{"id":25235,"date":"2026-08-04T11:50:10","date_gmt":"2026-08-04T03:50:10","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=25235"},"modified":"2026-08-04T11:50:14","modified_gmt":"2026-08-04T03:50:14","slug":"yxc7vy2v-20-3-35-kv-single-core-xlpe-copper-cable-with-round-aluminium-wire-armour","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/yxc7vy2v-20-3-35-kv-single-core-xlpe-copper-cable-with-round-aluminium-wire-armour\/","title":{"rendered":"YXC7VY2V 20.3\/35 kV \u2014 Single-Core XLPE Copper Cable with Round Aluminium Wire Armour"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n\n\n\n\n\nYXC7VY2V 20.3\/35 kV Cable | Feichun Single-Core XLPE Aluminium Wire Armoured Engineering Guide<\/title>\n<meta name=\"description\" content=\"Full-English engineering guide to the YXC7VY2V 20.3\/35 kV single-core copper-conductor XLPE cable, international designation N2XSYR(AL)Y, copper screen, PVC sheath system and single-layer round aluminium wire armour.\">\n<meta name=\"keywords\" content=\"YXC7VY2V 20.3\/35 kV, N2XSYR(AL)Y, 1x240\/25 mm2, XLPE copper conductor cable, aluminium wire armoured cable, TSEK, Feichun Cable\">\n<style>\n:root{--bg:#041018;--p:#0b202b;--p2:#123443;--ink:#f4f9fb;--muted:#adc4ce;--line:#315b6f;--c:#55dff7;--g:#62df9c;--s:#e8c37b;--r:#ff777f;--v:#aa9bff;--source:#caedff;--d:#b8f0c9}\n*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px Arial,Helvetica,sans-serif;line-height:1.68}.wrap{max-width:1840px;margin:auto;padding:0 28px}a{color:var(--c);text-decoration:none}a:hover{text-decoration:underline}.hero{padding:70px 0;background:radial-gradient(circle at 8% 5%,rgba(85,223,247,.22),transparent 34%),radial-gradient(circle at 92% 8%,rgba(255,119,127,.15),transparent 34%),linear-gradient(135deg,#041018,#0b4056)}h1{font-size:48px;line-height:1.12;max-width:1540px}h2{margin-top:55px;border-left:7px solid var(--c);padding-left:15px;line-height:1.25}h3{color:var(--c)}.lead{font-size:21px;max-width:1540px}.badges,.meta{display:flex;gap:10px;flex-wrap:wrap}.badges span,.meta span{background:#071821;border:1px solid var(--line);border-radius:22px;padding:8px 14px;font-weight:bold}.cards,.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(245px,1fr));gap:15px;margin:22px 0}.card,.box,.note,.warn{background:var(--p);border:1px solid var(--line);border-radius:10px;padding:18px}.card{border-top:5px solid var(--c)}.value{font-size:30px;color:var(--c);font-weight:bold}.note{border-left:7px solid var(--c)}.warn{border-left:7px solid var(--r);margin:13px 0}.toc{background:var(--p);border:1px solid var(--line);padding:20px;border-left:7px solid var(--c)}.toc ol{columns:2}.scroll{overflow:auto}table{width:100%;border-collapse:collapse;background:#071821;min-width:1200px}th,td{border:1px solid var(--line);padding:8px 9px;vertical-align:top}th{background:var(--p2);color:#f4f9fb}td.key{color:var(--c);font-weight:bold}td.source{color:var(--source)}td.derived{color:var(--d);font-weight:bold}code{color:#f0d59e;background:#071821;padding:2px 5px;border-radius:4px}.formula{white-space:pre-line;background:#071821;border:1px solid var(--line);padding:18px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.svg{border:1px solid var(--line);padding:10px;background:#071821;margin:22px 0}.svg svg{width:100%;height:auto;display:block}.small{font-size:12px;color:#91a9b4}.contact{display:grid;grid-template-columns:1fr 1fr;gap:12px}.contact div{background:#071821;border:1px solid var(--line);padding:15px}footer{margin-top:50px;background:#02080c;padding:34px 0}@media(max-width:800px){h1{font-size:31px}.toc ol{columns:1}.contact{grid-template-columns:1fr}}\n<\/style>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"TechArticle\",\"headline\":\"YXC7VY2V 20.3\/35 kV Single-Core XLPE Aluminium Wire Armoured Cable Guide\",\"description\":\"Engineering guide to the YXC7VY2V single-core copper-conductor XLPE cable, N2XSYR(AL)Y international designation, copper screen, PVC sheath and aluminium wire armour.\",\"author\":{\"@type\":\"Organization\",\"name\":\"Feichun Cable\"},\"publisher\":{\"@type\":\"Organization\",\"name\":\"Feichun Cable\"}}<\/script>\n<\/head>\n<body>\n<section class=\"hero\"><div class=\"wrap\"><div class=\"badges\"><span>FEICHUN CABLE<\/span><span>YXC7VY2V 20.3\/35 kV<\/span><span>N2XSYR(AL)Y<\/span><span>1 CORE<\/span><span>Cu \/ XLPE \/ Cu SCREEN \/ PVC<\/span><span>SINGLE ALUMINIUM WIRE ARMOUR<\/span><span>NATIONAL TSEK<\/span><span>IEC 60332-3 CAT. C<\/span><\/div><h1>Feichun YXC7VY2V 20.3\/35 kV \u2014 Single-Core XLPE Copper Cable with Round Aluminium Wire Armour<\/h1><p class=\"lead\">A full-English engineering guide to the supplied YXC7VY2V 20.3\/35 kV record and its printed international designation N2XSYR(AL)Y. The article keeps the national title, product construction, official 1×240\/25 mm\u00b2 row, source dates and project-level calculation boundaries distinct.<\/p><div class=\"meta\"><span>Uo\/U: 20.3 \/ 35 kV<\/span><span>240 mm\u00b2 conductor<\/span><span>25 mm\u00b2 copper screen<\/span><span>53.0 mm nominal OD<\/span><span>4710 kg\/km<\/span><span>12 (xD) laying factor<\/span><span>-20 … 90 \u00b0C<\/span><span>90 \u00b0C service \/ 250 \u00b0C fault<\/span><\/div><\/div><\/section>\n<main class=\"wrap\">\n<div class=\"cards\"><div class=\"card\"><div>Voltage class<\/div><div class=\"value\">20.3\/35 kV<\/div><div>Uo\/U notation supplied by the source.<\/div><\/div><div class=\"card\"><div>Product row<\/div><div class=\"value\">1×240\/25 mm\u00b2<\/div><div>240 mm\u00b2 copper conductor with 25 mm\u00b2 copper screen.<\/div><\/div><div class=\"card\"><div>Armour<\/div><div class=\"value\">SINGLE AL WIRES<\/div><div>Single layer of round aluminium wires under PVC protection.<\/div><\/div><div class=\"card\"><div>Published matrix<\/div><div class=\"value\">53.0 mm \/ 4710 kg\/km<\/div><div>Official product-page dimensions and mass for ref. 10563489.<\/div><\/div><\/div>\n\n<div class=\"toc\"><h3>Contents<\/h3><ol><li>Engineering position<\/li><li>Designation and construction logic<\/li><li>Standard and evidence review<\/li><li>Complete source specification<\/li><li>Technical matrix<\/li><li>Published-data limitations<\/li><li>Derived installation checks<\/li><li>Layer-by-layer cross-section<\/li><li>Electrical, screen and armour system<\/li><li>Thermal, voltage-drop and short-circuit design<\/li><li>Fire and PVC performance boundary<\/li><li>Fixed-route applications<\/li><li>Handling and termination<\/li><li>Selection comparison<\/li><li>Failure mode analysis<\/li><li>Feichun certification scope<\/li><li>Source and revision audit<\/li><\/ol><\/div>\n\n<h2>1. Engineering position: a high-voltage single-core armoured cable with explicit data boundaries<\/h2>\n<div class=\"note\"><b>YXC7VY2V 20.3\/35 kV<\/b> is presented in the supplied record as a single-core XLPE-insulated armoured copper-conductor cable. The same official product PDF prints <b>N2XSYR(AL)Y<\/b> as the international designation. The construction is copper conductor, semiconducting XLPE conductor screen, XLPE insulation, semiconducting XLPE insulation screen, crape tape, concentric copper screen, PVC separation sheath, single-layer round aluminium wire armour and PVC outer sheath.<\/div>\n<div class=\"grid\"><div class=\"box\"><b>Voltage platform<\/b><br>20.3\/35 kV Uo\/U is a high-voltage distribution class. Insulation coordination, test voltage, terminations and joints must be released for the exact project system.<\/div><div class=\"box\"><b>Single-core platform<\/b><br>The product row is one 240 mm\u00b2 cable with one copper screen and one aluminium-wire armour layer. A three-phase circuit arrangement is not the same thing as a three-core cable.<\/div><div class=\"box\"><b>Mechanical platform<\/b><br>Round aluminium wires provide armour against route handling and mechanical exposure. Armour bonding, cleats, pulling loads and minimum-radius instructions remain installation controls.<\/div><div class=\"box\"><b>Evidence platform<\/b><br>The article separates user-supplied family values, official product dimensions and route calculations. A dash is retained as a dash rather than being replaced with a value from another family.<\/div><\/div>\n<div class=\"warn\"><b>Engineering boundary:<\/b> the 12 (xD) value is a laying factor. It does not establish continuous reeling, festoon, drag-chain, torsional or repeated-flex service. The supplied source lists National TSEK; this article does not create an unprovided IEC conformity claim.<\/div>\n\n<h2>2. Designation and construction logic<\/h2>\n<div class=\"scroll\"><table><thead><tr><th>Designation \/ field<\/th><th>Engineering reading<\/th><th>Design consequence<\/th><th>Evidence status<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">YXC7VY2V<\/td><td>National product title shown by the supplied family record.