{"id":2701,"date":"2025-12-05T14:41:15","date_gmt":"2025-12-05T06:41:15","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=2701"},"modified":"2025-12-05T14:44:16","modified_gmt":"2025-12-05T06:44:16","slug":"what-is-bs-7870-4-10-triplex-cable","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/what-is-bs-7870-4-10-triplex-cable\/","title":{"rendered":"What is BS 7870-4.10 TRIPLEX Cable?"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"c0ced3\" data-has-transparency=\"false\" style=\"--dominant-color: #c0ced3;\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"589\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-1200x589.avif\" alt=\"BS 6622 cable, XLPE insulation, AWA armour, SWA cable, medium voltage cable, 11kV cable, 33kV power cable, underground cable, direct burial cable\" class=\"wp-image-2702 not-transparent\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-1200x589.avif 1200w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-300x147.avif 300w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-768x377.avif 768w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-1536x753.avif 1536w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-400x196.avif 400w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-800x392.avif 800w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-832x408.avif 832w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289-1248x612.avif 1248w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-289.avif 1639w\" \/><\/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    <meta name=\"description\" content=\"Comprehensive guide to BS 7870-4.10 TRIPLEX cables for medium voltage distribution. 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Complete Technical Guide | Feichun Cable<\/title>\n    <style>\n        * {\n            margin: 0;\n            padding: 0;\n            box-sizing: border-box;\n        }\n        \n        body {\n            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n            line-height: 1.7;\n            background-color: #0d1117;\n            color: #c9d1d9;\n        }\n        \n        .container {\n            max-width: 1200px;\n            margin: 0 auto;\n            padding: 20px;\n        }\n        \n        header {\n            background: linear-gradient(135deg, #1a2332 0%, #0d1117 100%);\n            padding: 40px 0;\n            border-bottom: 2px solid #30363d;\n            margin-bottom: 40px;\n        }\n        \n        h1 {\n            color: #58a6ff;\n            font-size: 2.5em;\n            margin-bottom: 15px;\n            text-align: center;\n        }\n        \n        .subtitle {\n            text-align: center;\n            color: #8b949e;\n  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         \n            h2 {\n                font-size: 1.5em;\n            }\n            \n            table {\n                font-size: 0.9em;\n            }\n            \n            .container {\n                padding: 15px;\n            }\n        }\n    <\/style>\n<\/head>\n<body>\n    <header>\n        <div class=\"container\">\n            <h1>What is BS 7870-4.10 TRIPLEX Cable?<\/h1>\n            <p class=\"subtitle\">Complete Technical Guide for Medium Voltage Power Distribution<\/p>\n        <\/div>\n    <\/header>\n\n    <div class=\"container\">\n        <div class=\"company-info\">\n            <h3>Anhui Feichun Special Cable Co., Ltd.<\/h3>\n            <p>\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8<\/p>\n            <p>Professional Manufacturer of High-Quality Medium Voltage Distribution Cables<\/p>\n        <\/div>\n\n        <section id=\"introduction\">\n            <h2>1. Introduction to BS 7870-4.10 TRIPLEX Cable<\/h2>\n            <p>BS 7870-4.10 TRIPLEX cable represents a specialized category of medium voltage power distribution cables designed specifically for utility and industrial applications. According to the British Standards Institution, BS 7870-4.10 specifies requirements for distribution cables with extruded insulation rated from 11 kV to 33 kV. The TRIPLEX formation consists of three single-core cables laid together, providing a more efficient installation solution compared to individually pulled single-core cables.<\/p>\n            \n            <p>These cables are predominantly utilized by Distribution Network Operators (DNOs) and Independent Distribution Network Operators (IDNOs) throughout the United Kingdom and internationally for primary power distribution from sub-main connections to local supply networks. The standard encompasses voltage ratings of 6.35\/11kV, 12.7\/22kV, and 19\/33kV, making it suitable for various medium voltage distribution applications.<\/p>\n            \n            <div class=\"reference\">\n                <p><sup>[8]<\/sup> Cables &#038; Wires Ltd. &#8220;Cable Installation Guidelines &#8211; Best Practices&#8221; <a href=\"https:\/\/www.cables-wires.co.uk\" rel=\"nofollow noopener\" target=\"_blank\">(Cables &#038; Wires, 2024)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"common-problems\">\n            <h2>8. Common Problems and Troubleshooting Solutions<\/h2>\n\n            <h3>8.1 Installation-Related Issues<\/h3>\n            <table>\n                <thead>\n                    <tr>\n                        <th>Problem<\/th>\n                        <th>Cause<\/th>\n                        <th>Prevention\/Solution<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Sheath Cracking During Installation<\/td>\n                        <td>Installation at temperature below 0\u00b0C, excessive bending, over-tensioning<\/td>\n                        <td>Warm cables to above 0\u00b0C before installation, monitor pulling tensions, respect minimum bending radius. Replace damaged sections.<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Insulation Damage During Pulling<\/td>\n                        <td>Sharp edges in ducts, excessive pulling force, inadequate lubrication<\/td>\n                        <td>Inspect and smooth duct entries, use pulling compound, monitor tension continuously. Perform electrical tests after installation to detect damage.<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Incorrect Phase Identification<\/td>\n                        <td>Poor marking, confusion during jointing<\/td>\n                        <td>Maintain clear phase marking throughout installation, verify phasing before energization using proper test equipment<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Joint\/Termination Failure During Testing<\/td>\n                        <td>Poor workmanship, contamination, inadequate stress control<\/td>\n                        <td>Use factory-trained jointers, maintain clean working environment, follow manufacturer instructions precisely. Discard contaminated components.<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>8.2 In-Service Operational Issues<\/h3>\n            \n            <h4>8.2.1 Premature Failure Mechanisms<\/h4>\n            <p>Medium voltage cable failures typically manifest through several well-documented mechanisms:<\/p>\n\n            <div class=\"tech-specs\">\n                <p><strong>Primary Failure Modes and Mitigation:<\/strong><\/p>\n                \n                <p><strong>1. Water Treeing (Long-term Degradation):<\/strong><\/p>\n                <ul>\n                    <li><strong>Mechanism:<\/strong> Microscopic tree-like channels form in XLPE insulation when exposed to moisture and electrical stress over years<\/li>\n                    <li><strong>Risk Factors:<\/strong> Moisture ingress, high humidity environments, voltage stress concentration points<\/li>\n                    <li><strong>Prevention:<\/strong> Specify longitudinal water blocking for moisture-prone installations, use water-tree-retardant XLPE formulations, ensure proper joint sealing<\/li>\n                    <li><strong>Detection:<\/strong> Tan delta (dissipation factor) testing can identify early-stage degradation<\/li>\n                <\/ul>\n\n                <p><strong>2. Partial Discharge Activity:<\/strong><\/p>\n                <ul>\n                    <li><strong>Mechanism:<\/strong> Voids or contamination in insulation or at joints cause localized electrical breakdown<\/li>\n                    <li><strong>Risk Factors:<\/strong> Poor jointing workmanship, insulation defects, inadequate stress control<\/li>\n                    <li><strong>Prevention:<\/strong> Stringent quality control during manufacturing and installation, comprehensive post-installation PD testing<\/li>\n                    <li><strong>Detection:<\/strong> Online PD monitoring systems can provide early warning before failure<\/li>\n                <\/ul>\n\n                <p><strong>3. Thermal Overload:<\/strong><\/p>\n                <ul>\n                    <li><strong>Mechanism:<\/strong> Sustained operation above rated current causes insulation degradation<\/li>\n                    <li><strong>Risk Factors:<\/strong> Undersized cable selection, poor soil thermal conditions, excessive ambient temperature<\/li>\n                    <li><strong>Prevention:<\/strong> Proper cable sizing calculations accounting for all installation factors, periodic thermal monitoring<\/li>\n                    <li><strong>Detection:<\/strong> Distributed Temperature Sensing (DTS) systems can identify hotspots<\/li>\n                <\/ul>\n\n                <p><strong>4. Mechanical Damage:<\/strong><\/p>\n                <ul>\n                    <li><strong>Mechanism:<\/strong> Third-party excavation, ground movement, or installation damage<\/li>\n                    <li><strong>Risk Factors:<\/strong> Inadequate burial depth, poor route marking, unstable ground conditions<\/li>\n                    <li><strong>Prevention:<\/strong> Proper cable route documentation, installation of marker posts, adequate mechanical protection<\/li>\n                    <li><strong>Detection:<\/strong> Cable fault location systems can pinpoint damage location for repair<\/li>\n                <\/ul>\n            <\/div>\n\n            <h3>8.3 Fault Location and Diagnosis<\/h3>\n            <p>When cable faults occur, rapid location and diagnosis minimize downtime and repair costs:<\/p>\n\n            <table>\n                <thead>\n                    <tr>\n                        <th>Fault Type<\/th>\n                        <th>Symptoms<\/th>\n                        <th>Location Method<\/th>\n                        <th>Repair Approach<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Complete Breakdown (Phase-to-Earth)<\/td>\n                        <td>Circuit breaker trip, zero insulation resistance<\/td>\n                        <td>Time Domain Reflectometry (TDR), Impulse Current Method (ICM), Acoustic detection<\/td>\n                        <td>Excavate, install straight-through joint or replacement section<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>High Resistance Fault<\/td>\n                        <td>Intermittent trips, degraded insulation resistance<\/td>\n                        <td>Voltage surge method, burning down to solid fault for conventional location<\/td>\n                        <td>Joint installation at fault location<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Screen\/Sheath Fault<\/td>\n                        <td>Elevated earth leakage current, corrosion indicators<\/td>\n                        <td>Sheath fault location equipment<\/td>\n                        <td>Install local repair sleeve if accessible, monitor if not critical<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Joint Failure<\/td>\n                        <td>Often manifests as tracking or complete breakdown<\/td>\n                        <td>Known joint locations, thermal imaging<\/td>\n                        <td>Replace failed joint with new assembly<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>8.4 Routine Maintenance and Condition Monitoring<\/h3>\n            <p>Proactive maintenance programs significantly extend cable service life. For critical circuits, consider implementing:<\/p>\n\n            <ul>\n                <li><strong>Annual Insulation Resistance Testing:<\/strong> Trending of insulation resistance values can identify gradual degradation<\/li>\n                <li><strong>Tan Delta Testing (3-5 year intervals):<\/strong> Dissipation factor measurements detect water treeing and insulation aging<\/li>\n                <li><strong>Partial Discharge Monitoring:<\/strong> Online or periodic offline PD testing identifies developing issues before failure<\/li>\n                <li><strong>Thermal Imaging:<\/strong> Annual infrared surveys of accessible joints and terminations detect overheating<\/li>\n                <li><strong>Visual Inspection:<\/strong> Regular inspection of accessible cable routes and above-ground sections for physical damage, vermin activity, or environmental degradation<\/li>\n            <\/ul>\n\n            <h3>8.5 Aging Infrastructure Considerations<\/h3>\n            <p>As cables approach their design life expectancy (typically 40+ years for modern XLPE cables), utilities face decisions about refurbishment versus replacement:<\/p>\n\n            <div class=\"info-box\">\n                <p><strong>Life Extension Strategies:<\/strong><\/p>\n                <ul>\n                    <li><strong>Load Management:<\/strong> Reducing operational loads on aging cables can significantly extend remaining life<\/li>\n                    <li><strong>Joint Replacement Program:<\/strong> Joints often fail before cable sections; systematic joint replacement can add 10-15 years<\/li>\n                    <li><strong>Enhanced Monitoring:<\/strong> Increased monitoring frequency provides early warning and allows planned replacement rather than emergency repairs<\/li>\n                    <li><strong>Cable Rejuvenation:<\/strong> Experimental technologies such as silicone injection are being developed to reverse water tree formation, though not yet widely adopted<\/li>\n                <\/ul>\n            <\/div>\n\n            <div class=\"reference\">\n                <p><sup>[9]<\/sup> IEEE Power &#038; Energy Society. &#8220;Cable Condition Monitoring and Diagnostic Technologies &#8211; Review&#8221; <a href=\"https:\/\/www.semanticscholar.org\/paper\/Cable-Condition-Monitoring-and-Diagnostic-A-Review-Bragatto-Cerretti\/8b1c629e7e773c4d6f2e8a75fd8f7cb7d0e856f0\" rel=\"nofollow noopener\" target=\"_blank\">(IEEE PES Technical Report, 2023)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"applications-case-studies\">\n            <h2>9. Industry Applications and Performance Data<\/h2>\n\n            <h3>9.1 Mining and Heavy Industry Applications<\/h3>\n            <p>The mining sector requires robust, reliable power distribution systems capable of operating in harsh environmental conditions. According to industry partners at <a href=\"https:\/\/miningcable.cl\" target=\"_blank\" rel=\"dofollow noopener\">Mining Cable CL<\/a> and <a href=\"https:\/\/amplexmining.com.au\" target=\"_blank\" rel=\"dofollow noopener\">Amplex Mining Australia<\/a>, BS 7870-4.10 TRIPLEX cables have demonstrated excellent performance in:<\/p>\n\n            <ul>\n                <li><strong>Underground Mine Power Distribution:<\/strong> Delivering power from surface substations to underground operations at depths exceeding 1000 meters<\/li>\n                <li><strong>Open Pit Operations:<\/strong> Providing reliable power to mobile equipment, crushers, and conveyor systems in challenging outdoor environments<\/li>\n                <li><strong>Processing Plants:<\/strong> Distributing medium voltage power to grinding mills, flotation systems, and auxiliary equipment<\/li>\n                <li><strong>Renewable Integration:<\/strong> Connecting on-site solar installations and battery energy storage systems to mining infrastructure<\/li>\n            <\/ul>\n\n            <h3>9.2 Crane and Material Handling Systems<\/h3>\n            <p>Industrial crane systems, as detailed by <a href=\"https:\/\/cranecable.com\" target=\"_blank\" rel=\"dofollow noopener\">Crane Cable<\/a>, utilize medium voltage distribution to supply power to high-capacity lifting equipment. The triplex configuration offers specific advantages:<\/p>\n\n            <div class=\"tech-specs\">\n                <p><strong>Performance Benefits for Crane Applications:<\/strong><\/p>\n                <ul>\n                    <li><strong>Simplified Installation:<\/strong> Single-pull triplex reduces installation time by 35-40% in complex crane runway environments<\/li>\n                    <li><strong>Reduced Phase Imbalance:<\/strong> Fixed geometric spacing maintains consistent inductance, improving motor performance<\/li>\n                    <li><strong>Space Efficiency:<\/strong> Compact triplex configuration optimizes limited space in crane galleries and festoon systems<\/li>\n                    <li><strong>Electromagnetic Compatibility:<\/strong> Proper screening reduces interference with crane control systems<\/li>\n                <\/ul>\n            <\/div>\n\n            <h3>9.3 Renewable Energy Infrastructure<\/h3>\n            <p>BS 7870-4.10 TRIPLEX cables play a crucial role in renewable energy projects:<\/p>\n\n            <table>\n                <thead>\n                    <tr>\n                        <th>Application<\/th>\n                        <th>Typical Voltage<\/th>\n                        <th>Key Requirements<\/th>\n                        <th>Performance Data<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Wind Farm Collection Networks<\/td>\n                        <td>11 kV, 33 kV<\/td>\n                        <td>Water blocking, long-term reliability, low maintenance<\/td>\n                        <td>Design life 25+ years, failure rate typically <0.5 faults per 100 km-year<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Solar Farm Interconnection<\/td>\n                        <td>11 kV, 22 kV<\/td>\n                        <td>UV-resistant sheath for exposed sections, thermal performance in desert conditions<\/td>\n                        <td>Ambient temperatures up to 50\u00b0C, direct burial or above-ground tray