What is BS 6622 XLPE AWA\/SWA PVC Cable? | Anhui Feichun Special Cable Co., Ltd.<\/title>\n <style>\n :root {\n --bg-primary: #0d1117;\n --bg-secondary: #161b22;\n --bg-tertiary: #21262d;\n --text-primary: #e6edf3;\n --text-secondary: #8b949e;\n --accent-primary: #58a6ff;\n --accent-secondary: #1f6feb;\n --border-color: #30363d;\n --success-color: #3fb950;\n --warning-color: #d29922;\n --table-header: #1c2128;\n }\n \n * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n \n body {\n font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;\n background-color: var(--bg-primary);\n color: var(--text-primary);\n line-height: 1.7;\n font-size: 16px;\n }\n \n .container {\n max-width: 1100px;\n margin: 0 auto;\n padding: 0 24px;\n }\n \n header {\n background-color: var(--bg-secondary);\n border-bottom: 1px solid var(--border-color);\n padding: 16px 0;\n position: sticky;\n top: 0;\n z-index: 100;\n }\n \n .header-content {\n display: flex;\n 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{\n color: var(--accent-primary);\n }\n \n .copyright {\n text-align: center;\n margin-top: 32px;\n padding-top: 24px;\n border-top: 1px solid var(--border-color);\n color: var(--text-secondary);\n font-size: 0.875rem;\n }\n \n @media (max-width: 768px) {\n article {\n padding: 24px;\n }\n \n h1 {\n font-size: 1.75rem;\n }\n \n h2 {\n font-size: 1.25rem;\n }\n \n table {\n font-size: 0.8125rem;\n }\n \n th, td {\n padding: 10px 12px;\n }\n \n .cta-section {\n padding: 28px;\n }\n }\n <\/style>\n <script type=\"application\/ld+json\">\n {\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"Article\",\n \"headline\": \"What is BS 6622 XLPE AWA\/SWA PVC Cable? Complete Technical Guide\",\n \"author\": {\n \"@type\": \"Organization\",\n \"name\": \"Anhui Feichun Special Cable Co., Ltd.\",\n \"url\": \"https:\/\/www.feichuncables.com\"\n },\n \"publisher\": {\n \"@type\": \"Organization\",\n \"name\": \"Anhui Feichun Special Cable Co., Ltd.\"\n },\n \"description\": \"Comprehensive technical guide to BS 6622 medium voltage cables with XLPE insulation and AWA\/SWA armouring for power distribution applications.\",\n \"datePublished\": \"2024-12-05\",\n \"dateModified\": \"2024-12-05\"\n }\n <\/script>\n<\/head>\n<body>\n <header>\n <div class=\"container\">\n <div class=\"header-content\">\n <a href=\"https:\/\/www.feichuncables.com\" class=\"logo\" rel=\"dofollow\">\n Anhui Feichun Special Cable <span>\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8<\/span>\n <\/a>\n <div class=\"contact-bar\">\n <a href=\"mailto:tech@feichuncables.com\">tech@feichuncables.com<\/a>\n <a href=\"mailto:zihao.yang@feichuncable.com\">zihao.yang@feichuncable.com<\/a>\n <a href=\"mailto:ziyu.huang@feichuncables.com\">ziyu.huang@feichuncables.com<\/a>\n <a href=\"https:\/\/wa.me\/8613855123218\" class=\"whatsapp-link\" target=\"_blank\" rel=\"noopener\">WhatsApp: +86 138 5512 3218<\/a>\n <\/div>\n <\/div>\n <\/div>\n <\/header>\n\n <main>\n <div class=\"container\">\n <article>\n <h1>What is BS 6622 XLPE AWA\/SWA PVC Cable?<\/h1>\n <p class=\"subtitle\">A comprehensive technical guide to British Standard medium voltage armoured power cables for underground and industrial power distribution applications.<\/p>\n \n <div class=\"meta-info\">\n <span>Published: December 2024<\/span>\n <span>Category: Medium Voltage Cables<\/span>\n <span>Standard: BS 6622<\/span>\n <\/div>\n\n <h2>1. Introduction and Purpose<\/h2>\n <p>BS 6622 cables represent the British Standard specification for armoured power cables with thermosetting insulation, designed for medium voltage power distribution applications. These cables serve as the critical infrastructure backbone for transmitting electrical power in industrial, commercial, and utility installations where reliable performance under demanding conditions is essential.