{"id":5248,"date":"2026-01-27T11:54:41","date_gmt":"2026-01-27T03:54:41","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=5248"},"modified":"2026-01-27T11:54:44","modified_gmt":"2026-01-27T03:54:44","slug":"drum-dimensions-for-type-440-11kv-cable-engineering-specification-guide","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/drum-dimensions-for-type-440-11kv-cable-engineering-specification-guide\/","title":{"rendered":"Drum Dimensions for Type 440 11kV Cable: Engineering Specification Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">What size shipping drum is required for 500m of Type 440 11kV cable?<br><em>500\u7c73 \u7684 Type 440 11kV \u77ff\u7528\u7535\u7f06\u9700\u8981\u591a\u5927\u7684\u7535\u7f06<em>\u5377\u7b52<\/em>\u6765\u8fd0\u8f93\u5462\uff1f<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"7d8f9d\" data-has-transparency=\"false\" style=\"--dominant-color: #7d8f9d;\" loading=\"lazy\" decoding=\"async\" width=\"951\" height=\"628\" sizes=\"auto, (max-width: 951px) 100vw, 951px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-643-951x628.avif\" alt=\"\" class=\"wp-image-5249 not-transparent\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-643-951x628.avif 951w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-643-300x198.avif 300w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-643-768x507.avif 768w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-643-400x264.avif 400w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-643-800x528.avif 800w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-643-832x549.avif 832w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-643.avif 1021w\" \/><\/figure>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <title>Drum Dimensions for Type 440 11kV Cable: Engineering Guide | Anhui Feichun Special Cable Co., Ltd<\/title>\n    <meta name=\"description\" content=\"Professional engineering guide to shipping drum dimensions for 500m of Type 440 11kV mining cable. Comprehensive technical specifications, bend radius calculations, and industry standards.\">\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=IBM+Plex+Mono:wght@400;500;600&#038;family=Inter:wght@400;500;600;700&#038;display=swap\" rel=\"stylesheet\">\n    \n    <style>\n        :root {\n            --color-bg: #ffffff;\n            --color-surface: #f8f9fa;\n            --color-surface-elevated: #ffffff;\n            --color-border: #e0e0e0;\n            --color-text-primary: #1a1a1a;\n            --color-text-secondary: #666666;\n            --color-text-muted: #999999;\n            --color-accent: #c41e3a;\n            --color-accent-hover: #a01830;\n            --color-warning: #ff6b00;\n            --color-info: #0066cc;\n            --color-success: #2e7d32;\n            --color-table-header: #2c3e50;\n            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12px;\n                font-size: 0.85rem;\n            }\n        }\n\n        \/* Code elements *\/\n        code {\n            font-family: var(--font-mono);\n            background: var(--color-surface);\n            padding: 2px 6px;\n            border-radius: 2px;\n            font-size: 0.9em;\n        }\n    <\/style>\n<\/head>\n<body>\n    <header>\n        <div class=\"container\">\n            <div class=\"header-content\">\n                <div>\n                    <div class=\"company-name\">Anhui Feichun Special Cable Co., Ltd<\/div>\n                    <div class=\"company-name-cn\">\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8<\/div>\n                <\/div>\n                <h1>Drum Dimensions for Type 440 11kV Cable: Engineering Specification Guide<\/h1>\n                <p class=\"subtitle\">What size shipping drum is required for 500m of Type 440 11kV cable?<br>\n                <span class=\"cn-text\">500\u7c73Type 440 11kV\u7535\u7f06\u9700\u8981\u591a\u5927\u7684\u8fd0\u8f93\u5377\u7b52\uff1f<\/span><\/p>\n            <\/div>\n        <\/div>\n    <\/header>\n\n    <main>\n        <div class=\"container\">\n            <article>\n                <section>\n                    <h2>Executive Summary \u6267\u884c\u6458\u8981<\/h2>\n                    <p>For a 500-meter length of Type 440 11kV mining cable, the required shipping drum dimensions are fundamentally determined by the cable&#8217;s minimum bend radius and physical dimensions. Based on industry standards from AS\/NZS 2802:2000 and IEC 60502-2, proper drum sizing ensures cable integrity during transportation and prevents damage to the cable&#8217;s internal structure, particularly the semiconductive screens and EPR insulation critical for medium voltage applications.<\/p>\n                    <p class=\"cn-text\">\u5bf9\u4e8e500\u7c73\u957f\u7684Type 440 11kV\u77ff\u7528\u7535\u7f06\uff0c\u6240\u9700\u7684\u8fd0\u8f93\u5377\u7b52\u5c3a\u5bf8\u4e3b\u8981\u7531\u7535\u7f06\u7684\u6700\u5c0f\u5f2f\u66f2\u534a\u5f84\u548c\u7269\u7406\u5c3a\u5bf8\u51b3\u5b9a\u3002\u6839\u636eAS\/NZS 2802:2000\u548cIEC 60502-2\u7684\u884c\u4e1a\u6807\u51c6\uff0c\u6b63\u786e\u7684\u5377\u7b52\u5c3a\u5bf8\u53ef\u786e\u4fdd\u8fd0\u8f93\u8fc7\u7a0b\u4e2d\u7684\u7535\u7f06\u5b8c\u6574\u6027\uff0c\u5e76\u9632\u6b62\u635f\u574f\u7535\u7f06\u7684\u5185\u90e8\u7ed3\u6784\uff0c\u7279\u522b\u662f\u5bf9\u4e2d\u538b\u5e94\u7528\u81f3\u5173\u91cd\u8981\u7684\u534a\u5bfc\u4f53\u5c4f\u853d\u5c42\u548cEPR\u7edd\u7f18\u5c42\u3002<\/p>\n\n                    <div class=\"alert alert-info\">\n                        <strong>Critical Engineering Requirement \u5173\u952e\u5de5\u7a0b\u8981\u6c42<\/strong>\n                        The drum core diameter must be at least 12 times the overall cable diameter for shielded medium voltage cables to maintain structural integrity and prevent insulation damage during winding and storage.\n                        <span class=\"cn-text\">\u5bf9\u4e8e\u5c4f\u853d\u4e2d\u538b\u7535\u7f06\uff0c\u5377\u7b52\u82af\u76f4\u5f84\u5fc5\u987b\u81f3\u5c11\u4e3a\u7535\u7f06\u603b\u76f4\u5f84\u768412\u500d\uff0c\u4ee5\u5728\u7ed5\u7ebf\u548c\u50a8\u5b58\u8fc7\u7a0b\u4e2d\u4fdd\u6301\u7ed3\u6784\u5b8c\u6574\u6027\u5e76\u9632\u6b62\u7edd\u7f18\u635f\u574f\u3002<\/span>\n                    <\/div>\n                <\/section>\n\n                <section>\n                    <h2>Type 440 Cable Technical Specifications Type 440\u7535\u7f06\u6280\u672f\u89c4\u683c<\/h2>\n                    \n                    <h3>Standard Compliance \u6807\u51c6\u7b26\u5408\u6027<\/h3>\n                    <p>Type 440 cables are manufactured in accordance with AS\/NZS 2802:2000, which specifies requirements for elastomer-insulated and sheathed flexible reeling and trailing cables for mining operations. These cables are designed for surface mining, underground mining (excluding coal mining), and general industrial use where movable equipment requires electrical power at system voltages from 1.1\/1.1 kV up to 22\/22 kV.