{"id":8731,"date":"2026-03-09T15:58:24","date_gmt":"2026-03-09T07:58:24","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=8731"},"modified":"2026-03-09T15:58:29","modified_gmt":"2026-03-09T07:58:29","slug":"type-241-6-6-6-6kv-3x70mm%c2%b2-individually-screened-cores-for-lihir-porgera-png-mining","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/type-241-6-6-6-6kv-3x70mm%c2%b2-individually-screened-cores-for-lihir-porgera-png-mining\/","title":{"rendered":"Type 241 6.6\/6.6kV 3x70mm\u00b2 Individually Screened Cores for Lihir Porgera PNG Mining"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Advanced Engineering Design: AS\/NZS 1802 Type 241 6.6\/6.6kV 3x70mm\u00b2 Trailing Cables with Individually Screened Power Conductors and Moisture-Resistant Sheath for Papua New Guinea Extreme-Humidity Mining (Lihir Gold, Porgera Copper-Gold). Water-Treeing Prevention, High-Resistance Grounded System Integration, Single-Phase Earth-Fault Detection Architecture, Tropical Rainforest 100% Humidity Barrier, Dragline-Shovel Mobile Substation Power, Tinned Copper Corrosion Resistance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u8fdb\u5de5\u7a0b\u8bbe\u8ba1\uff1aAS\/NZS 1802 Type 241 6.6\/6.6kV 3x70mm\u00b2\u62d6\u66f3\u7535\u7f06\uff0c\u914d\u5907\u5355\u72ec\u5c4f\u853d\u7535\u529b\u7ebf\u82af\u548c\u8010\u6f6e\u5916\u62a4\u5957\uff0c\u7528\u4e8e\u5df4\u5e03\u4e9a\u65b0\u51e0\u5185\u4e9a\u6781\u7aef\u9ad8\u6e7f\u5ea6\u77ff\u4e1a(Lihir\u91d1\u77ff\u3001Porgera\u94dc\u91d1\u77ff)\u3002\u6c34\u6811\u679d\u8001\u5316\u9632\u62a4\u3001\u9ad8\u963b\u63a5\u5730\u7cfb\u7edf\u96c6\u6210\u3001\u5355\u76f8\u63a5\u5730\u6545\u969c\u68c0\u6d4b\u67b6\u6784\u3001\u70ed\u5e26\u96e8\u6797100%\u6e7f\u5ea6\u5c4f\u969c\u3001\u6316\u6398\u673a-\u94f2\u8f66\u79fb\u52a8\u53d8\u7535\u7ad9\u7535\u6e90\u3001\u9540\u9521\u94dc\u9632\u8150\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"617475\" data-has-transparency=\"false\" style=\"--dominant-color: #617475;\" loading=\"lazy\" decoding=\"async\" width=\"1067\" height=\"628\" sizes=\"auto, (max-width: 1067px) 100vw, 1067px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1003-1067x628.avif\" alt=\"\" class=\"wp-image-8732 not-transparent\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1003-1067x628.avif 1067w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1003-300x177.avif 300w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1003-768x452.avif 768w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1003-400x235.avif 400w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1003-800x471.avif 800w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1003-832x490.avif 832w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1003.avif 1111w\" \/><\/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>Type 241 6.6\/6.6kV 3x70mm\u00b2 Individually Screened Cores for Lihir Porgera: PNG High-Humidity Mining | Feichun Cable<\/title>\n<meta name=\"description\" content=\"Comprehensive deep-dive: AS\/NZS 1802 Type 241 6.6\/6.6kV 3x70mm\u00b2 trailing cables with individually screened cores and moisture-resistant sheath for Papua New Guinea (Lihir, Porgera) extreme-humidity underground mining. Water-treeing suppression, high-resistance grounded systems, single-phase earth-fault detection, tropical rainforest moisture penetration barrier, tinned copper corrosion resistance, dragline mobile shovel electrification.\">\n<meta name=\"keywords\" content=\"Type 241 cable, AS\/NZS 1802 Type 241, AS\/NZS 2802 Type 241, 6.6\/6.6kV mining cable, Papua New Guinea mining, moisture resistant cable, tropicalized cable, 3x70mm2 trailing cable, Lihir gold mine cable, Porgera mine electrification, individually screened cores, central pilot cable, earth continuity monitoring, heavy duty CPE sheath, tinned copper flexible cable, water blocking mining cable, hydrolysis resistant EPR, high resistance grounded system, phase-to-earth voltage, IT system cable, dragline cable, shovel excavator power, underground mining cable, surface mining trailing cable, mechanical stress cable, flame retardant mining cable, oil resistant trailing cable, minimum bending radius cable, cable ampacity derating, electrical BOM specification, mining machinery electrification, international cable standard, cable RFQ, high humidity mine cable, abrasion resistant cable jacket, Z-kinking prevention, short circuit current cable, VDE 0250 equivalent, OEM cable manufacturing, industrial cable procurement, electrical engineer BOM, mining equipment BOM, Cu-weight kg\/km, cable ampacity chart, AWG cross section, outer diameter cable, dynamic tensile load, heavy duty reeling, dynamic flexing cable, tropical rainforest mining, seasonal monsoon cable deployment, copper mine PNG, gold mine electrification\">\n<meta name=\"author\" content=\"Anhui Feichun Special Cable Co., Ltd.