<\/p>\n \n <p>The primary purpose of BS 6622 XLPE AWA\/SWA PVC cables is to provide mechanically protected power transmission for fixed installations, including underground networks, direct burial applications, cable ducting systems, and industrial power distribution infrastructure. According to industry specifications, these cables are manufactured for rated voltages ranging from 3.8\/6.6 kV (7.2 kV) to 19\/33 kV (36 kV), making them suitable for medium voltage distribution networks worldwide.<\/p>\n\n <div class=\"highlight-box\">\n <p><strong>Key Standard Reference:<\/strong> BS 6622:2007 specifies requirements and test methods for the construction, dimensions, and mechanical and electrical properties of armoured cables with thermosetting insulation, designed for a maximum continuous conductor operating temperature of 90\u00b0C and a maximum short circuit conductor temperature of 250\u00b0C.<\/p>\n <\/div>\n\n <h2>2. Voltage Ratings and Classifications<\/h2>\n <p>BS 6622 cables are manufactured across a standardised range of voltage ratings to accommodate various power distribution requirements. The voltage designation system uses the format Uo\/U (Um), where Uo represents the rated power-frequency voltage between conductor and earth, U represents the rated power-frequency voltage between conductors, and Um represents the maximum system voltage.<\/p>\n\n <table>\n <thead>\n <tr>\n <th>Voltage Rating Uo\/U (Um)<\/th>\n <th>System Voltage Class<\/th>\n <th>Typical Applications<\/th>\n <th>Traditional Sheath Colour<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td class=\"spec-value\">3.8\/6.6 kV (7.2 kV)<\/td>\n <td>6.6 kV Class<\/td>\n <td>Industrial plants, commercial buildings<\/td>\n <td>Red or Black<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">6.35\/11 kV (12 kV)<\/td>\n <td>11 kV Class<\/td>\n <td>Primary distribution networks, substations<\/td>\n <td>Red<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">8.7\/15 kV (17.5 kV)<\/td>\n <td>15 kV Class<\/td>\n <td>Regional distribution, industrial complexes<\/td>\n <td>Black<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">12.7\/22 kV (24 kV)<\/td>\n <td>22 kV Class<\/td>\n <td>Urban distribution, infrastructure projects<\/td>\n <td>Black<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">19\/33 kV (36 kV)<\/td>\n <td>33 kV Class<\/td>\n <td>High-capacity distribution, renewable energy<\/td>\n <td>Black<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h2>3. Material Structure and Construction<\/h2>\n <p>The construction of BS 6622 cables follows a precisely engineered layer structure, with each component serving specific electrical, mechanical, or protective functions. Understanding this construction is essential for proper specification and installation.<\/p>\n\n <div class=\"cable-structure\">\n <div class=\"structure-item\">\n <h4>Conductor<\/h4>\n <p>Class 2 stranded copper or aluminium conductors conforming to EN 60228. Provides excellent conductivity with cross-sectional areas typically ranging from 35mm\u00b2 to 1000mm\u00b2.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Conductor Screen<\/h4>\n <p>Semi-conductive XLPE layer applied via triple extrusion process. Ensures smooth electric field distribution and prevents partial discharge at conductor surface.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Insulation (XLPE)<\/h4>\n <p>Cross-linked polyethylene insulation provides high dielectric strength and thermal stability. Operating temperature: 90\u00b0C continuous, 250\u00b0C short circuit.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Insulation Screen<\/h4>\n <p>Semi-conductive XLPE layer ensuring uniform electric field distribution. Facilitates smooth transition across component layers.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Metallic Screen<\/h4>\n <p>Copper tape or wire screen providing electromagnetic interference (EMI) shielding and earth fault current path. Approximately 90% coverage.