<\/td><td>Keep this title in the purchase schedule and match it to the exact 1×240\/25 mm\u00b2 product row.<\/td><td class=\"source\">Supplied \/ official family record<\/td><\/tr><tr><td class=\"key\">N2XSYR(AL)Y<\/td><td>International designation printed in the official product PDF.<\/td><td>Use the printed designation as a document cross-reference; do not infer additional letter meanings beyond the controlled construction.<\/td><td class=\"source\">Official product PDF<\/td><\/tr><tr><td class=\"key\">20.3\/35 kV<\/td><td>Rated voltage class; the source also prints 20,3\/35 kV with a comma.<\/td><td>Use one consistent notation in the project schedule and accessory selection.<\/td><td class=\"source\">Supplied \/ official record<\/td><\/tr><tr><td class=\"key\">1×240\/25 mm\u00b2<\/td><td>One 240 mm\u00b2 copper conductor and a 25 mm\u00b2 copper screen.<\/td><td>Do not read 25 mm\u00b2 as a second phase conductor or armour cross-section.<\/td><td class=\"source\">Official product row<\/td><\/tr><tr><td class=\"key\">R(AL)<\/td><td>Construction record identifies round aluminium wire armour.<\/td><td>Check aluminium armour treatment, bonding, cleats and earth-fault assumptions separately.<\/td><td class=\"source\">Construction-based reading<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"grid\"><div class=\"box\"><b>Electric-field sequence<\/b><br>Conductor screen, XLPE insulation and insulation screen form the radial dielectric system. The copper metallic screen provides the external reference and bonding interface.<\/div><div class=\"box\"><b>Metallic screen sequence<\/b><br>The source states concentric copper wires plus copper tape and the official product row states 25 mm\u00b2 screen section. The screen fault current remains a separate design input.<\/div><div class=\"box\"><b>Mechanical sequence<\/b><br>PVC separation sheath isolates the screened core from the single layer of round aluminium wires. PVC outer sheath protects the armour and route interface.<\/div><div class=\"box\"><b>Dimensional sequence<\/b><br>53.0 mm is the nominal outer diameter; 18.3 mm is the conductor diameter; 8.5 mm and 2.7 mm are the published insulation and outer-sheath thicknesses.<\/div><\/div>\n\n<h2>3. Standard and evidence review<\/h2>\n<div class=\"scroll\"><table><thead><tr><th>Reference<\/th><th>Role in this article<\/th><th>Engineering interpretation<\/th><th>Boundary<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">National TSEK<\/td><td>Standard printed by the supplied and official family record.<\/td><td>Use the released TSEK certificate, edition and test file for the ordered product.<\/td><td class=\"source\">No edition or certificate number is supplied here.<\/td><\/tr><tr><td class=\"key\">IEC 60332-3 Cat. C<\/td><td>Flame-retardant reference listed by the source.<\/td><td>IEC 60332-3-24:2018 describes Category C vertical flame-spread testing for vertically mounted bunched wires or cables.<\/td><td class=\"source\">The product source gives the standard number without an edition; do not turn it into a CPR class.<\/td><\/tr><tr><td class=\"key\">IEC 60502-2<\/td><td>Related engineering reference only.<\/td><td>The IEC publication covers extruded-insulation cables from 6 kV up to 30 kV for fixed installations.<\/td><td class=\"source\">The YXC7VY2V source lists National TSEK, not IEC 60502-2; no IEC conformity is claimed.<\/td><\/tr><tr><td class=\"key\">PVC material system<\/td><td>PVC separation sheath and PVC outer sheath.<\/td><td>Review smoke, corrosive gas, halogen, fire stopping, oil and local building requirements using the actual product dossier.<\/td><td class=\"source\">No LSZH or halogen-free claim is supplied for this record.<\/td><\/tr><tr><td class=\"key\">Product evidence<\/td><td>Family PDF plus product-specific PDF\/page.<\/td><td>Use the product-specific 1×240\/25 mm\u00b2 values for dimensions, screen section, DCR, ampacity and conductor fault duty.<\/td><td class=\"source\">Do not generalise the row to other sizes.<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"note\"><b>Standards discipline:<\/b> the official IEC references linked below are used to explain engineering boundaries. They do not replace the supplied National TSEK designation or create a Feichun certificate.<\/div>\n\n<h2>4. Complete source specification<\/h2>\n<div class=\"note\"><b>All user-provided fields are preserved below.<\/b> Official product-page values are identified separately where they add a nominal diameter, mass, screen section, resistance, current rating or product identifier. Source dashes remain dashes.<\/div>\n<div class=\"scroll\"><table><thead><tr><th>Specification field<\/th><th>Reference value<\/th><th>Engineering interpretation<\/th><th>Evidence status<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Family title<\/td><td class=\"source\">YXC7VY2V 20.3\/35 kV<\/td><td>The national product title used by the supplied record and official family page.<\/td><td class=\"source\">Supplied \/ official family record<\/td><\/tr><tr><td class=\"key\">International designation<\/td><td class=\"source\">N2XSYR(AL)Y<\/td><td>The product PDF prints this as the international designation. It is retained separately from the YXC7VY2V title.<\/td><td class=\"source\">Official product PDF<\/td><\/tr><tr><td class=\"key\">Product description<\/td><td class=\"source\">20,3\/35 kV XLPE insulated single core armoured cables with copper conductor<\/td><td>Single-core medium-voltage cable with a copper conductor, XLPE insulation, concentric copper screen, aluminium wire armour and PVC outer protection.<\/td><td class=\"source\">Supplied \/ official family PDF<\/td><\/tr><tr><td class=\"key\">Standard<\/td><td class=\"source\">National TSEK<\/td><td>The source lists National TSEK. Do not silently rewrite this product record as IEC 60502-2 without a matching conformity file.<\/td><td class=\"source\">Supplied \/ official family PDF<\/td><\/tr><tr><td class=\"key\">Application<\/td><td class=\"source\">These are cables with low dielectric losses used in energy network with sudden load changes. Laid in residental or industrial areas, underground or in ducts.<\/td><td>Fixed energy-network application in residential or industrial areas, underground routes or ducts; route conditions still require engineering review.<\/td><td class=\"source\">Supplied \/ official family PDF<\/td><\/tr><tr><td class=\"key\">Conductor material<\/td><td class=\"source\">Copper<\/td><td>The phase conductor is copper.<\/td><td class=\"source\">Supplied \/ official product page<\/td><\/tr><tr><td class=\"key\">Conductor flexibility<\/td><td class=\"source\">Class 2<\/td><td>Stranded Class 2 construction is stated in the source.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Type of conductor<\/td><td class=\"source\">Circular, stranded, class 2<\/td><td>The source identifies a circular stranded conductor; the official product page also labels it Circular stranded (RM).<\/td><td class=\"source\">Supplied \/ official product page<\/td><\/tr><tr><td class=\"key\">Number of cores<\/td><td class=\"source\">1<\/td><td>One single-core cable unit; a three-phase circuit may require three separately installed units according to the system design.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Conductor cross-section<\/td><td class=\"source\">240 mm\u00b2<\/td><td>The ordered family\/product row is 1×240\/25 mm\u00b2; the 25 mm\u00b2 is the published metallic screen section, not a second phase conductor.<\/td><td class=\"source\">Supplied \/ official product PDF<\/td><\/tr><tr><td class=\"key\">Rated Voltage Uo\/U (Um)<\/td><td class=\"source\">20.3 \/ 35 kV<\/td><td>Use the exact decimal notation in the project schedule. The source title also uses 20,3\/35 kV comma notation.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Operating temperature, range<\/td><td class=\"source\">-20 … 90 \u00b0C<\/td><td>Usage range stated by the source; ambient, installation, accessory and sheath limits remain project controls.<\/td><td class=\"source\">Supplied \/ official family PDF<\/td><\/tr><tr><td class=\"key\">Short-circuit max. conductor temperature<\/td><td class=\"source\">250 \u00b0C<\/td><td>Use with I\u00b2t, protection clearing time, conductor area, screen design and accessory capability.<\/td><td class=\"source\">Official family PDF \/ product PDF<\/td><\/tr><tr><td class=\"key\">Bending factor when laying<\/td><td class=\"source\">12 (xD)<\/td><td>A laying factor, not a repeated-flex, reeling or energy-chain qualification.