500d\uff0c\u9810\u671f\u4f7f\u7528\u58fd\u547d\u6e1b\u534a\u3002\u5728\u4f7f\u7528\u8b8a\u983b\u9a45\u52d5\u5668\u7684\u63a1\u7926\u74b0\u5883\u4e2d\uff0c\u8ae7\u6ce2\u96fb\u6d41\uff08\u7279\u5225\u662f5\u6b21\u30017\u6b21\u300111\u6b21\u548c13\u6b21\u8ae7\u6ce2\uff09\u6703\u7522\u751f\u6a19\u6e96\u8f09\u6d41\u91cf\u8a08\u7b97\u672a\u8003\u616e\u7684\u984d\u5916I\u00b2R\u640d\u8017\u3002IEEE 519\u5efa\u8b70\u5728\u5b58\u5728\u986f\u8457\u8ae7\u6ce2\u542b\u91cf\u6642\u4f7f\u7528\u5177\u6709125%\u8f09\u6d41\u91cf\u88d5\u91cf\u7684\u96fb\u7e9c\u3002\n                <\/div>\n            <\/section>\n\n            <section class=\"content-section\">\n                <div class=\"section-header\">\n                    <h2 class=\"section-title\">\n                        \u0623\u0633\u0628\u0627\u0628 \u0648\u0622\u0644\u064a\u0627\u062a \u062a\u0644\u0641 \u0627\u0644\u0639\u0632\u0644\n                        <span class=\"section-title-sub en\">Causes and Mechanisms of Insulation Damage<\/span>\n                        <span class=\"section-title-sub cn\">\u7d55\u7de3\u640d\u58de\u7684\u539f\u56e0\u548c\u6a5f\u5236<\/span>\n                    <\/h2>\n                <\/div>\n\n                <div class=\"fault-type-box type-insulation\">\n                    <div class=\"fault-type-title\">\n                        \u0622\u0644\u064a\u0627\u062a \u062a\u062f\u0647\u0648\u0631 \u0627\u0644\u0639\u0632\u0644 \u2014 Insulation Degradation Mechanisms\n                        <span class=\"fault-badge orange\">Progressive \u062a\u062f\u0631\u064a\u062c\u064a \u6f38\u9032\u5f0f<\/span>\n                    <\/div>\n                    <p style=\"font-size: 0.88rem; margin-bottom: 11px;\">\u064a\u062a\u062f\u0647\u0648\u0631 \u0627\u0644\u0639\u0632\u0644 \u0639\u0628\u0631 \u0639\u062f\u0629 \u0622\u0644\u064a\u0627\u062a \u0645\u062a\u0632\u0627\u0645\u0646\u0629: \u0627\u0644\u062a\u062f\u0647\u0648\u0631 \u0627\u0644\u062d\u0631\u0627\u0631\u064a (\u0627\u0644\u0623\u0643\u0633\u062f\u0629 \u0648\u0641\u0642\u062f\u0627\u0646 \u0627\u0644\u0645\u0644\u062f\u0646\u0627\u062a)\u060c \u0648\u0627\u0644\u0625\u062c\u0647\u0627\u062f \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a (\u0627\u0644\u062a\u0634\u062c\u064a\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0648\u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u062c\u0632\u0626\u064a)\u060c \u0648\u0627\u0644\u062a\u0644\u0641 \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a (\u0627\u0644\u062a\u0634\u0642\u0642\u0627\u062a \u0648\u0627\u0644\u062a\u0622\u0643\u0644)\u060c \u0648\u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u0628\u064a\u0626\u064a\u0629 (\u0627\u0644\u0631\u0637\u0648\u0628\u0629 \u0648\u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a). \u064a\u062a\u0628\u0639 \u0627\u0644\u062a\u062f\u0647\u0648\u0631 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \u0645\u0639\u0627\u062f\u0644\u0629 \u0623\u0631\u064a\u0646\u064a\u0648\u0633 \u062d\u064a\u062b \u064a\u062a\u0636\u0627\u0639\u0641 \u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u0642\u0627\u062f\u0645 \u0645\u0639 \u0643\u0644 \u0627\u0631\u062a\u0641\u0627\u0639 8-10\u00b0C.<\/p>\n                <\/div>\n\n                <div class=\"table-container\">\n                    <table>\n                        <thead>\n                            <tr>\n                                <th>\u0622\u0644\u064a\u0629 \u0627\u0644\u062a\u062f\u0647\u0648\u0631 \/ Degradation Mechanism \/ \u964d\u89e3\u6a5f\u5236<\/th>\n                                <th>\u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u0645\u0633\u0628\u0628\u0629 \/ Contributing Factors \/ \u4fc3\u6210\u56e0\u7d20<\/th>\n                                <th>\u0645\u0624\u0634\u0631\u0627\u062a \u0627\u0644\u0643\u0634\u0641 \/ Detection Indicators \/ \u6aa2\u6e2c\u6307\u6a19<\/th>\n                                <th>\u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \/ Test Method \/ \u6e2c\u8a66\u65b9\u6cd5<\/th>\n                            <\/tr>\n                        <\/thead>\n                        <tbody>\n                            <tr>\n                                <td>\u0627\u0644\u062a\u0634\u062c\u064a\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \/ Electrical Treeing \/ \u96fb\u6a39\u679d<\/td>\n                                <td>High voltage stress, contaminants \/ \u0625\u062c\u0647\u0627\u062f \u062c\u0647\u062f \u0639\u0627\u0644\u064a<\/td>\n                                <td>\u2191 Partial discharge, \u2193 BDV \/ \u0627\u0631\u062a\u0641\u0627\u0639 PD<\/td>\n                                <td class=\"param-value\">IEEE 400.2, IEC 60270<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0627\u0644\u062a\u0634\u062c\u064a\u0631 \u0627\u0644\u0645\u0627\u0626\u064a \/ Water Treeing \/ \u6c34\u6a39\u679d<\/td>\n                                <td>Moisture ingress, AC stress \/ \u062a\u0633\u0631\u0628 \u0631\u0637\u0648\u0628\u0629<\/td>\n                                <td>\u2193 IR, tan \u03b4 increase \/ \u0627\u0646\u062e\u0641\u0627\u0636 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644<\/td>\n                                <td class=\"param-value\">IEEE 400.2, VLF tan \u03b4<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0627\u0644\u062a\u062f\u0647\u0648\u0631 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \/ Thermal Degradation \/ \u71b1\u964d\u89e3<\/td>\n                                <td>Overheating, oxygen exposure \/ \u0633\u062e\u0648\u0646\u0629 \u0632\u0627\u0626\u062f\u0629<\/td>\n                                <td>Discoloration, brittleness \/ \u062a\u063a\u064a\u0631 \u0627\u0644\u0644\u0648\u0646<\/td>\n                                <td class=\"param-value\">IEC 60811, OIT test<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u062c\u0632\u0626\u064a \/ Partial Discharge \/ \u5c40\u90e8\u653e\u96fb<\/td>\n                                <td>Voids, delamination, contamination \/ \u0641\u062c\u0648\u0627\u062a<\/td>\n                                <td>PD pulses >10 pC \/ \u0646\u0628\u0636\u0627\u062a PD<\/td>\n                                <td class=\"param-value\">IEC 60270, IEEE 400.3<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u0644\u0641 \u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a \/ Mechanical Damage \/ \u6a5f\u68b0\u640d\u50b7<\/td>\n                                <td>Abrasion, crushing, over-bending \/ \u062a\u0622\u0643\u0644<\/td>\n                                <td>Visible damage, \u2193 IR \/ \u062a\u0644\u0641 \u0645\u0631\u0626\u064a<\/td>\n                                <td class=\"param-value\">Visual + IR test<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u0644\u0648\u062b \u0643\u064a\u0645\u064a\u0627\u0626\u064a \/ Chemical Contamination \/ \u5316\u5b78\u6c61\u67d3<\/td>\n                                <td>Oil, solvents, acids \/ \u0632\u064a\u0648\u062a\u060c \u0645\u0630\u064a\u0628\u0627\u062a<\/td>\n                                <td>Swelling, softening \/ \u062a\u0648\u0631\u0645<\/td>\n                                <td class=\"param-value\">IEC 60811-2-1<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0627\u0644\u062a\u0642\u0627\u062f\u0645 \u0628\u0627\u0644\u0623\u0634\u0639\u0629 \u0641\u0648\u0642 \u0627\u0644\u0628\u0646\u0641\u0633\u062c\u064a\u0629 \/ UV Aging \/ \u7d2b\u5916\u8001\u5316<\/td>\n                                <td>Sun exposure (surface cables) \/ \u062a\u0639\u0631\u0636 \u0644\u0644\u0634\u0645\u0633<\/td>\n                                <td>Surface cracking, chalking \/ \u062a\u0634\u0642\u0642 \u0633\u0637\u062d\u064a<\/td>\n                                <td class=\"param-value\">ASTM G154<\/td>\n                            <\/tr>\n                        <\/tbody>\n                    <\/table>\n                <\/div>\n\n                <div class=\"warning-box\">\n                    <div class=\"warning-title\">\u062a\u062d\u0630\u064a\u0631: \u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u062e\u0637\u0631 \u0627\u0644\u0641\u0648\u0631\u064a \/ Immediate Danger Signs \/ \u5373\u6642\u5371\u96aa\u4fe1\u865f<\/div>\n                    <p style=\"font-size: 0.9rem; margin-bottom: 0;\">\u064a\u062c\u0628 \u0625\u064a\u0642\u0627\u0641 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0643\u0627\u0628\u0644 \u0641\u0648\u0631\u0627\u064b \u0639\u0646\u062f \u0638\u0647\u0648\u0631 \u0623\u064a \u0645\u0646 \u0627\u0644\u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u0627\u0644\u064a\u0629: \u0631\u0627\u0626\u062d\u0629 \u0627\u062d\u062a\u0631\u0627\u0642\u060c \u062f\u062e\u0627\u0646 \u0645\u0631\u0626\u064a\u060c \u062a\u063a\u064a\u0631 \u0644\u0648\u0646 \u0627\u0644\u063a\u0644\u0627\u0641 \u0625\u0644\u0649 \u0627\u0644\u0628\u0646\u064a\/\u0627\u0644\u0623\u0633\u0648\u062f\u060c \u062a\u0648\u0631\u0645 \u0623\u0648 \u0627\u0646\u062a\u0641\u0627\u062e \u0645\u0648\u0636\u0639\u064a\u060c \u062a\u0634\u0642\u0642\u0627\u062a \u0645\u0631\u0626\u064a\u0629 \u062a\u0643\u0634\u0641 \u0627\u0644\u0639\u0632\u0644\u060c \u0645\u0642\u0627\u0648\u0645\u0629 \u0639\u0632\u0644 \u0623\u0642\u0644 \u0645\u0646 1 M\u03a9\u060c \u0623\u0648 \u0627\u0631\u062a\u0641\u0627\u0639 \u062d\u0631\u0627\u0631\u0629 \u064a\u062a\u062c\u0627\u0648\u0632 20\u00b0C \u0641\u0648\u0642 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0637\u0628\u064a\u0639\u064a. \u0627\u0644\u0627\u0633\u062a\u0645\u0631\u0627\u0631 \u0641\u064a \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u064a\u0632\u064a\u062f \u062e\u0637\u0631 \u0627\u0644\u062d\u0631\u064a\u0642 \u0648\u0627\u0644\u0635\u062f\u0645\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0628\u0634\u0643\u0644 \u0643\u0628\u064a\u0631.<\/p>\n                <\/div>\n            <\/section>\n\n            <section class=\"content-section\">\n                <div class=\"section-header\">\n                    <h2 class=\"section-title\">\n                        \u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0627\u0644\u062a\u0634\u062e\u064a\u0635 \u0648\u0627\u0633\u062a\u0643\u0634\u0627\u0641 \u0627\u0644\u0623\u0639\u0637\u0627\u0644\n                        <span class=\"section-title-sub en\">Diagnostic Procedures and Troubleshooting Steps<\/span>\n                        <span class=\"section-title-sub cn\">\u8a3a\u65b7\u7a0b\u5e8f\u548c\u6545\u969c\u6392\u9664\u6b65\u9a5f<\/span>\n                    <\/h2>\n                <\/div>\n\n                <div class=\"diagnostic-box\">\n                    <div class=\"diagnostic-item\">\n                        <span class=\"diagnostic-step\">01<\/span>\n                        <div class=\"diagnostic-desc\">\n                            <strong>\u0627\u0644\u0641\u062d\u0635 \u0627\u0644\u0628\u0635\u0631\u064a \u0648\u0627\u0644\u062a\u0648\u062b\u064a\u0642 (Visual Inspection \/ \u76ee\u8996\u6aa2\u67e5):<\/strong> \u0627\u0641\u062d\u0635 \u0627\u0644\u0643\u0627\u0628\u0644 \u0628\u0627\u0644\u0643\u0627\u0645\u0644 \u0628\u062d\u062b\u0627\u064b \u0639\u0646 \u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u0644\u0641 \u0627\u0644\u0645\u0631\u0626\u064a: \u062a\u063a\u064a\u0631 \u0627\u0644\u0644\u0648\u0646\u060c \u0627\u0644\u062a\u0648\u0631\u0645\u060c \u0627\u0644\u062a\u0634\u0642\u0642\u0627\u062a\u060c \u0627\u0644\u062a\u0622\u0643\u0644\u060c \u062a\u0644\u0641 \u0627\u0644\u063a\u0644\u0627\u0641\u060c \u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a. \u0648\u062b\u0651\u0642 \u062c\u0645\u064a\u0639 \u0627\u0644\u0645\u0644\u0627\u062d\u0638\u0627\u062a \u0645\u0639 \u0627\u0644\u0635\u0648\u0631 \u0648\u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u062f\u0642\u064a\u0642\u0629. \u0627\u0646\u062a\u0628\u0647 \u0628\u0634\u0643\u0644 \u062e\u0627\u0635 \u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a \u0648\u0627\u0644\u0627\u0646\u062d\u0646\u0627\u0621\u0627\u062a \u0648\u0646\u0642\u0627\u0637 \u0627\u0644\u062f\u062e\u0648\u0644 \u0648\u0627\u0644\u062e\u0631\u0648\u062c.\n                        <\/div>\n                    <\/div>\n                    <div class=\"diagnostic-item\">\n                        <span class=\"diagnostic-step\">02<\/span>\n                        <div class=\"diagnostic-desc\">\n                            <strong>\u0627\u0644\u062a\u0635\u0648\u064a\u0631 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \u0628\u0627\u0644\u0623\u0634\u0639\u0629 \u062a\u062d\u062a \u0627\u0644\u062d\u0645\u0631\u0627\u0621 (Infrared Thermography \/ \u7d05\u5916\u71b1\u6210\u50cf):<\/strong> \u0627\u0633\u062a\u062e\u062f\u0645 \u0643\u0627\u0645\u064a\u0631\u0627 \u062d\u0631\u0627\u0631\u064a\u0629 (\u062f\u0642\u0629 \u2265320\u00d7240\u060c \u062d\u0633\u0627\u0633\u064a\u0629 \u22640.05\u00b0C) \u0644\u0645\u0633\u062d \u0627\u0644\u0643\u0627\u0628\u0644 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u062a\u062d\u062a \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0643\u0627\u0645\u0644. \u062d\u062f\u062f \u0627\u0644\u0646\u0642\u0627\u0637 \u0627\u0644\u0633\u0627\u062e\u0646\u0629 (\u0394T >15\u00b0C \u0641\u0648\u0642 \u0627\u0644\u0645\u062d\u064a\u0637 \u064a\u062a\u0637\u0644\u0628 \u062a\u062d\u0642\u064a\u0642\u0627\u064b\u060c \u0394T >40\u00b0C \u064a\u062a\u0637\u0644\u0628 \u0625\u062c\u0631\u0627\u0621\u064b \u0641\u0648\u0631\u064a\u0627\u064b). \u0648\u062b\u0651\u0642 \u0627\u0644\u0635\u0648\u0631 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u0645\u0639 \u0642\u064a\u0645 \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0637\u0644\u0642\u0629 \u0648\u0644\u064a\u0633 \u0627\u0644\u0646\u0633\u0628\u064a\u0629 \u0641\u0642\u0637.\n                        <\/div>\n                    <\/div>\n                    <div class=\"diagnostic-item\">\n                        <span class=\"diagnostic-step\">03<\/span>\n                        <div class=\"diagnostic-desc\">\n                            <strong>\u0627\u062e\u062a\u0628\u0627\u0631 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644 (Insulation Resistance Test \/ \u7d55\u7de3\u96fb\u963b\u6e2c\u8a66):<\/strong> \u0642\u0645 \u0628\u0641\u0635\u0644 \u0627\u0644\u0643\u0627\u0628\u0644 \u0645\u0646 \u062c\u0645\u064a\u0639 \u0627\u0644\u0645\u0635\u0627\u062f\u0631 \u0648\u0627\u0644\u0623\u062d\u0645\u0627\u0644. \u0637\u0628\u0651\u0642 \u062c\u0647\u062f \u0627\u062e\u062a\u0628\u0627\u0631 DC \u0648\u0641\u0642\u0627\u064b \u0644\u0645\u0639\u064a\u0627\u0631 IEEE 43 (500V \u0644\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u22641kV\u060c 1000V \u0644\u0640 1-2.5kV\u060c 2500V \u0644\u0640 2.5-5kV\u060c 5000V \u0644\u0640 >5kV). \u0633\u062c\u0651\u0644 \u0642\u064a\u0645\u0629 IR \u0639\u0646\u062f 1 \u062f\u0642\u064a\u0642\u0629 (IR\u2081) \u064810 \u062f\u0642\u0627\u0626\u0642 (IR\u2081\u2080). \u0627\u062d\u0633\u0628 \u0645\u0624\u0634\u0631 \u0627\u0644\u0627\u0633\u062a\u0642\u0637\u0627\u0628 PI = IR\u2081\u2080\/IR\u2081 (\u064a\u062c\u0628 \u0623\u0646 \u064a\u0643\u0648\u0646 \u22652.0 \u0644\u0644\u0639\u0632\u0644 \u0627\u0644\u0633\u0644\u064a\u0645).\n                        <\/div>\n                    <\/div>\n                    <div class=\"diagnostic-item\">\n                        <span class=\"diagnostic-step\">04<\/span>\n                        <div class=\"diagnostic-desc\">\n                            <strong>\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u062c\u0632\u0626\u064a (Partial Discharge Test \/ \u5c40\u90e8\u653e\u96fb\u6e2c\u8a66):<\/strong> \u0648\u0641\u0642\u0627\u064b \u0644\u0640 IEC 60270\u060c \u0642\u0645 \u0628\u0642\u064a\u0627\u0633 \u0646\u0634\u0627\u0637 \u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u062c\u0632\u0626\u064a \u0639\u0646\u062f 1.0\u00d7U\u2080 \u06481.5\u00d7U\u2080 \u06482.0\u00d7U\u2080. \u0627\u0644\u0639\u0632\u0644 \u0627\u0644\u0633\u0644\u064a\u0645 \u064a\u062c\u0628 \u0623\u0646 \u064a\u064f\u0638\u0647\u0631 PD <10 pC \u0639\u0646\u062f 1.5\u00d7U\u2080. \u0642\u064a\u0645 PD >50 pC \u062a\u0634\u064a\u0631 \u0625\u0644\u0649 \u062a\u062f\u0647\u0648\u0631 \u062e\u0637\u064a\u0631 \u064a\u062a\u0637\u0644\u0628 \u0627\u0633\u062a\u0628\u062f\u0627\u0644\u0627\u064b \u0639\u0627\u062c\u0644\u0627\u064b. \u0627\u0633\u062a\u062e\u062f\u0645 \u0645\u062e\u0637\u0637 PRPD (Phase Resolved PD) \u0644\u062a\u062d\u062f\u064a\u062f \u0646\u0648\u0639 \u0627\u0644\u0639\u064a\u0628.