\">\n<link rel=\"canonical\" href=\"https:\/\/feichuncables.com\/blog\/png-type241-individually-screened-lihir-porgera\/\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n<link 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var(--b-rule);border-radius:4px;padding:1.5rem;margin-top:2.5rem}.contact h3{font-size:.98rem;margin-bottom:.7rem;color:var(--c-body)}.cg{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:.75rem}.ci{font-size:.83rem;color:var(--c-secondary);line-height:1.45;word-wrap:break-word;overflow-wrap:break-word}.ci .lb{font-weight:600;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--c-tertiary);display:block;margin-bottom:.1rem}.ci a{color:var(--c-link);text-decoration:none}.ci a:hover{text-decoration:underline}.ft{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--b-light);font-size:.75rem;color:var(--c-tertiary);text-align:center;line-height:1.55;word-wrap:break-word;overflow-wrap:break-word}@media(max-width:600px){.page-wrap{padding:1.2rem 1rem 3rem}.hdr h1{font-size:1.35rem}.tw{font-size:.8rem;width:100%;overflow-x:auto}.cg{grid-template-columns:1fr}}<\/style>\n<\/head>\n\n<body>\n<article class=\"page-wrap\" itemscope itemtype=\"https:\/\/schema.org\/TechArticle\">\n\n  <header class=\"hdr\">\n    <span class=\"badge\">Feichun Special Cable \u2014 Technical Blog<\/span>\n    <h1 itemprop=\"headline\">Type 241 6.6\/6.6kV 3x70mm\u00b2 Individually Screened Cores for Lihir Porgera PNG Mining<\/h1>\n    <p class=\"sub\">Advanced Engineering Design: AS\/NZS 1802 Type 241 6.6\/6.6kV 3x70mm\u00b2 Trailing Cables with Individually Screened Power Conductors and Moisture-Resistant Sheath for Papua New Guinea Extreme-Humidity Mining (Lihir Gold, Porgera Copper-Gold). Water-Treeing Prevention, High-Resistance Grounded System Integration, Single-Phase Earth-Fault Detection Architecture, Tropical Rainforest 100% Humidity Barrier, Dragline-Shovel Mobile Substation Power, Tinned Copper Corrosion Resistance.<\/p>\n    <p class=\"sub-cn\">\u5148\u8fdb\u5de5\u7a0b\u8bbe\u8ba1\uff1aAS\/NZS 1802 Type 241 6.6\/6.6kV 3x70mm\u00b2\u62d6\u66f3\u7535\u7f06\uff0c\u914d\u5907\u5355\u72ec\u5c4f\u853d\u7535\u529b\u7ebf\u82af\u548c\u8010\u6f6e\u5916\u62a4\u5957\uff0c\u7528\u4e8e\u5df4\u5e03\u4e9a\u65b0\u51e0\u5185\u4e9a\u6781\u7aef\u9ad8\u6e7f\u5ea6\u77ff\u4e1a(Lihir\u91d1\u77ff\u3001Porgera\u94dc\u91d1\u77ff)\u3002\u6c34\u6811\u679d\u8001\u5316\u9632\u62a4\u3001\u9ad8\u963b\u63a5\u5730\u7cfb\u7edf\u96c6\u6210\u3001\u5355\u76f8\u63a5\u5730\u6545\u969c\u68c0\u6d4b\u67b6\u6784\u3001\u70ed\u5e26\u96e8\u6797100%\u6e7f\u5ea6\u5c4f\u969c\u3001\u6316\u6398\u673a-\u94f2\u8f66\u79fb\u52a8\u53d8\u7535\u7ad9\u7535\u6e90\u3001\u9540\u9521\u94dc\u9632\u8150\u3002<\/p>\n    <div class=\"meta\">\n      <span itemprop=\"author\" itemscope itemtype=\"https:\/\/schema.org\/Organization\"><span itemprop=\"name\">Anhui Feichun Special Cable Co., Ltd.<\/span><\/span>\n      <span>|<\/span>\n      <time itemprop=\"datePublished\" datetime=\"2026-03-09\">Mar 09, 2026<\/time>\n      <span>|<\/span>\n      <span>Reading time: ~55 min<\/span>\n    <\/div>\n  <\/header>\n\n  <nav class=\"toc\">\n    <div class=\"toc-label\">Contents<\/div>\n    <ol>\n      <li><a href=\"#s1\">Lihir &#038; Porgera Extreme Environment: 100% Humidity Rainforest Challenges<\/a><\/li>\n      <li><a href=\"#s2\">Water-Treeing at 6.6kV: Electrochemical Degradation in Perpetual Moisture<\/a><\/li>\n      <li><a href=\"#s3\">Individually Screened Cores: Single-Phase Fault Detection Architecture<\/a><\/li>\n      <li><a href=\"#s4\">High-Resistance Grounded (IT) Systems: Earth-Fault Continuity Monitoring<\/a><\/li>\n      <li><a href=\"#s5\">Moisture-Resistant Outer Sheath: Advanced CPE Tropical Formulation<\/a><\/li>\n      <li><a href=\"#s6\">6.6\/6.6kV Full Symmetric Insulation: Maximum Phase-to-Earth Redundancy<\/a><\/li>\n      <li><a href=\"#s7\">Complete BOM Specification: Type 241 6.6\/6.6kV 3x70mm\u00b2 Engineering Data<\/a><\/li>\n      <li><a href=\"#s8\">Ampacity &#038; Derating: Underground PNG Field Performance<\/a><\/li>\n      <li><a href=\"#s9\">Individually Screened Core Protection: Shielding Against Z-Kinking<\/a><\/li>\n      <li><a href=\"#s10\">Dragline-Shovel Power Systems: Dynamic Stress and Cable Reeling<\/a><\/li>\n      <li><a href=\"#s11\">Tinned Copper: Corrosion Suppression in Tropical-Coastal Zones<\/a><\/li>\n      <li><a href=\"#s12\">Seasonal Monsoon Deployment: Cable Rating Under Extreme Precipitation<\/a><\/li>\n      <li><a href=\"#s13\">Field Installation, Termination, and Maintenance Protocol<\/a><\/li>\n      <li><a href=\"#s14\">Conclusion: Premium Type 241 For Lihir-Porgera Harsh Electrification<\/a><\/li>\n    <\/ol>\n  <\/nav>\n\n  <div class=\"body\" itemprop=\"articleBody\">\n\n    <h2 id=\"s1\">1. Lihir &#038; Porgera Extreme Environment: 100% Humidity Rainforest Challenges<\/h2>\n\n    <p><strong>Geography &#038; Climate Extremes:<\/strong> Lihir Island (Newcrest Mining) sits in the Bismarck Sea off PNG coast. Porgera (Barrick Gold \/ Sumitomo) operates in PNG&#8217;s central highlands. Both share identical climatic curse: (1) Annual rainfall 3,000\u20135,000 mm (Lihir) to 10,000+ mm (Porgera), (2) Year-round relative humidity 95\u2013100%, (3) Perpetual ground saturation and standing water in pits and underground, (4) Tropical air temperature 25\u201340\u00b0C year-round (no winter relief), (5) Seasonal monsoons (Nov\u2013May) with downpours exceeding 500 mm\/day.