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Inner Sheath (Bedding)<\/h4>\n <p>PVC material acting as bedding layer for armour. Prevents mechanical damage to underlying layers from armour wire tension.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Armour (AWA\/SWA)<\/h4>\n <p>Mechanical protection: AWA (aluminium wire armour) for single core cables; SWA (steel wire armour) for multicore cables. Provides approximately 90% coverage.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Outer Sheath (PVC)<\/h4>\n <p>Polyvinyl Chloride outer sheath providing environmental protection. CPR compliant, flame retardant, and UV resistant.<\/p>\n <\/div>\n <\/div>\n\n <h3>3.1 Armour Selection: AWA vs SWA<\/h3>\n <p>The choice between aluminium wire armour (AWA) and steel wire armour (SWA) is technically mandated based on core configuration, not merely a preference consideration.<\/p>\n\n <table>\n <thead>\n <tr>\n <th>Parameter<\/th>\n <th>AWA (Aluminium Wire Armour)<\/th>\n <th>SWA (Steel Wire Armour)<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td><strong>Core Configuration<\/strong><\/td>\n <td class=\"spec-value\">Single core cables only<\/td>\n <td class=\"spec-value\">Multicore cables (3-core typical)<\/td>\n <\/tr>\n <tr>\n <td><strong>Magnetic Properties<\/strong><\/td>\n <td>Non-magnetic (essential requirement)<\/td>\n <td>Magnetic (acceptable for balanced loads)<\/td>\n <\/tr>\n <tr>\n <td><strong>Reason for Selection<\/strong><\/td>\n <td>Prevents induced currents from magnetic field<\/td>\n <td>Cost-effective, high mechanical strength<\/td>\n <\/tr>\n <tr>\n <td><strong>Weight Comparison<\/strong><\/td>\n <td>Approximately 65% lighter<\/td>\n <td>Heavier but more robust<\/td>\n <\/tr>\n <tr>\n <td><strong>Corrosion Resistance<\/strong><\/td>\n <td>Natural oxide layer protection<\/td>\n <td>Requires galvanisation<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <div class=\"warning-box\">\n <h4>\u26a0 Critical Engineering Note<\/h4>\n <p>Single core cables must use aluminium wire armour (AWA) rather than steel. The current flowing through a single core cable produces a magnetic field that would induce electrical currents in ferromagnetic steel armour, potentially causing overheating and cable failure. Aluminium’s non-magnetic properties eliminate this hazard.<\/p>\n <\/div>\n\n <h2>4. Technical Specifications and Parameters<\/h2>\n\n <h3>4.1 Electrical Parameters<\/h3>\n <table>\n <thead>\n <tr>\n <th>Parameter<\/th>\n <th>Specification<\/th>\n <th>Standard Reference<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Voltage Rating Range<\/td>\n <td class=\"spec-value\">3.8\/6.6 kV to 19\/33 kV<\/td>\n <td>BS 6622<\/td>\n <\/tr>\n <tr>\n <td>Insulation Resistance<\/td>\n <td class=\"spec-value\">\u226520 M\u03a9\u00b7km at 20\u00b0C<\/td>\n <td>IEC 60502-2<\/td>\n <\/tr>\n <tr>\n <td>Conductor Resistance (Copper)<\/td>\n <td class=\"spec-value\">Per EN 60228 Class 2<\/td>\n <td>EN 60228<\/td>\n <\/tr>\n <tr>\n <td>Dielectric Loss Factor (tan \u03b4)<\/td>\n <td class=\"spec-value\">\u22640.004 at 20\u00b0C<\/td>\n <td>BS 6622<\/td>\n <\/tr>\n <tr>\n <td>Partial Discharge<\/td>\n <td class=\"spec-value\">\u22645 pC at 1.5 Uo<\/td>\n <td>IEC 60502-2<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h3>4.2 Thermal Parameters<\/h3>\n <table>\n <thead>\n <tr>\n <th>Operating Condition<\/th>\n <th>Temperature<\/th>\n <th>Duration\/Notes<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Maximum Continuous Operating<\/td>\n <td class=\"spec-value\">90\u00b0C<\/td>\n <td>Conductor temperature<\/td>\n <\/tr>\n <tr>\n <td>Short Circuit Temperature<\/td>\n <td class=\"spec-value\">250\u00b0C<\/td>\n <td>Maximum 5 seconds duration<\/td>\n <\/tr>\n <tr>\n <td>Minimum Installation Temperature<\/td>\n <td class=\"spec-value\">-5\u00b0C (PVC sheath)<\/td>\n <td>Without preheating<\/td>\n <\/tr>\n <tr>\n <td>Minimum Installation Temperature<\/td>\n <td class=\"spec-value\">-20\u00b0C (PE sheath)<\/td>\n <td>Enhanced