installation<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Battery Energy Storage Systems<\/td>\n                        <td>11 kV<\/td>\n                        <td>Fast installation, flexibility for expansion<\/td>\n                        <td>Triplex reduces installation time 30-40% vs separate singles<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Hydroelectric Generator Connections<\/td>\n                        <td>11 kV, 22 kV<\/td>\n                        <td>High moisture resistance, fish-friendly installations<\/td>\n                        <td>Waterblocking essential, polyethylene sheath preferred for environmental compatibility<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>9.4 Comparative Performance: Aluminium vs Copper Conductors<\/h3>\n            <p>While copper offers superior conductivity, aluminium provides cost and weight advantages. The following comparison helps designers select the appropriate conductor:<\/p>\n\n            <table>\n                <thead>\n                    <tr>\n                        <th>Parameter<\/th>\n                        <th>Copper Conductor<\/th>\n                        <th>Aluminium Conductor<\/th>\n                        <th>Notes<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Electrical Conductivity<\/td>\n                        <td>100% (reference)<\/td>\n                        <td>61% of copper<\/td>\n                        <td>Requires 1.6\u00d7 cross-section for equivalent ampacity<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Density<\/td>\n                        <td>8.96 g\/cm\u00b3<\/td>\n                        <td>2.70 g\/cm\u00b3<\/td>\n                        <td>Aluminium cables significantly lighter<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Cost (relative)<\/td>\n                        <td>Higher (typically 3-4\u00d7 aluminum)<\/td>\n                        <td>Lower<\/td>\n                        <td>Material cost advantage for long cable runs<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Oxidation<\/td>\n                        <td>Less susceptible<\/td>\n                        <td>Forms oxide layer<\/td>\n                        <td>Proper termination techniques essential for aluminium<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Mechanical Strength<\/td>\n                        <td>Higher tensile strength<\/td>\n                        <td>Lower tensile strength<\/td>\n                        <td>Affects maximum pulling tension (50 N\/mm\u00b2 vs 25 N\/mm\u00b2)<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Thermal Expansion<\/td>\n                        <td>Lower coefficient<\/td>\n                        <td>Higher coefficient<\/td>\n                        <td>Aluminum requires consideration of expansion in long runs<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <p>For typical DNO applications in the UK, aluminium conductors dominate due to cost considerations and established experience. Copper is typically specified for retrofit projects where existing duct capacity limits cable diameter or for installations requiring maximum ampacity in limited space.<\/p>\n\n            <div class=\"reference\">\n                <p><sup>[10]<\/sup> International Copper Association. &#8220;Copper vs Aluminium in Medium Voltage Distribution Systems &#8211; Technical Comparison&#8221; <a href=\"https:\/\/www.copper.org\" rel=\"nofollow noopener\" target=\"_blank\">(ICA Technical Brief, 2023)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"conclusion\">\n            <h2>10. Conclusion: Why Choose BS 7870-4.10 TRIPLEX Cable<\/h2>\n            \n            <p>BS 7870-4.10 TRIPLEX cable represents the industry-standard solution for medium voltage power distribution in the 11 kV to 33 kV range. The combination of proven XLPE insulation technology, robust MDPE or LSZH sheathing, and efficient triplex formation delivers:<\/p>\n\n            <div class=\"tech-specs\">\n                <ul>\n                    <li><strong>Cost-Effective Installation:<\/strong> 35-40% faster installation than separate single cores reduces labor costs<\/li>\n                    <li><strong>Long-Term Reliability:<\/strong> Modern XLPE cables achieve 40+ year service life with proper installation and maintenance<\/li>\n                    <li><strong>Operational Flexibility:<\/strong> Available in three voltage ratings (11 kV, 22 kV, 33 kV) to suit diverse applications<\/li>\n                    <li><strong>Environmental Durability:<\/strong> MDPE sheath provides excellent weather resistance for buried installations<\/li>\n                    <li><strong>Safety Compliance:<\/strong> Meets rigorous BS and IEC standards with comprehensive testing protocols<\/li>\n                    <li><strong>Maintenance Simplicity:<\/strong> Robust construction minimizes routine maintenance requirements<\/li>\n                <\/ul>\n            <\/div>\n\n            <p>Manufactured by <a href=\"https:\/\/feichuncable.com\" target=\"_blank\" rel=\"dofollow noopener\">Anhui Feichun Special Cable Co., Ltd.<\/a> to stringent quality standards, BS 7870-4.10 TRIPLEX cables serve critical power distribution infrastructure across industrial, utility, mining, renewable energy, and commercial sectors worldwide.<\/p>\n\n            <p>Whether you&#8217;re designing a new distribution network, upgrading aging infrastructure, or expanding renewable energy capacity, BS 7870-4.10 TRIPLEX cables deliver the performance, reliability, and value required for mission-critical medium voltage applications.<\/p>\n        <\/section>\n\n        <div class=\"contact-section\">\n            <h2>Contact Anhui Feichun Special Cable Co., Ltd.<\/h2>\n            <p>For technical specifications, quotations, or project consultation on BS 7870-4.10 TRIPLEX cables and other specialized cable solutions:<\/p>\n            \n            <div class=\"contact-grid\">\n                <div class=\"contact-item\">\n                    <strong>Technical Support Email:<\/strong>\n                    <a href=\"mailto:tech@feichuncables.com\">tech@feichuncables.com<\/a>\n                <\/div>\n                \n                <div class=\"contact-item\">\n                    <strong>Sales Inquiries:<\/strong>\n                    <a href=\"mailto:zihao.yang@feichuncable.com\">zihao.yang@feichuncable.com<\/a>\n                <\/div>\n                \n                <div class=\"contact-item\">\n                    <strong>Project Management:<\/strong>\n                    <a href=\"mailto:ziyu.huang@feichuncables.com\">ziyu.huang@feichuncables.com<\/a>\n                <\/div>\n                \n                <div class=\"contact-item\">\n                    <strong>WhatsApp:<\/strong>\n                    <a href=\"https:\/\/wa.me\/8613855123218\" target=\"_blank\" rel=\"noopener\">+86 13855 123218<\/a>\n                <\/div>\n            <\/div>\n\n            <p style=\"margin-top: 20px; text-align: center;\">Our technical team is available to provide detailed cable sizing calculations, installation guidance, and customized solutions for your specific application requirements.<\/p>\n        <\/div>\n\n        <footer>\n            <div class=\"partner-links\">\n                <div class=\"partner-link\">\n                    <a href=\"https:\/\/feichuncable.com\" target=\"_blank\" rel=\"dofollow noopener\">Feichun Cable Official Site<\/a>\n                <\/div>\n                <div class=\"partner-link\">\n                    <a href=\"https:\/\/reelingcable.com\" target=\"_blank\" rel=\"dofollow noopener\">Reeling Cable Solutions<\/a>\n                <\/div>\n                <div class=\"partner-link\">\n                    <a href=\"https:\/\/cranecable.com\" target=\"_blank\" rel=\"dofollow noopener\">Crane Cable Systems<\/a>\n                <\/div>\n                <div class=\"partner-link\">\n                    <a href=\"https:\/\/miningcable.cl\" target=\"_blank\" rel=\"dofollow noopener\">Mining Cable CL<\/a>\n                <\/div>\n                <div class=\"partner-link\">\n                    <a href=\"https:\/\/amplexmining.com.au\" target=\"_blank\" rel=\"dofollow noopener\">Amplex Mining AU<\/a>\n                <\/div>\n            <\/div>\n\n            <p style=\"margin-top: 30px;\">&copy; 2024 Anhui Feichun Special Cable Co., Ltd. (\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8)<\/p>\n            <p style=\"margin-top: 10px; font-size: 0.9em; color: #8b949e;\">\n                All technical specifications subject to verification for specific project requirements. \n                Cable selection should be performed by qualified electrical engineers in accordance with applicable standards and regulations.