<\/p>\n\n    <p class=\"cn\">Lihir\u5c9b(\u7ebd\u514b\u745e\u65af\u7279\u77ff\u4e1a)\u4f4d\u4e8ePNG\u5916\u6d77\u7684\u4ffe\u65af\u9ea6\u6d77\u3002Porgera(\u5df4\u91cc\u514b\u9ec4\u91d1\/\u4f4f\u53cb)\u8fd0\u8425\u4e8ePNG\u4e2d\u90e8\u9ad8\u5730\u3002\u4e24\u8005\u5171\u540c\u9762\u4e34\u76f8\u540c\u7684\u6c14\u5019\u8bc5\u5492\uff1a(1)\u5e74\u964d\u6c34\u91cf3,000-5,000 mm(Lihir)\u81f310,000+ mm(Porgera)\uff0c(2)\u5168\u5e74\u76f8\u5bf9\u6e7f\u5ea695-100%\uff0c(3)\u6c38\u4e45\u5730\u9762\u9971\u548c\u548c\u5751\u9053\u53ca\u5730\u4e0b\u79ef\u6c34\uff0c(4)\u70ed\u5e26\u7a7a\u6c14\u6e29\u5ea6\u5168\u5e7425-40\u00b0C(\u65e0\u51ac\u5b63\u7f13\u89e3)\uff0c(5)\u5b63\u98ce\u5b63\u8282(11\u6708-5\u6708)\uff0c\u964d\u96e8\u91cf\/\u5929>500 mm\u3002<\/p>\n\n    <p><strong>Cable Lifetime Expectation:<\/strong> In these conditions, standard low-voltage cables (0.6\/1.0 kV, 1.5\u20132.0 mm insulation) fail within 4\u20138 months from water-treeing and insulation hydrolysis. Even medium-voltage cables (3.3\/3.3 kV, 2.5\u20133.5 mm insulation) fail within 12\u201318 months. Type 241 6.6\/6.6kV\u2014with 5.0\u20135.5 mm insulation + moisture-resistant sheath\u2014extends service life to 4\u20136 years, a 3\u20136\u00d7 improvement. For a mining operation running 24\/7 dewatering and extraction, this translates to fewer emergency replacements and dramatically lower operational risk.<\/p>\n\n    <h2 id=\"s2\">2. Water-Treeing at 6.6kV: Electrochemical Degradation in Perpetual Moisture<\/h2>\n\n    <p><strong>Lihir-Porgera Moisture Synergy:<\/strong> At 6.6 kV field stress (electric field ~2.2 kV\/mm through 2.5\u20133.0 mm insulation layers), combined with 100% humidity, water molecules are ionized electrochemically. This creates low-conductivity pathways (water trees) that grow exponentially: each month in PNG&#8217;s saturation environment, water trees elongate 2\u20135 mm toward the conductor. Standard 2.5\u20133.5 mm insulation is bridged (complete failure) in 12\u201318 months. Type 241&#8217;s 5.0\u20135.5 mm EPR insulation with hydrophobic additives (wax coatings) suppresses water ionization locally, slowing tree growth to 0.5\u20131.0 mm\/month\u2014extending failure time to 4\u20136 years.<\/p>\n\n    <p><strong>Insulation Hydrolysis Mechanism:<\/strong> Perpetual moisture + 25\u201340\u00b0C tropical heat accelerates hydrolysis: water molecules attack EPR polymer chains, breaking C-C and C-O bonds. This is distinct from water-treeing. Hydrolysis is thermally activated\u2014for every 10\u00b0C increase, reaction rate ~doubles. Type 241 EPR includes hydrolysis inhibitors (antioxidants) and enhanced cross-linking, reducing hydrolysis rate constant by 5\u201310\u00d7 vs standard formulations.<\/p>\n\n    <h2 id=\"s3\">3. Individually Screened Cores: Single-Phase Fault Detection Architecture<\/h2>\n\n    <p><strong>Design Innovation\u2014Independent Shielding:<\/strong> Type 241 6.6\/6.6kV is distinctive in that each 70 mm\u00b2 power conductor is independently wrapped with: (1) 0.5\u20130.8 mm semiconductive elastomer shielding layer, (2) Copper wire \/ nylon braid screen (~0.3 mm equivalent), (3) Secondary semiconductive layer sealing the screen. This three-layer individual shielding per conductor is rarely found in standard mining cables\u2014adding cost (~15\u201320% cable premium) but providing exceptional fault protection in high-impedance grounded systems.<\/p>\n\n    <p><strong>Fault Scenario\u2014Protected vs Unprotected:<\/strong> In a standard cable without individual screening, if a rock impact damages the outer jacket and insulation, multiple phases may short-circuit simultaneously (3-phase fault). This creates violent arc and equipment damage. With Type 241&#8217;s individually screened cores: rock impact damages only the jacket + outer shielding of one conductor. The inner shielding + semiconductive layers prevent immediate short to adjacent phases. The affected phase first develops a single-phase-to-earth (SPFE) fault. The IT system earth-continuity relay detects this and trips the backup earth-leakage breaker within milliseconds, de-energizing the cable safely. No catastrophic multi-phase arc\u2014just controlled single-phase trip.<\/p>\n\n    <p><strong>Earth Continuity Pilot Core Integration:<\/strong> Type 241&#8217;s central 16 mm\u00b2 pilot core connects directly to the IT system&#8217;s continuous monitoring circuit. If any phase conductor&#8217;s outer screen is damaged, pilot core resistance increases or fluctuates. The monitoring system detects this anomaly before a true earth fault develops, allowing preventive cable removal.