cold flexibility<\/td>\n <\/tr>\n <tr>\n <td>Operating Temperature Range<\/td>\n <td class=\"spec-value\">-15\u00b0C to +90\u00b0C<\/td>\n <td>Continuous service<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h3>4.3 Mechanical Parameters<\/h3>\n <table>\n <thead>\n <tr>\n <th>Parameter<\/th>\n <th>Single Core Cable<\/th>\n <th>Three Core Cable<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Minimum Bending Radius (Fixed)<\/td>\n <td class=\"spec-value\">15 \u00d7 OD<\/td>\n <td class=\"spec-value\">12 \u00d7 OD<\/td>\n <\/tr>\n <tr>\n <td>Bending Radius (Adjacent to Termination)<\/td>\n <td class=\"spec-value\">12 \u00d7 OD<\/td>\n <td class=\"spec-value\">10 \u00d7 OD<\/td>\n <\/tr>\n <tr>\n <td>Armour Coverage<\/td>\n <td class=\"spec-value\">\u224890%<\/td>\n <td class=\"spec-value\">\u224890%<\/td>\n <\/tr>\n <tr>\n <td>Maximum Pulling Tension<\/td>\n <td colspan=\"2\">50 N\/mm\u00b2 on conductor cross-section<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h3>4.4 Current Carrying Capacity Reference (6.35\/11kV, Copper Conductor)<\/h3>\n <table>\n <thead>\n <tr>\n <th>Cross-Section (mm\u00b2)<\/th>\n <th>In Ground (Trefoil) A<\/th>\n <th>In Ground (Flat) A<\/th>\n <th>In Air (Trefoil) A<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>50<\/td>\n <td class=\"spec-value\">165<\/td>\n <td class=\"spec-value\">175<\/td>\n <td class=\"spec-value\">205<\/td>\n <\/tr>\n <tr>\n <td>95<\/td>\n <td class=\"spec-value\">245<\/td>\n <td class=\"spec-value\">265<\/td>\n <td class=\"spec-value\">305<\/td>\n <\/tr>\n <tr>\n <td>185<\/td>\n <td class=\"spec-value\">370<\/td>\n <td class=\"spec-value\">405<\/td>\n <td class=\"spec-value\">475<\/td>\n <\/tr>\n <tr>\n <td>300<\/td>\n <td class=\"spec-value\">480<\/td>\n <td class=\"spec-value\">530<\/td>\n <td class=\"spec-value\">620<\/td>\n <\/tr>\n <tr>\n <td>500<\/td>\n <td class=\"spec-value\">615<\/td>\n <td class=\"spec-value\">680<\/td>\n <td class=\"spec-value\">800<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <p><em>Reference conditions: Ground temperature 20\u00b0C, ambient air 30\u00b0C, soil thermal resistivity 1.5 K\u00b7m\/W, burial depth 0.8m.<\/em><\/p>\n\n <h2>5. Standards Compliance and Certifications<\/h2>\n <p>BS 6622 cables are manufactured to comply with multiple international and regional standards, ensuring quality, safety, and interoperability across global markets.<\/p>\n\n <table>\n <thead>\n <tr>\n <th>Standard<\/th>\n <th>Description<\/th>\n <th>Application<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td class=\"spec-value\">BS 6622:2007<\/td>\n <td>Primary British Standard for armoured MV cables<\/td>\n <td>Cable construction, testing requirements<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">IEC 60502-2<\/td>\n <td>International standard for MV cables 6kV-30kV<\/td>\n <td>Type testing, routine testing<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">EN 60228<\/td>\n <td>Conductor specifications<\/td>\n <td>Class 2 stranded conductors<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">BS EN 60332-1-2<\/td>\n <td>Flame retardancy testing<\/td>\n <td>Single cable vertical flame test<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">CPR (EU 305\/2011)<\/td>\n <td>Construction Products Regulation<\/td>\n <td>Fire performance classification<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">BS 7835<\/td>\n <td>LSZH variant specification<\/td>\n <td>Low smoke zero halogen cables<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h2>6. Installation and Application Guidelines<\/h2>\n \n <h3>6.1 Suitable Installation Methods<\/h3>\n <p>BS 6622 cables are engineered for versatile installation across multiple environments and methods:<\/p>\n \n <div class=\"cable-structure\">\n <div class=\"structure-item\">\n <h4>Direct Burial<\/h4>\n <p>Armour protection enables direct ground burial without additional mechanical protection. Standard burial depth: 0.8m minimum.