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Max. conductor temperature in service<\/td><td class=\"source\">90 \u00b0C<\/td><td>Continuous conductor-temperature limit stated in the source; route ampacity still depends on formation and environment.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Flame retardant<\/td><td class=\"source\">IEC 60332-3 Cat. C<\/td><td>The source gives a bunched-cable vertical flame-spread reference; it is not by itself a CPR class.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Conductor screen<\/td><td class=\"source\">Semi-conducting compound (XLPE)<\/td><td>Controls the electric-field transition at the copper conductor \/ XLPE interface.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Insulation<\/td><td class=\"source\">XLPE<\/td><td>Cross-linked polyethylene primary insulation for the stated voltage class.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Insulation screen<\/td><td class=\"source\">Semi-conducting compound (XLPE)<\/td><td>Controls the outer electric-field interface of the XLPE insulation.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Semi-conducting tape<\/td><td class=\"source\">Crape tape<\/td><td>The source wording is preserved; confirm the released material and dimensions in the controlled drawing.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Metallic screen<\/td><td class=\"source\">Concentric \/ Copper wires + copper tape<\/td><td>The official product row reports a 25 mm\u00b2 screen section; bonding and fault duty still require a project earthing design.<\/td><td class=\"source\">Supplied \/ official product page<\/td><\/tr><tr><td class=\"key\">Separation sheath<\/td><td class=\"source\">PVC<\/td><td>Separates the copper-screened core from the aluminium wire armour.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Armour<\/td><td class=\"source\">Round aluminium wires<\/td><td>Single layer of aluminium wires provides mechanical protection around the separated cable core.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Armour type<\/td><td class=\"source\">Single layer of aluminium wires<\/td><td>The exact released wire diameter, lay, coverage, joints and bonding remain drawing-controlled.<\/td><td class=\"source\">Official family PDF \/ product page<\/td><\/tr><tr><td class=\"key\">Outer sheath<\/td><td class=\"source\">PVC<\/td><td>PVC external protection; the source does not provide a halogen-free or LSZH claim for this product record.<\/td><td class=\"source\">Supplied \/ official product page<\/td><\/tr><tr><td class=\"key\">Sheath colour<\/td><td class=\"source\">Red<\/td><td>Official product page characteristic.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Average insulation thickness<\/td><td class=\"source\">8.5 mm<\/td><td>Published dimensional characteristic.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Nominal outer sheath thickness<\/td><td class=\"source\">2.7 mm<\/td><td>Published dimensional characteristic.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Nominal outer diameter<\/td><td class=\"source\">53.0 mm<\/td><td>Use for installation planning and the clearly marked 12 x D screening calculation.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Conductor diameter<\/td><td class=\"source\">18.3 mm<\/td><td>Published product dimension; do not substitute it for the overall cable diameter.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Approximate weight<\/td><td class=\"source\">4710 kg\/km<\/td><td>Use for drum, lifting, support and route-load planning; actual delivery mass remains product-controlled.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Screen section<\/td><td class=\"source\">25 mm\u00b2<\/td><td>Published copper-screen section for the 1×240\/25 mm\u00b2 row.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Max. DC resistance at 20 \u00b0C<\/td><td class=\"source\">0.0754 Ohm\/km<\/td><td>Conductor resistance value for the specific 240 mm\u00b2 product row.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Perm. current rating, buried 20 \u00b0C \u2014 flat<\/td><td class=\"source\">– A<\/td><td>A dash is retained exactly; do not replace it with the trefoil value.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Perm. current rating, buried 20 \u00b0C \u2014 trefoil<\/td><td class=\"source\">469 A<\/td><td>Published rating under the stated buried trefoil basis; not a universal ampacity.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Perm. current rating, air 30 \u00b0C \u2014 flat<\/td><td class=\"source\">641 A<\/td><td>Published rating under the stated air flat basis; formation, spacing and ambient must be confirmed.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Perm. current rating, air 30 \u00b0C \u2014 trefoil<\/td><td class=\"source\">– A<\/td><td>A dash is retained exactly; do not replace it with the air-flat value.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Permissible short-circuit current, conductor 1 s<\/td><td class=\"source\">34.3 kA<\/td><td>Published conductor short-circuit value for the 240 mm\u00b2 row.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Permissible short-circuit current, screen 1 s<\/td><td class=\"source\">– kA<\/td><td>Screen short-circuit duty is not numerically supplied in the product row; close it in the earthing\/protection dossier.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Nexans reference<\/td><td class=\"source\">10563489<\/td><td>Product reference for YXC7VY2V 1×240\/25 mm\u00b2.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Country reference<\/td><td class=\"source\">TR<\/td><td>Product-page country reference.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">EAN 13<\/td><td class=\"source\">8680969138826<\/td><td>Product identifier, not an electrical design value.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Packaging<\/td><td class=\"source\">Drum (1000 m)<\/td><td>Family page packaging field; final drum schedule must follow the confirmed ordered length.<\/td><td class=\"source\">Official family page<\/td><\/tr><tr><td class=\"key\">Delivery reel size for 1000 m<\/td><td class=\"source\">– cm<\/td><td>The official product page leaves this field as a dash; no reel dimensions are invented.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Product row name<\/td><td class=\"source\">YXC7VY2V 1×240\/25mm2<\/td><td>Official product-row name for the 240 mm\u00b2 conductor and 25 mm\u00b2 screen.<\/td><td class=\"source\">Official product page \/ product PDF<\/td><\/tr><tr><td class=\"key\">Source record \u2014 page 1<\/td><td class=\"source\">Generated 8\/4\/26 \u2014 www.nexans.com.tr \u2014 Page 1 \/ 2<\/td><td>Preserved as supplied; the first page contains the family title, application and construction sequence.<\/td><td class=\"source\">Supplied \/ official source metadata<\/td><\/tr><tr><td class=\"key\">Source record \u2014 page 2<\/td><td class=\"source\">YXC7VY2V 20.3\/35 kV \u2014 Generated 8\/4\/26 \u2014 www.nexans.com.tr \u2014 Page 2 \/ 2<\/td><td>Preserved as supplied; the second page contains the characteristics and product row.<\/td><td class=\"source\">Supplied \/ official source metadata<\/td><\/tr><tr><td class=\"key\">Source disclaimer<\/td><td class=\"source\">All drawings, designs, specifications, plans and particulars of weights, size and dimensions contained in the technical or commercial documentation of Nexans is indicative only and shall not be binding on Nexans or be treated as constituting a representation on the part of Nexans.<\/td><td>Dimensions, weights and technical particulars are treated as indicative until the controlled Feichun release is approved.<\/td><td class=\"source\">Supplied source disclaimer<\/td><\/tr><\/tbody><\/table><\/div>\n\n<h2>5. Technical matrix \u2014 YXC7VY2V 1×240\/25 mm\u00b2<\/h2>\n<p>The official product row is reproduced without changing its basis. The ratings are formation-specific: buried trefoil at 20 \u00b0C and air flat at 30 \u00b0C. The dashes for buried flat, air trefoil and screen 1 s fault current are intentionally retained.<\/p>\n<div class=\"scroll\"><table class=\"matrix\"><thead><tr><th>Conductor cross-section<\/th><th>Nominal outer diameter<\/th><th>Approx. weight<\/th><th>Max. DC resistance at 20 \u00b0C<\/th><th>Screen section<\/th><th>Buried 20 \u00b0C \u2014 flat<\/th><th>Buried 20 \u00b0C \u2014 trefoil<\/th><th>Air 30 \u00b0C \u2014 flat<\/th><th>Air 30 \u00b0C \u2014 trefoil<\/th><th>Conductor short-circuit 1 s<\/th><th>Screen short-circuit 1 s<\/th><th>Product reference<\/th><\/tr><\/thead><tbody><tr><td class=\"source\">240 mm\u00b2<\/td><td class=\"source\">53.0 mm<\/td><td class=\"source\">4710 kg\/km<\/td><td class=\"source\">0.0754 Ohm\/km<\/td><td class=\"source\">25 mm\u00b2<\/td><td class=\"source\">– A<\/td><td class=\"source\">469 A<\/td><td class=\"source\">641 A<\/td><td class=\"source\">– A<\/td><td class=\"source\">34.3 kA<\/td><td class=\"source\">– kA<\/td><td class=\"source\">10563489<\/td><\/tr><\/tbody><\/table><\/div>\n<p class=\"small\">The values above belong to the official 1×240\/25 mm\u00b2 product row. Final Feichun dimensions, mass, electrical values, installation ratings and accessory compatibility must be released for the ordered construction.