<\/p>\n\n    <h2 id=\"s4\">4. High-Resistance Grounded (IT) Systems: Earth-Fault Continuity Monitoring<\/h2>\n\n    <p><strong>PNG Mining System Architecture:<\/strong> Most large PNG mines (Lihir, Porgera) use high-resistance earthed (HR or IT) power systems. This means: neutral point is NOT connected to earth (or connected through high impedance ~100\u20131,000 \u03a9). Under normal operation, no circulating earth fault current. But if a phase conductor develops an insulation fault (phase-to-earth leakage), a small earth-fault current flows through the fault point, and the pilot core monitors this. This architecture allows cable operation to continue briefly even during a minor earth fault, while the system logs the fault location and plans corrective action\u2014highly desirable in remote PNG mines where emergency cable replacement is logistically challenging.<\/p>\n\n    <p><strong>Type 241 Adaptation for IT Systems:<\/strong> Type 241&#8217;s independently screened cores enable superior Earth-Continuity Monitoring (ECM) signal integrity in IT systems. Each core&#8217;s screen provides a low-impedance return path for the ECM signal, isolated from adjacent phases. This prevents false alarms from cross-coupling and enables pinpoint fault location via pilot core impedance trending.<\/p>\n\n    <h2 id=\"s5\">5. Moisture-Resistant Outer Sheath: Advanced CPE Tropical Formulation<\/h2>\n\n    <p><strong>Standard CPE vs Type 241 Tropical CPE:<\/strong> Standard mining cable CPE has water vapor transmission rate (WVTR) 50\u201380 g\/m\u00b2\u00b7day under PNG conditions. Type 241 tropical formulation reduces WVTR to 15\u201325 g\/m\u00b2\u00b7day through: (1) Wax-type surface additives forming hydrophobic barrier, (2) Enhanced cross-link density via special curing agents, (3) Advanced plasticizer chemistry (polyester-based, not phthalate), (4) UV\/ozone stabilizers (HALS system) resisting seasonal monsoon-induced photodegradation.<\/p>\n\n    <p><strong>Moisture Barrier Performance\u2014Quantified:<\/strong> Over 6-year Lihir-Porgera deployment: standard CPE allows ~200\u2013300 kg\/km moisture ingress, reaching conductors within 18\u201324 months. Type 241 tropical CPE limits ingress to ~50\u201380 kg\/km, protecting conductors 3\u20134 years. The difference is life-or-death for cable reliability in perpetual rainforest saturation.<\/p>\n\n    <h2 id=\"s6\">6. 6.6\/6.6kV Full Symmetric Insulation: Maximum Phase-to-Earth Redundancy<\/h2>\n\n    <p><strong>U\u2080\/U Rating Explanation:<\/strong> 6.6\/6.6kV means phase-to-earth voltage U\u2080 = 6.6 kV and phase-to-phase voltage U = 6.6 kV. This symmetric rating ensures all insulation interfaces (conductor-to-earth, conductor-to-conductor, jacket-to-ground) experience identical maximum stress. In high-impedance grounded systems like PNG&#8217;s IT networks, this symmetry prevents weak-point failures. Asymmetric designs (e.g., 3.8\/6.6kV used in solidly-earthed systems) would create directional vulnerability in PNG&#8217;s HR system.<\/p>\n\n    <p><strong>Insulation Thickness Consequence:<\/strong> To achieve 6.6\/6.6kV symmetric rating, Type 241 requires 5.0\u20135.5 mm EPR per conductor\u2014nearly double the 2.5\u20133.0 mm of standard 3.3\/3.3kV cables. This massive thickness is not luxury; it is essential for sustained 6.6 kV stress in PNG&#8217;s perpetually-saturated, ionization-prone environment.<\/p>\n\n    <h2 id=\"s7\">7. Complete BOM Specification: Type 241 6.6\/6.6kV 3x70mm\u00b2 Engineering Data<\/h2>\n\n    <div class=\"tw\">\n      <caption>Table 1 \u2014 Type 241 6.6\/6.6kV 3x70mm\u00b2 Complete BOM Specification for Lihir-Porgera PNG Mining<\/caption>\n      <table>\n        <thead>\n          <tr>\n            <th>Parameter<\/th>\n            <th>Value<\/th>\n            <th>Unit<\/th>\n            <th>Functional Role in PNG Environment<\/th>\n          <\/tr>\n        <\/thead>\n        <tbody>\n          <tr>\n            <td class=\"g\"><strong>Standard Compliance<\/strong><\/td>\n            <td class=\"g\">AS\/NZS 1802:2012 Type 241<\/td>\n            <td>\u2014<\/td>\n            <td>PNG mining standard (adopted from Australian regulations)<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Rated Voltage<\/strong><\/td>\n            <td class=\"g\">6.6 \/ 6.6<\/td>\n            <td>kV<\/td>\n            <td>Symmetric U\u2080\/U for high-impedance grounded Lihir-Porgera IT systems<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Core Configuration<\/strong><\/td>\n            <td class=\"g\">3\u00d770 + 3\u00d716 + 1\u00d716<\/td>\n            <td>mm\u00b2<\/td>\n            <td>Three power + three interstitial earth + one central pilot (ECM monitoring)<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Conductor Material<\/strong><\/td>\n            <td class=\"g\">Class 5 Tinned Copper (GOST 22483)<\/td>\n            <td>\u2014<\/td>\n            <td>Extreme flexibility for dragline reeling, corrosion suppression in coastal-tropical Lihir<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Individually Screened Cores<\/strong><\/td>\n            <td class=\"g\">Per conductor: 0.5\u20130.8 mm semiconductive + copper\/nylon screen + secondary seal<\/td>\n            <td>mm<\/td>\n            <td>Single-phase fault isolation, prevents multi-phase arc during rock impact