\n            <\/p>\n        <\/footer>\n    <\/div>\n<\/body>\n<\/html> class=&#8221;reference&#8221;>\n                <p><sup>[1]<\/sup> British Standards Institution. BS 7870-4.10: Specification for distribution cables with extruded insulation of rated voltages of 11 kV to 33 kV <a href=\"https:\/\/tratosgroup.com\/product\/triplex-11-kv-dno-bs-7870\/\" rel=\"nofollow noopener\" target=\"_blank\">(Tratos Group, 2024)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"purpose\">\n            <h2>2. Purpose and Applications<\/h2>\n            \n            <h3>2.1 Primary Purpose<\/h3>\n            <p>The BS 7870-4.10 TRIPLEX cable serves as the critical infrastructure component for distributing electrical power from high-voltage grid supply points to sub-main developments and ultimately to end-user properties. The cable&#8217;s primary functions include:<\/p>\n            \n            <ul>\n                <li>Power distribution from electrical grid connections to sub-main developments<\/li>\n                <li>Underground distribution networks for urban and suburban areas<\/li>\n                <li>Connection between substations and local distribution points<\/li>\n                <li>Industrial and commercial facility power supply systems<\/li>\n                <li>Renewable energy grid integration for wind and solar installations<\/li>\n            <\/ul>\n\n            <h3>2.2 Typical Installation Environments<\/h3>\n            <div class=\"tech-specs\">\n                <p><strong>Approved Installation Methods:<\/strong><\/p>\n                <ul>\n                    <li>Direct burial in ground (most common application)<\/li>\n                    <li>Installation in buried cable ducts and conduits<\/li>\n                    <li>Free air installation when using appropriate support systems<\/li>\n                    <li>Clipped directly to surfaces in controlled environments<\/li>\n                    <li>Cable tray or basket systems for industrial installations<\/li>\n                <\/ul>\n            <\/div>\n\n            <h3>2.3 Industrial Applications<\/h3>\n            <p>BS 7870-4.10 TRIPLEX cables find extensive use across multiple industrial sectors. Mining operations, as detailed by industry partners at <a href=\"https:\/\/miningcable.cl\" target=\"_blank\" rel=\"dofollow noopener\">miningcable.cl<\/a> and <a href=\"https:\/\/amplexmining.com.au\" target=\"_blank\" rel=\"dofollow noopener\">amplexmining.com.au<\/a>, require robust medium voltage distribution solutions for underground and surface operations. The cable&#8217;s durability and resistance to environmental factors make it particularly suitable for demanding mining environments where exposure to moisture, mechanical stress, and varying temperatures is common.<\/p>\n            \n            <p>Similarly, crane and material handling systems, as documented by <a href=\"https:\/\/cranecable.com\" target=\"_blank\" rel=\"dofollow noopener\">cranecable.com<\/a>, utilize these cables for power distribution to heavy machinery and mobile equipment. The triplex configuration reduces installation complexity while maintaining the necessary electrical performance for high-power industrial applications.<\/p>\n            \n            <div class=\"reference\">\n                <p><sup>[2]<\/sup> QZ Group. &#8220;Triplex 11 kV Cable for DNO (BS 7870-4.10 Series) Applications.&#8221; Cable Manufacturing Case Study <a href=\"https:\/\/cable-uni.com\/cases\/cable-news\/triplex-11-kv-cable-for-dno-(bs-7870-4-10-series)-applications.html\" rel=\"nofollow noopener\" target=\"_blank\">(Cable-Uni, 2024)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"characteristics\">\n            <h2>3. Technical Characteristics and Performance Parameters<\/h2>\n\n            <h3>3.1 Voltage Ratings and Electrical Performance<\/h3>\n            <table>\n                <thead>\n                    <tr>\n                        <th>Voltage Rating (U\u2080\/U)<\/th>\n                        <th>Nominal System Voltage<\/th>\n                        <th>Maximum Operating Voltage<\/th>\n                        <th>Typical Applications<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>6.35\/11 kV<\/td>\n                        <td>11 kV<\/td>\n                        <td>12 kV<\/td>\n                        <td>Urban\/suburban distribution, industrial complexes<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>12.7\/22 kV<\/td>\n                        <td>22 kV<\/td>\n                        <td>24 kV<\/td>\n                        <td>Primary distribution networks, large facilities<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>19\/33 kV<\/td>\n                        <td>33 kV<\/td>\n                        <td>36 kV<\/td>\n                        <td>High voltage distribution, generation utilities<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>3.2 Temperature Performance Specifications<\/h3>\n            <div class=\"tech-specs\">\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Operating Condition<\/th>\n                            <th>Temperature Rating<\/th>\n                            <th>Duration<\/th>\n                            <th>Reference Standard<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>Continuous Operation<\/td>\n                            <td>+90\u00b0C<\/td>\n                            <td>Continuous<\/td>\n                            <td>BS 7870-1 Annex B<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Emergency Overload<\/td>\n                            <td>+130\u00b0C<\/td>\n                            <td>Limited period<\/td>\n                            <td>IEC 60502-2<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Short Circuit (1 second)<\/td>\n                            <td>+250\u00b0C<\/td>\n                            <td>1 second maximum<\/td>\n                            <td>International standards<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Installation Temperature<\/td>\n                            <td>0\u00b0C minimum<\/td>\n                            <td>During installation<\/td>\n                            <td>BS 7870-4.10<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Low Temperature Flexibility<\/td>\n                            <td>-40\u00b0C<\/td>\n                            <td>Material property<\/td>\n                            <td>XLPE specification<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <h3>3.3 Triplex Configuration Advantages<\/h3>\n            <p>The triplex formation offers significant installation and operational benefits compared to traditional three separate single-core cables. According to industry analysis from <a href=\"https:\/\/reelingcable.com\" target=\"_blank\" rel=\"dofollow noopener\">reelingcable.com<\/a>, the key performance advantages include:<\/p>\n            \n            <div class=\"info-box\">\n                <p><strong>Installation Efficiency Comparison:<\/strong><\/p>\n                <ul>\n                    <li><strong>Installation Time:<\/strong> Approximately 35-40% faster than pulling three separate single-core cables<\/li>\n                    <li><strong>Cable Handling:<\/strong> Single pull operation reduces labor requirements by 30-35%<\/li>\n                    <li><strong>Trench Utilization:<\/strong> More efficient use of duct space, reducing civil work costs by 20-25%<\/li>\n                    <li><strong>Phase Balance:<\/strong> Pre-assembled configuration ensures consistent spacing and reduces electromagnetic imbalance<\/li>\n                    <li><strong>Termination Simplicity:<\/strong> All three phases arrive simultaneously, streamlining connection procedures<\/li>\n                <\/ul>\n            <\/div>\n\n            <div class=\"reference\">\n                <p><sup>[3]<\/sup> Eland Cables. &#8220;BS7870-4.10 Standard: Cable specifications and applications&#8221; <a href=\"https:\/\/www.elandcables.com\/electrical-cable-and-accessories\/cables-by-standard\/bs-7870-cable\" rel=\"nofollow noopener\" target=\"_blank\">(Eland Cables, 2024)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"material-structure\">\n            <h2>4. Material Structure and Construction Details<\/h2>\n\n            <h3>4.1 Conductor Specifications<\/h3>\n            <table>\n                <thead>\n                    <tr>\n                        <th>Component<\/th>\n                        <th>Specification<\/th>\n                        <th>Standard<\/th>\n                        <th>Technical Details<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Conductor Material<\/td>\n                        <td>Class 2 Aluminium or Class 2 Copper<\/td>\n                        <td>BS EN 60228<\/td>\n                        <td>Stranded circular compacted or solid aluminium<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Aluminium Cross-sections<\/td>\n                        <td>70 &#8211; 300 mm\u00b2<\/td>\n                        <td>Standard sizes<\/td>\n                        <td>70, 95, 120, 150, 185, 240, 300 mm\u00b2<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Copper Cross-sections<\/td>\n                        <td>70 &#8211; 1000 mm\u00b2<\/td>\n                        <td>Standard sizes<\/td>\n                        <td>Extended range up to 1000 mm\u00b2 for high current<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Conductor Screen<\/td>\n                        <td>Semi-conductive compound<\/td>\n                        <td>BS 7870-1<\/td>\n                        <td>Extruded bonded or strippable layer<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>4.2 Insulation System<\/h3>\n            <p>The insulation system represents the critical electrical barrier in BS 7870-4.10 TRIPLEX cables. Cross-Linked Polyethylene (XLPE) serves as the primary insulation material, offering superior electrical and thermal performance compared to traditional alternatives.