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Cable Ducting<\/h4>\n <p>Suitable for installation in underground cable ducts and conduits. MDPE sheath variant preferred for duct applications.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Cable Tray Installation<\/h4>\n <p>Industrial applications with cable tray systems. Consider spacing requirements for thermal de-rating.<\/p>\n <\/div>\n <div class=\"structure-item\">\n <h4>Indoor Installation<\/h4>\n <p>Power stations, switchboards, commercial buildings. CPR compliance required for EU installations.<\/p>\n <\/div>\n <\/div>\n\n <h3>6.2 Primary Application Sectors<\/h3>\n <p>These cables serve critical roles across numerous industries. Industry leaders in <a href=\"https:\/\/www.reelingcable.com\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">industrial reeling applications<\/a> recognise the importance of proper cable specification for demanding environments. Similarly, specialists in <a href=\"https:\/\/www.amplexmining.com.au\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">mining cable applications<\/a> understand that cable selection directly impacts operational safety and efficiency.<\/p>\n\n <table>\n <thead>\n <tr>\n <th>Application Sector<\/th>\n <th>Typical Use Cases<\/th>\n <th>Key Requirements<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td><strong>Utility Power Distribution<\/strong><\/td>\n <td>Substation feeders, primary distribution networks<\/td>\n <td>High reliability, long service life<\/td>\n <\/tr>\n <tr>\n <td><strong>Industrial Complexes<\/strong><\/td>\n <td>Factory power supply, process equipment<\/td>\n <td>Mechanical protection, chemical resistance<\/td>\n <\/tr>\n <tr>\n <td><strong>Renewable Energy<\/strong><\/td>\n <td>Wind farm collection networks, solar plant interconnection<\/td>\n <td>UV resistance, direct burial capability<\/td>\n <\/tr>\n <tr>\n <td><strong>Infrastructure Projects<\/strong><\/td>\n <td>Railways, airports, ports, highways<\/td>\n <td>Long-term durability, maintenance access<\/td>\n <\/tr>\n <tr>\n <td><strong>Commercial Buildings<\/strong><\/td>\n <td>High-rise power distribution, data centres<\/td>\n <td>Fire performance, space efficiency<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <p>For applications involving <a href=\"https:\/\/www.cranecable.com\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">port crane and maritime installations<\/a>, proper cable specification ensures reliable operation in harsh coastal environments. Additionally, resources from <a href=\"https:\/\/www.miningcable.cl\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">South American mining cable specialists<\/a> provide valuable insights into demanding extraction industry requirements.<\/p>\n\n <h2>7. Safety Thresholds and Critical Parameters<\/h2>\n \n <div class=\"warning-box\">\n <h4>\u26a0 Critical Safety Thresholds<\/h4>\n <p>Exceeding these parameters may result in cable damage, system failure, or safety hazards. All installations must be designed with appropriate safety margins.<\/p>\n <\/div>\n\n <table>\n <thead>\n <tr>\n <th>Parameter<\/th>\n <th>Maximum Safe Value<\/th>\n <th>Consequence of Exceeding<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Conductor Temperature (Continuous)<\/td>\n <td class=\"spec-value\">90\u00b0C<\/td>\n <td>Accelerated insulation ageing, reduced lifespan<\/td>\n <\/tr>\n <tr>\n <td>Short Circuit Temperature<\/td>\n <td class=\"spec-value\">250\u00b0C (max 5 sec)<\/td>\n <td>Insulation damage, potential fire hazard<\/td>\n <\/tr>\n <tr>\n <td>Minimum Bending Radius<\/td>\n <td class=\"spec-value\">12-15 \u00d7 OD<\/td>\n <td>Conductor damage, insulation cracking<\/td>\n <\/tr>\n <tr>\n <td>Maximum Installation Temperature<\/td>\n <td class=\"spec-value\">60\u00b0C<\/td>\n <td>Mechanical stress, installation damage<\/td>\n <\/tr>\n <tr>\n <td>Sidewall Pressure (Installation)<\/td>\n <td