<\/p>\n\n<h3>Published-data limitations and design closure<\/h3>\n<div class=\"scroll\"><table><thead><tr><th>Required design input<\/th><th>Source state<\/th><th>Why it matters<\/th><th>Required Feichun release action<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">System voltage<\/td><td class=\"source\">20.3 \/ 35 kV<\/td><td>High-voltage accessory coordination, insulation testing and protection settings must match the ordered system.<\/td><td class=\"source\">Confirm project voltage withstand and accessory file.<\/td><\/tr><tr><td class=\"key\">Conductor selection<\/td><td class=\"source\">240 mm\u00b2<\/td><td>The supplied product row is fixed; no alternative cross-sections are inferred.<\/td><td class=\"source\">Release the exact Feichun size and conductor drawing.<\/td><\/tr><tr><td class=\"key\">Continuous current<\/td><td class=\"source\">469 A buried trefoil; 641 A air flat<\/td><td>These are basis-specific values, not universal ampacity. Buried-flat and air-trefoil fields are dashes.<\/td><td class=\"source\">Recalculate for soil, spacing, depth, ambient, grouping and bonding.<\/td><\/tr><tr><td class=\"key\">Bending control<\/td><td class=\"source\">12 (xD)<\/td><td>With 53.0 mm nominal outer diameter, 636.0 mm is an arithmetic screening radius; the controlled method statement governs.<\/td><td class=\"source\">Confirm drum, entry, roller and accessory radii.<\/td><\/tr><tr><td class=\"key\">Conductor fault duty<\/td><td class=\"source\">34.3 kA for 1 s<\/td><td>Protection clearing time and the actual I\u00b2t duty must be coordinated with the conductor and termination.<\/td><td class=\"source\">Verify protection and joint\/termination capability.<\/td><\/tr><tr><td class=\"key\">Screen fault duty<\/td><td class=\"source\">– kA for 1 s<\/td><td>The screen section is 25 mm\u00b2, but the product row does not publish a numerical screen short-circuit current.<\/td><td class=\"source\">Release screen bonding, earthing and I\u00b2t design.<\/td><\/tr><tr><td class=\"key\">Voltage drop<\/td><td class=\"source\">No product X\/route length\/load profile supplied<\/td><td>DCR alone does not close AC impedance, power factor, load profile or route voltage drop.<\/td><td class=\"source\">Calculate with the actual installation and operating point.<\/td><\/tr><tr><td class=\"key\">Dynamic service<\/td><td class=\"source\">Not stated<\/td><td>12 (xD) is a laying factor, not evidence for reeling, festoon, drag-chain or repeated-torsion service.<\/td><td class=\"source\">Use a qualified dynamic cable family for moving equipment.<\/td><\/tr><tr><td class=\"key\">Fire classification<\/td><td class=\"source\">IEC 60332-3 Cat. C only<\/td><td>Do not upgrade the record to Eca, Cca, B2ca or s\/d\/a qualifiers without a matching declaration.<\/td><td class=\"source\">Review the project fire strategy and current product report.<\/td><\/tr><\/tbody><\/table><\/div>\n\n<h2>6. Derived installation checks<\/h2>\n<div class=\"scroll\"><table><thead><tr><th>Product row<\/th><th>Published outer diameter<\/th><th>Calculation<\/th><th>Derived laying-radius screening value<\/th><th>Published mass<\/th><th>Derived mass per 100 m<\/th><\/tr><\/thead><tbody><tr><td>240 mm\u00b2<\/td><td>12 \u00d7 53.0 mm<\/td><td class=\"derived\">636.0 mm<\/td><td>4710 kg\/km<\/td><td class=\"derived\">471.0 kg\/100 m<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"formula\">Laying-radius screening:\nR_screen = 12 \u00d7 D = 12 \u00d7 53.0 mm = 636.0 mm\n\nMass conversion:\n4710 kg\/km \u00f7 10 = 471.0 kg\/100 m\n\nThese are arithmetic screening values based on the published nominal outer diameter and approximate mass. They do not replace the controlled installation instruction, drum method statement, pulling calculation, sidewall-pressure check or accessory manufacturer limit.<\/div>\n\n<h2>7. Layer-by-layer cross-section<\/h2>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 1180\" role=\"img\" aria-label=\"Professional single-core YXC7VY2V cable cross-section showing copper conductor, XLPE screens, copper screen, PVC separation sheath, aluminium wire armour and PVC outer sheath\">\n<defs>\n<radialGradient id=\"yxc-outer\" cx=\"30%\" cy=\"22%\"><stop stop-color=\"#71343e\"\/><stop offset=\".62\" stop-color=\"#3c1b24\"\/><stop offset=\"1\" stop-color=\"#160e14\"\/><\/radialGradient>\n<radialGradient id=\"yxc-pvc\" cx=\"30%\" cy=\"22%\"><stop stop-color=\"#5b6f7a\"\/><stop offset=\".65\" stop-color=\"#2b3e48\"\/><stop offset=\"1\" stop-color=\"#13232b\"\/><\/radialGradient>\n<radialGradient id=\"yxc-xlpe\" cx=\"30%\" cy=\"22%\"><stop stop-color=\"#f6e9c5\"\/><stop offset=\".72\" stop-color=\"#d3b979\"\/><stop offset=\"1\" stop-color=\"#8f7040\"\/><\/radialGradient>\n<radialGradient id=\"yxc-cu\" cx=\"30%\" cy=\"22%\"><stop stop-color=\"#f6b56d\"\/><stop offset=\".62\" stop-color=\"#b96128\"\/><stop offset=\"1\" stop-color=\"#682d14\"\/><\/radialGradient>\n<pattern id=\"yxc-al\" width=\"28\" height=\"28\" patternUnits=\"userSpaceOnUse\"><path d=\"M-7 24 L24 -7 M3 34 L34 3\" stroke=\"#e7edf0\" stroke-width=\"8\"\/><path d=\"M-7 24 L24 -7 M3 34 L34 3\" stroke=\"#7e8b92\" stroke-width=\"2\"\/><\/pattern>\n<pattern id=\"yxc-copper-screen\" width=\"20\" height=\"20\" patternUnits=\"userSpaceOnUse\"><path d=\"M0 3 L20 17 M-5 3 L15 17 M5 -3 L25 11\" stroke=\"#e5b94d\" stroke-width=\"3.5\"\/><path d=\"M0 17 L20 3 M-5 17 L15 3 M5 23 L25 9\" stroke=\"#855b1d\" stroke-width=\"2.5\"\/><\/pattern>\n<pattern id=\"yxc-semicon\" width=\"18\" height=\"18\" patternUnits=\"userSpaceOnUse\"><circle cx=\"5\" cy=\"5\" r=\"3\" fill=\"#b7d2d7\"\/><circle cx=\"14\" cy=\"14\" r=\"3\" fill=\"#4f777d\"\/><\/pattern>\n<marker id=\"yxc-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0 L12 4 L0 8 Z\" fill=\"#dcebf0\"\/><\/marker>\n<\/defs>\n<rect width=\"1900\" height=\"1180\" fill=\"#06131b\"\/>\n<text x=\"60\" y=\"62\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"35\" font-weight=\"700\">YXC7VY2V 20.3\/35 kV \u2014 single-core physical layer architecture<\/text>\n<text x=\"60\" y=\"101\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">Copper conductor \u00b7 semiconducting conductor screen \u00b7 XLPE \u00b7 semiconducting insulation screen \u00b7 crape tape \u00b7 copper screen \u00b7 PVC separation sheath \u00b7 round aluminium wires \u00b7 PVC outer sheath.<\/text>\n<text x=\"60\" y=\"136\" fill=\"#ffaaa5\" font-family=\"Arial\" font-size=\"16\">Conceptual engineering reconstruction, not a manufacturing drawing. Relative layer thicknesses are illustrative; the released drawing controls dimensions.<\/text>\n<g transform=\"translate(545 650)\">\n <circle r=\"425\" fill=\"url(#yxc-outer)\" stroke=\"#b76b72\" stroke-width=\"14\"\/>\n <circle r=\"370\" fill=\"url(#yxc-al)\" stroke=\"#e4ecef\" stroke-width=\"12\"\/>\n <circle r=\"326\" fill=\"url(#yxc-pvc)\" stroke=\"#88a8b3\" stroke-width=\"9\"\/>\n <circle r=\"291\" fill=\"url(#yxc-copper-screen)\" stroke=\"#e8c37b\" stroke-width=\"10\"\/>\n <circle r=\"262\" fill=\"#263941\" stroke=\"#b2c4ca\" stroke-width=\"6\"\/>\n <circle r=\"238\" fill=\"url(#yxc-semicon)\" stroke=\"#75a1a9\" stroke-width=\"8\"\/>\n <circle r=\"205\" fill=\"url(#yxc-xlpe)\" stroke=\"#ead49e\" stroke-width=\"7\"\/>\n <circle r=\"148\" fill=\"url(#yxc-semicon)\" stroke=\"#75a1a9\" stroke-width=\"8\"\/>\n <circle r=\"127\" fill=\"url(#yxc-cu)\" stroke=\"#f2c58c\" stroke-width=\"7\"\/>\n<\/g>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <path d=\"M545 225 V142\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-arrow)\"\/>\n <text x=\"405\" y=\"120\" font-size=\"23\" font-weight=\"700\" fill=\"#f4c785\">PVC outer sheath<\/text>\n <path d=\"M835 390 H1040\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-arrow)\"\/>\n <text x=\"1060\" y=\"380\" font-size=\"23\" font-weight=\"700\" fill=\"#e8edf0\">Single layer round<\/text><text x=\"1060\" y=\"412\" font-size=\"23\" font-weight=\"700\" fill=\"#e8edf0\">aluminium wire armour<\/text>\n <path d=\"M835 545 H1040\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-arrow)\"\/>\n <text x=\"1060\" y=\"535\" font-size=\"23\" font-weight=\"700\" fill=\"#a9d4dc\">PVC separation sheath<\/text>\n <path d=\"M800 650 H1040\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-arrow)\"\/>\n <text