<\/p>\n                    <p class=\"cn-text\">Type 440\u7535\u7f06\u6309\u7167AS\/NZS 2802:2000\u6807\u51c6\u5236\u9020\uff0c\u8be5\u6807\u51c6\u89c4\u5b9a\u4e86\u7528\u4e8e\u91c7\u77ff\u4f5c\u4e1a\u7684\u5f39\u6027\u4f53\u7edd\u7f18\u548c\u62a4\u5957\u67d4\u6027\u5377\u7b52\u548c\u62d6\u66f3\u7535\u7f06\u7684\u8981\u6c42\u3002\u8fd9\u4e9b\u7535\u7f06\u8bbe\u8ba1\u7528\u4e8e\u9732\u5929\u91c7\u77ff\u3001\u5730\u4e0b\u91c7\u77ff\uff08\u4e0d\u5305\u62ec\u7164\u77ff\uff09\u548c\u4e00\u822c\u5de5\u4e1a\u7528\u9014\uff0c\u5176\u4e2d\u79fb\u52a8\u8bbe\u5907\u9700\u89811.1\/1.1 kV\u81f322\/22 kV\u7cfb\u7edf\u7535\u538b\u7684\u7535\u529b\u3002<\/p>\n\n                    <div class=\"citation\">\n                        Source: AS\/NZS 2802:2000 &#8211; Electric cables &#8211; Reeling and trailing &#8211; For mining and general use\n                        <a href=\"https:\/\/www.elandcables.com\/cables\/type-440-and-type-441-flexible-rubber-mining-cables\" rel=\"nofollow noopener\" target=\"_blank\">Eland Cables Technical Documentation<\/a>\n                    <\/div>\n\n                    <h3>Construction Details \u7ed3\u6784\u7ec6\u8282<\/h3>\n                    <div class=\"spec-box\">\n                        <h4>Type 440 11kV Cable Construction Components<\/h4>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Conductor \u5bfc\u4f53<\/div>\n                            <div class=\"spec-value\">Flexible stranded tinned annealed copper (Class 2)<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Conductor Screen \u5bfc\u4f53\u5c4f\u853d<\/div>\n                            <div class=\"spec-value\">Semiconductive compound (for 3.3kV and above)<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Insulation \u7edd\u7f18<\/div>\n                            <div class=\"spec-value\">EPR (Ethylene Propylene Rubber) R-EP-90<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Insulation Screen \u7edd\u7f18\u5c4f\u853d<\/div>\n                            <div class=\"spec-value\">Semiconductive tape<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Composite Screen \u590d\u5408\u5c4f\u853d<\/div>\n                            <div class=\"spec-value\">Tinned copper braiding interwoven with polyester yarn<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Configuration \u914d\u7f6e<\/div>\n                            <div class=\"spec-value\">3 power cores + 3 earth cores + 1 pilot core<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Outer Sheath \u5916\u62a4\u5957<\/div>\n                            <div class=\"spec-value\">Heavy-duty Polychloroprene (HD-PCP)<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Operating Temperature \u5de5\u4f5c\u6e29\u5ea6<\/div>\n                            <div class=\"spec-value\">-25\u00b0C to +90\u00b0C<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Voltage Rating \u989d\u5b9a\u7535\u538b<\/div>\n                            <div class=\"spec-value\">11\/11 kV (U\u2080\/U)<\/div>\n                        <\/div>\n                    <\/div>\n\n                    <div class=\"citation\">\n                        Source: AS\/NZS 1125:2001 and AS\/NZS 3808 Standards\n                        <a href=\"https:\/\/www.znergycable.com\/australian-mining-cable\" rel=\"nofollow noopener\" target=\"_blank\">Znergy Cable Mining Cable Specifications<\/a>\n                    <\/div>\n                <\/section>\n\n                <section>\n                    <h2>Minimum Bend Radius Requirements \u6700\u5c0f\u5f2f\u66f2\u534a\u5f84\u8981\u6c42<\/h2>\n                    \n                    <h3>Industry Standards for Shielded MV Cables \u5c4f\u853d\u4e2d\u538b\u7535\u7f06\u884c\u4e1a\u6807\u51c6<\/h3>\n                    <p>The minimum bend radius for medium voltage shielded cables is critical to prevent damage to the metallic shields, semiconductive layers, and insulation systems. When bent too sharply, helical metal tapes can separate, buckle, and cut into the insulation, potentially causing corona discharge issues that may not be immediately apparent due to the semiconductive shielding layers concealing the damage.<\/p>\n                    <p class=\"cn-text\">\u4e2d\u538b\u5c4f\u853d\u7535\u7f06\u7684\u6700\u5c0f\u5f2f\u66f2\u534a\u5f84\u5bf9\u4e8e\u9632\u6b62\u91d1\u5c5e\u5c4f\u853d\u5c42\u3001\u534a\u5bfc\u7535\u5c42\u548c\u7edd\u7f18\u7cfb\u7edf\u7684\u635f\u574f\u81f3\u5173\u91cd\u8981\u3002\u5f53\u5f2f\u66f2\u8fc7\u4e8e\u6025\u5267\u65f6\uff0c\u87ba\u65cb\u91d1\u5c5e\u5e26\u53ef\u80fd\u4f1a\u5206\u79bb\u3001\u5f2f\u66f2\u5e76\u5207\u5165\u7edd\u7f18\u5c42\uff0c\u53ef\u80fd\u5bfc\u81f4\u7535\u6655\u653e\u7535\u95ee\u9898\uff0c\u7531\u4e8e\u534a\u5bfc\u4f53\u5c4f\u853d\u5c42\u63a9\u76d6\u4e86\u635f\u574f\uff0c\u8fd9\u4e9b\u95ee\u9898\u53ef\u80fd\u4e0d\u4f1a\u7acb\u5373\u663e\u73b0\u3002<\/p>\n\n                    <div class=\"alert alert-warning\">\n                        <strong>Critical Safety Standard \u5173\u952e\u5b89\u5168\u6807\u51c6<\/strong>\n                        According to NEC 300.34 and IEEE 576-2000, the minimum bending radius for all cables with metallic shields is 12 times the overall cable diameter during and after installation. For multiconductor cables with individually shielded conductors, use the greater of: 12\u00d7 individual conductor diameter OR 7\u00d7 overall cable diameter.\n                        <span class=\"cn-text\">\u6839\u636eNEC 300.34\u548cIEEE 576-2000\uff0c\u5728\u5b89\u88c5\u671f\u95f4\u548c\u4e4b\u540e\uff0c\u6240\u6709\u5e26\u6709\u91d1\u5c5e\u5c4f\u853d\u7684\u7535\u7f06\u7684\u6700\u5c0f\u5f2f\u66f2\u534a\u5f84\u4e3a\u7535\u7f06\u603b\u76f4\u5f84\u768412\u500d\u3002\u5bf9\u4e8e\u5177\u6709\u5355\u72ec\u5c4f\u853d\u5bfc\u4f53\u7684\u591a\u82af\u7535\u7f06\uff0c\u4f7f\u7528\u4ee5\u4e0b\u8f83\u5927\u503c\uff1a12\u00d7\u5355\u4e2a\u5bfc\u4f53\u76f4\u5f84\u62167\u00d7\u603b\u7535\u7f06\u76f4\u5f84\u3002<\/span>\n                    <\/div>\n\n                    <div class=\"citation\">\n                        Source: National Electrical Code (NEC) Section 300.34, IEEE Standard 576-2000\n                        <a href=\"https:\/\/www.anixter.com\/en_us\/resources\/literature\/wire-wisdom\/minimum-bend-radius.html\" rel=\"nofollow noopener\" target=\"_blank\">Anixter Wire Wisdom: Minimum Bend Radius<\/a>\n                    <\/div>\n\n                    <h3>Application-Specific Bend Radius Multipliers \u7279\u5b9a\u5e94\u7528\u7684\u5f2f\u66f2\u534a\u5f84\u500d\u6570<\/h3>\n                    \n                    <div class=\"table-container\">\n                        <table>\n                            <thead>\n                                <tr>\n                                    <th>Cable Type \u7535\u7f06\u7c7b\u578b<\/th>\n                                    <th>Installation \u5b89\u88c5<\/th>\n                                    <th>Static\/Training \u9759\u6001\/\u5b9a\u4f4d<\/th>\n                                    <th>Standard \u6807\u51c6<\/th>\n                                <\/tr>\n                            <\/thead>\n                            <tbody>\n                                <tr>\n                                    <td>Single Core Shielded MV<br><span class=\"cn-text\">\u5355\u82af\u5c4f\u853d\u4e2d\u538b<\/span><\/td>\n                                    <td>12\u00d7 OD<\/td>\n                                    <td>12\u00d7 OD<\/td>\n                                    <td>NEC 300.34<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Multi-core Shielded (Type 440)<br><span class=\"cn-text\">\u591a\u82af\u5c4f\u853d(Type 440)<\/span><\/td>\n                                    <td>12\u00d7 or 7\u00d7 OD*<\/td>\n                                    <td>7\u00d7 OD<\/td>\n                                    <td>AS\/NZS 2802, IEEE 576<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Mining Trailing Cable<br><span class=\"cn-text\">\u77ff\u7528\u62d6\u7f06<\/span><\/td>\n                                    <td>6-8\u00d7 OD<\/td>\n                                    <td>6\u00d7 OD<\/td>\n                                    <td>AS\/NZS 2802<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Armoured LV Cable<br><span class=\"cn-text\">\u94e0\u88c5\u4f4e\u538b\u7535\u7f06<\/span><\/td>\n                                    <td>6\u00d7 OD<\/td>\n                                    <td>6\u00d7 OD<\/td>\n                                    <td>IEC 60502-1<\/td>\n                                <\/tr>\n                            <\/tbody>\n                        <\/table>\n                    <\/div>\n                    <p style=\"font-size: 0.85rem; color: var(--color-text-muted); margin-top: 12px;\">*Use greater of 12\u00d7 individual shielded conductor diameter or 7\u00d7 overall cable diameter<\/p>\n\n                    <div class=\"citation\">\n                        Source: ICEA Standards, NEC 2020, AS\/NZS 2802:2000\n                        <a href=\"https:\/\/www.southwire.com\/medias\/SW-1003583-Training-and-Minimum-Bend-Radius-Technical-Document-LO.pdf\" rel=\"nofollow noopener\" target=\"_blank\">Southwire Technical Document: Training and Minimum Bend Radius<\/a>\n                    <\/div>\n                <\/section>\n\n                <section>\n                    <h2>Drum Sizing Calculations \u5377\u7b52\u5c3a\u5bf8\u8ba1\u7b97<\/h2>\n                    \n                    <h3>Step 1: Determine Cable Overall Diameter \u6b65\u9aa41\uff1a\u786e\u5b9a\u7535\u7f06\u603b\u76f4\u5f84<\/h3>\n                    <p>The overall diameter of Type 440 11kV cable varies significantly based on conductor cross-sectional area. For typical mining applications with medium power requirements, common conductor sizes range from 35mm\u00b2 to 95mm\u00b2. According to manufacturer specifications and AS\/NZS 2802 dimensional tables, the approximate overall diameters are:<\/p>\n                    <p class=\"cn-text\">Type 440 11kV\u7535\u7f06\u7684\u603b\u76f4\u5f84\u6839\u636e\u5bfc\u4f53\u6a2a\u622a\u9762\u79ef\u800c\u663e\u8457\u53d8\u5316\u3002\u5bf9\u4e8e\u5177\u6709\u4e2d\u7b49\u529f\u7387\u8981\u6c42\u7684\u5178\u578b\u91c7\u77ff\u5e94\u7528\uff0c\u5e38\u89c1\u7684\u5bfc\u4f53\u5c3a\u5bf8\u8303\u56f4\u4e3a35mm\u00b2\u81f395mm\u00b2\u3002\u6839\u636e\u5236\u9020\u5546\u89c4\u683c\u548cAS\/NZS 2802\u5c3a\u5bf8\u8868\uff0c\u8fd1\u4f3c\u603b\u76f4\u5f84\u4e3a\uff1a<\/p>\n\n                    <div class=\"table-container\">\n                        <table>\n                            <thead>\n                                <tr>\n                                    <th>Conductor Size<br>\u5bfc\u4f53\u5c3a\u5bf8<\/th>\n                                    <th>Overall Diameter (mm)<br>\u603b\u76f4\u5f84<\/th>\n                                    <th>Weight (kg\/100m)<br>\u91cd\u91cf<\/th>\n                                    <th>Min. Drum Core (12\u00d7)<br>\u6700\u5c0f\u5377\u7b52\u82af<\/th>\n                                <\/tr>\n                            <\/thead>\n                            <tbody>\n                                <tr>\n                                    <td>25 mm\u00b2<\/td>\n                                    <td>58-62 mm<\/td>\n                                    <td>450-520<\/td>\n                                    <td>696-744 mm<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>35 mm\u00b2<\/td>\n                                    <td>64-68 mm<\/td>\n                                    <td>520-600<\/td>\n                                    <td>768-816 mm<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>50 mm\u00b2<\/td>\n                                    <td>70-75 mm<\/td>\n                                    <td>620-720<\/td>\n                                    <td>840-900 mm<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>70 mm\u00b2<\/td>\n                                    <td>78-84 mm<\/td>\n                                    <td>750-880<\/td>\n                                    <td>936-1008 mm<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>95 mm\u00b2<\/td>\n                                    <td>86-92 mm<\/td>\n                                    <td>900-1050<\/td>\n                                    <td>1032-1104 mm<\/td>\n                                <\/tr>\n                            <\/tbody>\n                        <\/table>\n                    <\/div>\n\n                    <div class=\"citation\">\n                        Source: AS\/NZS 2802:2000 Dimensional Tables, Manufacturer Specifications\n                        <a href=\"https:\/\/www.amplexmining.com.au\/asnzs-2802-type-440-trailing-cables-powering-australias-gold-and-copper-mining-operations\" rel=\"nofollow noopener\" target=\"_blank\">Amplex Mining Cable Technical Guide<\/a>\n                    <\/div>\n\n                    <h3>Step 2: Calculate Minimum Drum Core Diameter \u6b65\u9aa42\uff1a\u8ba1\u7b97\u6700\u5c0f\u5377\u7b52\u82af\u76f4\u5f84<\/h3>\n                    <p>Using the standard bend radius multiplier of 12\u00d7 for shielded medium voltage cables during winding operations, we can calculate the minimum drum core diameter:<\/p>\n                    <p class=\"cn-text\">\u4f7f\u752812\u500d\u7684\u6807\u51c6\u5f2f\u66f2\u534a\u5f84\u500d\u6570\u7528\u4e8e\u7f20\u7ed5\u64cd\u4f5c\u671f\u95f4\u7684\u5c4f\u853d\u4e2d\u538b\u7535\u7f06\uff0c\u6211\u4eec\u53ef\u4ee5\u8ba1\u7b97\u6700\u5c0f\u5377\u7b52\u82af\u76f4\u5f84\uff1a<\/p>\n\n                    <div class=\"formula\">\n                        D<sub>core(min)<\/sub> = 12 \u00d7 D<sub>cable<\/sub> + Safety Factor\n                        <br><br>\n                        Where \u5176\u4e2d\uff1a\n                        <br>\u2022 D<sub>core(min)<\/sub> = Minimum drum core diameter \u6700\u5c0f\u5377\u7b52\u82af\u76f4\u5f84\n                        <br>\u2022 D<sub>cable<\/sub> = Overall cable diameter \u7535\u7f06\u603b\u76f4\u5f84\n                        <br>\u2022 Safety Factor = Typically 1.1-1.2\u00d7 for manufacturing tolerance \u5236\u9020\u516c\u5dee\u7684\u5b89\u5168\u7cfb\u6570\n                    <\/div>\n\n                    <div class=\"alert alert-success\">\n                        <strong>Example