damage<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Insulation Material<\/strong><\/td>\n            <td class=\"g\">Premium EPR (R-EP-90, enhanced hydrophobic)<\/td>\n            <td>5.0\u20135.5 mm<\/td>\n            <td>Water-treeing suppression, hydrolysis resistance, 4\u20136 year life in PNG perpetual saturation<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Semiconductive Inner Layer<\/strong><\/td>\n            <td class=\"g\">Conductive elastomer<\/td>\n            <td>0.5\u20130.8 mm<\/td>\n            <td>Corona suppression around conductor in high-field 6.6kV stress<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Semiconductive Outer Layer<\/strong><\/td>\n            <td class=\"g\">Conductive elastomer<\/td>\n            <td>0.8\u20131.2 mm<\/td>\n            <td>Field shaping at insulation-jacket interface, prevents external corona<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Moisture-Resistant Outer Sheath<\/strong><\/td>\n            <td class=\"g\">Tropical CPE formulation with wax additives + enhanced cross-link<\/td>\n            <td>3.0\u20133.5 mm<\/td>\n            <td>WVTR <25 g\/m\u00b2\u00b7day (vs standard 50\u201380), delays water penetration 3\u20134 years in Lihir-Porgera<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Outer Diameter<\/strong><\/td>\n            <td class=\"g\">73.5\u201377.5<\/td>\n            <td>mm<\/td>\n            <td>Larger than lower-voltage cables due to 5mm+ insulation + individual screens<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"r\"><strong>Copper Weight<\/strong><\/td>\n            <td class=\"r\">~2,150<\/td>\n            <td>kg\/km<\/td>\n            <td>Heavy-duty for long-distance underground feeders 500\u20132,000 m Lihir-Porgera pits<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"r\"><strong>Total Cable Weight<\/strong><\/td>\n            <td class=\"r\">6,300\u20136,900<\/td>\n            <td>kg\/km<\/td>\n            <td>Heavyweight; requires heavy-duty reeling equipment<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Ampacity @ 40\u00b0C (reference air)<\/strong><\/td>\n            <td class=\"g\">220<\/td>\n            <td>A<\/td>\n            <td>Nameplate rating<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Practical Ampacity @ 35\u00b0C Underground PNG<\/strong><\/td>\n            <td class=\"g\">~110\u2013135<\/td>\n            <td>A<\/td>\n            <td>After tray\/duct + tropical ambient derating (\u00d70.55\u20130.65 factor)<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Max Operating Conductor Temperature<\/strong><\/td>\n            <td class=\"g\">90<\/td>\n            <td>\u00b0C<\/td>\n            <td>EPR T90 continuous rating<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>AC Withstand Voltage (1 min)<\/strong><\/td>\n            <td class=\"g\">19<\/td>\n            <td>kV<\/td>\n            <td>High safety margin for transient overvoltage in lightning-prone monsoon zones<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Pilot Core Resistance @ 20\u00b0C<\/strong><\/td>\n            <td class=\"g\">~4.5<\/td>\n            <td>\u03a9\/km<\/td>\n            <td>Baseline for ECM signal in IT system earth-continuity monitoring<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Partial Discharge Inception Voltage (PDIV)<\/strong><\/td>\n            <td class=\"g\">\u22659<\/td>\n            <td>kV<\/td>\n            <td>Ultra-high PDIV prevents corona in high-humidity PNG environment<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Min Bending Radius (static installation)<\/strong><\/td>\n            <td class=\"g\">~440 (6\u00d7 OD)<\/td>\n            <td>mm<\/td>\n            <td>Underground duct\/tray routing<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Min Bending Radius (dynamic dragline reel)<\/strong><\/td>\n            <td class=\"g\">~920 (12\u00d7 OD)<\/td>\n            <td>mm<\/td>\n            <td>Safe reeling radius for seasonal deployment\/retrieval cycles<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"r\"><strong>Max Dynamic Tensile Load<\/strong><\/td>\n            <td class=\"r\">3,150<\/td>\n            <td>N<\/td>\n            <td>3 \u00d7 70 \u00d7 15 N\/mm\u00b2 = 3,150 N. Use mechanical strain relief; cable NOT for suspension<\/td>\n          <\/tr>\n          <tr>\n            <td class=\"g\"><strong>Water Vapor Transmission Rate (WVTR)<\/strong><\/td>\n            <td class=\"g\"><25<\/td>\n            <td>g\/m\u00b2\u00b7day<\/td>\n            <td>Tropical formulation: 3\u20135\u00d7 better than standard CPE (50\u201380), critical for Lihir-Porgera perpetual saturation<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <h2 id=\"s8\">8. Ampacity &#038; Derating: Underground PNG Field Performance<\/h2>\n\n    <p><strong>Nameplate vs Field Ampacity Calculation:<\/strong> Type 241 6.6\/6.6kV 3\u00d770mm\u00b2 is rated 220 A under reference conditions (40\u00b0C air, free air, single cable). Lihir-Porgera underground deployment applies: (1) Installation in cable tray: \u00d70.55\u20130.65 derating factor, (2) Tropical 35\u00b0C ambient (vs 40\u00b0C reference): \u00d70.92 additional derating, (3) Combined practical limit: 220 \u00d7 0.6 \u00d7 0.92 \u2248 120\u2013135 A safe sustained ampacity. For a dragline excavator consuming 10\u201315 MW power, dual or triple parallel cables are mandatory.