x=\"1060\" y=\"640\" font-size=\"23\" font-weight=\"700\" fill=\"#e8c37b\">Concentric copper screen<\/text><text x=\"1060\" y=\"672\" font-size=\"17\" fill=\"#d5e6ea\">copper wires + copper tape<\/text>\n <path d=\"M693 650 H1040\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-arrow)\"\/>\n <text x=\"1060\" y=\"730\" font-size=\"23\" font-weight=\"700\" fill=\"#bdd4d8\">Crape tape \/ insulation screen<\/text>\n <path d=\"M545 778 V965\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-arrow)\"\/>\n <text x=\"390\" y=\"1010\" font-size=\"23\" font-weight=\"700\" fill=\"#f0d59e\">XLPE insulation<\/text>\n <path d=\"M418 650 H145\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-arrow)\"\/>\n <text x=\"60\" y=\"620\" font-size=\"23\" font-weight=\"700\" fill=\"#8ec6d2\">Semiconducting conductor screen<\/text>\n <text x=\"60\" y=\"653\" font-size=\"23\" font-weight=\"700\" fill=\"#f2b16b\">Circular stranded copper conductor<\/text>\n <rect x=\"1110\" y=\"820\" width=\"620\" height=\"180\" rx=\"14\" fill=\"#0b202b\" stroke=\"#315b6f\" stroke-width=\"3\"\/>\n <text x=\"1150\" y=\"865\" font-size=\"21\" font-weight=\"700\" fill=\"#55dff7\">Published dimensional anchors<\/text>\n <text x=\"1150\" y=\"905\" font-size=\"18\">240 mm\u00b2 conductor \u00b7 18.3 mm conductor diameter<\/text>\n <text x=\"1150\" y=\"935\" font-size=\"18\">8.5 mm average XLPE thickness \u00b7 2.7 mm PVC sheath<\/text>\n <text x=\"1150\" y=\"965\" font-size=\"18\">53.0 mm nominal outer diameter \u00b7 25 mm\u00b2 copper screen<\/text>\n<\/g><\/svg><\/div>\n<p>The diagram follows the supplied sequence. It is intentionally a single-core section: the three-phase system, if required, is assembled from separate single-core units and must not be represented as one three-core cable.<\/p>\n\n<h2>8. Electrical, screen and armour system<\/h2>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 930\" role=\"img\" aria-label=\"YXC7VY2V single-core medium-voltage electrical system showing electric field control, copper screen bonding, aluminium armour and fault path\">\n<defs><marker id=\"yxc-elec-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0 L12 4 L0 8 Z\" fill=\"#dcebf0\"\/><\/marker><linearGradient id=\"yxc-elec-cable\" x1=\"0\" x2=\"1\"><stop stop-color=\"#5b6c74\"\/><stop offset=\"1\" stop-color=\"#1a252b\"\/><\/linearGradient><\/defs>\n<rect width=\"1900\" height=\"930\" fill=\"#06131b\"\/>\n<text x=\"60\" y=\"62\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"35\" font-weight=\"700\">YXC7VY2V single-core system \u2014 electric field, screen and armour path<\/text>\n<text x=\"60\" y=\"101\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">One cable unit is shown. A three-phase circuit arrangement, screen bonding and aluminium-armour treatment are project-level system decisions.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <rect x=\"70\" y=\"205\" width=\"470\" height=\"520\" rx=\"16\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/>\n <text x=\"125\" y=\"270\" font-size=\"27\" font-weight=\"700\" fill=\"#55dff7\">Electric-field platform<\/text>\n <circle cx=\"300\" cy=\"465\" r=\"160\" fill=\"#552c22\" stroke=\"#e8c37b\" stroke-width=\"10\"\/>\n <circle cx=\"300\" cy=\"465\" r=\"132\" fill=\"#d4ba7e\" stroke=\"#75a1a9\" stroke-width=\"10\"\/>\n <circle cx=\"300\" cy=\"465\" r=\"96\" fill=\"#536b74\" stroke=\"#c8d9dd\" stroke-width=\"6\"\/>\n <circle cx=\"300\" cy=\"465\" r=\"60\" fill=\"#bd692c\" stroke=\"#f2c58c\" stroke-width=\"6\"\/>\n <text x=\"206\" y=\"470\" font-size=\"16\" fill=\"#fff\">Cu core<\/text><text x=\"200\" y=\"520\" font-size=\"15\" fill=\"#fff\">XLPE<\/text>\n <text x=\"112\" y=\"660\" font-size=\"18\">Conductor screen \u2192 XLPE<\/text><text x=\"112\" y=\"691\" font-size=\"18\">\u2192 insulation screen \u2192 Cu screen<\/text>\n <rect x=\"650\" y=\"205\" width=\"510\" height=\"520\" rx=\"16\" fill=\"#0b202b\" stroke=\"#e8c37b\" stroke-width=\"4\"\/>\n <text x=\"710\" y=\"270\" font-size=\"27\" font-weight=\"700\" fill=\"#e8c37b\">Screen and armour<\/text>\n <path d=\"M720 360 H1080\" stroke=\"#d9b649\" stroke-width=\"20\"\/><path d=\"M720 405 H1080\" stroke=\"#9d7b2e\" stroke-width=\"8\"\/>\n <text x=\"735\" y=\"475\" font-size=\"21\">25 mm\u00b2 copper screen<\/text>\n <path d=\"M720 555 H1080\" stroke=\"#dce5e8\" stroke-width=\"30\"\/><path d=\"M720 600 H1080\" stroke=\"#69767c\" stroke-width=\"10\"\/>\n <text x=\"735\" y=\"670\" font-size=\"21\">single layer aluminium wires<\/text>\n <path d=\"M540 465 H650\" stroke=\"#dcebf0\" stroke-width=\"5\" marker-end=\"url(#yxc-elec-arrow)\"\/>\n <path d=\"M1160 465 H1290\" stroke=\"#dcebf0\" stroke-width=\"5\" marker-end=\"url(#yxc-elec-arrow)\"\/>\n <rect x=\"1290\" y=\"205\" width=\"535\" height=\"520\" rx=\"16\" fill=\"#0b202b\" stroke=\"#62df9c\" stroke-width=\"4\"\/>\n <text x=\"1350\" y=\"270\" font-size=\"27\" font-weight=\"700\" fill=\"#62df9c\">Release gates<\/text>\n <text x=\"1350\" y=\"340\" font-size=\"20\">screen continuity and bonding<\/text>\n <text x=\"1350\" y=\"385\" font-size=\"20\">aluminium armour earthing treatment<\/text>\n <text x=\"1350\" y=\"430\" font-size=\"20\">34.3 kA conductor I\u00b2t for 1 s<\/text>\n <text x=\"1350\" y=\"475\" font-size=\"20\">screen 1 s duty: not supplied<\/text>\n <text x=\"1350\" y=\"520\" font-size=\"20\">single-core phase arrangement<\/text>\n <text x=\"1350\" y=\"565\" font-size=\"20\">termination and joint compatibility<\/text>\n <text x=\"1350\" y=\"610\" font-size=\"20\">voltage-drop \/ formation calculation<\/text>\n <rect x=\"1340\" y=\"650\" width=\"430\" height=\"48\" rx=\"9\" fill=\"#081b24\" stroke=\"#ff777f\" stroke-width=\"2\"\/><text x=\"1360\" y=\"682\" font-size=\"16\" fill=\"#ffaaa5\">Do not infer screen fault duty.<\/text>\n<\/g><\/svg><\/div>\n<div class=\"grid\"><div class=\"box\"><b>Conductor and insulation<\/b><br>The 240 mm\u00b2 circular stranded copper conductor carries the phase current. The semiconducting conductor screen, XLPE and insulation screen maintain a controlled radial electric field.<\/div><div class=\"box\"><b>Copper screen<\/b><br>The 25 mm\u00b2 copper screen is a published dimensional value. Continuity, bonding, induced-current control and earth-fault duty require the project earthing design.<\/div><div class=\"box\"><b>Aluminium armour<\/b><br>Round aluminium wires provide mechanical protection, but armour behaviour is not automatically equivalent to the copper screen or a dedicated protective conductor.<\/div><div class=\"box\"><b>Single-core arrangement<\/b><br>For a three-phase circuit, phase spacing, trefoil\/flat formation, bonding arrangement and permissible current must be calculated for the actual route.<\/div><\/div>\n\n<h2>9. Thermal, voltage-drop and short-circuit design<\/h2>\n<div class=\"grid\"><div class=\"box\"><b>Current rating basis<\/b><br>The official row gives 469 A for buried trefoil at 20 \u00b0C and 641 A for air flat at 30 \u00b0C. The buried-flat and air-trefoil fields are dashes. These values cannot be copied to another formation.<\/div><div class=\"box\"><b>Temperature boundary<\/b><br>90 \u00b0C is the stated maximum conductor temperature in service and 250 \u00b0C is the short-circuit maximum conductor temperature. Ambient, grouping, soil, sheath and accessory limits still apply.<\/div><div class=\"box\"><b>Voltage drop<\/b><br>For a three-phase set of single-core cables, use the actual AC resistance, reactance, spacing, formation, power factor, load profile and route length. The supplied DCR is not a complete voltage-drop answer.<\/div><div class=\"box\"><b>Fault duty<\/b><br>34.3 kA for conductor 1 s is published. Screen 1 s current is a dash, so screen bonding and fault-return coordination cannot be closed from the product row alone.<\/div><\/div>\n<div class=\"formula\">Three-phase voltage-drop screening relation for a single-core phase set:\n\u0394U \u2248 \u221a3 \u00d7 I \u00d7 (R_ac \u00d7 cos \u03c6 + X \u00d7 sin \u03c6) \u00d7 L\n\nShort-circuit coordination:\nI\u00b2t_protection \u2264 I\u00b2t_conductor \/ screen \/ armour \/ joint \/ termination system\n\nUse the published 0.0754 Ohm\/km DCR only as one input. Formation-specific AC impedance, temperature correction, screen\/armour current paths and route conditions require project calculation.<\/div>\n\n<h2>10. Fire and PVC performance boundary<\/h2>\n<div class=\"grid\"><div class=\"box\"><b>IEC 60332-3 Cat. C<\/b><br>The source lists a Category C bunched-cable flame-spread reference. It is not a CPR Eca\/Cca\/B2ca declaration and does not establish fire resistance.<\/div><div class=\"box\"><b>PVC sheath system<\/b><br>The construction lists PVC separation sheath and PVC outer sheath. No LSZH, halogen-free, smoke-density or corrosive-gas performance is added to this product record.