Calculation for 70mm\u00b2 Type 440 11kV Cable \u793a\u4f8b\u8ba1\u7b97<\/strong>\n                        Given: Cable OD = 80mm (average for 70mm\u00b2 conductor)\n                        <br>Minimum drum core = 12 \u00d7 80mm = 960mm\n                        <br>With safety factor (1.15): 960mm \u00d7 1.15 = 1,104mm\n                        <br><strong>Recommended standard drum core: 1,100-1,200mm<\/strong>\n                        <br><br>\n                        <span class=\"cn-text\">\u7ed9\u5b9a\uff1a\u7535\u7f06\u5916\u5f84 = 80mm\uff0870mm\u00b2\u5bfc\u4f53\u7684\u5e73\u5747\u503c\uff09<br>\n                        \u6700\u5c0f\u5377\u7b52\u82af = 12 \u00d7 80mm = 960mm<br>\n                        \u5e26\u5b89\u5168\u7cfb\u6570(1.15)\uff1a960mm \u00d7 1.15 = 1,104mm<br>\n                        <strong>\u63a8\u8350\u6807\u51c6\u5377\u7b52\u82af\uff1a1,100-1,200mm<\/strong><\/span>\n                    <\/div>\n\n                    <h3>Step 3: Calculate Required Drum Dimensions for 500m \u6b65\u9aa43\uff1a\u8ba1\u7b97500\u7c73\u6240\u9700\u7684\u5377\u7b52\u5c3a\u5bf8<\/h3>\n                    <p>The flange diameter must accommodate the cable build-up height plus adequate clearance. The cable length capacity formula for a drum is:<\/p>\n                    <p class=\"cn-text\">\u6cd5\u5170\u76f4\u5f84\u5fc5\u987b\u5bb9\u7eb3\u7535\u7f06\u5806\u79ef\u9ad8\u5ea6\u52a0\u4e0a\u8db3\u591f\u7684\u95f4\u9699\u3002\u5377\u7b52\u7684\u7535\u7f06\u957f\u5ea6\u5bb9\u91cf\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n                    <div class=\"formula\">\n                        L = (D<sub>flange<\/sub>\u00b2 &#8211; D<sub>core<\/sub>\u00b2) \/ (4 \u00d7 D<sub>cable<\/sub> \u00d7 W<sub>drum<\/sub>)\n                        <br><br>\n                        Rearranging for flange diameter \u91cd\u65b0\u6392\u5217\u6c42\u6cd5\u5170\u76f4\u5f84\uff1a\n                        <br>D<sub>flange<\/sub> = \u221a[D<sub>core<\/sub>\u00b2 + (4 \u00d7 L \u00d7 D<sub>cable<\/sub> \u00d7 W<sub>drum<\/sub>)]\n                        <br><br>\n                        Where \u5176\u4e2d\uff1a\n                        <br>\u2022 L = Cable length in meters \u7535\u7f06\u957f\u5ea6\uff08\u7c73\uff09\n                        <br>\u2022 D<sub>flange<\/sub> = Flange diameter \u6cd5\u5170\u76f4\u5f84\n                        <br>\u2022 D<sub>core<\/sub> = Drum core diameter \u5377\u7b52\u82af\u76f4\u5f84\n                        <br>\u2022 D<sub>cable<\/sub> = Cable outer diameter \u7535\u7f06\u5916\u5f84\n                        <br>\u2022 W<sub>drum<\/sub> = Drum traverse width \u5377\u7b52\u6a2a\u5411\u5bbd\u5ea6\n                    <\/div>\n\n                    <div class=\"citation\">\n                        Source: Cable reel capacity calculation standards\n                        <a href=\"https:\/\/kwcalc.com\/cable-and-wires\/cable-drum-size-calculator.html\" rel=\"nofollow noopener\" target=\"_blank\">KW Calc: Cable Drum Size Calculator<\/a>\n                    <\/div>\n\n                    <h3>Complete Drum Specification for 500m Type 440 11kV (70mm\u00b2) \u5b8c\u6574\u5377\u7b52\u89c4\u683c<\/h3>\n                    <div class=\"spec-box\">\n                        <h4>Recommended Drum Dimensions \u63a8\u8350\u5377\u7b52\u5c3a\u5bf8<\/h4>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Drum Core Diameter \u5377\u7b52\u82af\u76f4\u5f84<\/div>\n                            <div class=\"spec-value\">1,200 mm (minimum 1,100 mm)<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Flange Diameter \u6cd5\u5170\u76f4\u5f84<\/div>\n                            <div class=\"spec-value\">2,000-2,200 mm<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Drum Width (Traverse) \u5377\u7b52\u5bbd\u5ea6<\/div>\n                            <div class=\"spec-value\">800-1,000 mm<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Maximum Build Height \u6700\u5927\u5806\u79ef\u9ad8\u5ea6<\/div>\n                            <div class=\"spec-value\">400-500 mm (80% of available space)<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Total Cable Weight \u7535\u7f06\u603b\u91cd\u91cf<\/div>\n                            <div class=\"spec-value\">~4,000 kg (500m \u00d7 8 kg\/m)<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Drum Material \u5377\u7b52\u6750\u6599<\/div>\n                            <div class=\"spec-value\">Heavy-duty timber or steel<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Drum Weight (Empty) \u7a7a\u5377\u7b52\u91cd\u91cf<\/div>\n                            <div class=\"spec-value\">800-1,200 kg<\/div>\n                        <\/div>\n                        <div class=\"spec-item\">\n                            <div class=\"spec-label\">Total Shipping Weight \u603b\u8fd0\u8f93\u91cd\u91cf<\/div>\n                            <div class=\"spec-value\">~5,000-5,200 kg<\/div>\n                        <\/div>\n                    <\/div>\n\n                    <div class=\"alert alert-info\">\n                        <strong>Industry Standard Practice \u884c\u4e1a\u6807\u51c6\u5b9e\u8df5<\/strong>\n                        According to IEC 60502-2 and common industry practice, medium voltage cables should be supplied on drums with lengths \u2264500m unless otherwise agreed. The drum should be filled to approximately 80% capacity to maintain flange clearance and reduce spill risk during transport.\n                        <span class=\"cn-text\">\u6839\u636eIEC 60502-2\u548c\u5e38\u89c1\u884c\u4e1a\u60ef\u4f8b\uff0c\u4e2d\u538b\u7535\u7f06\u5e94\u5728\u5377\u7b52\u4e0a\u4f9b\u5e94\uff0c\u957f\u5ea6\u2264500\u7c73\uff0c\u9664\u975e\u53e6\u6709\u7ea6\u5b9a\u3002\u5377\u7b52\u5e94\u586b\u5145\u81f3\u7ea680%\u7684\u5bb9\u91cf\uff0c\u4ee5\u4fdd\u6301\u6cd5\u5170\u95f4\u9699\u5e76\u964d\u4f4e\u8fd0\u8f93\u8fc7\u7a0b\u4e2d\u7684\u6ea2\u51fa\u98ce\u9669\u3002<\/span>\n                    <\/div>\n\n                    <div class=\"citation\">\n                        Source: IEC 60502-2:2014 Medium Voltage Cable Standards\n                        <a href=\"https:\/\/sgcables.com\/iec-60502-power-cables\/\" rel=\"nofollow noopener\" target=\"_blank\">SG Cables: IEC 60502 Power Cable Standards<\/a>\n                    <\/div>\n                <\/section>\n\n                <section>\n                    <h2>Drum Selection Considerations \u5377\u7b52\u9009\u62e9\u8003\u8651\u56e0\u7d20<\/h2>\n                    \n                    <h3>Material Selection \u6750\u6599\u9009\u62e9<\/h3>\n                    <p>Cable drums are manufactured from various materials, each with specific advantages for different applications and transport conditions:<\/p>\n                    <p class=\"cn-text\">\u7535\u7f06\u5377\u7b52\u7531\u5404\u79cd\u6750\u6599\u5236\u6210\uff0c\u6bcf\u79cd\u6750\u6599\u5728\u4e0d\u540c\u5e94\u7528\u548c\u8fd0\u8f93\u6761\u4ef6\u4e0b\u90fd\u6709\u7279\u5b9a\u4f18\u52bf\uff1a<\/p>\n\n                    <div class=\"table-container\">\n                        <table>\n                            <thead>\n                                <tr>\n                                    <th>Material \u6750\u6599<\/th>\n                                    <th>Advantages \u4f18\u52bf<\/th>\n                                    <th>Applications \u5e94\u7528<\/th>\n                                    <th>Weight Class \u91cd\u91cf\u7b49\u7ea7<\/th>\n                                <\/tr>\n                            <\/thead>\n                            <tbody>\n                                <tr>\n                                    <td>Heavy-Duty Timber<br><span class=\"cn-text\">\u91cd\u578b\u6728\u6750<\/span><\/td>\n                                    <td>Cost-effective, repairable, good for export<br><span class=\"cn-text\">\u7ecf\u6d4e\u5b9e\u60e0\uff0c\u53ef\u4fee\u590d\uff0c\u9002\u5408\u51fa\u53e3<\/span><\/td>\n                                    <td>Standard MV cables, single-use or limited reuse<br><span class=\"cn-text\">\u6807\u51c6\u4e2d\u538b\u7535\u7f06\uff0c\u4e00\u6b21\u6027\u6216\u6709\u9650\u91cd\u590d\u4f7f\u7528<\/span><\/td>\n                                    <td>Medium<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Steel<br><span class=\"cn-text\">\u94a2<\/span><\/td>\n                                    <td>High strength, returnable, long service life<br><span class=\"cn-text\">\u9ad8\u5f3a\u5ea6\uff0c\u53ef\u9000\u8fd8\uff0c\u4f7f\u7528\u5bff\u547d\u957f<\/span><\/td>\n                                    <td>Heavy cables, multiple reuse cycles<br><span class=\"cn-text\">\u91cd\u578b\u7535\u7f06\uff0c\u591a\u6b21\u91cd\u590d\u4f7f\u7528\u5468\u671f<\/span><\/td>\n                                    <td>Heavy<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Plywood<br><span class=\"cn-text\">\u80f6\u5408\u677f<\/span><\/td>\n                                    <td>Lighter weight, weather resistant<br><span class=\"cn-text\">\u8f83\u8f7b\uff0c\u8010\u5019\u6027<\/span><\/td>\n                                    <td>Indoor storage, lighter cable loads<br><span class=\"cn-text\">\u5ba4\u5185\u50a8\u5b58\uff0c\u8f83\u8f7b\u7684\u7535\u7f06\u8f7d\u8377<\/span><\/td>\n                                    <td>Light-Medium<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Composite<br><span class=\"cn-text\">\u590d\u5408\u6750\u6599<\/span><\/td>\n                                    <td>Corrosion resistant, consistent dimensions<br><span class=\"cn-text\">\u8010\u8150\u8680\uff0c\u5c3a\u5bf8\u4e00\u81f4<\/span><\/td>\n                                    <td>Outdoor storage, marine environments<br><span class=\"cn-text\">\u6237\u5916\u50a8\u5b58\uff0c\u6d77\u6d0b\u73af\u5883<\/span><\/td>\n                                    <td>Medium<\/td>\n                                <\/tr>\n                            <\/tbody>\n                        <\/table>\n                    <\/div>\n\n                    <div class=\"citation\">\n                        Source: Eland Cables Drum Specifications\n                        <a href=\"https:\/\/www.elandcables.com\/the-cable-lab\/faqs\/faq-what-are-standard-cable-drums-weights-and-dimensions\" rel=\"nofollow noopener\" target=\"_blank\">Eland Cables: Standard Cable Drum Weights and Dimensions<\/a>\n                    <\/div>\n\n                    <h3>Transport and Handling Requirements \u8fd0\u8f93\u548c\u642c\u8fd0\u8981\u6c42<\/h3>\n                    <div class=\"alert alert-warning\">\n                        <strong>Safety Notice \u5b89\u5168\u6ce8\u610f\u4e8b\u9879<\/strong>\n                        Cable drums can be heavy and difficult to handle manually. A proper risk assessment should be conducted before handling drums. For a 500m Type 440 11kV cable with total shipping weight of ~5,000kg, mechanical lifting equipment (forklift rated \u22656 tons or overhead crane) is mandatory.\n                        <span class=\"cn-text\">\u7535\u7f06\u5377\u7b52\u53ef\u80fd\u5f88\u91cd\u4e14\u96be\u4ee5\u624b\u52a8\u642c\u8fd0\u3002\u5728\u5904\u7406\u5377\u7b52\u4e4b\u524d\u5e94\u8fdb\u884c\u9002\u5f53\u7684\u98ce\u9669\u8bc4\u4f30\u3002\u5bf9\u4e8e\u603b\u8fd0\u8f93\u91cd\u91cf\u7ea65,000\u516c\u65a4\u7684500\u7c73Type 440 11kV\u7535\u7f06\uff0c\u673a\u68b0\u8d77\u91cd\u8bbe\u5907\uff08\u989d\u5b9a\u22656\u5428\u7684\u53c9\u8f66\u6216\u6865\u5f0f\u8d77\u91cd\u673a\uff09\u662f\u5fc5\u9700\u7684\u3002<\/span>\n                    <\/div>\n\n                    <h3>Drum Marking Requirements \u5377\u7b52\u6807\u8bb0\u8981\u6c42<\/h3>\n                    <p>According to IEC 60502 and AS\/NZS 2802, every cable drum must be marked with the following information at intervals of \u2264500mm on the outer sheath:<\/p>\n                    <p class=\"cn-text\">\u6839\u636eIEC 60502\u548cAS\/NZS 2802\uff0c\u6bcf\u4e2a\u7535\u7f06\u5377\u7b52\u5fc5\u987b\u5728\u5916\u62a4\u5957\u4e0a\u4ee5\u2264500mm\u7684\u95f4\u9694\u6807\u8bb0\u4ee5\u4e0b\u4fe1\u606f\uff1a<\/p>\n\n                    <ul style=\"margin-left: 24px; line-height: 2;\">\n                        <li>Manufacturer name and trademark \u5236\u9020\u5546\u540d\u79f0\u548c\u5546\u6807<\/li>\n                        <li>Cable type and voltage rating \u7535\u7f06\u7c7b\u578b\u548c\u989d\u5b9a\u7535\u538b<\/li>\n                        <li>Cable construction specification \u7535\u7f06\u7ed3\u6784\u89c4\u683c<\/li>\n                        <li>Manufacturing date and batch number \u5236\u9020\u65e5\u671f\u548c\u6279\u53f7<\/li>\n                        <li>Drum number and meter marking \u5377\u7b52\u7f16\u53f7\u548c\u7c73\u6807\u8bb0<\/li>\n                        <li>Gross and net weight \u6bdb\u91cd\u548c\u51c0\u91cd<\/li>\n                        <li>Declaration of Performance (DoP) or Certificate of Conformity (CoC) number \u6027\u80fd\u58f0\u660e(DoP)\u6216\u5408\u683c\u8bc1\u4e66(CoC)\u7f16\u53f7<\/li>\n                        <li>Reel-off direction arrow \u91ca\u653e\u65b9\u5411\u7bad\u5934<\/li>\n                        <li>QR code linking to type-test report (optional but increasingly common) \u94fe\u63a5\u5230\u578b\u5f0f\u8bd5\u9a8c\u62a5\u544a\u7684QR\u7801\uff08\u53ef\u9009\u4f46\u8d8a\u6765\u8d8a\u5e38\u89c1\uff09<\/li>\n                    <\/ul>\n\n                    <div class=\"citation\">\n                        Source: IEC 60502-2:2014, AS\/NZS 2802:2000 Marking Requirements\n                        <a href=\"https:\/\/sgcables.com\/iec-60502-power-cables\/\" rel=\"nofollow noopener\" target=\"_blank\">SG Cables: IEC 60502 Drum Marking Standards<\/a>\n                    <\/div>\n                <\/section>\n\n                <section>\n                    <h2>Installation and Storage Guidelines \u5b89\u88c5\u548c\u5b58\u50a8\u6307\u5357<\/h2>\n                    \n                    <h3>Pre-Installation Inspection \u5b89\u88c5\u524d\u68c0\u67e5<\/h3>\n                    <p>Before deploying Type 440 11kV cable from the drum, conduct a thorough inspection to ensure cable integrity has been maintained during transport:<\/p>\n                    <p