\n                        <\/div>\n                    <\/div>\n                    <div class=\"diagnostic-item\">\n                        <span class=\"diagnostic-step\">05<\/span>\n                        <div class=\"diagnostic-desc\">\n                            <strong>\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0645\u0646\u062e\u0641\u0636 \u062c\u062f\u0627\u064b VLF (Very Low Frequency Test \/ \u8d85\u4f4e\u983b\u6e2c\u8a66):<\/strong> \u0627\u0633\u062a\u062e\u062f\u0645 \u0627\u062e\u062a\u0628\u0627\u0631 VLF (0.01-0.1 Hz) \u0643\u0628\u062f\u064a\u0644 \u0623\u0643\u062b\u0631 \u0623\u0645\u0627\u0646\u0627\u064b \u0644\u0627\u062e\u062a\u0628\u0627\u0631 DC \u0644\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u0645\u062a\u0642\u0627\u062f\u0645\u0629. \u0642\u0645 \u0628\u0642\u064a\u0627\u0633 tan \u03b4 (\u0639\u0627\u0645\u0644 \u0627\u0644\u062a\u0628\u062f\u064a\u062f) \u0639\u0646\u062f 0.5\u00d7U\u2080 \u06481.0\u00d7U\u2080 \u06481.5\u00d7U\u2080. \u0642\u064a\u0645 tan \u03b4 >0.1% \u0639\u0646\u062f U\u2080 \u062a\u0634\u064a\u0631 \u0625\u0644\u0649 \u062a\u062f\u0647\u0648\u0631 \u064a\u062a\u0637\u0644\u0628 \u0645\u0631\u0627\u0642\u0628\u0629 \u0645\u0643\u062b\u0641\u0629. \u062a\u063a\u064a\u0631 tan \u03b4 >0.5% \u064a\u0634\u064a\u0631 \u0625\u0644\u0649 \u062e\u0644\u0644 \u062c\u0633\u064a\u0645.\n                        <\/div>\n                    <\/div>\n                    <div class=\"diagnostic-item\">\n                        <span class=\"diagnostic-step\">06<\/span>\n                        <div class=\"diagnostic-desc\">\n                            <strong>\u062a\u062d\u0644\u064a\u0644 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0648\u0635\u0644 (Conductor Resistance Analysis \/ \u5c0e\u9ad4\u96fb\u963b\u5206\u6790):<\/strong> \u0642\u0645 \u0628\u0642\u064a\u0627\u0633 \u0645\u0642\u0627\u0648\u0645\u0629 DC \u0644\u0643\u0644 \u0645\u0648\u0635\u0644 \u0648\u0645\u0642\u0627\u0631\u0646\u062a\u0647\u0627 \u0645\u0639 \u0627\u0644\u0642\u064a\u0645 \u0627\u0644\u0645\u0631\u062c\u0639\u064a\u0629 \u0645\u0646 IEC 60228. \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 >5% \u0639\u0646 \u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u0631\u062c\u0639\u064a\u0629 \u062a\u0634\u064a\u0631 \u0625\u0644\u0649 \u062a\u0644\u0641 \u0641\u064a \u0627\u0644\u0645\u0648\u0635\u0644 \u0623\u0648 \u062a\u0648\u0635\u064a\u0644\u0627\u062a \u0645\u0639\u064a\u0628\u0629. \u0642\u0627\u0631\u0646 \u0645\u0642\u0627\u0648\u0645\u0627\u062a \u0627\u0644\u0623\u0637\u0648\u0627\u0631 \u0627\u0644\u062b\u0644\u0627\u062b\u0629 &#8211; \u0639\u062f\u0645 \u0627\u0644\u062a\u0648\u0627\u0632\u0646 >3% \u064a\u062a\u0637\u0644\u0628 \u062a\u062d\u0642\u064a\u0642\u0627\u064b.\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <div class=\"text-en\">\n                    <strong>English:<\/strong> A systematic diagnostic approach is essential for accurate fault identification. Begin with non-destructive tests before progressing to more invasive methods. Infrared thermography according to NETA MTS guidelines should be performed under minimum 40% load conditions for meaningful results. The temperature differential (\u0394T) between the cable and ambient determines severity: \u0394T 1-10\u00b0C indicates possible deficiency requiring investigation, \u0394T 11-20\u00b0C indicates probable deficiency requiring repair, \u0394T 21-40\u00b0C indicates deficiency requiring priority repair, and \u0394T >40\u00b0C indicates major deficiency requiring immediate action. For insulation resistance testing, IEEE 43 specifies minimum acceptable values based on voltage rating: IR \u2265 (kV + 1) M\u03a9 as absolute minimum, with recommended values being 100 M\u03a9 \u00d7 kV for new cables. The Polarization Index (PI) provides insight into moisture contamination\u2014PI <1.5 indicates wet or contaminated insulation, PI 1.5-2.0 indicates marginal condition, PI 2.0-4.0 indicates good condition, and PI >4.0 indicates excellent or dry condition.\n                <\/div>\n\n                <div class=\"text-cn\">\n                    <strong>\u7e41\u9ad4\u4e2d\u6587\uff1a<\/strong> \u7cfb\u7d71\u7684\u8a3a\u65b7\u65b9\u6cd5\u5c0d\u65bc\u6e96\u78ba\u8b58\u5225\u6545\u969c\u81f3\u95dc\u91cd\u8981\u3002\u61c9\u5148\u9032\u884c\u7121\u640d\u6e2c\u8a66\uff0c\u7136\u5f8c\u518d\u9032\u884c\u66f4\u5177\u4fb5\u5165\u6027\u7684\u65b9\u6cd5\u3002\u6839\u64daNETA MTS\u6307\u5357\uff0c\u7d05\u5916\u71b1\u6210\u50cf\u61c9\u5728\u81f3\u5c1140%\u8ca0\u8f09\u689d\u4ef6\u4e0b\u9032\u884c\u4ee5\u7372\u5f97\u6709\u610f\u7fa9\u7684\u7d50\u679c\u3002\u96fb\u7e9c\u8207\u74b0\u5883\u4e4b\u9593\u7684\u6eab\u5dee\uff08\u0394T\uff09\u6c7a\u5b9a\u56b4\u91cd\u7a0b\u5ea6\uff1a\u0394T 1-10\u00b0C\u8868\u793a\u53ef\u80fd\u5b58\u5728\u7f3a\u9677\u9700\u8981\u8abf\u67e5\uff0c\u0394T 11-20\u00b0C\u8868\u793a\u53ef\u80fd\u5b58\u5728\u7f3a\u9677\u9700\u8981\u4fee\u5fa9\uff0c\u0394T 21-40\u00b0C\u8868\u793a\u5b58\u5728\u7f3a\u9677\u9700\u8981\u512a\u5148\u4fee\u5fa9\uff0c\u0394T >40\u00b0C\u8868\u793a\u5b58\u5728\u91cd\u5927\u7f3a\u9677\u9700\u8981\u7acb\u5373\u8655\u7406\u3002\u5c0d\u65bc\u7d55\u7de3\u96fb\u963b\u6e2c\u8a66\uff0cIEEE 43\u6839\u64da\u984d\u5b9a\u96fb\u58d3\u898f\u5b9a\u4e86\u6700\u4f4e\u53ef\u63a5\u53d7\u503c\uff1a\u7d55\u5c0d\u6700\u4f4e\u503c\u70baIR \u2265 (kV + 1) M\u03a9\uff0c\u5efa\u8b70\u503c\u70ba\u65b0\u96fb\u7e9c100 M\u03a9 \u00d7 kV\u3002\u6975\u5316\u6307\u6578\uff08PI\uff09\u53ef\u63d0\u4f9b\u6c34\u5206\u6c61\u67d3\u7684\u4fe1\u606f\u2014\u2014PI <1.5\u8868\u793a\u7d55\u7de3\u6f6e\u6fd5\u6216\u53d7\u6c61\u67d3\uff0cPI 1.5-2.0\u8868\u793a\u908a\u7de3\u72c0\u614b\uff0cPI 2.0-4.0\u8868\u793a\u826f\u597d\u72c0\u614b\uff0cPI >4.0\u8868\u793a\u512a\u79c0\u6216\u4e7e\u71e5\u72c0\u614b\u3002\n                <\/div>\n            <\/section>\n\n            <section class=\"content-section\">\n                <div class=\"section-header\">\n                    <h2 class=\"section-title\">\n                        \u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0642\u0628\u0648\u0644 \u0648\u0627\u0644\u0631\u0641\u0636 \u0644\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u0634\u062e\u064a\u0635\u064a\u0629\n                        <span class=\"section-title-sub en\">Acceptance and Rejection Criteria for Diagnostic Tests<\/span>\n                        <span class=\"section-title-sub cn\">\u8a3a\u65b7\u6e2c\u8a66\u7684\u5408\u683c\u8207\u4e0d\u5408\u683c\u6a19\u6e96<\/span>\n                    <\/h2>\n                <\/div>\n\n                <div class=\"table-container\">\n                    <table>\n                        <thead>\n                            <tr>\n                                <th>\u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \/ Test \/ \u6e2c\u8a66<\/th>\n                                <th>\u0627\u0644\u0645\u0639\u064a\u0627\u0631 \/ Standard \/ \u6a19\u6e96<\/th>\n                                <th>\u0642\u064a\u0645\u0629 \u0645\u0642\u0628\u0648\u0644\u0629 \/ Acceptable \/ \u5408\u683c<\/th>\n                                <th>\u062a\u062d\u0630\u064a\u0631 \/ Warning \/ \u8b66\u544a<\/th>\n                                <th>\u063a\u064a\u0631 \u0645\u0642\u0628\u0648\u0644 \/ Reject \/ \u4e0d\u5408\u683c<\/th>\n                            <\/tr>\n                        <\/thead>\n                        <tbody>\n                            <tr>\n                                <td>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644 IR \/ Insulation Resistance \/ \u7d55\u7de3\u96fb\u963b<\/td>\n                                <td class=\"param-value\">IEEE 43<\/td>\n                                <td class=\"severity-low\">>100 M\u03a9\u00b7kV<\/td>\n                                <td class=\"severity-moderate\">10-100 M\u03a9\u00b7kV<\/td>\n                                <td class=\"severity-critical\"><(kV+1) M\u03a9<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0645\u0624\u0634\u0631 \u0627\u0644\u0627\u0633\u062a\u0642\u0637\u0627\u0628 PI \/ Polarization Index \/ \u6975\u5316\u6307\u6578<\/td>\n                                <td class=\"param-value\">IEEE 43<\/td>\n                                <td class=\"severity-low\">>2.0<\/td>\n                                <td class=\"severity-moderate\">1.5-2.0<\/td>\n                                <td class=\"severity-critical\"><1.5<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u062c\u0632\u0626\u064a PD \/ Partial Discharge \/ \u5c40\u90e8\u653e\u96fb<\/td>\n                                <td class=\"param-value\">IEC 60270<\/td>\n                                <td class=\"severity-low\"><10 pC @ 1.5U\u2080<\/td>\n                                <td class=\"severity-moderate\">10-50 pC<\/td>\n                                <td class=\"severity-critical\">>50 pC<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0639\u0627\u0645\u0644 \u0627\u0644\u062a\u0628\u062f\u064a\u062f tan \u03b4 \/ Dissipation Factor \/ \u4ecb\u640d\u56e0\u6578<\/td>\n                                <td class=\"param-value\">IEEE 400.2<\/td>\n                                <td class=\"severity-low\"><0.1% @ U\u2080<\/td>\n                                <td class=\"severity-moderate\">0.1-0.5%<\/td>\n                                <td class=\"severity-critical\">>0.5%<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0627\u0644\u0641\u0631\u0642 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \u0394T \/ Thermal Differential \/ \u6eab\u5dee<\/td>\n                                <td class=\"param-value\">NETA MTS<\/td>\n                                <td class=\"severity-low\"><10\u00b0C<\/td>\n                                <td class=\"severity-moderate\">10-40\u00b0C<\/td>\n                                <td class=\"severity-critical\">>40\u00b0C<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0648\u0635\u0644 \/ Conductor Resistance \/ \u5c0e\u9ad4\u96fb\u963b<\/td>\n                                <td class=\"param-value\">IEC 60228<\/td>\n                                <td class=\"severity-low\"><103% ref<\/td>\n                                <td class=\"severity-moderate\">103-105% ref<\/td>\n                                <td class=\"severity-critical\">>105% ref<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062c\u0647\u062f \u0627\u0644\u0627\u0646\u0647\u064a\u0627\u0631 \/ Breakdown Voltage \/ \u64ca\u7a7f\u96fb\u58d3<\/td>\n                                <td class=\"param-value\">ASTM D149<\/td>\n                                <td class=\"severity-low\">>80% original<\/td>\n                                <td class=\"severity-moderate\">60-80%<\/td>\n                                <td class=\"severity-critical\"><60%<\/td>\n                            <\/tr>\n                        <\/tbody>\n                    <\/table>\n                <\/div>\n\n                <div class=\"spec-grid\">\n                    <div class=\"spec-card\">\n                        <div class=\"spec-card-title\">\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644 \/ Min IR Value \/ \u6700\u4f4e\u7d55\u7de3\u96fb\u963b<\/div>\n                        <div class=\"spec-card-value\">(kV+1)<\/div>\n                        <div class=\"spec-card-unit\">M\u03a9 minimum per IEEE 43<\/div>\n                    <\/div>\n                    <div class=\"spec-card\">\n                        <div class=\"spec-card-title\">\u0645\u0624\u0634\u0631 \u0627\u0644\u0627\u0633\u062a\u0642\u0637\u0627\u0628 \u0627\u0644\u0645\u0642\u0628\u0648\u0644 \/ Acceptable PI \/ \u5408\u683c\u6975\u5316\u6307\u6578<\/div>\n                        <div class=\"spec-card-value\">\u22652.0<\/div>\n                        <div class=\"spec-card-unit\">IR\u2081\u2080 \/ IR\u2081 ratio<\/div>\n                    <\/div>\n                    <div class=\"spec-card\">\n                        <div class=\"spec-card-title\">\u062d\u062f \u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u062c\u0632\u0626\u064a \/ PD Limit \/ \u5c40\u653e\u9650\u503c<\/div>\n                        <div class=\"spec-card-value\">\u226410<\/div>\n                        <div class=\"spec-card-unit\">pC @ 1.5\u00d7U\u2080 (IEC 60270)<\/div>\n                    <\/div>\n                    <div class=\"spec-card\">\n                        <div class=\"spec-card-title\">\u062d\u062f \u0627\u0644\u0641\u0631\u0642 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \/ Thermal \u0394T Limit \/ \u6eab\u5dee\u9650\u503c<\/div>\n                        <div class=\"spec-card-value\">\u226440<\/div>\n                        <div class=\"spec-card-unit\">\u00b0C above ambient (immediate action)<\/div>\n                    <\/div>\n                    <div class=\"spec-card\">\n                        <div class=\"spec-card-title\">\u062c\u0647\u062f \u0627\u062e\u062a\u0628\u0627\u0631 DC \/ DC Test Voltage \/ \u76f4\u6d41\u6e2c\u8a66\u96fb\u58d3<\/div>\n                        <div class=\"spec-card-value\">2.5-5.0<\/div>\n                        <div class=\"spec-card-unit\">\u00d7 U\u2080 per voltage class<\/div>\n                    <\/div>\n                    <div class=\"spec-card\">\n                        <div class=\"spec-card-title\">\u062d\u062f tan \u03b4 VLF \/ VLF tan \u03b4 Limit \/ VLF\u4ecb\u640d\u9650\u503c<\/div>\n                        <div class=\"spec-card-value\">\u22640.1<\/div>\n                        <div class=\"spec-card-unit\">% @ U\u2080 for healthy insulation<\/div>\n                    <\/div>\n                <\/div>\n            <\/section>\n\n            <section class=\"content-section\">\n                <div class=\"section-header\">\n                    <h2 class=\"section-title\">\n                        \u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0627\u0644\u0625\u0635\u0644\u0627\u062d \u0648\u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0648\u0642\u0627\u0626\u064a\u0629\n                        <span class=\"section-title-sub en\">Repair Procedures and Preventive Maintenance<\/span>\n                        <span class=\"section-title-sub cn\">\u4fee\u5fa9\u7a0b\u5e8f\u548c\u9810\u9632\u6027\u7dad\u8b77<\/span>\n                    <\/h2>\n                <\/div>\n\n                <div class=\"checklist-box\">\n                    <div class=\"checklist-title\">\u0642\u0627\u0626\u0645\u0629 \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0648\u0642\u0627\u0626\u064a\u0629 \u0627\u0644\u0634\u0647\u0631\u064a\u0629 \/ Monthly Preventive Maintenance Checklist \/ \u6708\u5ea6\u9810\u9632\u6027\u7dad\u8b77\u6e05\u55ae<\/div>\n                    <div class=\"checklist-item\">\n                        <span class=\"checklist-marker\">\u2611<\/span>\n                        <span>\u0627\u0644\u0641\u062d\u0635 \u0627\u0644\u0628\u0635\u0631\u064a \u0644\u062c\u0645\u064a\u0639 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0648\u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a \u0628\u062d\u062b\u0627\u064b \u0639\u0646 \u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u0644\u0641 \u0623\u0648 \u0627\u0644\u062a\u0622\u0643\u0644 \/ Visual inspection of all cables and connections for damage or wear<\/span>\n                    <\/div>\n                    <div class=\"checklist-item\">\n                        <span class=\"checklist-marker\">\u2611<\/span>\n                        <span>\u0645\u0633\u062d \u062d\u0631\u0627\u0631\u064a \u0628\u0627\u0644\u0623\u0634\u0639\u0629 \u062a\u062d\u062a \u0627\u0644\u062d\u0645\u0631\u0627\u0621 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u062a\u062d\u062a \u0627\u0644\u062d\u0645\u0644 \/ Infrared thermal scan during operation under load<\/span>\n                    <\/div>\n                    <div class=\"checklist-item\">\n                        <span class=\"checklist-marker\">\u2611<\/span>\n                        <span>\u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0625\u062d\u0643\u0627\u0645 \u0631\u0628\u0637 \u062c\u0645\u064a\u0639 \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a \u0648\u0627\u0644\u0637\u0631\u0641\u064a\u0627\u062a \/ Verify tightness of all connections and terminations<\/span>\n                    <\/div>\n                    <div