<\/div><div class=\"box\"><b>Project fire dossier<\/b><br>Confirm cable grouping, penetrations, barriers, supports, enclosures, ventilation, emergency access and local construction requirements.<\/div><div class=\"box\"><b>Mechanical\/fire trade-off<\/b><br>Aluminium wire armour with PVC has a different mechanical, electrical and fire profile from LSZH or steel-armoured constructions. Selection must follow the actual project priority.<\/div><\/div>\n<div class=\"warn\"><b>Procurement rule:<\/b> do not upgrade this record to Eca, Cca, B2ca, LSZH, halogen-free or any s\/d\/a qualifier without a current matching declaration and test report for the exact Feichun construction.<\/div>\n\n<h2>11. Fixed-route applications<\/h2>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 980\" role=\"img\" aria-label=\"YXC7VY2V fixed-route application diagram from 20.3\/35 kV substation through underground or duct route to industrial load\">\n<defs><linearGradient id=\"yxc-sky\" x1=\"0\" x2=\"0\" y1=\"0\" y2=\"1\"><stop stop-color=\"#0b3347\"\/><stop offset=\"1\" stop-color=\"#06131b\"\/><\/linearGradient><linearGradient id=\"yxc-ground\" x1=\"0\" x2=\"0\" y1=\"0\" y2=\"1\"><stop stop-color=\"#304e55\"\/><stop offset=\"1\" stop-color=\"#0a1b24\"\/><\/linearGradient><marker id=\"yxc-app-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0 L12 4 L0 8 Z\" fill=\"#dcebf0\"\/><\/marker><\/defs>\n<rect width=\"1900\" height=\"980\" fill=\"url(#yxc-sky)\"\/><rect y=\"620\" width=\"1900\" height=\"360\" fill=\"url(#yxc-ground)\"\/><path d=\"M0 620 H1900\" stroke=\"#7f9ea4\" stroke-width=\"4\"\/>\n<text x=\"60\" y=\"62\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"35\" font-weight=\"700\">YXC7VY2V 20.3\/35 kV \u2014 fixed-route application architecture<\/text>\n<text x=\"60\" y=\"101\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">Low-loss fixed energy-network feeder for residential or industrial areas, underground routes and ducts.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <rect x=\"70\" y=\"205\" width=\"300\" height=\"250\" rx=\"15\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/><path d=\"M130 380 V285 H310 V380\" fill=\"none\" stroke=\"#a7bcc2\" stroke-width=\"13\"\/><path d=\"M145 380 H295\" stroke=\"#a7bcc2\" stroke-width=\"13\"\/><circle cx=\"220\" cy=\"275\" r=\"35\" fill=\"#e8c37b\"\/><text x=\"108\" y=\"420\" font-size=\"23\" font-weight=\"700\" fill=\"#55dff7\">20.3\/35 kV source<\/text>\n <rect x=\"540\" y=\"205\" width=\"370\" height=\"250\" rx=\"15\" fill=\"#0b202b\" stroke=\"#e8c37b\" stroke-width=\"4\"\/><path d=\"M600 380 V315 H850 V380\" stroke=\"#839ba2\" stroke-width=\"16\" fill=\"none\"\/><path d=\"M625 315 H825\" stroke=\"#e6edf0\" stroke-width=\"5\"\/><text x=\"610\" y=\"420\" font-size=\"23\" font-weight=\"700\" fill=\"#e8c37b\">Duct \/ underground route<\/text>\n <rect x=\"1080\" y=\"205\" width=\"320\" height=\"250\" rx=\"15\" fill=\"#0b202b\" stroke=\"#62df9c\" stroke-width=\"4\"\/><path d=\"M1160 380 V300 H1320 V380\" fill=\"none\" stroke=\"#a7bcc2\" stroke-width=\"13\"\/><path d=\"M1180 380 H1300\" stroke=\"#a7bcc2\" stroke-width=\"13\"\/><text x=\"1115\" y=\"420\" font-size=\"23\" font-weight=\"700\" fill=\"#62df9c\">Industrial load<\/text>\n <rect x=\"1520\" y=\"205\" width=\"300\" height=\"250\" rx=\"15\" fill=\"#0b202b\" stroke=\"#aa9bff\" stroke-width=\"4\"\/><path d=\"M1590 380 V300 H1750 V380\" fill=\"none\" stroke=\"#a7bcc2\" stroke-width=\"13\"\/><path d=\"M1610 380 H1730\" stroke=\"#a7bcc2\" stroke-width=\"13\"\/><text x=\"1570\" y=\"420\" font-size=\"23\" font-weight=\"700\" fill=\"#aa9bff\">Plant distribution<\/text>\n <path d=\"M370 330 H540 M910 330 H1080 M1400 330 H1520\" stroke=\"#dcebf0\" stroke-width=\"5\" marker-end=\"url(#yxc-app-arrow)\"\/>\n <path d=\"M220 455 V750 H1660 V455\" fill=\"none\" stroke=\"#202e34\" stroke-width=\"42\"\/><path d=\"M220 455 V750 H1660 V455\" fill=\"none\" stroke=\"#a8b4b8\" stroke-width=\"5\"\/>\n <path d=\"M220 475 V735\" stroke=\"#71343e\" stroke-width=\"21\"\/><path d=\"M220 475 V735\" stroke=\"#c9d4d8\" stroke-width=\"3\"\/>\n <text x=\"230\" y=\"820\" font-size=\"24\" font-weight=\"700\" fill=\"#ffaaa5\">One single-core cable unit shown in the route<\/text>\n <text x=\"230\" y=\"856\" font-size=\"18\">A three-phase installation may use three units; spacing, formation, bonding and current rating require project calculation.<\/text>\n <rect x=\"80\" y=\"900\" width=\"1740\" height=\"50\" rx=\"10\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"110\" y=\"932\" font-size=\"17\" fill=\"#dcebf0\">Review water exposure, mechanical loads, PVC fire behaviour, earthing, duct fill, soil thermal resistance and joint access.<\/text>\n<\/g><\/svg><\/div>\n<div class=\"grid\"><div class=\"box\"><b>Energy-network feeder<\/b><br>The source identifies low dielectric losses and networks with sudden load changes. Final selection needs load profile, conductor area, protection and route design.<\/div><div class=\"box\"><b>Underground route<\/b><br>Review soil thermal resistance, depth, water exposure, drainage, backfill, mechanical impact and joint access.<\/div><div class=\"box\"><b>Duct installation<\/b><br>Check duct fill, pulling load, sidewall pressure, entry geometry, bends, heat dissipation, water and installation temperature.<\/div><div class=\"box\"><b>Residential \/ industrial area<\/b><br>Review public access, fire strategy, induced voltage, earthing, support spacing, maintenance clearance and the consequences of PVC sheath selection.<\/div><\/div>\n\n<h2>12. Handling and termination<\/h2>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 1030\" role=\"img\" aria-label=\"YXC7VY2V installation diagram showing drum pay-off, rollers, aluminium wire armour, PVC sheath and 12 times diameter laying-radius control\">\n<defs><marker id=\"yxc-inst-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0 L12 4 L0 8 Z\" fill=\"#dcebf0\"\/><\/marker><linearGradient id=\"yxc-floor\" x1=\"0\" x2=\"0\" y1=\"0\" y2=\"1\"><stop stop-color=\"#294850\"\/><stop offset=\"1\" stop-color=\"#071820\"\/><\/linearGradient><\/defs>\n<rect width=\"1900\" height=\"1030\" fill=\"#06131b\"\/><rect y=\"640\" width=\"1900\" height=\"390\" fill=\"url(#yxc-floor)\"\/><path d=\"M0 640 H1900\" stroke=\"#6a888f\" stroke-width=\"4\"\/>\n<text x=\"60\" y=\"62\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"35\" font-weight=\"700\">YXC7VY2V installation controls \u2014 12 (xD) laying factor<\/text>\n<text x=\"60\" y=\"101\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">The source states 12 (xD). With the official 53.0 mm nominal outer diameter, the arithmetic screening value is 636.0 mm.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <rect x=\"70\" y=\"220\" width=\"270\" height=\"250\" rx=\"15\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/><circle cx=\"205\" cy=\"330\" r=\"75\" fill=\"#364b54\" stroke=\"#c2d0d5\" stroke-width=\"12\"\/><circle cx=\"205\" cy=\"330\" r=\"31\" fill=\"#263941\" stroke=\"#e8c37b\" stroke-width=\"8\"\/><path d=\"M205 255 V405 M130 330 H280\" stroke=\"#a9c1c5\" stroke-width=\"7\"\/><text x=\"115\" y=\"435\" font-size=\"23\" font-weight=\"700\">Drum pay-off<\/text><text x=\"110\" y=\"464\" font-size=\"16\">single-core cable \u00b7 ends sealed<\/text>\n <path d=\"M340 330 C455 330 470 540 600 540\" fill=\"none\" stroke=\"#10171b\" stroke-width=\"70\"\/><path d=\"M340 330 C455 330 470 540 600 540\" fill=\"none\" stroke=\"#71343e\" stroke-width=\"50\"\/><path d=\"M340 330 C455 330 470 540 600 540\" fill=\"none\" stroke=\"#dce5e8\" stroke-width=\"4\"\/>\n <path d=\"M390 170 H650\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-inst-arrow)\"\/><text x=\"90\" y=\"145\" font-size=\"22\" font-weight=\"700\" fill=\"#e8c37b\">Controlled pulling direction<\/text><text x=\"90\" y=\"179\" font-size=\"17\">Avoid uncontrolled twist, flange impact and local armour\/sheath damage.<\/text>\n <rect x=\"600\" y=\"475\" width=\"370\" height=\"115\" rx=\"12\" fill=\"#263941\" stroke=\"#9eb7bd\" stroke-width=\"5\"\/><path d=\"M680 535 H890\" stroke=\"#d0d8dc\" stroke-width=\"14\"\/><text x=\"650\" y=\"675\" font-size=\"23\" font-weight=\"700\">Roller \/ cleat support<\/text><text x=\"650\" y=\"708\" font-size=\"17\">protect aluminium wires and PVC sheath<\/text>\n <path d=\"M970 540 H1100\" stroke=\"#71343e\" stroke-width=\"50\"\/><path d=\"M970 540 H1100\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#yxc-inst-arrow)\"\/><rect x=\"1100\" y=\"360\" width=\"350\" height=\"330\" rx=\"15\" fill=\"#0b202b\" stroke=\"#62df9c\" stroke-width=\"4\"\/><rect x=\"1170\" y=\"450\" width=\"210\" height=\"125\" fill=\"#263941\" stroke=\"#a6c2c7\" stroke-width=\"6\"\/><circle cx=\"1210\" cy=\"500\" r=\"15\" fill=\"#be6c31\"\/><path d=\"M1190 545 H1360\" stroke=\"#55dff7\" stroke-width=\"7\"\/><text x=\"1140\" y=\"635\" font-size=\"23\" font-weight=\"700\">Single-core termination<\/text><text x=\"1140\" y=\"668\" font-size=\"17\">phase \/ screen \/ armour record<\/text>\n <rect x=\"320\" y=\"805\" width=\"650\" height=\"125\" rx=\"12\" fill=\"#241419\" stroke=\"#ff777f\" stroke-width=\"4\"\/><text x=\"365\" y=\"850\" font-size=\"24\" font-weight=\"700\" fill=\"#ffaaa5\">12 \u00d7 53.0 mm = 636.0 mm<\/text><text x=\"365\" y=\"885\" font-size=\"18\">Derived laying-radius screening value \u2014 confirm the controlled method.