class=\"cn-text\">\u5728\u4ece\u5377\u7b52\u4e0a\u90e8\u7f72Type 440 11kV\u7535\u7f06\u4e4b\u524d\uff0c\u8fdb\u884c\u5f7b\u5e95\u68c0\u67e5\u4ee5\u786e\u4fdd\u5728\u8fd0\u8f93\u8fc7\u7a0b\u4e2d\u4fdd\u6301\u4e86\u7535\u7f06\u5b8c\u6574\u6027\uff1a<\/p>\n\n                    <div class=\"spec-box\" style=\"background: none; border: none; padding: 0;\">\n                        <ol style=\"margin-left: 24px; line-height: 2;\">\n                            <li><strong>Visual Inspection \u76ee\u89c6\u68c0\u67e5:<\/strong> Check for outer sheath damage, kinking, or compression marks that might indicate excessive bending or impact during transport. \u68c0\u67e5\u5916\u62a4\u5957\u635f\u574f\u3001\u626d\u7ed3\u6216\u538b\u75d5\uff0c\u8fd9\u53ef\u80fd\u8868\u660e\u5728\u8fd0\u8f93\u8fc7\u7a0b\u4e2d\u8fc7\u5ea6\u5f2f\u66f2\u6216\u649e\u51fb\u3002<\/li>\n                            <li><strong>Drum Condition \u5377\u7b52\u72b6\u6001:<\/strong> Verify drum has not been damaged and cable has not unwound or become loose during transport. \u9a8c\u8bc1\u5377\u7b52\u5728\u8fd0\u8f93\u8fc7\u7a0b\u4e2d\u672a\u635f\u574f\uff0c\u7535\u7f06\u672a\u5c55\u5f00\u6216\u677e\u52a8\u3002<\/li>\n                            <li><strong>Cable End Sealing \u7535\u7f06\u7aef\u90e8\u5bc6\u5c01:<\/strong> Ensure protective end caps or sealing compounds are intact to prevent moisture ingress. \u786e\u4fdd\u4fdd\u62a4\u7aef\u5e3d\u6216\u5bc6\u5c01\u5316\u5408\u7269\u5b8c\u597d\u65e0\u635f\uff0c\u4ee5\u9632\u6b62\u6e7f\u6c14\u8fdb\u5165\u3002<\/li>\n                            <li><strong>Documentation Review \u6587\u4ef6\u5ba1\u67e5:<\/strong> Verify manufacturer&#8217;s test certificates, Declaration of Performance, and relevant compliance documentation are present. \u9a8c\u8bc1\u5236\u9020\u5546\u7684\u6d4b\u8bd5\u8bc1\u4e66\u3001\u6027\u80fd\u58f0\u660e\u548c\u76f8\u5173\u5408\u89c4\u6587\u4ef6\u662f\u5426\u5b58\u5728\u3002<\/li>\n                        <\/ol>\n                    <\/div>\n\n                    <h3>Drum Storage Recommendations \u5377\u7b52\u5b58\u50a8\u5efa\u8bae<\/h3>\n                    <div class=\"alert alert-info\">\n                        <strong>Environmental Storage Conditions \u73af\u5883\u5b58\u50a8\u6761\u4ef6<\/strong>\n                        Type 440 cables can be stored outdoors due to their UV-resistant and weather-resistant HD-PCP sheath, but optimal storage conditions include:\n                        <span class=\"cn-text\">\u7531\u4e8eType 440\u7535\u7f06\u5177\u6709\u9632\u7d2b\u5916\u7ebf\u548c\u8010\u5019\u7684HD-PCP\u62a4\u5957\uff0c\u53ef\u4ee5\u5728\u6237\u5916\u50a8\u5b58\uff0c\u4f46\u6700\u4f73\u50a8\u5b58\u6761\u4ef6\u5305\u62ec\uff1a<\/span>\n                        <ul style=\"margin-top: 12px; margin-left: 24px;\">\n                            <li>Temperature range: -25\u00b0C to +50\u00b0C \u6e29\u5ea6\u8303\u56f4\uff1a-25\u00b0C\u81f3+50\u00b0C<\/li>\n                            <li>Protected from direct sunlight when possible \u5c3d\u53ef\u80fd\u907f\u514d\u9633\u5149\u76f4\u5c04<\/li>\n                            <li>Elevated storage to prevent water accumulation \u9ad8\u67b6\u50a8\u5b58\u4ee5\u9632\u6b62\u79ef\u6c34<\/li>\n                            <li>Drums should be stored vertically on their flanges \u5377\u7b52\u5e94\u5728\u6cd5\u5170\u4e0a\u5782\u76f4\u5b58\u50a8<\/li>\n                            <li>Regular rotation if stored >6 months to prevent flat spots \u5982\u679c\u50a8\u5b58\u8d85\u8fc76\u4e2a\u6708\uff0c\u5b9a\u671f\u65cb\u8f6c\u4ee5\u9632\u6b62\u6241\u5e73\u70b9<\/li>\n                        <\/ul>\n                    <\/div>\n\n                    <h3>Deployment Best Practices \u90e8\u7f72\u6700\u4f73\u5b9e\u8df5<\/h3>\n                    <p>When deploying cable from the drum during installation, maintain proper bend radius throughout the entire process:<\/p>\n                    <p class=\"cn-text\">\u5728\u5b89\u88c5\u8fc7\u7a0b\u4e2d\u4ece\u5377\u7b52\u4e0a\u90e8\u7f72\u7535\u7f06\u65f6\uff0c\u5728\u6574\u4e2a\u8fc7\u7a0b\u4e2d\u4fdd\u6301\u9002\u5f53\u7684\u5f2f\u66f2\u534a\u5f84\uff1a<\/p>\n\n                    <div class=\"table-container\">\n                        <table>\n                            <thead>\n                                <tr>\n                                    <th>Installation Phase \u5b89\u88c5\u9636\u6bb5<\/th>\n                                    <th>Minimum Bend Radius \u6700\u5c0f\u5f2f\u66f2\u534a\u5f84<\/th>\n                                    <th>Additional Requirements \u9644\u52a0\u8981\u6c42<\/th>\n                                <\/tr>\n                            <\/thead>\n                            <tbody>\n                                <tr>\n                                    <td>Drum unreeling<br><span class=\"cn-text\">\u5377\u7b52\u653e\u7ebf<\/span><\/td>\n                                    <td>12\u00d7 cable OD<\/td>\n                                    <td>Use turntable or axle stand, never pull over flange<br><span class=\"cn-text\">\u4f7f\u7528\u8f6c\u53f0\u6216\u8f74\u67b6\uff0c\u5207\u52ff\u62c9\u8fc7\u6cd5\u5170<\/span><\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Cable pulling through conduit<br><span class=\"cn-text\">\u7535\u7f06\u901a\u8fc7\u7ba1\u9053\u62c9\u4f38<\/span><\/td>\n                                    <td>12\u00d7 cable OD<\/td>\n                                    <td>Use roller supports, limit pulling tension to 50N\/mm\u00b2<br><span class=\"cn-text\">\u4f7f\u7528\u6eda\u7b52\u652f\u67b6\uff0c\u9650\u5236\u62c9\u529b\u81f350N\/mm\u00b2<\/span><\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Cable tray installation<br><span class=\"cn-text\">\u7535\u7f06\u6865\u67b6\u5b89\u88c5<\/span><\/td>\n                                    <td>7\u00d7 cable OD<\/td>\n                                    <td>Secure at 1.5m intervals, use proper supports<br><span class=\"cn-text\">\u4ee51.5\u7c73\u95f4\u9694\u56fa\u5b9a\uff0c\u4f7f\u7528\u9002\u5f53\u7684\u652f\u67b6<\/span><\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Final positioning (static)<br><span class=\"cn-text\">\u6700\u7ec8\u5b9a\u4f4d\uff08\u9759\u6001\uff09<\/span><\/td>\n                                    <td>7\u00d7 cable OD<\/td>\n                                    <td>Allow for thermal expansion, maintain clearances<br><span class=\"cn-text\">\u5141\u8bb8\u70ed\u81a8\u80c0\uff0c\u4fdd\u6301\u95f4\u9699<\/span><\/td>\n                                <\/tr>\n                            <\/tbody>\n                        <\/table>\n                    <\/div>\n\n                    <div class=\"citation\">\n                        Source: IEEE 576-2000 Recommended Practice for Installation\n                        <a href=\"https:\/\/www.elandcables.com\/the-cable-lab\/faqs\/faq-how-is-the-minimum-bending-radius-determined-for-cables\" rel=\"nofollow noopener\" target=\"_blank\">Eland Cables: Determining Minimum Bending Radius<\/a>\n                    <\/div>\n                <\/section>\n\n                <section>\n                    <h2>Quality Assurance and Testing \u8d28\u91cf\u4fdd\u8bc1\u548c\u6d4b\u8bd5<\/h2>\n                    \n                    <h3>Post-Installation Testing Requirements \u5b89\u88c5\u540e\u6d4b\u8bd5\u8981\u6c42<\/h3>\n                    <p>After installation, Type 440 11kV cables should undergo comprehensive testing to verify integrity and performance. AS\/NZS 2802 and IEC 60502-2 specify the following tests:<\/p>\n                    <p class=\"cn-text\">\u5b89\u88c5\u540e\uff0cType 440 11kV\u7535\u7f06\u5e94\u8fdb\u884c\u5168\u9762\u6d4b\u8bd5\u4ee5\u9a8c\u8bc1\u5b8c\u6574\u6027\u548c\u6027\u80fd\u3002AS\/NZS 2802\u548cIEC 60502-2\u89c4\u5b9a\u4ee5\u4e0b\u6d4b\u8bd5\uff1a<\/p>\n\n                    <div class=\"table-container\">\n                        <table>\n                            <thead>\n                                <tr>\n                                    <th>Test Type \u6d4b\u8bd5\u7c7b\u578b<\/th>\n                                    <th>Test Parameters \u6d4b\u8bd5\u53c2\u6570<\/th>\n                                    <th>Acceptance Criteria \u9a8c\u6536\u6807\u51c6<\/th>\n                                <\/tr>\n                            <\/thead>\n                            <tbody>\n                                <tr>\n                                    <td>High Voltage AC Test<br><span class=\"cn-text\">\u9ad8\u538b\u4ea4\u6d41\u8bd5\u9a8c<\/span><\/td>\n                                    <td>30 kV for 5 minutes (11kV cable)<\/td>\n                                    <td>No breakdown or flashover<br><span class=\"cn-text\">\u65e0\u51fb\u7a7f\u6216\u95ea\u7edc<\/span><\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>VLF (0.1 Hz) Test<br><span class=\"cn-text\">\u8d85\u4f4e\u9891\u8bd5\u9a8c<\/span><\/td>\n                                    <td>After installation verification<\/td>\n                                    <td>Tan delta \u2264 specified limits<br><span class=\"cn-text\">\u6b63\u5207\u89d2\u635f\u8017\u2264\u89c4\u5b9a\u9650\u503c<\/span><\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Partial Discharge Test<br><span class=\"cn-text\">\u5c40\u90e8\u653e\u7535\u8bd5\u9a8c<\/span><\/td>\n                                    <td>At 1.73\u00d7 U\u2080 for accessories<\/td>\n                                    <td>PD magnitude \u2264 5 pC<br><span class=\"cn-text\">\u5c40\u653e\u91cf\u22645 pC<\/span><\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Insulation Resistance<br><span class=\"cn-text\">\u7edd\u7f18\u7535\u963b<\/span><\/td>\n                                    <td>1000V DC megger test<\/td>\n                                    <td>> 100 M\u03a9\u00b7km at 20\u00b0C<br><span class=\"cn-text\">\u572820\u00b0C\u65f6>100 M\u03a9\u00b7km<\/span><\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>Conductor Resistance<br><span class=\"cn-text\">\u5bfc\u4f53\u7535\u963b<\/span><\/td>\n                                    <td>DC resistance measurement<\/td>\n                                    <td>Within \u00b15% of specified value<br><span class=\"cn-text\">\u5728\u89c4\u5b9a\u503c\u7684\u00b15%\u4ee5\u5185<\/span><\/td>\n                                <\/tr>\n                            <\/tbody>\n                        <\/table>\n                    <\/div>\n\n                    <div class=\"citation\">\n                        Source: AS\/NZS 2802:2000 Section 26, IEC 60502-2:2014 Testing Requirements\n                        <a href=\"https:\/\/www.inmr.com\/overview-of-cable-testing-state-of-the-art-standards-technologies\/\" rel=\"nofollow noopener\" target=\"_blank\">INMR: Overview of Cable Testing Standards and Technologies<\/a>\n                    <\/div>\n\n                    <h3>Maintenance and Inspection Schedule \u7ef4\u62a4\u548c\u68c0\u67e5\u8ba1\u5212<\/h3>\n                    <p>For mining trailing cables in continuous operation, establish a regular inspection and maintenance schedule:<\/p>\n                    <p class=\"cn-text\">\u5bf9\u4e8e\u8fde\u7eed\u8fd0\u884c\u7684\u77ff\u7528\u62d6\u7f06\uff0c\u5efa\u7acb\u5b9a\u671f\u68c0\u67e5\u548c\u7ef4\u62a4\u8ba1\u5212\uff1a<\/p>\n\n                    <ul style=\"margin-left: 24px; line-height: 2;\">\n                        <li><strong>Daily:<\/strong> Visual inspection of cable condition at connection points and high-flex areas \u6bcf\u65e5\uff1a\u5728\u8fde\u63a5\u70b9\u548c\u9ad8\u5f2f\u66f2\u533a\u57df\u5bf9\u7535\u7f06\u72b6\u51b5\u8fdb\u884c\u76ee\u89c6\u68c0\u67e5<\/li>\n                        <li><strong>Weekly:<\/strong> Check for sheath damage, conductor heating, and connection tightness \u6bcf\u5468\uff1a\u68c0\u67e5\u62a4\u5957\u635f\u574f\u3001\u5bfc\u4f53\u53d1\u70ed\u548c\u8fde\u63a5\u7d27\u56fa\u5ea6<\/li>\n                        <li><strong>Monthly:<\/strong> Megger test of insulation resistance, thermal imaging of connections \u6bcf\u6708\uff1a\u7edd\u7f18\u7535\u963b\u7684\u5146\u6b27\u8868\u6d4b\u8bd5\uff0c\u8fde\u63a5\u7684\u70ed\u6210\u50cf<\/li>\n                        <li><strong>Quarterly:<\/strong> Comprehensive inspection including partial discharge testing if available \u6bcf\u5b63\u5ea6\uff1a\u5168\u9762\u68c0\u67e5\uff0c\u5305\u62ec\u5c40\u90e8\u653e\u7535\u6d4b\u8bd5\uff08\u5982\u679c\u53ef\u7528\uff09<\/li>\n                        <li><strong>Annually:<\/strong> Full electrical testing including VLF tan delta and insulation resistance \u6bcf\u5e74\uff1a\u5305\u62ec\u8d85\u4f4e\u9891\u6b63\u5207\u89d2\u635f\u8017\u548c\u7edd\u7f18\u7535\u963b\u5728\u5185\u7684\u5168\u9762\u7535\u6c14\u6d4b\u8bd5<\/li>\n                    <\/ul>\n                <\/section>\n            <\/article>\n\n            <div class=\"contact-section\">\n                <h2 style=\"margin-top: 0; border-bottom: none;\">Contact Anhui Feichun Special Cable Co., Ltd \u8054\u7cfb\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8<\/h2>\n                <p>For technical specifications, custom cable solutions, and ordering information for Type 440 mining cables and other specialized cable products, please contact our technical team:<\/p>\n                <p class=\"cn-text\">\u6709\u5173Type 440\u77ff\u7528\u7535\u7f06\u548c\u5176\u4ed6\u4e13\u7528\u7535\u7f06\u4ea7\u54c1\u7684\u6280\u672f\u89c4\u683c\u3001\u5b9a\u5236\u7535\u7f06\u89e3\u51b3\u65b9\u6848\u548c\u8ba2\u8d2d\u4fe1\u606f\uff0c\u8bf7\u8054\u7cfb\u6211\u4eec\u7684\u6280\u672f\u56e2\u961f\uff1a<\/p>\n                \n                <div class=\"contact-grid\">\n                    <div class=\"contact-item\">\n                        <div class=\"contact-label\">WhatsApp<\/div>\n                        <div class=\"contact-value\"><a href=\"https:\/\/wa.me\/8613855123218\" rel=\"nofollow noopener\" target=\"_blank\">+86 138 5512 3218<\/a><\/div>\n                    <\/div>\n                    <div class=\"contact-item\">\n                        <div class=\"contact-label\">Technical Support Email \u6280\u672f\u652f\u6301\u90ae\u7bb1<\/div>\n                        <div class=\"contact-value\"><a href=\"mailto:tech@feichuncables.com\" rel=\"nofollow\">tech@feichuncables.com<\/a><\/div>\n                    <\/div>\n                    <div class=\"contact-item\">\n                        <div class=\"contact-label\">Engineering Inquiries \u5de5\u7a0b\u54a8\u8be2<\/div>\n                        <div class=\"contact-value\"><a href=\"mailto:zihao.yang@feichuncables.com\" rel=\"nofollow\">zihao.yang@feichuncables.com<\/a><\/div>\n                    <\/div>\n                    <div class=\"contact-item\">\n                        <div class=\"contact-label\">Sales Department \u9500\u552e\u90e8\u95e8<\/div>\n                        <div class=\"contact-value\"><a href=\"mailto:ziyu.huang@feichuncables.com\" rel=\"nofollow\">ziyu.huang@feichuncables.com<\/a><\/div>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/main>\n\n    <footer>\n        <div class=\"container\">\n            <p>&copy; 2026 Anhui Feichun Special Cable Co., Ltd (\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8). All rights reserved.