class=\"checklist-item\">\n                        <span class=\"checklist-marker\">\u2611<\/span>\n                        <span>\u062a\u0646\u0638\u064a\u0641 \u0627\u0644\u063a\u0628\u0627\u0631 \u0648\u0627\u0644\u0623\u0648\u0633\u0627\u062e \u0627\u0644\u0645\u062a\u0631\u0627\u0643\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0648\u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a \/ Clean accumulated dust and debris from cables and connections<\/span>\n                    <\/div>\n                    <div class=\"checklist-item\">\n                        <span class=\"checklist-marker\">\u2611<\/span>\n                        <span>\u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u062a\u0623\u0631\u064a\u0636 \u0648\u0645\u0642\u0627\u0648\u0645\u0629 \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u0623\u0631\u064a\u0636 \/ Verify grounding integrity and ground system resistance<\/span>\n                    <\/div>\n                    <div class=\"checklist-item\">\n                        <span class=\"checklist-marker\">\u2611<\/span>\n                        <span>\u0645\u0631\u0627\u062c\u0639\u0629 \u0633\u062c\u0644\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0648\u0627\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0639\u062f\u0645 \u062a\u062c\u0627\u0648\u0632 \u0627\u0644\u0633\u0639\u0629 \u0627\u0644\u0645\u0642\u0646\u0646\u0629 \/ Review current logs and verify rated capacity not exceeded<\/span>\n                    <\/div>\n                <\/div>\n\n                <div class=\"table-container\">\n                    <table>\n                        <thead>\n                            <tr>\n                                <th>\u0646\u0648\u0639 \u0627\u0644\u0639\u064a\u0628 \/ Defect Type \/ \u7f3a\u9677\u985e\u578b<\/th>\n                                <th>\u0627\u0644\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u062a\u0635\u062d\u064a\u062d\u064a \/ Corrective Action \/ \u7cfe\u6b63\u63aa\u65bd<\/th>\n                                <th>\u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0645\u0631\u062c\u0639\u064a \/ Reference Standard \/ \u53c3\u8003\u6a19\u6e96<\/th>\n                                <th>\u0627\u0644\u0648\u0642\u062a \u0627\u0644\u0645\u0648\u0635\u0649 \/ Timeframe \/ \u6642\u9593\u6846\u67b6<\/th>\n                            <\/tr>\n                        <\/thead>\n                        <tbody>\n                            <tr>\n                                <td>\u0646\u0642\u0637\u0629 \u0633\u0627\u062e\u0646\u0629 \u0628\u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a \/ Hot Spot at Termination \/ \u7aef\u63a5\u71b1\u9ede<\/td>\n                                <td>Re-terminate, clean contacts, apply compound \/ \u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062a\u0648\u0635\u064a\u0644<\/td>\n                                <td class=\"param-value\">IEEE 48, NEMA CC1<\/td>\n                                <td class=\"severity-high\">Within 24-72h<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u0644\u0641 \u063a\u0644\u0627\u0641 \u0645\u0648\u0636\u0639\u064a \/ Localized Sheath Damage \/ \u5c40\u90e8\u8b77\u5957\u640d\u50b7<\/td>\n                                <td>Apply heat-shrink repair sleeve \/ \u062a\u0637\u0628\u064a\u0642 \u063a\u0644\u0627\u0641 \u0625\u0635\u0644\u0627\u062d<\/td>\n                                <td class=\"param-value\">IEEE 404<\/td>\n                                <td class=\"severity-moderate\">Within 1 week<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u0627\u0646\u062e\u0641\u0627\u0636 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644 \/ Low Insulation Resistance \/ \u7d55\u7de3\u96fb\u963b\u4f4e<\/td>\n                                <td>Dry out cable, identify moisture source \/ \u062a\u062c\u0641\u064a\u0641 \u0627\u0644\u0643\u0627\u0628\u0644<\/td>\n                                <td class=\"param-value\">IEEE 43<\/td>\n                                <td class=\"severity-high\">Within 48h<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u0641\u0631\u064a\u063a \u062c\u0632\u0626\u064a \u0639\u0627\u0644\u064a \/ High Partial Discharge \/ \u5c40\u90e8\u653e\u96fb\u9ad8<\/td>\n                                <td>Replace affected section \/ \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0642\u0633\u0645 \u0627\u0644\u0645\u062a\u0623\u062b\u0631<\/td>\n                                <td class=\"param-value\">IEC 60270<\/td>\n                                <td class=\"severity-critical\">Immediate<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u062d\u0645\u064a\u0644 \u0632\u0627\u0626\u062f \u0645\u0633\u062a\u0645\u0631 \/ Continuous Overloading \/ \u6301\u7e8c\u904e\u8f09<\/td>\n                                <td>Upgrade cable size or reduce load \/ \u062a\u0631\u0642\u064a\u0629 \u0623\u0648 \u062a\u0642\u0644\u064a\u0644 \u0627\u0644\u062d\u0645\u0644<\/td>\n                                <td class=\"param-value\">IEC 60287<\/td>\n                                <td class=\"severity-high\">Within 1 week<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>\u062a\u0648\u0627\u0641\u0642\u064a\u0627\u062a \u0645\u0641\u0631\u0637\u0629 \/ Excessive Harmonics \/ \u8ae7\u6ce2\u904e\u5927<\/td>\n                                <td>Install harmonic filters, derate cable \/ \u062a\u0631\u0643\u064a\u0628 \u0645\u0631\u0634\u062d\u0627\u062a<\/td>\n                                <td class=\"param-value\">IEEE 519<\/td>\n                                <td class=\"severity-moderate\">Within 2 weeks<\/td>\n                            <\/tr>\n                        <\/tbody>\n                    <\/table>\n                <\/div>\n\n                <div class=\"text-en\">\n                    <strong>English:<\/strong> Effective repair and preventive maintenance programs are essential for maximizing cable service life and preventing failures. For termination repairs, follow IEEE 48 guidelines for stress cone installation and IEEE 404 for splice design. When re-terminating, always clean the conductor with approved solvent, apply fresh oxide-inhibiting compound, and torque connections to manufacturer specifications (typically 35-45 Nm for 95mm\u00b2 lugs). For sheath repairs, IEEE 404 Section 6 specifies requirements for repair materials compatible with the original sheath material. Heat-shrink repair sleeves must provide environmental seal, mechanical protection, and electrical insulation equivalent to the original sheath. For insulation repair after moisture ingress, controlled heating at 60-70\u00b0C with vacuum application can remove moisture, but the cable must be re-tested before energization. If partial discharge levels exceed 50 pC after drying, section replacement is necessary. Preventive maintenance intervals should follow NETA MTS recommendations: visual inspection monthly, thermographic survey quarterly, insulation resistance testing annually, and partial discharge testing every 3-5 years for critical circuits.