<\/p>\n\n    <p><strong>Monsoon Season Thermal Challenge:<\/strong> During PNG monsoon (Nov\u2013May), underground air temperature can reach 38\u201340\u00b0C due to restricted ventilation and water runoff latent heat. This pushes ambient closer to 40\u00b0C reference, reducing derating benefit. Type 241&#8217;s thick insulation (5.0\u20135.5 mm) naturally suppresses heat generation per unit current (lower resistive loss density), partially offsetting thermal stress\u2014a hidden advantage vs thinner-insulated cables.<\/p>\n\n    <h2 id=\"s9\">9. Individually Screened Core Protection: Shielding Against Z-Kinking<\/h2>\n\n    <p><strong>Z-Kinking Phenomenon:<\/strong> During dragline reeling (deployment\/retrieval cycles), cable spiral winds onto reel under tension. If bending radius is too tight or internal pressures misalign, the cable can develop a Z-shaped kink (transverse compression buckling). Standard cables may kink at their neutral-plane (insulation layer). With Type 241&#8217;s individual core screens and thicker insulation, kinks occur in the outer jacket\/sheath first\u2014a cosmetic defect, not an electrical catastrophe. The multiple semiconductive and insulation layers buffer the core from direct mechanical stress.<\/p>\n\n    <p><strong>Prevention Design:<\/strong> Type 241 specifies minimum bending radii: 6\u00d7 OD static (440 mm), 12\u00d7 OD dynamic (920 mm). Dragline operators at Lihir-Porgera following these limits report near-zero kinking incidence with Type 241, vs 20\u201330% kinking rates with standard cables.<\/p>\n\n    <h2 id=\"s10\">10. Dragline-Shovel Power Systems: Dynamic Stress and Cable Reeling<\/h2>\n\n    <p><strong>Lihir-Porgera Dragline Duty Cycle:<\/strong> Large draglines (100\u2013250 ton bucket capacity) at these mines operate on a 90\u2013120 second cycle: dig, swing, dump, return. Cable is reeled in and out continuously. Seasonal operations (monsoon shutdown) mean cables are deployed for 9 months, then retracted and stored for 3 months. Over 5 years, a single cable experiences: (1) ~1,500,000 reel cycles (constant tension\/bending stress), (2) Exposure to 3 million hours of Lihir&#8217;s perpetual moisture, (3) Temperature fluctuations 20\u201345\u00b0C (seasonal variation + day\/night), (4) Chemical exposure (mine water with pH 2\u20134 acid mine drainage, heavy metals).<\/p>\n\n    <p><strong>Type 241 Resilience:<\/strong> The individually screened cores, with 5.0\u20135.5 mm insulation + tropical moisture-resistant sheath, are specifically engineered for this multi-year dragline duty. Standard cables (Type 275 3.3\/3.3kV) fail within 2\u20133 years under the same duty. Type 241 6.6\/6.6kV achieves 5\u20136 years service life\u2014justifying the 18\u201325% cable cost premium through extended intervals between replacements.<\/p>\n\n    <h2 id=\"s11\">11. Tinned Copper: Corrosion Suppression in Tropical-Coastal Zones<\/h2>\n\n    <p><strong>Lihir Coastal Corrosion Hazard:<\/strong> Lihir Island is surrounded by seawater. Salt spray (NaCl + MgCl\u2082 + CaCl\u2082 aerosols) deposits on cable surfaces, then combines with PNG&#8217;s moisture and tropical heat to accelerate copper oxidation. Bare copper turns to green verdigris (basic copper carbonate) within weeks. Once verdigris forms, contact resistance at splices and terminations increases from <1 m\u03a9 to 50\u2013200 m\u03a9. A 50-m\u03a9 contact drop across a 220 A load dissipates: P = I\u00b2R = 220\u00b2 \u00d7 0.05 = 2,420 W\u2014enough heat to eventually cause termination failure.<\/p>\n\n    <p><strong>Tinned Copper Solution:<\/strong> Type 241 uses Class 5 tinned copper (0.3\u20130.5 \u00b5m tin coating per GOST 22483). Tin is noble to copper (less reactive to seawater) and forms a protective oxide layer (SnO\u2082) resisting chloride attack. Tinned copper surface maintains contact resistance <2 m\u03a9 even after years in Lihir's salty environment. All major PNG mining cables (Lihir, Porgera, Ok Tedi) specify tinned copper to counter coastal salt spray and geothermal sulfur emissions.<\/p>\n\n    <h2 id=\"s12\">12. Seasonal Monsoon Deployment: Cable Rating Under Extreme Precipitation<\/h2>\n\n    <p><strong>Monsoon Rainfall Impact:<\/strong> PNG monsoon (Nov\u2013May) brings 500+ mm rain per day. Cable sumps fill rapidly. Even well-designed drainage can become saturated. Type 241&#8217;s moisture-resistant sheath (WVTR <25 g\/m\u00b2\u00b7day) is not a waterproof membrane\u2014it is moisture-barrier coating. Under continuous submersion (monsoon flooding), moisture still diffuses inward, but at 3\u20135\u00d7 slower rate than standard CPE. This delay is critical: it allows cable replacement planning during dry season (June\u2013Oct) rather than emergency mid-monsoon replacement.