<\/p>\n            <p style=\"margin-top: 8px; font-size: 0.85rem;\">This technical guide is provided for informational purposes. All specifications should be verified with manufacturer datasheets and relevant standards for specific applications.<\/p>\n            <p style=\"margin-top: 8px; font-size: 0.85rem;\" class=\"cn-text\">\u672c\u6280\u672f\u6307\u5357\u4ec5\u4f9b\u53c2\u8003\u3002\u6240\u6709\u89c4\u683c\u5e94\u901a\u8fc7\u5236\u9020\u5546\u6570\u636e\u8868\u548c\u76f8\u5173\u6807\u51c6\u8fdb\u884c\u9a8c\u8bc1\uff0c\u4ee5\u9002\u7528\u4e8e\u7279\u5b9a\u5e94\u7528\u3002<\/p>\n        <\/div>\n    <\/footer>\n<\/body>\n<\/html>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"For a 500-meter length of Type 440 11kV mining cable, the required shipping drum dimensions are fundamentally determined by the cable&#8217;s minimum bend radius and physical dimensions. Based on industry standards from AS\/NZS 2802:2000 and IEC 60502-2, proper drum sizing ensures cable integrity during transportation and prevents damage to the cable&#8217;s internal structure, particularly the semiconductive screens and EPR insulation critical for medium voltage applications.\n\u5bf9\u4e8e500\u7c73\u957f\u7684Type 440 11kV\u77ff\u7528\u7535\u7f06\uff0c\u6240\u9700\u7684\u8fd0\u8f93\u5377\u7b52\u5c3a\u5bf8\u4e3b\u8981\u7531\u7535\u7f06\u7684\u6700\u5c0f\u5f2f\u66f2\u534a\u5f84\u548c\u7269\u7406\u5c3a\u5bf8\u51b3\u5b9a\u3002\u6839\u636eAS\/NZS 2802:2000\u548cIEC 60502-2\u7684\u884c\u4e1a\u6807\u51c6\uff0c\u6b63\u786e\u7684\u5377\u7b52\u5c3a\u5bf8\u53ef\u786e\u4fdd\u8fd0\u8f93\u8fc7\u7a0b\u4e2d\u7684\u7535\u7f06\u5b8c\u6574\u6027\uff0c\u5e76\u9632\u6b62\u635f\u574f\u7535\u7f06\u7684\u5185\u90e8\u7ed3\u6784\uff0c\u7279\u522b\u662f\u5bf9\u4e2d\u538b\u5e94\u7528\u81f3\u5173\u91cd\u8981\u7684\u534a\u5bfc\u4f53\u5c4f\u853d\u5c42\u548cEPR\u7edd\u7f18\u5c42\u3002","protected":false},"author":1,"featured_media":5249,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"left","csco_page_header_type":"title","csco_page_load_nextpost":"","footnotes":""},"categories":[66,35,464,9563,1,56,10561,9679],"tags":[1674,35570,35564,35591,35542,35582,35572,35571,35573,35574,3814,3707,35585,35592,35537,3703,3815,35560,35588,35559,2297,6518,35561,4301,35593,1882,1152,16,1079,1688,35562,3320,1499,171,1103,152,107,35579,176,35549,35589,7332,1235,35586,35565,35218,35569,2068,111,35581,3449,3964,5718,35584,139,4366,214,204,3716,1683,4162,4686,17,801,35587,1075,1908,35577,35536,35535,35545,35543,35547,35546,3770,35548,35590,35539,35541,35580,35540,35544,35563,4250,34304,35583,35538,35243,35576,35578],"class_list":["post-5248","post","type-post","status-publish","format-standard","has-post-thumbnail","category-common-problems-encountered-in-cable-applications","category-festoon-cable","category-flexible-cables-with-high-bending-life-and-fatigue-resistance","category-medium-voltage-cable","category-uncategorized","category-reeling-cable","category-wind-turbine-cable","category-xlpe-cable","tag-11kv-mining-cable","tag-1-1kv-type-440-cable","tag-11kv-cable-ampacity","tag-11kv-cable-installation-manual","tag-11kv-cable-specifications","tag-11kv-cable-transportation-requirements","tag-11kv-type-440-cable","tag-22kv-type-441-cable","tag-3-3kv-type-440-cable","tag-6-6kv-type-440-cable","tag-as-nzs-1125-cable","tag-as-nzs-2802-cable","tag-as-nzs-2802-cable-dimensions","tag-as-nzs-2802-requirements","tag-as-nzs-2802-type-440","tag-as-nzs-28022000","tag-as-nzs-3808-cable","tag-cable-drum-capacity-formula","tag-cable-drum-marking-requirements","tag-cable-flange-diameter","tag-cable-pulling-tension-limits","tag-cable-test-certificates","tag-cable-weight-per-meter-calculation","tag-class-1-vs-class-2-mining-cable","tag-coal-surface-mining-cable","tag-conveyor-system-cable","tag-copper-mining-cable","tag-din-vde-0250","tag-dragline-cable","tag-drilling-rig-cable","tag-drum-flange-diameter-calculation","tag-epr-insulated-mining-cable","tag-excavator-power-cable","tag-explosion-proof-mining-cable","tag-gold-mining-cable","tag-heavy-duty-mining-cable","tag-heavy-duty-e-loader-mining-cable","tag-how-to-calculate-cable-drum-size","tag-icea-s-75-381-2","tag-iec-60502-cable-standard","tag-iec-60502-compliance","tag-iec-60502-2-medium-voltage","tag-iron-ore-mining-cable","tag-medium-voltage-cable-drum-specifications","tag-medium-voltage-cable-sizing","tag-medium-voltage-cable-standards","tag-medium-voltage-mining-cable-6-11kv","tag-mineral-processing-cable","tag-mining-cable","tag-mining-cable-bend-radius-requirements","tag-mining-cable-specification-sheet","tag-mining-cable-standards-australia","tag-mining-cable-types-comparison","tag-mining-cable-weight-calculation","tag-mining-cables","tag-mining-equipment-power-cable","tag-mining-power-cable","tag-mining-trailing-cable","tag-mobile-crusher-cable","tag-mobile-mining-equipment-cable","tag-open-cut-mining-cable-2","tag-quarry-equipment-cable","tag-reeling-cable","tag-reeling-drum-cable","tag-shipping-drum-dimensions-for-power-cable","tag-shovel-cable","tag-surface-mining-cable","tag-type-240-vs-type-440","tag-type-440-11-11kv-cable","tag-type-440-11kv-cable","tag-type-440-35mm","tag-type-440-50mm","tag-type-440-70mm","tag-type-440-95mm","tag-type-440-cable","tag-type-440-cable-construction","tag-type-440-cable-datasheet","tag-type-440-cable-diameter","tag-type-440-cable-dimensions","tag-type-440-cable-installation-guide","tag-type-440-cable-weight","tag-type-440-conductor-size","tag-type-440-current-rating","tag-type-440-mining-cable","tag-type-440-reeling-cable","tag-type-440-technical-datasheet","tag-type-440-trailing-cable","tag-type-440-vs-type-441","tag-type-440-vs-type-450","tag-what-size-drum-for-11kv-cable","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/5248","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=5248"}],"version-history":[{"count":1,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/5248\/revisions"}],"predecessor-version":[{"id":5250,"href":"https:\/\/fei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