\n                <\/div>\n\n                <div class=\"text-cn\">\n                    <strong>\u7e41\u9ad4\u4e2d\u6587\uff1a<\/strong> \u6709\u6548\u7684\u4fee\u5fa9\u548c\u9810\u9632\u6027\u7dad\u8b77\u8a08\u5283\u5c0d\u65bc\u6700\u5927\u5316\u96fb\u7e9c\u4f7f\u7528\u58fd\u547d\u548c\u9632\u6b62\u6545\u969c\u81f3\u95dc\u91cd\u8981\u3002\u5c0d\u65bc\u7aef\u63a5\u4fee\u5fa9\uff0c\u8acb\u9075\u5faaIEEE 48\u61c9\u529b\u9310\u5b89\u88dd\u6307\u5357\u548cIEEE 404\u63a5\u982d\u8a2d\u8a08\u3002\u91cd\u65b0\u7aef\u63a5\u6642\uff0c\u59cb\u7d42\u4f7f\u7528\u6279\u51c6\u7684\u6eb6\u5291\u6e05\u6f54\u5c0e\u9ad4\uff0c\u5857\u62b9\u65b0\u9bae\u7684\u6c27\u5316\u6291\u5236\u5291\uff0c\u4e26\u6309\u88fd\u9020\u5546\u898f\u683c\u64f0\u7dca\u9023\u63a5\uff0895mm\u00b2\u63a5\u7dda\u7247\u901a\u5e38\u70ba35-45 Nm\uff09\u3002\u5c0d\u65bc\u8b77\u5957\u4fee\u5fa9\uff0cIEEE 404\u7b2c6\u7bc0\u898f\u5b9a\u4e86\u8207\u539f\u59cb\u8b77\u5957\u6750\u6599\u517c\u5bb9\u7684\u4fee\u5fa9\u6750\u6599\u8981\u6c42\u3002\u71b1\u7e2e\u4fee\u5fa9\u5957\u7ba1\u5fc5\u9808\u63d0\u4f9b\u8207\u539f\u59cb\u8b77\u5957\u7b49\u6548\u7684\u74b0\u5883\u5bc6\u5c01\u3001\u6a5f\u68b0\u4fdd\u8b77\u548c\u96fb\u6c23\u7d55\u7de3\u3002\u5c0d\u65bc\u6c34\u5206\u6ef2\u5165\u5f8c\u7684\u7d55\u7de3\u4fee\u5fa9\uff0c\u572860-70\u00b0C\u4e0b\u9032\u884c\u53d7\u63a7\u52a0\u71b1\u4e26\u65bd\u52a0\u771f\u7a7a\u53ef\u4ee5\u53bb\u9664\u6c34\u5206\uff0c\u4f46\u96fb\u7e9c\u5fc5\u9808\u5728\u901a\u96fb\u524d\u91cd\u65b0\u6e2c\u8a66\u3002\u5982\u679c\u4e7e\u71e5\u5f8c\u5c40\u90e8\u653e\u96fb\u6c34\u5e73\u8d85\u904e50 pC\uff0c\u5247\u9700\u8981\u66f4\u63db\u90e8\u5206\u96fb\u7e9c\u3002\u9810\u9632\u6027\u7dad\u8b77\u9593\u9694\u61c9\u9075\u5faaNETA MTS\u5efa\u8b70\uff1a\u6bcf\u6708\u76ee\u8996\u6aa2\u67e5\uff0c\u6bcf\u5b63\u5ea6\u71b1\u6210\u50cf\u8abf\u67e5\uff0c\u6bcf\u5e74\u7d55\u7de3\u96fb\u963b\u6e2c\u8a66\uff0c\u95dc\u9375\u8ff4\u8def\u6bcf3-5\u5e74\u9032\u884c\u5c40\u90e8\u653e\u96fb\u6e2c\u8a66\u3002\n                <\/div>\n            <\/section>\n\n            <section class=\"content-section\">\n                <div class=\"section-header\">\n                    <h2 class=\"section-title\">\n                        \u0645\u0642\u0627\u0631\u0646\u0629 \u0637\u0631\u0642 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u0634\u062e\u064a\u0635\u064a\n                        <span class=\"section-title-sub en\">Comparison of Diagnostic Test Methods<\/span>\n                        <span class=\"section-title-sub cn\">\u8a3a\u65b7\u6e2c\u8a66\u65b9\u6cd5\u6bd4\u8f03<\/span>\n                    <\/h2>\n                <\/div>\n\n                <h3 style=\"color: var(--accent-gold); margin: 18px 0 14px; font-size: 1rem;\">\u0641\u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0643\u0634\u0641 \u0639\u0646 \u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0639\u064a\u0648\u0628 \/ Defect Detection Effectiveness \/ \u7f3a\u9677\u6aa2\u6e2c\u6548\u80fd<\/h3>\n                \n                <div class=\"comparison-bar-container\">\n                    <div class=\"comparison-item\">\n                        <div class=\"comparison-label\">\n                            <span>Thermal Defects Detection (\u0643\u0634\u0641 \u0627\u0644\u0639\u064a\u0648\u0628 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \/ \u71b1\u7f3a\u9677\u6aa2\u6e2c)<\/span>\n                        <\/div>\n                        <div style=\"display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px;\">\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-red); margin-bottom: 3px;\">IR Thermo: 95%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-thermal\" style=\"width: 95%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-orange); margin-bottom: 3px;\">IR Test: 60%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-insulation\" style=\"width: 60%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-purple); margin-bottom: 3px;\">PD Test: 40%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-mechanical\" style=\"width: 40%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-cyan); margin-bottom: 3px;\">VLF tan \u03b4: 50%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-environmental\" style=\"width: 50%;\"><\/div><\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"comparison-item\">\n                        <div class=\"comparison-label\">\n                            <span>Insulation Degradation Detection (\u0643\u0634\u0641 \u062a\u062f\u0647\u0648\u0631 \u0627\u0644\u0639\u0632\u0644 \/ \u7d55\u7de3\u9000\u5316\u6aa2\u6e2c)<\/span>\n                        <\/div>\n                        <div style=\"display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px;\">\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-red); margin-bottom: 3px;\">IR Thermo: 30%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-thermal\" style=\"width: 30%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-orange); margin-bottom: 3px;\">IR Test: 75%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-insulation\" style=\"width: 75%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-purple); margin-bottom: 3px;\">PD Test: 90%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-mechanical\" style=\"width: 90%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-cyan); margin-bottom: 3px;\">VLF tan \u03b4: 95%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-environmental\" style=\"width: 95%;\"><\/div><\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"comparison-item\">\n                        <div class=\"comparison-label\">\n                            <span>Water Treeing Detection (\u0643\u0634\u0641 \u0627\u0644\u062a\u0634\u062c\u064a\u0631 \u0627\u0644\u0645\u0627\u0626\u064a \/ \u6c34\u6a39\u6aa2\u6e2c)<\/span>\n                        <\/div>\n                        <div style=\"display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px;\">\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-red); margin-bottom: 3px;\">IR Thermo: 10%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-thermal\" style=\"width: 10%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-orange); margin-bottom: 3px;\">IR Test: 65%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-insulation\" style=\"width: 65%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-purple); margin-bottom: 3px;\">PD Test: 50%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-mechanical\" style=\"width: 50%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-cyan); margin-bottom: 3px;\">VLF tan \u03b4: 98%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-environmental\" style=\"width: 98%;\"><\/div><\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"comparison-item\">\n                        <div class=\"comparison-label\">\n                            <span>Mechanical Damage Detection (\u0643\u0634\u0641 \u0627\u0644\u062a\u0644\u0641 \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a \/ \u6a5f\u68b0\u640d\u50b7\u6aa2\u6e2c)<\/span>\n                        <\/div>\n                        <div style=\"display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px;\">\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-red); margin-bottom: 3px;\">IR Thermo: 70%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-thermal\" style=\"width: 70%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-orange); margin-bottom: 3px;\">IR Test: 80%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-insulation\" style=\"width: 80%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-purple); margin-bottom: 3px;\">PD Test: 85%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-mechanical\" style=\"width: 85%;\"><\/div><\/div>\n                            <\/div>\n                            <div>\n                                <div style=\"font-size: 0.72rem; color: var(--accent-cyan); margin-bottom: 3px;\">VLF tan \u03b4: 60%<\/div>\n                                <div class=\"comparison-bar\"><div class=\"comparison-fill fill-environmental\" style=\"width: 60%;\"><\/div><\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <div class=\"info-box\">\n                    <div class=\"info-title\">\u062a\u0648\u0635\u064a\u0629: \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0645\u062a\u0643\u0627\u0645\u0644 \/ Recommendation: Integrated Testing \/ \u5efa\u8b70\uff1a\u7d9c\u5408\u6e2c\u8a66<\/div>\n                    <p style=\"font-size: 0.9rem; margin-bottom: 0;\">\u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u062a\u0642\u064a\u064a\u0645 \u0634\u0627\u0645\u0644 \u0644\u062d\u0627\u0644\u0629 \u0627\u0644\u0643\u0627\u0628\u0644\u060c \u064a\u064f\u0648\u0635\u0649 \u0628\u062f\u0645\u062c \u0639\u062f\u0629 \u0637\u0631\u0642 \u0627\u062e\u062a\u0628\u0627\u0631: \u0627\u0644\u062a\u0635\u0648\u064a\u0631 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \u0644\u0644\u0643\u0634\u0641 \u0639\u0646 \u0627\u0644\u0646\u0642\u0627\u0637 \u0627\u0644\u0633\u0627\u062e\u0646\u0629 + \u0627\u062e\u062a\u0628\u0627\u0631 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644 \u0644\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062d\u0627\u0644\u0629 \u0627\u0644\u0639\u0627\u0645\u0629 + \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u062c\u0632\u0626\u064a \u0644\u0644\u0643\u0634\u0641 \u0639\u0646 \u0627\u0644\u0639\u064a\u0648\u0628 \u0627\u0644\u0645\u0648\u0636\u0639\u064a\u0629 + \u0627\u062e\u062a\u0628\u0627\u0631 VLF tan \u03b4 \u0644\u0644\u0643\u0634\u0641 \u0639\u0646 \u0627\u0644\u062a\u0634\u062c\u064a\u0631 \u0627\u0644\u0645\u0627\u0626\u064a. \u0647\u0630\u0627 \u0627\u0644\u0646\u0647\u062c \u0627\u0644\u0645\u062a\u0643\u0627\u0645\u0644 \u0648\u0641\u0642\u0627\u064b \u0644\u0640 IEEE 400 \u064a\u0648\u0641\u0631 \u062a\u063a\u0637\u064a\u0629 >95% \u0644\u062c\u0645\u064a\u0639 \u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0639\u064a\u0648\u0628 \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629.