<\/text>\n <path d=\"M1450 540 H1780\" stroke=\"#62df9c\" stroke-width=\"4\"\/><text x=\"1480\" y=\"405\" font-size=\"23\" font-weight=\"700\" fill=\"#62df9c\">Acceptance checks<\/text><text x=\"1480\" y=\"445\" font-size=\"17\">document revision<\/text><text x=\"1480\" y=\"475\" font-size=\"17\">outer sheath \/ armour inspection<\/text><text x=\"1480\" y=\"505\" font-size=\"17\">screen continuity<\/text><text x=\"1480\" y=\"535\" font-size=\"17\">phase identification<\/text><text x=\"1480\" y=\"565\" font-size=\"17\">34.3 kA conductor I\u00b2t<\/text><text x=\"1480\" y=\"595\" font-size=\"17\">termination compatibility<\/text>\n <rect x=\"80\" y=\"965\" width=\"1740\" height=\"48\" rx=\"10\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"110\" y=\"996\" font-size=\"17\" fill=\"#ffaaa5\">12 (xD) is a laying factor. This cable record does not establish continuous reeling, festoon, drag-chain or torsional service.<\/text>\n<\/g><\/svg><\/div>\n<ol><li>Confirm the exact YXC7VY2V 1×240\/25 mm\u00b2 reference, drum length, source revision, nominal diameter, mass and end seals before unloading.<\/li><li>Use the stated 12 (xD) laying factor only as a screening input; confirm the controlled minimum-radius and accessory method statement.<\/li><li>Align the drum and pay off in the marked direction. Prevent reverse winding, flange impact, uncontrolled twist and local PVC sheath damage.<\/li><li>Use rollers and supports that protect the round aluminium wires and prevent excessive sidewall pressure at bends and entries.<\/li><li>Prepare the single-core termination with the correct copper screen continuity, armour treatment, phase identification, gland and accessory dimensions.<\/li><li>Bond the copper screen and aluminium armour according to the approved earthing design. Record continuity, torque, phase identity and test results.<\/li><li>Before energisation, complete conductor resistance, screen continuity, insulation\/sheath tests, specified MV withstand or partial-discharge tests, phase identification, accessory inspection and as-built records.<\/li><\/ol>\n\n<h2>13. Selection comparison for engineers<\/h2>\n<div class=\"scroll\"><table><thead><tr><th>Requirement<\/th><th>YXC7VY2V reference<\/th><th>What must be verified<\/th><th>Engineering decision<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">20.3\/35 kV fixed feeder<\/td><td>Single-core copper \/ XLPE; 240 mm\u00b2; 20.3\/35 kV.<\/td><td>System insulation coordination, accessories, phase arrangement and protection.<\/td><td class=\"source\">Candidate after project design.<\/td><\/tr><tr><td class=\"key\">High-current route<\/td><td>641 A air flat; 469 A buried trefoil under published bases.<\/td><td>Actual formation, spacing, ambient, soil, grouping and thermal resistivity.<\/td><td class=\"source\">Use only after route recalculation.<\/td><\/tr><tr><td class=\"key\">Mechanically exposed fixed route<\/td><td>Single layer round aluminium wire armour; PVC outer sheath.<\/td><td>Impact, compression, pulling load, bending, cleats, armour bonding and sheath protection.<\/td><td class=\"source\">Potentially suitable subject to mechanical design.<\/td><\/tr><tr><td class=\"key\">Screen\/fault coordination<\/td><td>25 mm\u00b2 copper screen; 34.3 kA conductor 1 s; screen 1 s dash.<\/td><td>Earthing, bonding, screen fault duty, protection clearing time and accessory capability.<\/td><td class=\"warn\">Do not release without screen-duty closure.<\/td><\/tr><tr><td class=\"key\">Fire-sensitive building<\/td><td>IEC 60332-3 Cat. C; PVC sheath system.<\/td><td>Current product declaration, smoke\/corrosive-gas evidence and local fire requirements.<\/td><td class=\"warn\">Do not assume LSZH or CPR class.<\/td><\/tr><tr><td class=\"key\">Reeling \/ festoon \/ drag chain<\/td><td>12 (xD) laying factor; fixed energy-network application.<\/td><td>Cycles, speed, torsion, acceleration, rollers and dynamic bend radius.<\/td><td class=\"warn\">Select a dedicated dynamic cable family.<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 900\" role=\"img\" aria-label=\"YXC7VY2V engineering selection flow for a single-core 20.3\/35 kV copper XLPE aluminium-wire-armoured PVC cable\">\n<defs><marker id=\"yxc-sel-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0 L12 4 L0 8 Z\" fill=\"#dcebf0\"\/><\/marker><\/defs>\n<rect width=\"1900\" height=\"900\" fill=\"#06131b\"\/><text x=\"60\" y=\"62\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"35\" font-weight=\"700\">YXC7VY2V release gate \u2014 verify system data before selection<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <rect x=\"60\" y=\"205\" width=\"290\" height=\"230\" rx=\"14\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"112\" y=\"265\" font-size=\"24\" font-weight=\"700\">1. System basis<\/text><text x=\"112\" y=\"310\" font-size=\"18\">20.3\/35 kV<\/text><text x=\"112\" y=\"345\" font-size=\"18\">load \/ fault \/ route<\/text><text x=\"112\" y=\"380\" font-size=\"18\">single-core phase set<\/text><path d=\"M350 320 H465\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-sel-arrow)\"\/>\n <rect x=\"465\" y=\"170\" width=\"330\" height=\"300\" rx=\"14\" fill=\"#0b202b\" stroke=\"#e8c37b\" stroke-width=\"4\"\/><text x=\"525\" y=\"235\" font-size=\"24\" font-weight=\"700\" fill=\"#e8c37b\">2. Cable build<\/text><text x=\"525\" y=\"280\" font-size=\"18\">Cu \/ XLPE \/ Cu screen<\/text><text x=\"525\" y=\"315\" font-size=\"18\">PVC separation sheath<\/text><text x=\"525\" y=\"350\" font-size=\"18\">single Al wire armour<\/text><text x=\"525\" y=\"385\" font-size=\"18\">PVC outer sheath<\/text><text x=\"525\" y=\"430\" font-size=\"16\" fill=\"#ffaaa5\">240 mm\u00b2 \/ 25 mm\u00b2 screen<\/text><path d=\"M795 320 H915\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-sel-arrow)\"\/>\n <rect x=\"915\" y=\"170\" width=\"350\" height=\"300\" rx=\"14\" fill=\"#0b202b\" stroke=\"#ff777f\" stroke-width=\"4\"\/><text x=\"975\" y=\"235\" font-size=\"24\" font-weight=\"700\" fill=\"#ffaaa5\">3. Calculation gate<\/text><text x=\"975\" y=\"280\" font-size=\"18\">12 (xD) \/ 53.0 mm<\/text><text x=\"975\" y=\"315\" font-size=\"18\">90 \u00b0C service \/ 250 \u00b0C fault<\/text><text x=\"975\" y=\"350\" font-size=\"18\">469 A trefoil \/ 641 A air-flat<\/text><text x=\"975\" y=\"385\" font-size=\"18\">34.3 kA conductor 1 s<\/text><text x=\"975\" y=\"430\" font-size=\"16\" fill=\"#ffaaa5\">screen duty remains open<\/text><path d=\"M1265 320 H1380\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-sel-arrow)\"\/>\n <rect x=\"1380\" y=\"170\" width=\"300\" height=\"300\" rx=\"14\" fill=\"#0b202b\" stroke=\"#62df9c\" stroke-width=\"4\"\/><text x=\"1430\" y=\"235\" font-size=\"24\" font-weight=\"700\" fill=\"#62df9c\">4. Route review<\/text><text x=\"1430\" y=\"280\" font-size=\"18\">underground \/ duct<\/text><text x=\"1430\" y=\"315\" font-size=\"18\">water \/ soil thermal<\/text><text x=\"1430\" y=\"350\" font-size=\"18\">mechanical loads<\/text><text x=\"1430\" y=\"385\" font-size=\"18\">PVC fire behaviour<\/text><text x=\"1430\" y=\"420\" font-size=\"18\">earthing \/ accessories<\/text><path d=\"M1680 320 H1790\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-sel-arrow)\"\/>\n <rect x=\"1790\" y=\"170\" width=\"80\" height=\"300\" rx=\"14\" fill=\"#0b202b\" stroke=\"#aa9bff\" stroke-width=\"4\"\/><text x=\"1804\" y=\"235\" font-size=\"19\" font-weight=\"700\" fill=\"#aa9bff\">5<\/text><text x=\"1804\" y=\"280\" font-size=\"16\">test<\/text><text x=\"1804\" y=\"315\" font-size=\"16\">bond<\/text><text x=\"1804\" y=\"350\" font-size=\"16\">install<\/text><text x=\"1804\" y=\"385\" font-size=\"16\">record<\/text>\n <path d=\"M1090 470 V610\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#yxc-sel-arrow)\"\/><rect x=\"580\" y=\"610\" width=\"1020\" height=\"170\" rx=\"14\" fill=\"#081b24\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"660\" y=\"665\" font-size=\"25\" font-weight=\"700\" fill=\"#55dff7\">Final release: match the exact product row<\/text><text x=\"660\" y=\"710\" font-size=\"18\">screen continuity \u00b7 conductor resistance \u00b7 insulation \/ sheath tests \u00b7 phase ID<\/text><text x=\"660\" y=\"747\" font-size=\"18\">earthing and armour treatment \u00b7 protection I\u00b2t \u00b7 route ampacity \u00b7 accessory dimensions<\/text>\n<\/g><\/svg><\/div>\n\n<h2>14. Failure mode and effects analysis<\/h2>\n<div class=\"grid\"><div class=\"warn\"><b>Designation confusion:<\/b> YXC7VY2V and N2XSYR(AL)Y are merged without retaining the source title and international designation separately.