class=\"spec-value\">7300 N\/m radius<\/td>\n <td>Jacket crushing, conductor deformation<\/td>\n <\/tr>\n <tr>\n <td>Maximum Pulling Tension<\/td>\n <td class=\"spec-value\">50 N\/mm\u00b2<\/td>\n <td>Conductor elongation, armour damage<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h3>7.1 De-rating Factors<\/h3>\n <p>Current carrying capacity must be adjusted based on installation conditions:<\/p>\n\n <table>\n <thead>\n <tr>\n <th>Condition<\/th>\n <th>De-rating Factor<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Ambient Air Temperature 40\u00b0C<\/td>\n <td class=\"spec-value\">0.88<\/td>\n <\/tr>\n <tr>\n <td>Ambient Air Temperature 50\u00b0C<\/td>\n <td class=\"spec-value\">0.78<\/td>\n <\/tr>\n <tr>\n <td>Ground Temperature 30\u00b0C<\/td>\n <td class=\"spec-value\">0.96<\/td>\n <\/tr>\n <tr>\n <td>Ground Temperature 40\u00b0C<\/td>\n <td class=\"spec-value\">0.87<\/td>\n <\/tr>\n <tr>\n <td>Soil Thermal Resistivity 2.5 K\u00b7m\/W<\/td>\n <td class=\"spec-value\">0.83<\/td>\n <\/tr>\n <tr>\n <td>Two Circuits Touching<\/td>\n <td class=\"spec-value\">0.80<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h2>8. Installation Precautions and Best Practices<\/h2>\n\n <div class=\"success-box\">\n <h4>\u2713 Pre-Installation Requirements<\/h4>\n <p>Verify cable integrity before installation. Conduct insulation resistance testing and visual inspection for any transport damage. Ensure ambient temperature is within installation limits.<\/p>\n <\/div>\n\n <h3>8.1 Handling and Storage<\/h3>\n <p>Proper cable handling is essential to prevent installation damage and ensure long-term reliability:<\/p>\n <p>Store cable drums on firm, level ground. Protect from direct sunlight, moisture ingress, and mechanical damage. Maintain storage temperature between -25\u00b0C and +50\u00b0C. Rotate drums periodically during extended storage periods exceeding six months.<\/p>\n\n <h3>8.2 Installation Requirements<\/h3>\n <p>Follow these critical installation parameters to ensure safe, compliant installations:<\/p>\n <p>Observe minimum bending radius requirements at all times during installation. Use appropriate pulling equipment with dynamometer to monitor tension. Apply cable pulling lubricant for conduit installations to reduce sidewall pressure. Install cable markers and route identification at regular intervals per local regulations.<\/p>\n\n <h3>8.3 Jointing and Termination<\/h3>\n <p>Use only approved accessories designed for BS 6622 cables. Ensure all joints and terminations are performed by qualified personnel following manufacturer instructions. Test completed joints for insulation resistance before energisation. Document all jointing activities with location, date, and personnel records.<\/p>\n\n <div class=\"warning-box\">\n <h4>\u26a0 UV Exposure Notice<\/h4>\n <p>PVC outer sheaths may experience colour fading when exposed to prolonged ultraviolet radiation. While this does not affect electrical performance, consider MDPE sheath variants for applications with significant outdoor exposure, or apply additional UV protection measures.<\/p>\n <\/div>\n\n <h2>9. Common Variants and Alternatives<\/h2>\n\n <table>\n <thead>\n <tr>\n <th>Variant<\/th>\n <th>Standard<\/th>\n <th>Key Difference<\/th>\n <th>Application<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td class=\"spec-value\">BS 7835 LSZH<\/td>\n <td>BS 7835<\/td>\n <td>Low Smoke Zero Halogen sheath<\/td>\n <td>Tunnels, enclosed spaces, public buildings<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">MDPE Sheath<\/td>\n <td>BS 6622<\/td>\n <td>Medium Density Polyethylene outer sheath<\/td>\n <td>Enhanced UV resistance, ducting<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">Aluminium Conductor<\/td>\n <td>BS 6622<\/td>\n <td>AL conductors per EN 60228<\/td>\n <td>Cost-sensitive installations, weight reduction<\/td>\n <\/tr>\n <tr>\n <td class=\"spec-value\">Triplex Formation<\/td>\n <td>BS 6622<\/td>\n <td>Three single cores twisted together<\/td>\n <td>Large cross-sections, flexible routing<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h2>10. Frequently Asked Questions<\/h2>\n\n <div class=\"faq-section\">\n <div class=\"faq-item\">\n <div class=\"faq-question\">Q: Why must single core cables use aluminium wire armour (AWA) instead of steel wire armour (SWA)?