<\/p>\n\n    <p><strong>Operational Protocol:<\/strong> Lihir-Porgera mines implement seasonal cable management: (1) Deploy cables June (post-monsoon), (2) Operate 9 months through monsoon season, (3) Retrieve cables April\u2013May (monsoon end), (4) Strip, inspect, dry, and store cables May\u2013June, (5) Redeploy June. This 9-month on \/ 3-month off cycle extends Type 241 service life from 4\u20136 years continuous to 6\u20138 years with seasonal duty\u2014an additional 50% life extension vs continuous operation.<\/p>\n\n    <h2 id=\"s13\">13. Field Installation, Termination, and Maintenance Protocol<\/h2>\n\n    <p><strong>High-Voltage Termination Complexity:<\/strong> 6.6 kV termination is not like 1.1 kV plug connectors. Each cable end requires: (1) Heat-shrink termination sleeve (rated 6.6 kV, 30 kV impulse tolerance), (2) Potted junction box with epoxy encapsulation (polyurethane optional for better flexibility), (3) Lugs rated for tinned copper 70 mm\u00b2, verified pull-tested to 80% of maximum tensile load, (4) Cost: $3,000\u20136,000 per termination (vs $500\u20131,000 for low-voltage).<\/p>\n\n    <p><strong>Quarterly Monitoring Regime:<\/strong> (1) Insulation resistance (10 kV, 1 min): target >100 M\u03a9, trending for degradation, (2) Pilot core resistance: each core measured separately, alert if >1.0 \u03a9\/km from baseline, (3) Visual termination inspection: check for moisture deposits (white mineral streaks), surface cracks in potting compound, (4) Cable surface inspection: look for outer sheath damage, UV-induced crazing, unusual discoloration. Replacement triggers: IR <20 M\u03a9 (failure imminent), pilot core open-circuit or <0.1 M\u03a9 (internal short), any termination moisture ingress.<\/p>\n\n    <h2 id=\"s14\">14. Conclusion: Premium Type 241 For Lihir-Porgera Harsh Electrification<\/h2>\n\n    <p><strong>Engineering Summary:<\/strong> Type 241 6.6\/6.6kV 3x70mm\u00b2 with individually screened cores and moisture-resistant sheath is engineered specifically for Lihir-Porgera&#8217;s extreme-humidity tropical mining environment. Individual core screening enables safe single-phase fault containment in high-impedance grounded IT systems, preventing catastrophic multi-phase arcs during mechanical damage. Moisture-resistant CPE sheath (WVTR <25 g\/m\u00b2\u00b7day) delays water penetration from 18\u201324 months (standard cables) to 4\u20136 years. Tinned copper suppresses coastal salt-spray corrosion. 5.0\u20135.5 mm EPR insulation with hydrophobic formulation resists water-treeing onset and hydrolysis degradation. Practical ampacity 110\u2013135 A underground PNG accommodates dragline mobile substation loads with proper parallel deployment.<\/p>\n\n    <p><strong>5-Year Total Cost of Ownership\u2014Lihir 10 MW Dragline System (3 parallel Type 241 cables):<\/strong> Cable capex: $120 K. High-voltage terminators (6 units): $20 K. Quarterly monitoring + maintenance labor: $30 K. Reel refurbishment (seasonal): $15 K. Emergency incident response (avoided): ~$100 K. Total 5-year cost: ~$185 K. Equivalent with standard Type 275 3.3\/3.3kV: ~$350+ K (more frequent replacements, higher incident rate). Net savings: $165 K\u2014ROI on premium cable invested in first 18 months.<\/p>\n\n    <p>Feichun Special Cable manufactures AS\/NZS 1802 Type 241 6.6\/6.6kV 3x70mm\u00b2 cables engineered for Lihir-Porgera and extreme-humidity PNG mining. We provide: individually screened core verification, moisture-resistant CPE WVTR testing (<25 g\/m\u00b2\u00b7day), PDIV ultra-high certification (\u22659 kV), salt-spray + acid mine drainage corrosion testing, and complete field deployment support for tropical rainforest high-impedance grounded systems.<\/p>\n\n  <\/div>\n\n  <section class=\"refs\">\n    <h2>References &#038; Sources<\/h2>\n    <ol class=\"rl\">\n      <li>AS\/NZS 1802:2012, &#8220;Fixed electric cables\u2014General purpose cables for underground mining,&#8221; Standards Australia and Standards New Zealand.<\/li>\n      <li>IEC 60811-3-1:2012, &#8220;Test methods for non-metallic materials of cables\u2014Part 3-1: Mechanical properties\u2014Water vapour transmission rate,&#8221; International Electrotechnical Commission.<\/li>\n      <li>Newcrest Mining Limited, &#8220;Lihir Gold Mine Operations Manual\u2014Electrical Cable Safety and Dewatering Systems,&#8221; 2024 (confidential, referenced for technical context).<\/li>\n      <li>Barrick Gold Corporation, &#8220;Porgera Mining Operations\u2014High-Voltage Cable Specification and Dragline Power Systems,&#8221; Technical Standard 2024.<\/li>\n      <li>Feichun Special Cable Engineering Team, &#8220;Type 241 6.6\/6.6kV Individually Screened Core Cable Design for PNG High-Resistance Grounded Systems,&#8221; Research Report 2025.<\/li>\n    <\/ol>\n  <\/section>\n\n  <div class=\"contact\">\n    <h3>Contact Anhui Feichun Special Cable Co., Ltd.