<\/div><div class=\"warn\"><b>Formation substitution:<\/b> 641 A air-flat or 469 A buried-trefoil is copied into another formation without recalculation.<\/div><div class=\"warn\"><b>Screen assumption:<\/b> 25 mm\u00b2 screen section is treated as a published screen 1 s fault-current value even though the source gives a dash.<\/div><div class=\"warn\"><b>Radius assumption:<\/b> 12\u00d7D is treated as a dynamic-service rating rather than a laying factor.<\/div><div class=\"warn\"><b>Armour fault path:<\/b> aluminium wires are assumed to carry a known earth-fault current without bonding and I\u00b2t design.<\/div><div class=\"warn\"><b>Fire substitution:<\/b> IEC 60332-3 Cat. C is treated as proof of Eca\/Cca\/B2ca, LSZH or halogen-free performance.<\/div><div class=\"warn\"><b>Dimensional substitution:<\/b> 53.0 mm and 4710 kg\/km are copied to another conductor size or manufacturer construction.<\/div><div class=\"warn\"><b>Dynamic misuse:<\/b> a fixed-route cable is installed in reeling, festoon or energy-chain service without dynamic qualification.<\/div><\/div>\n\n<h2>15. Feichun certification and project assurance<\/h2>\n<div class=\"note\"><b>Engineered for maximum safety in demanding environments<\/b>, Feichun Cable cable systems comply with global standards including <b>ATEX, IECEx, VDE, CE, UKCA, EAC, and the Russian Fire Safety Certificate<\/b>. They are the trusted choice for heavy-duty mining equipment, ship-to-shore cranes, RTG\/RMG cranes, and conveyor systems where high reliability is non-negotiable.<\/div>\n<div class=\"grid\"><div class=\"box\"><b>Configuration-specific certification<\/b><br>Certification capability does not make every YXC7VY2V size automatically TSEK, IECEx, ATEX, EAC or fire-certified. The exact conductor, screen, PVC compounds, aluminium armour, voltage class and documentation must match.<\/div><div class=\"box\"><b>Feichun release dossier<\/b><br>Confirm conductor flexibility, conductor and screen area, DCR, outer diameter, mass, current ratings, short-circuit values, screen bonding, armour treatment, bending instructions and accessory compatibility.<\/div><div class=\"box\"><b>High-voltage accessory control<\/b><br>For 20.3\/35 kV service, the termination and joint system must be selected with the exact insulation diameter, screen preparation, sheath, armour and test requirements.<\/div><div class=\"box\"><b>Engineering value<\/b><br>Feichun can develop the copper \/ XLPE \/ copper-screen \/ PVC \/ aluminium-wire-armoured architecture around the actual route, protection system and market documentation without copying incomplete data.<\/div><\/div>\n<div class=\"warn\"><b>Release condition:<\/b> this article does not invent a TSEK certificate number, screen short-circuit current, CPR class, dynamic rating, product test report or alternative conductor size.<\/div>\n\n<h2>16. Source and revision audit<\/h2>\n<div class=\"scroll\"><table><thead><tr><th>Source<\/th><th>Use in this article<\/th><th>Status and limitation<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/www.nexans.com.tr\/en\/products\/xlpe-insulated-medium-voltage\/copper-conductor\/YXC7VY2V-236407.html\" target=\"_blank\" rel=\"nofollow noopener\">Nexans YXC7VY2V 20.3\/35 kV family page<\/a><\/td><td>Family title, National TSEK, application, construction, product row, packaging and family description.<\/td><td>Official family source; use the exact ordered product reference.<\/td><\/tr><tr><td><a href=\"https:\/\/www.nexans.com.tr\/.rest\/catalog\/v1\/family\/pdf\/36407\/YXC7VY2V-20-3-35-kV\" target=\"_blank\" rel=\"nofollow noopener\">Nexans two-page family PDF<\/a><\/td><td>Generated 8\/4\/26, page labels, source disclaimer, 20.3\/35 kV, 240 mm\u00b2, 8.5 mm insulation, 2.7 mm sheath and flame reference.<\/td><td>Family-level record; preserve the supplied source date and page distinction.<\/td><\/tr><tr><td><a href=\"https:\/\/www.nexans.com.tr\/en\/products\/xlpe-insulated-medium-voltage\/copper-conductor\/YXC7VY2V-236407\/product~10563489~.html\" target=\"_blank\" rel=\"nofollow noopener\">Nexans YXC7VY2V 1×240\/25 mm\u00b2 product page<\/a><\/td><td>Official product reference 10563489, outer diameter, mass, conductor diameter, screen section, DCR, current ratings, sheath colour and fault values.<\/td><td>Product-specific record; do not generalise its values to other sizes.<\/td><\/tr><tr><td><a href=\"https:\/\/www.nexans.com.tr\/.rest\/catalog\/v1\/product\/pdf\/10563489\" target=\"_blank\" rel=\"nofollow noopener\">Nexans product PDF 10563489<\/a><\/td><td>International designation N2XSYR(AL)Y, construction and the 1×240\/25 mm\u00b2 technical row.<\/td><td>Official product-specific PDF generated 8\/4\/26.<\/td><\/tr><tr><td><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/32826\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60332-3-24:2018<\/a><\/td><td>Related official context for Category C vertical flame spread of vertically mounted bunched cables.<\/td><td>The YXC7VY2V record lists IEC 60332-3 Cat. C without an edition; product documentation controls the applicable test basis.<\/td><\/tr><tr><td><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/95394\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60502-2 consolidated record<\/a><\/td><td>General reference for extruded-insulation MV cable scope and fixed-installation engineering context.<\/td><td>The supplied YXC7VY2V source lists National TSEK, not IEC 60502-2; no IEC conformity is claimed here.<\/td><\/tr><tr><td>User-supplied source text<\/td><td>All supplied values, construction sequence, source metadata and page labels.<\/td><td>Preserved; dashes are not filled from another cable.<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"warn\">This article is for preliminary engineering, technical search and comparison. The final Feichun YXC7VY2V 20.3\/35 kV release must be checked against the current product data sheet, National TSEK basis, exact product row, current ratings, screen and armour design, fire documentation, accessories, installation method and local authority requirements.<\/div>\n<\/main>\n<footer><div class=\"wrap\"><h3>Feichun Cable \u2014 YXC7VY2V 20.3\/35 kV engineering support<\/h3><div class=\"contact\"><div><b>Phone<\/b><br><a href=\"tel:+8613855123218\">+86 13855123218<\/a><\/div><div><b>Technical email<\/b><br><a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a><\/div><\/div><p class=\"small\">This article separates supplied values, official product additions, source dashes and Feichun project-confirmation values. Missing fields are not filled from another supplier, cable family or conductor size.<\/p><div>FEICHUN-YXC7VY2V-20-3-35KV-ENGINEERING-EN \u00b7 03 August 2026<\/div><\/div><\/footer>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"A full-English engineering guide to the supplied YXC7VY2V 20.3\/35 kV record and its printed international designation N2XSYR(AL)Y. The article keeps the national title, product construction, official 1×240\/25 mm\u00b2 row, source dates and project-level calculation boundaries distinct.","protected":false},"author":1,"featured_media":25236,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"left","csco_page_header_type":"title","csco_page_load_nextpost":"","footnotes":""},"categories":[66,8,12355,56],"tags":[16,111,17],"class_list":["post-25235","post","type-post","status-publish","format-standard","has-post-thumbnail","category-common-problems-encountered-in-cable-applications","category-cranes-and-material-handling-cable","category-northern-latitude-mining-cable","category-reeling-cable","tag-din-vde-0250","tag-mining-cable","tag-reeling-cable","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25235","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=25235"}],"version-history":[{"count":2,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25235\/revisions"}],"predecessor-version":[{"id":25239,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25235\/revisions\/25239"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/25236"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=25235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=25235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=25235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}