<\/p>\n                <\/div>\n            <\/section>\n\n            <section class=\"content-section\">\n                <div class=\"references\">\n                    <h3>\u0627\u0644\u0645\u0635\u0627\u062f\u0631 \u0648\u0627\u0644\u0645\u0631\u0627\u062c\u0639 \u0627\u0644\u0645\u0648\u062b\u0648\u0642\u0629 \/ Authoritative References &#038; Sources \/ \u6b0a\u5a01\u53c3\u8003\u8cc7\u6599<\/h3>\n                    <ul class=\"reference-list\">\n                        <li>\n                            <a href=\"https:\/\/standards.ieee.org\/ieee\/400.2\/3539\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE 400.2 &#8211; Guide for Field Testing of Shielded Power Cable Systems Using Very Low Frequency (VLF)<\/a>\n                            <span class=\"ref-org\">\u2014 Institute of Electrical and Electronics Engineers<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/webstore.iec.ch\/publication\/2270\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60502-2: Power Cables with Extruded Insulation and Their Accessories for Rated Voltages from 1kV to 30kV<\/a>\n                            <span class=\"ref-org\">\u2014 International Electrotechnical Commission<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/webstore.iec.ch\/publication\/1044\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60270: High-Voltage Test Techniques &#8211; Partial Discharge Measurements<\/a>\n                            <span class=\"ref-org\">\u2014 International Electrotechnical Commission<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/standards.ieee.org\/ieee\/43\/4355\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE 43 &#8211; Recommended Practice for Testing Insulation Resistance of Electric Machinery<\/a>\n                            <span class=\"ref-org\">\u2014 Institute of Electrical and Electronics Engineers<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/www.ecfr.gov\/current\/title-30\/chapter-I\/subchapter-O\/part-75\" rel=\"nofollow noopener\" target=\"_blank\">MSHA 30 CFR Part 75 &#8211; Mandatory Safety Standards &#8211; Underground Coal Mines<\/a>\n                            <span class=\"ref-org\">\u2014 U.S. Mine Safety and Health Administration (Official Regulations)<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/www.netaworld.org\/standards\/maintenance-testing-specifications\" rel=\"nofollow noopener\" target=\"_blank\">NETA MTS &#8211; Standard for Maintenance Testing Specifications for Electrical Power Equipment<\/a>\n                            <span class=\"ref-org\">\u2014 InterNational Electrical Testing Association<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/standards.ieee.org\/ieee\/400\/3450\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE 400 &#8211; Guide for Field Testing and Evaluation of the Insulation of Shielded Power Cable Systems<\/a>\n                            <span class=\"ref-org\">\u2014 Institute of Electrical and Electronics Engineers<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/webstore.iec.ch\/publication\/3481\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60811-1-1: Common Test Methods for Insulating and Sheathing Materials &#8211; General Application<\/a>\n                            <span class=\"ref-org\">\u2014 International Electrotechnical Commission<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/www.astm.org\/d0149-20.html\" rel=\"nofollow noopener\" target=\"_blank\">ASTM D149 &#8211; Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength<\/a>\n                            <span class=\"ref-org\">\u2014 American Society for Testing and Materials<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/standards.ieee.org\/ieee\/519\/4677\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE 519 &#8211; Recommended Practice for Harmonic Control in Electric Power Systems<\/a>\n                            <span class=\"ref-org\">\u2014 Institute of Electrical and Electronics Engineers<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/webstore.iec.ch\/publication\/2416\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60287-1-1: Current Rating of Cables &#8211; General, Current Rating Equations<\/a>\n                            <span class=\"ref-org\">\u2014 International Electrotechnical Commission<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/standards.ieee.org\/ieee\/48\/4026\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE 48 &#8211; Standard for Test Procedures and Requirements for Alternating-Current Cable Terminations<\/a>\n                            <span class=\"ref-org\">\u2014 Institute of Electrical and Electronics Engineers<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/standards.ieee.org\/ieee\/404\/3942\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE 404 &#8211; Standard for Extruded and Laminated Dielectric Shielded Cable Joints<\/a>\n                            <span class=\"ref-org\">\u2014 Institute of Electrical and Electronics Engineers<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/www.megger.com\/cable-test-and-diagnostics\" rel=\"nofollow noopener\" target=\"_blank\">Megger &#8211; Cable Testing and Diagnostics Application Guide<\/a>\n                            <span class=\"ref-org\">\u2014 Test Equipment Manufacturer Technical Resources<\/span>\n                        <\/li>\n                        <li>\n                            <a href=\"https:\/\/www.flir.com\/discover\/instruments\/electrical\/thermography-in-mining\/\" rel=\"nofollow noopener\" target=\"_blank\">FLIR &#8211; Infrared Thermography in Mining Applications<\/a>\n                            <span class=\"ref-org\">\u2014 Thermal Imaging Equipment Manufacturer<\/span>\n                        <\/li>\n                    <\/ul>\n                <\/div>\n            <\/section>\n\n            <section class=\"content-section\">\n                <div class=\"contact-section\">\n                    <div class=\"section-header\">\n                        <h2 class=\"section-title\">\n                            \u062a\u0648\u0627\u0635\u0644 \u0645\u0639\u0646\u0627\n                            <span class=\"section-title-sub en\">Contact Us<\/span>\n                            <span class=\"section-title-sub cn\">\u806f\u7e6b\u6211\u5011<\/span>\n                        <\/h2>\n                    <\/div>\n                    \n                    <p style=\"margin-bottom: 22px;\">\u0644\u0644\u0627\u0633\u062a\u0641\u0633\u0627\u0631\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629 \u062d\u0648\u0644 \u062a\u0634\u062e\u064a\u0635 \u0623\u0639\u0637\u0627\u0644 \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u0648\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0639\u0632\u0644 \u0648\u0627\u0644\u062a\u0635\u0648\u064a\u0631 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u060c \u0623\u0648 \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0639\u0631\u0648\u0636 \u0623\u0633\u0639\u0627\u0631 \u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0645\u062a\u0648\u0627\u0641\u0642\u0629 \u0645\u0639 \u0645\u0639\u0627\u064a\u064a\u0631 MSHA \u0648IEC \u0648IEEE\u060c \u064a\u0631\u062c\u0649 \u0627\u0644\u062a\u0648\u0627\u0635\u0644 \u0645\u0639 \u0641\u0631\u064a\u0642\u0646\u0627 \u0627\u0644\u0645\u062a\u062e\u0635\u0635.