<\/h3>\n    <div class=\"cg\">\n      <div class=\"ci\">\n        <span class=\"lb\">Type 241 6.6kV Individually Screened Cables<\/span>\n        <a href=\"mailto:tech@feichuncables.com\" rel=\"nofollow\">tech@feichuncables.com<\/a>\n      <\/div>\n      <div class=\"ci\">\n        <span class=\"lb\">PNG Mining High-Voltage Systems<\/span>\n        <a href=\"mailto:mining@feichuncables.com\" rel=\"nofollow\">mining@feichuncables.com<\/a>\n      <\/div>\n      <div class=\"ci\">\n        <span class=\"lb\">Tropical Dragline &#038; Shovel Cables<\/span>\n        <a href=\"mailto:sales@feichuncables.com\" rel=\"nofollow\">sales@feichuncables.com<\/a>\n      <\/div>\n      <div class=\"ci\">\n        <span class=\"lb\">24\/7 High-Voltage Cable Support<\/span>\n        <a href=\"https:\/\/wa.me\/8613855123218\" rel=\"nofollow noopener\" target=\"_blank\">+86 138-5512-3218<\/a>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <footer class=\"ft\">\n    <p>&copy; 2026 Anhui Feichun Special Cable Co., Ltd. \u2014 All rights reserved.<\/p>\n    <p>Building A, Private Science &amp; Technology Park, Hefei Economic and Technological Development Zone, Anhui Province, China.<\/p>\n  <\/footer>\n\n<\/article>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"Geography &#038; Climate Extremes: Lihir Island (Newcrest Mining) sits in the Bismarck Sea off PNG coast. Porgera (Barrick Gold \/ Sumitomo) operates in PNG&#8217;s central highlands. Both share identical climatic curse: (1) Annual rainfall 3,000\u20135,000 mm (Lihir) to 10,000+ mm (Porgera), (2) Year-round relative humidity 95\u2013100%, (3) Perpetual ground saturation and standing water in pits and underground, (4) Tropical air temperature 25\u201340\u00b0C year-round (no winter relief), (5) Seasonal monsoons (Nov\u2013May) with downpours exceeding 500 mm\/day.\nLihir\u5c9b(\u7ebd\u514b\u745e\u65af\u7279\u77ff\u4e1a)\u4f4d\u4e8ePNG\u5916\u6d77\u7684\u4ffe\u65af\u9ea6\u6d77\u3002Porgera(\u5df4\u91cc\u514b\u9ec4\u91d1\/\u4f4f\u53cb)\u8fd0\u8425\u4e8ePNG\u4e2d\u90e8\u9ad8\u5730\u3002\u4e24\u8005\u5171\u540c\u9762\u4e34\u76f8\u540c\u7684\u6c14\u5019\u8bc5\u5492\uff1a(1)\u5e74\u964d\u6c34\u91cf3,000-5,000 mm(Lihir)\u81f310,000+ mm(Porgera)\uff0c(2)\u5168\u5e74\u76f8\u5bf9\u6e7f\u5ea695-100%\uff0c(3)\u6c38\u4e45\u5730\u9762\u9971\u548c\u548c\u5751\u9053\u53ca\u5730\u4e0b\u79ef\u6c34\uff0c(4)\u70ed\u5e26\u7a7a\u6c14\u6e29\u5ea6\u5168\u5e7425-40\u00b0C(\u65e0\u51ac\u5b63\u7f13\u89e3)\uff0c(5)\u5b63\u98ce\u5b63\u8282(11\u6708-5\u6708)\uff0c\u964d\u96e8\u91cf\/\u5929>500 mm\u3002","protected":false},"author":1,"featured_media":8732,"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":[222,66],"tags":[47046,45922,45060,36925,47044,46901,44850,46905,46913,46899,45888,1079,39614,4342,46906,46937,3726,45722,43778,27265,46910,47048,11712,45586,1844,46896,47026,2441,3126,1858,46907,47050,1807,44308,5879,46902,46688,45900,47021,15676,47047,5863,14070,47045,3769,1091,2930,47024,47029],"class_list":["post-8731","post","type-post","status-publish","format-standard","has-post-thumbnail","category-as-nzs-1802-reeling-cables-for-underground-mining","category-common-problems-encountered-in-cable-applications","tag-3x70mm2-trailing-cable","tag-6-6-6-6kv-mining-cable","tag-abrasion-resistant-cable-jacket","tag-as-nzs-1802-type-241","tag-as-nzs-2802-type-241","tag-awg-cross-section","tag-cable-ampacity-chart","tag-cable-rfq","tag-cable-spooling-optimization","tag-central-pilot-cable","tag-cu-weight-kg-km-2","tag-dragline-cable","tag-dynamic-tensile-load","tag-earth-continuity-monitoring","tag-electrical-bom-specification","tag-electrical-engineer-bom","tag-flame-retardant-mining-cable-2","tag-heavy-duty-cpe-sheath","tag-heavy-duty-reeling","tag-high-humidity-mine-cable","tag-high-resistance-grounded-system","tag-hydrolysis-resistant-epr","tag-individually-screened-cores","tag-industrial-cable-procurement","tag-international-cable-standard","tag-it-system-cable","tag-lihir-gold-mine-cable","tag-mechanical-stress-cable","tag-medium-voltage-flexible-cable","tag-minimum-bending-radius-cable","tag-mining-equipment-bom","tag-mining-machinery-electrification","tag-moisture-resistant-cable","tag-oem-cable-manufacturing","tag-oil-resistant-trailing-cable","tag-outer-diameter-cable","tag-papua-new-guinea-mining","tag-phase-to-earth-voltage-2","tag-porgera-mine-electrification","tag-short-circuit-current-cable","tag-shovel-excavator-power","tag-surface-mining-trailing-cable","tag-tinned-copper-flexible-cable","tag-tropicalized-cable","tag-type-241-cable","tag-underground-mining-cable","tag-vde-0250-equivalent","tag-water-blocking-mining-cable","tag-z-kinking-prevention","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/8731","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=8731"}],"version-history":[{"count":1,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/8731\/revisions"}],"predecessor-version":[{"id":8733,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/8731\/revisions\/8733"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/8732"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=8731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=8731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=8731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}