<\/p>\n\n            <div class=\"tech-specs\">\n                <p><strong>XLPE Insulation Properties (Type DIX 3 per BS 7870-1 Annex B):<\/strong><\/p>\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Property<\/th>\n                            <th>Value\/Characteristic<\/th>\n                            <th>Advantage<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>Dielectric Strength<\/td>\n                            <td>High (low dissipation factor)<\/td>\n                            <td>Minimal dielectric losses, improved efficiency<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Continuous Temperature<\/td>\n                            <td>90\u00b0C<\/td>\n                            <td>Higher current capacity than PVC (70\u00b0C)<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Thermal Stability<\/td>\n                            <td>Maintains properties to 250\u00b0C short-term<\/td>\n                            <td>Superior fault current withstand capability<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Moisture Resistance<\/td>\n                            <td>Excellent (with water blocking)<\/td>\n                            <td>Enhanced reliability in wet environments<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Chemical Resistance<\/td>\n                            <td>Resistant to acids, bases, oils<\/td>\n                            <td>Extended service life in harsh conditions<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Mechanical Strength<\/td>\n                            <td>High tensile and impact resistance<\/td>\n                            <td>Durability during installation and operation<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <p>According to research on XLPE cable materials, cross-linking significantly enhances the molecular stability of polyethylene, improving resistance to water treeing &#8211; a primary aging mechanism in medium voltage cables. Water-resistant XLPE formulations can extend cable service life from 20-25 years for standard XLPE to over 40 years for advanced tree-retardant compounds.<\/p>\n\n            <h3>4.3 Metallic Screening System<\/h3>\n            <p>The metallic screen serves multiple critical functions: electromagnetic interference (EMI) screening, fault current path, and equipotential grounding. BS 7870-4.10 specifies precise requirements for screen construction:<\/p>\n\n            <table>\n                <thead>\n                    <tr>\n                        <th>Screen Component<\/th>\n                        <th>Construction<\/th>\n                        <th>Cross-section<\/th>\n                        <th>Function<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Copper Wire Screen<\/td>\n                        <td>Helically applied plain annealed copper wires<\/td>\n                        <td>35 mm\u00b2 or 50 mm\u00b2 (typical)<\/td>\n                        <td>Primary earth path and EMI shielding<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Copper Equalising Tape<\/td>\n                        <td>Helically wound copper tape<\/td>\n                        <td>Variable thickness<\/td>\n                        <td>Uniform field distribution and additional screening<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Semi-conductive Tape<\/td>\n                        <td>Under wire screen (optional)<\/td>\n                        <td>N\/A<\/td>\n                        <td>Prevents screen encapsulation in sheath<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>4.4 Water Blocking Technology<\/h3>\n            <p>For installations in moisture-prone environments, longitudinal water blocking provides critical protection against moisture ingress that could compromise insulation integrity:<\/p>\n\n            <div class=\"info-box\">\n                <p><strong>Water Blocking System Components:<\/strong><\/p>\n                <ul>\n                    <li><strong>Semi-conductive Swellable Tapes:<\/strong> Applied below the metallic screen to create a moisture barrier at the conductor interface<\/li>\n                    <li><strong>Non-conductive Swellable Tapes:<\/strong> Wrapped on either side of the metallic screen to prevent longitudinal water migration<\/li>\n                    <li><strong>Swelling Mechanism:<\/strong> Tapes absorb water and expand to form a gel barrier, blocking further moisture penetration<\/li>\n                    <li><strong>Application:<\/strong> Particularly critical for wind farm installations and submarine cable routes where water exposure is inevitable<\/li>\n                <\/ul>\n            <\/div>\n\n            <h3>4.5 Outer Sheath Options<\/h3>\n            <table>\n                <thead>\n                    <tr>\n                        <th>Sheath Type<\/th>\n                        <th>Material Code<\/th>\n                        <th>Properties<\/th>\n                        <th>Applications<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>MDPE (Type A)<\/td>\n                        <td>DMP 5 per BS 7870-1<\/td>\n                        <td>UV resistant, weather-resistant, flexible, durable. Black or red color.<\/td>\n                        <td>Standard for buried and outdoor installations. Not flame retardant &#8211; unsuitable for fixed building installations requiring CPR compliance.<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>LSZH (Type B)<\/td>\n                        <td>DMZ 4 per BS 7870-1<\/td>\n                        <td>Low smoke emission, zero halogen, flame retardant per BS EN 60332-1-2 and 60332-3-24<\/td>\n                        <td>Required for installations with fire safety requirements, tunnels, confined spaces, public buildings<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>4.6 Complete Layer Construction Sequence<\/h3>\n            <p>From inner to outer layer, the BS 7870-4.10 TRIPLEX cable construction follows this precise sequence (as manufactured by <a href=\"https:\/\/feichuncable.com\" target=\"_blank\" rel=\"dofollow noopener\">Anhui Feichun Special Cable Co., Ltd.<\/a>):<\/p>\n            \n            <ol>\n                <li><strong>Conductor:<\/strong> Class 2 stranded aluminium or copper conductor<\/li>\n                <li><strong>Conductor Screen:<\/strong> Extruded semi-conductive layer (bonded type)<\/li>\n                <li><strong>Insulation:<\/strong> XLPE Type DIX 3, applied by triple extrusion process<\/li>\n                <li><strong>Insulation Screen:<\/strong> Extruded semi-conductive layer (strippable or bonded)<\/li>\n                <li><strong>Water Blocking (Optional):<\/strong> Semi-conductive swellable tape<\/li>\n                <li><strong>Metallic Screen:<\/strong> Copper wire screen + copper equalising tape<\/li>\n                <li><strong>Water Blocking (Optional):<\/strong> Non-conductive swellable tapes<\/li>\n                <li><strong>Separator\/Binder:<\/strong> Tape to prevent screen encapsulation<\/li>\n                <li><strong>Outer Sheath:<\/strong> MDPE or LSZH extruded jacket<\/li>\n                <li><strong>Marking:<\/strong> Continuous longitudinal marking with manufacturer, standard, size, year, and sequential meter marks<\/li>\n            <\/ol>\n\n            <div class=\"reference\">\n                <p><sup>[4]<\/sup> Performance Wire. &#8220;XLPE Cable Properties and Applications&#8221; <a href=\"https:\/\/www.performancewire.com\/xlpe-cable-and-frequently-asked-questions-faq\/\" rel=\"nofollow noopener\" target=\"_blank\">(Performance Wire, September 2024)<\/a><\/p>\n                <p><sup>[5]<\/sup> ZMS Cable. &#8220;XLPE Material in Medium Voltage Cable &#8211; Technical Analysis&#8221; <a href=\"https:\/\/m.zmscable.com\/new\/XLPE-material-in-Medium-voltage-cable\" rel=\"nofollow noopener\" target=\"_blank\">(ZMS Cable, 2024)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"standards\">\n            <h2>5. Compliance with International Standards<\/h2>\n\n            <h3>5.1 Primary Standards and Specifications<\/h3>\n            <table>\n                <thead>\n                    <tr>\n                        <th>Standard<\/th>\n                        <th>Title\/Scope<\/th>\n                        <th>Key Requirements<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td><strong>BS 7870-4.10<\/strong><\/td>\n                        <td>Specification for distribution cables with extruded insulation (11kV-33kV)<\/td>\n                        <td>Construction, dimensions, electrical tests, performance requirements for DNO applications<\/td>\n                    <\/tr>\n                    <tr>\n                        <td><strong>BS 7870-1<\/strong><\/td>\n                        <td>General requirements and test methods<\/td>\n                        <td>Material specifications in Annex B (DIX 3 XLPE, DMP 5 MDPE, DMZ 4 LSZH, DIE 5 EPR)<\/td>\n                    <\/tr>\n                    <tr>\n                        <td><strong>BS EN 60228<\/strong><\/td>\n                        <td>Conductors of insulated cables<\/td>\n                        <td>Class 1 (solid) and Class 2 (stranded) conductor specifications<\/td>\n                    <\/tr>\n                    <tr>\n                        <td><strong>IEC 60502-2<\/strong><\/td>\n                        <td>Power cables with extruded insulation (1kV-30kV)<\/td>\n                        <td>International equivalent, harmonized electrical requirements<\/td>\n                    <\/tr>\n                    <tr>\n                        <td><strong>HD 620 S2<\/strong><\/td>\n                        <td>European harmonization document<\/td>\n                        <td>Part 100 and Part 110 implemented by BS 7870-4.10<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>5.2 Fire Performance Standards (LSZH Type B Only)<\/h3>\n            <table>\n                <thead>\n                    <tr>\n                        <th>Test Standard<\/th>\n                        <th>Test Description<\/th>\n                        <th>Requirement<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>BS EN 60332-1-2<\/td>\n                        <td>Flame propagation on single vertical insulated wire\/cable<\/td>\n                        <td>Cable must self-extinguish within specified time<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>BS EN IEC 60332-3-24<\/td>\n                        <td>Flame propagation on bunched cables (Category C)<\/td>\n                        <td>Limited flame spread in cable bunches<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>BS EN 61034<\/td>\n                        <td>Smoke emission measurement<\/td>\n                        <td>Minimum light transmittance maintained during combustion<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>BS EN IEC 60754<\/td>\n                        <td>Acid gas emission and corrosivity<\/td>\n                        <td>Low acidity and conductivity of combustion gases<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>5.3 Electrical Testing Requirements<\/h3>\n            <p>Before cables can be released for installation, they must pass rigorous type testing and routine production testing protocols:<\/p>\n\n            <div class=\"tech-specs\">\n                <p><strong>Routine Electrical Tests (performed on every cable length):<\/strong><\/p>\n                <ul>\n                    <li><strong>Conductor DC Resistance:<\/strong> Verification of conductor sizing and material purity<\/li>\n                    <li><strong>Partial Discharge Test:<\/strong> Detection of insulation defects under applied voltage<\/li>\n                    <li><strong>AC Voltage Withstand:<\/strong> 4-hour test at elevated voltage to verify insulation integrity<\/li>\n                    <li><strong>DC Sheath Integrity:<\/strong> Testing of outer sheath for continuity and resistance<\/li>\n                <\/ul>\n\n                <p><strong>Type Tests (performed on representative samples for design approval):<\/strong><\/p>\n                <ul>\n                    <li><strong>Impulse Voltage Test:<\/strong> Lightning impulse (1.2\/50 \u03bcs) and switching impulse testing<\/li>\n                    <li><strong>Thermal Aging:<\/strong> Extended exposure to elevated temperatures to verify long-term stability<\/li>\n                    <li><strong>Water Penetration:<\/strong> Longitudinal water blocking effectiveness verification<\/li>\n                    <li><strong>Mechanical Tests:<\/strong> Bending, tensile, impact, and crush tests<\/li>\n                    <li><strong>Short Circuit Test:<\/strong> Validation of conductor and screen capacity under fault conditions<\/li>\n                    <li><strong>Fire Performance:<\/strong> Flame propagation, smoke density, and acid gas tests (LSZH versions)<\/li>\n                <\/ul>\n            <\/div>\n\n            <h3>5.4 DNO-Specific Requirements<\/h3>\n            <p>Individual Distribution Network Operators often supplement BS 7870-4.10 with additional specifications. For example, Western Power Distribution requires compliance with Engineering Specification EE82 in addition to BS 7870-4.10, which may specify particular screen sizes, sheath colors (red MDPE for WPD), or marking requirements.<\/p>\n\n            <div class=\"warning-box\">\n                <p><strong>Important Compliance Note:<\/strong> While BS 7870-4.10 provides the base standard, always verify specific DNO requirements before procurement. Screen cross-sectional areas, material thicknesses, and testing protocols may be customized to individual DNO specifications and are not necessarily interchangeable between different network operators.<\/p>\n            <\/div>\n\n            <div class=\"reference\">\n                <p><sup>[6]<\/sup> Tratos Group. &#8220;11 kV Single and Triplex Cable for Western Power Distribution &#8211; BS 7870-4.10 and EE82&#8221; <a href=\"https:\/\/tratosgroup.com\/product\/triplex-11-kv-wpd-bs-7870\/\" rel=\"nofollow noopener\" target=\"_blank\">(Tratos Group, February 2024)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"safety\">\n            <h2>6. Safety Thresholds and Operational Limits<\/h2>\n\n            <h3>6.1 Current Carrying Capacity<\/h3>\n            <p>The current-carrying capacity (ampacity) of BS 7870-4.10 TRIPLEX cables depends on multiple factors including conductor size, installation method, ambient temperature, and soil thermal resistivity. The following table provides typical continuous current ratings:<\/p>\n\n            <table>\n                <thead>\n                    <tr>\n                        <th>Conductor Size<\/th>\n                        <th>Material<\/th>\n                        <th>Direct Buried (90\u00b0C)<\/th>\n                        <th>In Ducts (90\u00b0C)<\/th>\n                        <th>In Air (90\u00b0C)<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>70 mm\u00b2<\/td>\n                        <td>Aluminium<\/td>\n                        <td>~195 A<\/td>\n                        <td>~175 A<\/td>\n                        <td>~210 A<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>95 mm\u00b2<\/td>\n                        <td>Aluminium<\/td>\n                        <td>~235 A<\/td>\n                        <td>~210 A<\/td>\n                        <td>~250 A<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>150 mm\u00b2<\/td>\n                        <td>Aluminium<\/td>\n                        <td>~305 A<\/td>\n                        <td>~270 A<\/td>\n                        <td>~325 A<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>185 mm\u00b2<\/td>\n                        <td>Aluminium<\/td>\n                        <td>~355 A<\/td>\n                        <td>~315 A<\/td>\n                        <td>~375 A<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>240 mm\u00b2<\/td>\n                        <td>Aluminium<\/td>\n                        <td>~425 A<\/td>\n                        <td>~375 A<\/td>\n                        <td>~450 A<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>300 mm\u00b2<\/td>\n                        <td>Aluminium<\/td>\n                        <td>~490 A<\/td>\n                        <td>~430 A<\/td>\n                        <td>~520 A<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <p><em>Note: These values are indicative for 11kV cables in typical installation conditions (soil thermal resistivity 1.0 K.m\/W, ambient\/soil temperature 20\u00b0C). Actual ratings must be calculated for specific project conditions using appropriate cable sizing software or standards such as IEC 60364-5-52.<\/em><\/p>\n\n            <h3>6.2 Bending Radius Limitations<\/h3>\n            <div class=\"tech-specs\">\n                <p><strong>Minimum Bending Radius Requirements:<\/strong><\/p>\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Installation Condition<\/th>\n                            <th>Minimum Bending Radius<\/th>\n                            <th>Calculation Method<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>During Installation<\/td>\n                            <td>15 \u00d7 Overall Cable Diameter<\/td>\n                            <td>For single core cables in triplex formation<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Fixed Installation<\/td>\n                            <td>12 \u00d7 Overall Cable Diameter<\/td>\n                            <td>After installation is complete<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>LSZH Sheath (Low Temp)<\/td>\n                            <td>20 \u00d7 Overall Cable Diameter<\/td>\n                            <td>LSZH materials less flexible at low temperatures<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <p><strong>Example:<\/strong> For a 185 mm\u00b2 aluminium conductor cable with overall diameter of 45 mm, the minimum installation bending radius would be 15 \u00d7 45 mm = 675 mm (0.675 m).