<\/div>\n <div class=\"faq-answer\">Single core cables carry unbalanced current that creates a rotating magnetic field around the conductor. Steel wire armour is ferromagnetic, meaning this magnetic field would induce circulating currents in the steel wires. These induced currents cause significant heating that can damage the cable and reduce its current carrying capacity. Aluminium is non-magnetic, so no currents are induced, making AWA essential for single core applications.<\/div>\n <\/div>\n\n <div class=\"faq-item\">\n <div class=\"faq-question\">Q: What is the maximum operating temperature for BS 6622 XLPE insulated cables?<\/div>\n <div class=\"faq-answer\">The maximum continuous conductor operating temperature is 90\u00b0C. During short circuit conditions, the cable can withstand temperatures up to 250\u00b0C for a maximum duration of 5 seconds. Exceeding these temperatures can cause irreversible insulation damage and significantly reduce cable service life.<\/div>\n <\/div>\n\n <div class=\"faq-item\">\n <div class=\"faq-question\">Q: Can BS 6622 cables be directly buried without additional protection?<\/div>\n <div class=\"faq-answer\">Yes, the armour layer (AWA or SWA) provides sufficient mechanical protection for direct burial applications. Standard burial depth is 0.8 metres minimum. However, cable route markers should be installed, and consideration given to soil conditions, nearby structures, and future excavation likelihood.<\/div>\n <\/div>\n\n <div class=\"faq-item\">\n <div class=\"faq-question\">Q: What is the difference between BS 6622 and BS 7835 cables?<\/div>\n <div class=\"faq-answer\">Both standards cover armoured medium voltage cables with similar electrical performance. The primary difference is the sheathing material: BS 6622 specifies PVC or PE sheaths, while BS 7835 requires Low Smoke Zero Halogen (LSZH) materials. BS 7835 cables are specified for installations where fire safety is critical, such as tunnels, metro systems, and enclosed public spaces.<\/div>\n <\/div>\n\n <div class=\"faq-item\">\n <div class=\"faq-question\">Q: What testing is required for BS 6622 cables?<\/div>\n <div class=\"faq-answer\">BS 6622 specifies both routine tests (performed on all manufactured lengths) and type tests (performed on representative samples). Routine tests include conductor resistance, voltage tests, and partial discharge measurement. Type tests include thermal stability, impulse voltage, and mechanical performance assessments.<\/div>\n <\/div>\n\n <div class=\"faq-item\">\n <div class=\"faq-question\">Q: How do I select between copper and aluminium conductors?<\/div>\n <div class=\"faq-answer\">Copper conductors offer higher conductivity (smaller diameter for equivalent current capacity), better mechanical properties, and easier jointing. Aluminium conductors are lighter (approximately 50% weight reduction) and more economical. For installations with limited space or high-current requirements, copper is typically preferred. For cost-sensitive applications with adequate space, aluminium provides an effective alternative.<\/div>\n <\/div>\n <\/div>\n\n <div class=\"cta-section\">\n <h3>Request Technical Support or Quotation<\/h3>\n <p>Our engineering team at Anhui Feichun Special Cable Co., Ltd. provides expert guidance on BS 6622 cable specification, custom manufacturing, and technical support for your medium voltage projects.