<\/p>\n\n                    <div class=\"text-en\">\n                        <strong>English:<\/strong> For technical inquiries about mining cable fault diagnosis, insulation testing, thermal imaging, or troubleshooting procedures according to IEEE 400.2, IEC 60270, and NETA MTS standards, please contact our specialized engineering team. Anhui Feichun Special Cable Co., Ltd provides comprehensive technical support for cable selection, installation, and maintenance, manufacturing high-performance mining cables compliant with MSHA, IEC 60502, DIN VDE 0250, and AS\/NZS 1802 standards for demanding underground and surface mining applications worldwide.\n                    <\/div>\n\n                    <div class=\"text-cn\">\n                        <strong>\u7e41\u9ad4\u4e2d\u6587\uff1a<\/strong> \u5982\u9700\u95dc\u65bc\u6839\u64daIEEE 400.2\u3001IEC 60270\u548cNETA MTS\u6a19\u6e96\u7684\u7926\u7528\u96fb\u7e9c\u6545\u969c\u8a3a\u65b7\u3001\u7d55\u7de3\u6e2c\u8a66\u3001\u71b1\u6210\u50cf\u6216\u6545\u969c\u6392\u9664\u7a0b\u5e8f\u7684\u6280\u8853\u8aee\u8a62\uff0c\u8acb\u806f\u7e6b\u6211\u5011\u7684\u5c08\u696d\u5de5\u7a0b\u5718\u968a\u3002\u5b89\u5fbd\u98db\u7d14\u7279\u7a2e\u96fb\u7e9c\u6709\u9650\u516c\u53f8\u70ba\u96fb\u7e9c\u9078\u578b\u3001\u5b89\u88dd\u548c\u7dad\u8b77\u63d0\u4f9b\u5168\u9762\u7684\u6280\u8853\u652f\u6301\uff0c\u751f\u7522\u7b26\u5408MSHA\u3001IEC 60502\u3001DIN VDE 0250\u548cAS\/NZS 1802\u6a19\u6e96\u7684\u9ad8\u6027\u80fd\u7926\u7528\u96fb\u7e9c\uff0c\u9069\u7528\u65bc\u5168\u7403\u8981\u6c42\u82db\u523b\u7684\u5730\u4e0b\u548c\u9732\u5929\u63a1\u7926\u61c9\u7528\u3002\n                    <\/div>\n\n                    <div class=\"contact-grid\" style=\"margin-top: 22px;\">\n                        <div class=\"contact-item\">\n                            <div class=\"contact-icon\">W<\/div>\n                            <div class=\"contact-info\">\n                                <div class=\"contact-label\">WhatsApp \u0648\u0627\u062a\u0633\u0627\u0628<\/div>\n                                <a href=\"https:\/\/wa.me\/8613855123218\" rel=\"nofollow noopener\" target=\"_blank\">+86 138 5512 3218<\/a>\n                            <\/div>\n                        <\/div>\n                        <div class=\"contact-item\">\n                            <div class=\"contact-icon\">@<\/div>\n                            <div class=\"contact-info\">\n                                <div class=\"contact-label\">\u0627\u0644\u062f\u0639\u0645 \u0627\u0644\u0641\u0646\u064a \/ Technical Support \/ \u6280\u8853\u652f\u63f4<\/div>\n                                <a href=\"mailto:tech@feichuncables.com\" rel=\"nofollow noopener\">tech@feichuncables.com<\/a>\n                            <\/div>\n                        <\/div>\n                        <div class=\"contact-item\">\n                            <div class=\"contact-icon\">@<\/div>\n                            <div class=\"contact-info\">\n                                <div class=\"contact-label\">\u0627\u0644\u0645\u0628\u064a\u0639\u0627\u062a \/ Sales \/ \u92b7\u552e<\/div>\n                                <a href=\"mailto:zihao.yang@feichuncables.com\" rel=\"nofollow noopener\">zihao.yang@feichuncables.com<\/a>\n                            <\/div>\n                        <\/div>\n                        <div class=\"contact-item\">\n                            <div class=\"contact-icon\">@<\/div>\n                            <div class=\"contact-info\">\n                                <div class=\"contact-label\">\u0627\u0644\u0627\u0633\u062a\u0641\u0633\u0627\u0631\u0627\u062a \/ Inquiries \/ \u67e5\u8a62<\/div>\n                                <a href=\"mailto:ziyu.huang@feichuncables.com\" rel=\"nofollow noopener\">ziyu.huang@feichuncables.com<\/a>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/section>\n\n        <\/div>\n    <\/main>\n\n    <footer>\n        <div class=\"container\">\n            <div class=\"footer-content\">\n                <div class=\"footer-company\">Anhui Feichun Special Cable Co., Ltd<\/div>\n                <div class=\"footer-company-cn\">\u5b89\u5fbd\u98db\u7d14\u7279\u7a2e\u96fb\u7e9c\u6709\u9650\u516c\u53f8<\/div>\n                <p class=\"footer-copy\">\u00a9 2025 Anhui Feichun Special Cable Co., Ltd. \u062c\u0645\u064a\u0639 \u0627\u0644\u062d\u0642\u0648\u0642 \u0645\u062d\u0641\u0648\u0638\u0629 \/ All Rights Reserved \/ \u7248\u6b0a\u6240\u6709<br>IEEE 400.2 | IEC 60270 | IEC 60502 | MSHA | NETA MTS Compliant Testing &#038; Products<\/p>\n            <\/div>\n        <\/div>\n    <\/footer>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"mining cable overheating, insulation damage, cable troubleshooting, partial discharge test, insulation resistance, thermal imaging, VLF testing, IEEE 400.2, IEC 60270, MSHA cable, underground mining, fault diagnosis, preventive maintenance, hot spot detection, electrical treeing, \u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u0639\u062f\u064a\u0646, \u7926\u7528\u96fb\u7e9c\u6545\u969c, infrared thermography, megger test, polarization index","protected":false},"author":1,"featured_media":4726,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"right","csco_page_header_type":"title","csco_page_load_nextpost":"","footnotes":""},"categories":[29826],"tags":[31812,1652,31735,31809,1832,9707,4046,31799,31802,3094,1922,18662,31804,1114,7419,16,31791,820,145,31787,778,31806,31797,31792,31801,31793,10735,580,173,618,20445,19076,31827,868,31826,31805,31825,31824,31789,31813,10287,31795,698,1938,828,31788,31784,31811,31482,211,31798,31612,31423,31808,20956,10496,690,31794,877,4508,17,8820,1232,31796,31807,31803,31785,1881,994,10542,11582,1091,31786,31800,990,817,31816,31820,31818,31814,31815,31817,31819,31361,31823,31821,31822,31790,31810],"class_list":["post-4725","post","type-post","status-publish","format-standard","has-post-thumbnail","category-29826","tag-ampacity-derating","tag-armored-mining-cable","tag-as-nzs-1802","tag-astm-d149","tag-cable-fault-diagnosis","tag-cable-fault-location","tag-cable-inspection-checklist","tag-cable-preventive-maintenance","tag-cable-repair-procedure","tag-cable-troubleshooting","tag-coal-mine-cable","tag-conductor-temperature","tag-contact-resistance","tag-continuous-miner-cable","tag-dielectric-breakdown","tag-din-vde-0250","tag-electrical-treeing","tag-epr-insulated-cable","tag-epr-insulation","tag-fault-diagnosis","tag-flexible-mining-cable","tag-harmonic-heating","tag-hi-pot-test","tag-hot-spot-detection","tag-i2r-losses","tag-iec-60270","tag-iec-60287","tag-iec-60502","tag-iec-60502-1","tag-iec-60502-2","tag-iec-60811","tag-iec-60840","tag-ieee-400","tag-ieee-400-2","tag-ieee-404","tag-ieee-43","tag-ieee-48","tag-ieee-519","tag-infrared-thermography","tag-insulation-aging","tag-insulation-damage","tag-insulation-damage-troubleshooting","tag-insulation-resistance","tag-insulation-resistance-test","tag-medium-voltage-mining-cable","tag-megger-test","tag-mining-cable-overheating","tag-moisture-ingress","tag-msha-30-cfr-part-75","tag-msha-cable","tag-msha-cable-testing","tag-myp-mining-cable","tag-myptj-cable","tag-neta-mts","tag-ntmcgewou-2","tag-ntscgewou-3","tag-partial-discharge-test","tag-polarization-index","tag-power-feeder-cable","tag-preventive-maintenance","tag-reeling-cable","tag-shd-gc-cable","tag-shuttle-car-cable","tag-tan-delta","tag-tdr-testing","tag-termination-overheating","tag-thermal-imaging","tag-thermal-imaging-cable","tag-trailing-cable","tag-type-g-gc","tag-underground-mining","tag-underground-mining-cable","tag-vlf-testing","tag-water-treeing","tag-xlpe-cable","tag-xlpe-insulated-cable","tag-31816","tag-31820","tag-31818","tag-31814","tag-31815","tag-31817","tag-31819","tag-31361","tag-31823","tag-31821","tag--msha--","tag-31790","tag-31810","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/4725","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/comments?post=4725"}],"version-history":[{"count":2,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/4725\/revisions"}],"predecessor-version":[{"id":4728,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/4725\/revisions\/4728"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/4726"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=4725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=4725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=4725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}