<\/p>\n\n            <h3>6.3 Short Circuit Performance<\/h3>\n            <p>The cable must withstand fault currents without damage to conductors or insulation:<\/p>\n\n            <table>\n                <thead>\n                    <tr>\n                        <th>Component<\/th>\n                        <th>Short Circuit Temperature Limit<\/th>\n                        <th>Duration<\/th>\n                        <th>Design Consideration<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>XLPE Insulation<\/td>\n                        <td>250\u00b0C maximum<\/td>\n                        <td>1 second<\/td>\n                        <td>Conductor sizing must account for fault current magnitude and clearing time<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Copper Wire Screen<\/td>\n                        <td>160\u00b0C (plain copper)<\/td>\n                        <td>1 second<\/td>\n                        <td>Screen cross-section sized according to Table 6 in BS 7870-4.10<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Aluminium Conductor<\/td>\n                        <td>Thermal limit per BS 7870-4.10<\/td>\n                        <td>1 second<\/td>\n                        <td>Short circuit current capacity lower than copper, requires larger conductor for equivalent fault performance<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>6.4 Installation Temperature Limits<\/h3>\n            <div class=\"warning-box\">\n                <p><strong>Critical Safety Requirement:<\/strong> Cables must not be handled or installed when cable temperature is below 0\u00b0C. At temperatures below freezing, MDPE and XLPE materials lose flexibility and risk cracking or mechanical damage during installation.<\/p>\n                \n                <p><strong>Storage and Handling:<\/strong> If cables have been stored in sub-zero conditions, they must be allowed to warm to above 0\u00b0C before installation commences. For LSZH sheathed cables, a higher minimum temperature (typically +5\u00b0C) is recommended due to the different material properties.<\/p>\n            <\/div>\n\n            <h3>6.5 Voltage Stress and Insulation Margins<\/h3>\n            <p>The cable&#8217;s insulation system is designed with safety margins to withstand various voltage stresses:<\/p>\n\n            <ul>\n                <li><strong>Normal Operating Voltage:<\/strong> Cable rated voltage (U\u2080\/U) provides 15-20% margin above nominal system voltage<\/li>\n                <li><strong>Temporary Overvoltage:<\/strong> Can withstand system overvoltages due to switching or ground faults for limited periods<\/li>\n                <li><strong>Impulse Voltage:<\/strong> Withstands lightning impulses per BS 7870-4.10 impulse test requirements<\/li>\n                <li><strong>Partial Discharge Extinction:<\/strong> Operates well below partial discharge inception voltage to ensure long-term reliability<\/li>\n            <\/ul>\n\n            <h3>6.6 Support Spacing for Aerial Installation<\/h3>\n            <p>When cables are installed in free air or on cable supports rather than direct burial, appropriate support spacing must be maintained to prevent excessive sag and mechanical stress:<\/p>\n\n            <table>\n                <thead>\n                    <tr>\n                        <th>Installation Angle<\/th>\n                        <th>Recommended Maximum Support Spacing<\/th>\n                        <th>Notes<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Horizontal<\/td>\n                        <td>0.5 &#8211; 1.0 m (depending on cable size)<\/td>\n                        <td>Closer spacing for heavier cables<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Vertical (up to 30\u00b0)<\/td>\n                        <td>1.0 &#8211; 1.5 m<\/td>\n                        <td>Weight supported primarily by clamps<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Vertical (over 30\u00b0)<\/td>\n                        <td>Use horizontal spacing<\/td>\n                        <td>Cable weight creates significant tension<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <div class=\"reference\">\n                <p><sup>[7]<\/sup> Prysmian UK. &#8220;Product Guide &#8211; BS 7870-4.10 Cable Construction&#8221; <a href=\"https:\/\/uk.prysmian.com\/sites\/uk.prysmian.com\/files\/2024-09\/Product guide templates June 2024 - BS 7870-4.10.pdf\" rel=\"nofollow noopener\" target=\"_blank\">(Prysmian, September 2024)<\/a><\/p>\n            <\/div>\n        <\/section>\n\n        <section id=\"precautions\">\n            <h2>7. Precautions for Use and Installation Best Practices<\/h2>\n\n            <h3>7.1 Pre-Installation Inspection<\/h3>\n            <div class=\"info-box\">\n                <p><strong>Mandatory Checks Before Installation:<\/strong><\/p>\n                <ul>\n                    <li>Verify cable drum labeling matches project specifications (voltage rating, conductor size, length)<\/li>\n                    <li>Inspect outer sheath for visible damage from transport or storage<\/li>\n                    <li>Check cable temperature is above 0\u00b0C (above +5\u00b0C for LSZH)<\/li>\n                    <li>Confirm route survey completed and trenches\/ducts prepared to correct dimensions<\/li>\n                    <li>Verify pulling equipment rated for cable weight and tension limits<\/li>\n                    <li>Ensure proper electrical test equipment available for post-installation verification<\/li>\n                <\/ul>\n            <\/div>\n\n            <h3>7.2 Cable Handling and Transportation<\/h3>\n            <p><strong>Drum Handling:<\/strong> Cable drums should be handled in accordance with BS 8512 guidelines. Key safety considerations include:<\/p>\n            \n            <ul>\n                <li>Use appropriate lifting equipment rated for drum weight (typical 11kV triplex drums weigh 2000-5000 kg when fully loaded)<\/li>\n                <li>Never drop drums or allow impact damage<\/li>\n                <li>Store drums on firm, level ground with drum flanges protected<\/li>\n                <li>Maintain drum rotation direction marked on flange during uncoiling<\/li>\n                <li>Secure drums during transport to prevent rolling or movement<\/li>\n            <\/ul>\n\n            <h3>7.3 Installation Method Selection<\/h3>\n            <table>\n                <thead>\n                    <tr>\n                        <th>Installation Method<\/th>\n                        <th>Suitable Conditions<\/th>\n                        <th>Key Precautions<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Direct Burial<\/td>\n                        <td>Most common for distribution cables<\/td>\n                        <td>Minimum burial depth 600 mm, install warning tape 300 mm above cable, backfill with fine material free of sharp stones<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Ducted Installation<\/td>\n                        <td>Urban areas, road crossings<\/td>\n                        <td>Use appropriate duct diameter (typically 1.5-2\u00d7 cable OD), install pulling tape, apply pulling compound to reduce friction<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Cable Tray\/Basket<\/td>\n                        <td>Industrial installations, cable galleries<\/td>\n                        <td>Maintain support spacing per section 6.6, secure with appropriate cleats, allow for thermal expansion<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Clipped Direct<\/td>\n                        <td>Indoor substations, walls<\/td>\n                        <td>Use non-metallic cleats to avoid induced currents, maintain phase spacing, ensure adequate support<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>7.4 Pulling Tension Limitations<\/h3>\n            <div class=\"warning-box\">\n                <p><strong>Maximum Pulling Tensions &#8211; Critical Safety Limits:<\/strong><\/p>\n                <ul>\n                    <li><strong>Copper Conductor:<\/strong> Maximum tension = 50 N\/mm\u00b2 of conductor cross-section<\/li>\n                    <li><strong>Aluminium Conductor:<\/strong> Maximum tension = 25 N\/mm\u00b2 of conductor cross-section (lower due to softer material)<\/li>\n                    <li><strong>Example for 185 mm\u00b2 Al:<\/strong> Maximum pulling force = 25 \u00d7 185 = 4625 N (approximately 472 kg)<\/li>\n                <\/ul>\n                <p>Exceeding these limits can cause conductor deformation, insulation damage, or sheath cracking. Always use tension monitoring equipment for long or difficult pulls.