<\/p>\n <div class=\"cta-buttons\">\n <a href=\"mailto:tech@feichuncables.com\" class=\"cta-button cta-button-primary\">Contact Technical Team<\/a>\n <a href=\"https:\/\/wa.me\/8613855123218\" class=\"cta-button cta-button-secondary\" target=\"_blank\" rel=\"noopener\">WhatsApp Enquiry<\/a>\n <\/div>\n <\/div>\n\n <div class=\"references\">\n <h3>References and Further Resources<\/h3>\n <p>This technical guide references information from multiple authoritative industry sources. For further information on specific applications:<\/p>\n <p>For port and maritime cable applications: <a href=\"https:\/\/www.cranecable.com\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">Crane Cable Solutions<\/a><\/p>\n <p>For mining industry cable specifications: <a href=\"https:\/\/www.amplexmining.com.au\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">Australian Mining Cable Standards<\/a><\/p>\n <p>For reeling and festoon cable systems: <a href=\"https:\/\/www.reelingcable.com\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">Industrial Reeling Cable Guide<\/a><\/p>\n <p>For South American mining applications: <a href=\"https:\/\/www.miningcable.cl\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">Chile Mining Cable Resources<\/a><\/p>\n <p>For additional Feichun product information: <a href=\"https:\/\/www.feichuncable.com\/\" class=\"external-link\" rel=\"dofollow noopener\" target=\"_blank\">Feichun Cable Main Site<\/a><\/p>\n <p>External standard references: <a href=\"https:\/\/www.bsigroup.com\/\" class=\"external-link\" rel=\"nofollow noopener\" target=\"_blank\">British Standards Institution<\/a>, <a href=\"https:\/\/www.iec.ch\/\" class=\"external-link\" rel=\"nofollow noopener\" target=\"_blank\">International Electrotechnical Commission<\/a><\/p>\n <p>Industry cable suppliers: <a href=\"https:\/\/www.elandcables.com\/\" class=\"external-link\" rel=\"nofollow noopener\" target=\"_blank\">Eland Cables<\/a>, <a href=\"https:\/\/www.clevelandcable.com\/\" class=\"external-link\" rel=\"nofollow noopener\" target=\"_blank\">Cleveland Cable Company<\/a><\/p>\n <\/div>\n\n <\/article>\n <\/div>\n <\/main>\n\n <footer>\n <div class=\"container\">\n <div class=\"footer-content\">\n <div class=\"footer-section\">\n <h4>Anhui Feichun Special Cable Co., Ltd.<\/h4>\n <p>\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8<\/p>\n <p>Professional manufacturer of medium voltage power cables, mining cables, and industrial specialty cables.<\/p>\n <\/div>\n <div class=\"footer-section\">\n <h4>Contact Information<\/h4>\n <a href=\"mailto:tech@feichuncables.com\">tech@feichuncables.com<\/a>\n <a href=\"mailto:zihao.yang@feichuncable.com\">zihao.yang@feichuncable.com<\/a>\n <a href=\"mailto:ziyu.huang@feichuncables.com\">ziyu.huang@feichuncables.com<\/a>\n <a href=\"https:\/\/wa.me\/8613855123218\" target=\"_blank\" rel=\"noopener\">WhatsApp: +86 138 5512 3218<\/a>\n <\/div>\n <div class=\"footer-section\">\n <h4>Related Resources<\/h4>\n <a href=\"https:\/\/www.feichuncable.com\/\" rel=\"dofollow noopener\" target=\"_blank\">Feichun Cable Products<\/a>\n <a href=\"https:\/\/www.reelingcable.com\/\" rel=\"dofollow noopener\" target=\"_blank\">Reeling Cable Solutions<\/a>\n <a href=\"https:\/\/www.cranecable.com\/\" rel=\"dofollow noopener\" target=\"_blank\">Crane Cable Applications<\/a>\n <a href=\"https:\/\/www.amplexmining.com.au\/\" rel=\"dofollow noopener\" target=\"_blank\">Mining Cable Specifications<\/a>\n <\/div>\n <\/div>\n <div class=\"copyright\">\n <p>\u00a9 2024 Anhui Feichun Special Cable Co., Ltd. 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{"id":2695,"date":"2025-12-05T14:28:40","date_gmt":"2025-12-05T06:28:40","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=2695"},"modified":"2025-12-05T14:30:52","modified_gmt":"2025-12-05T06:30:52","slug":"what-is-bs-6622-xlpe-awa-swa-pvc-cable","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/what-is-bs-6622-xlpe-awa-swa-pvc-cable\/","title":{"rendered":"What is BS 6622 XLPE AWA\/SWA PVC Cable?"},"content":{"rendered":"\n

Complete Technical Guide<\/p>\n\n\n\n