<\/p>\n            <\/div>\n\n            <h3>7.5 Jointing and Termination Requirements<\/h3>\n            <p>Medium voltage cable jointing and termination requires specialist skills and equipment. Only personnel qualified as &#8220;skilled persons&#8221; under the Electricity Safety, Quality and Continuity Regulations (ESQCR) should perform this work:<\/p>\n\n            <ul>\n                <li><strong>Joint Selection:<\/strong> Use joints and terminations specifically approved for BS 7870-4.10 cables and the installed voltage rating<\/li>\n                <li><strong>Heat Shrink Technology:<\/strong> Most modern joints use heat shrink construction for indoor and outdoor applications<\/li>\n                <li><strong>Cold Shrink Alternatives:<\/strong> Pre-expanded cold shrink joints available for situations where heat sources are prohibited<\/li>\n                <li><strong>Stress Control:<\/strong> Critical to properly install stress control components at the insulation screen interface<\/li>\n                <li><strong>Screen Continuity:<\/strong> Metallic screens must be properly connected through joints to maintain earth continuity<\/li>\n                <li><strong>Environmental Sealing:<\/strong> Outdoor joints require appropriate environmental sealing against moisture ingress<\/li>\n            <\/ul>\n\n            <h3>7.6 Testing Before Energization<\/h3>\n            <p>After installation and before connection to the network, comprehensive testing must verify cable integrity:<\/p>\n\n            <table>\n                <thead>\n                    <tr>\n                        <th>Test Type<\/th>\n                        <th>Purpose<\/th>\n                        <th>Typical Values\/Criteria<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Insulation Resistance<\/td>\n                        <td>Detect gross insulation defects<\/td>\n                        <td>Minimum 100 M\u03a9 at installation voltage, typically much higher for new cables<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>DC High Voltage Withstand<\/td>\n                        <td>Stress test insulation system<\/td>\n                        <td>Typically 3-4\u00d7 rated voltage AC equivalent, applied for 5-15 minutes<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Partial Discharge<\/td>\n                        <td>Detect workmanship issues in joints\/terminations<\/td>\n                        <td>Should be below detectable limits at 1.5\u00d7 rated voltage<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Phase Identification<\/td>\n                        <td>Verify correct phase connections<\/td>\n                        <td>Must match system phasing and rotation<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Screen Continuity<\/td>\n                        <td>Ensure proper earth path<\/td>\n                        <td>Low resistance connection throughout cable length<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>7.7 Environmental Considerations<\/h3>\n            <ul>\n                <li><strong>Corrosive Soils:<\/strong> In acidic or alkaline soils, consider additional mechanical protection or increased burial depth<\/li>\n                <li><strong>High Water Table:<\/strong> Ensure water blocking options specified for permanently wet installations<\/li>\n                <li><strong>Mechanical Threats:<\/strong> Install protective slabs or ducts in areas subject to excavation or vehicular traffic<\/li>\n                <li><strong>Thermal Environment:<\/strong> Account for heat sources (other cables, steam pipes) when calculating current capacity<\/li>\n                <li><strong>UV Exposure:<\/strong> While MDPE sheaths are UV-resistant, prolonged exposure (months\/years) can cause surface degradation. For long-term above-ground installations, consider UV-stabilized ducts or protective coatings<\/li>\n            <\/ul>\n\n            <h3>7.8 Decommissioning and Disposal<\/h3>\n            <p>At end of service life, cables should be properly decommissioned and recycled:<\/p>\n            \n            <ul>\n                <li>De-energize and disconnect from supply system using established safety procedures<\/li>\n                <li>Copper and aluminium conductors have significant recycling value<\/li>\n                <li>XLPE and MDPE materials can be mechanically recycled into secondary products<\/li>\n                <li>Properly dispose of any materials that cannot be recycled per local environmental regulations<\/li>\n            <\/ul>\n\n            <div\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/Control-Instrumentation-Cable-Specification-_-Anhui-Feichun-Special-Cable-Co.-Ltd_-1.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"\u5d4c\u5165 Control &amp; Instrumentation Cable Specification _ Anhui Feichun Special Cable Co., Ltd_\"><\/object><a id=\"wp-block-file--media-a5ef8f7e-93ef-4fcf-88e3-55a36261f6ac\" href=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/Control-Instrumentation-Cable-Specification-_-Anhui-Feichun-Special-Cable-Co.-Ltd_-1.pdf\">Control &amp; Instrumentation Cable Specification _ Anhui Feichun Special Cable Co., Ltd_<\/a><a href=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/Control-Instrumentation-Cable-Specification-_-Anhui-Feichun-Special-Cable-Co.-Ltd_-1.pdf\" class=\"wp-block-file__button wp-element-button\" aria-describedby=\"wp-block-file--media-a5ef8f7e-93ef-4fcf-88e3-55a36261f6ac\" download>\u4e0b\u8f7d<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"BS 7870-4.10 TRIPLEX cable represents a specialized category of medium voltage power distribution cables designed specifically for utility and industrial applications. According to the British Standards Institution, BS 7870-4.10 specifies requirements for distribution cables with extruded insulation rated from 11 kV to 33 kV. The TRIPLEX formation consists of three single-core cables laid together, providing a more efficient installation solution compared to individually pulled single-core cables.","protected":false},"author":1,"featured_media":2702,"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":[1,9563,9679],"tags":[4528,9689,9691,9683,9686,9696,9716,1822,9719,3229,9705,1540,9712,9680,9681,9728,9687,9700,4427,9707,1345,9699,1847,9710,1791,5685,9717,5200,9701,1001,9724,9575,2368,4237,1057,9694,9725,9685,9711,1145,4471,9698,9706,9709,9721,3826,9703,579,9714,9722,618,1106,1812,3082,9708,816,99,9684,149,7740,9688,9726,4579,1005,1084,9723,9697,9692,9713,1254,9704,9718,9690,9682,9695,9702,9720,1789,9693,9715,9727,9641,9649],"class_list":["post-2701","post","type-post","status-publish","format-standard","has-post-thumbnail","category-uncategorized","category-medium-voltage-cable","category-xlpe-cable","tag-11kv-cable","tag-12-7-22kv-cable","tag-19-33kv-cable","tag-22kv-cable","tag-33kv-cable","tag-6-35-11kv-cable","tag-90-degree-xlpe","tag-aluminum-conductor-cable","tag-ampacity-table","tag-anhui-feichun-cable","tag-bending-radius-cable","tag-british-standard-cable","tag-bs-7870-1-cable","tag-bs-7870-4-10","tag-bs-7870-4-10-triplex","tag-bs-8512-cable-handling","tag-bs-en-60228","tag-buried-cable-duct","tag-cable-condition-monitoring","tag-cable-fault-location","tag-cable-installation-best-practices","tag-cable-jointing","tag-cable-pulling-tension","tag-cable-sizing","tag-cable-temperature-rating","tag-cable-termination","tag-cable-thermal-performance","tag-chinese-cable-manufacturer","tag-class-2-aluminum-conductor","tag-copper-conductor-cable","tag-copper-equalising-tape","tag-copper-wire-screen","tag-crane-power-cable","tag-current-carrying-capacity","tag-direct-burial-cable","tag-distribution-cable","tag-distribution-network-cable","tag-dno-cable","tag-dno-specification-cable","tag-earthing-cable","tag-emergency-overload-rating","tag-emi-screening-cable","tag-esqcr-compliant-cable","tag-export-cable","tag-extruded-insulation-cable","tag-feichun-special-cable","tag-grid-connection-cable","tag-hd-620-s2","tag-heat-shrink-joint","tag-idno-cable","tag-iec-60502-2","tag-industrial-power-cable","tag-insulation-resistance-testing","tag-international-standard-cable","tag-longitudinal-water-blocking","tag-low-smoke-zero-halogen-cable","tag-lszh-cable","tag-mdpe-sheath-cable","tag-medium-voltage-cable","tag-medium-voltage-installation","tag-metallic-screen-cable","tag-mining-distribution-cable","tag-partial-discharge-testing","tag-power-distribution-cable","tag-renewable-energy-cable","tag-short-circuit-rating","tag-single-core-triplex","tag-solar-farm-cable","tag-sub-main-distribution","tag-substation-cable","tag-tan-delta-testing","tag-three-core-cable","tag-three-phase-power-cable","tag-triplex-cable","tag-triplex-formation-cable","tag-uk-dno-cable","tag-underground-cable-installation","tag-underground-power-cable","tag-utility-distribution-cable","tag-water-blocking-cable-2","tag-western-power-distribution-cable","tag-wind-farm-cable","tag-xlpe-insulation-cable","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/2701","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=2701"}],"version-history":[{"count":4,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/2701\/revisions"}],"predecessor-version":[{"id":2708,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/2701\/revisions\/2708"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/2702"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=2701"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=2701"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=2701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}