YXC7Z1Y2Z1 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 YXC7Z1Y2Z1 20.3\/35 kV single-core copper-conductor XLPE cable, international designation N2XSHR(AL)H, copper screen, LSZH sheath system and single-layer round aluminium wire armour.\">\n<meta name=\"keywords\" content=\"YXC7Z1Y2Z1 20.3\/35 kV, N2XSHR(AL)H, 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\":\"YXC7Z1Y2Z1 20.3\/35 kV Single-Core XLPE Aluminium Wire Armoured Cable Guide\",\"description\":\"Engineering guide to the YXC7Z1Y2Z1 single-core copper-conductor XLPE cable, N2XSHR(AL)H international designation, copper screen, LSZH 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>YXC7Z1Y2Z1 20.3\/35 kV<\/span><span>N2XSHR(AL)H<\/span><span>1 CORE<\/span><span>Cu \/ XLPE \/ Cu SCREEN<\/span><span>LSZH \/ ROUND AL WIRES \/ LSZH<\/span><span>NATIONAL TSEK<\/span><span>IEC 60332-3 CAT. C<\/span><\/div><h1>Feichun YXC7Z1Y2Z1 20.3\/35 kV \u2014 Single-Core XLPE Cable with LSZH Sheaths and Round Aluminium-Wire Armour<\/h1><p class=\"lead\">A full-English engineering guide to the supplied YXC7Z1Y2Z1 20.3\/35 kV record. The construction is copper conductor, semiconducting XLPE screens, XLPE insulation, crape tape, concentric copper screen, LSZH separation sheath, single-layer round aluminium wires and LSZH outer sheath. The article preserves all three supplied product references, including the two separate 240 mm\u00b2 rows.<\/p><div class=\"meta\"><span>Uo\/U: 20.3 \/ 35 kV<\/span><span>95 and 240 mm\u00b2 rows<\/span><span>Class 2 conductor<\/span><span>8.5 mm insulation<\/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 rows<\/div><div class=\"value\">95 \/ 240<\/div><div>Two conductor areas; the 240 mm\u00b2 reference appears twice.<\/div><\/div><div class=\"card\"><div>Armour<\/div><div class=\"value\">ROUND AL WIRES<\/div><div>Single layer under LSZH protection.<\/div><\/div><div class=\"card\"><div>Fire reference<\/div><div class=\"value\">CAT. C<\/div><div>IEC 60332-3-24 Cat. C; no CPR class is added.<\/div><\/div><\/div><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 LSZH 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 LSZH armoured cable<\/h2><div class=\"note\"><b>YXC7Z1Y2Z1 20.3\/35 kV is a single-core, Class 2 copper-conductor XLPE cable with concentric copper screen, LSZH separation and outer sheaths, and single-layer round aluminium-wire armour.<\/b> The supplied application covers energy networks with sudden load changes in residential or industrial areas, underground or in ducts.<\/div><div class=\"grid\"><div class=\"box\"><b>High-voltage dielectric platform<\/b><br>At 20.3\/35 kV, conductor screen, XLPE insulation and insulation screen must be coordinated with the exact termination, joint, test and earthing system.<\/div><div class=\"box\"><b>Screen and armour distinction<\/b><br>The concentric copper screen is an electrical and fault-path component. The round aluminium wires are mechanical armour. Their continuity and bonding duties must be designed separately.<\/div><div class=\"box\"><b>LSZH route platform<\/b><br>LSZH separation and outer sheaths support low-smoke, halogen-related project objectives, but the supplied record only states IEC 60332-3 Cat. C and does not provide a CPR class.<\/div><div class=\"box\"><b>Data discipline<\/b><br>The matrix contains 95 mm\u00b2 and two 240 mm\u00b2 reference rows. No row is collapsed, and no missing screen-fault value is invented.<\/div><\/div><div class=\"warn\"><b>Engineering boundary:<\/b> 12 (xD) is a laying factor. It does not qualify repeated flexing, torsion, reeling, festoon or drag-chain service.<\/div><h2>2. Designation and construction logic<\/h2><h3>Construction sequence<\/h3><div class=\"scroll\"><table><thead><tr><th>Layer \/ field<\/th><th>Supplied construction<\/th><th>Engineering consequence<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">YXC7Z1Y2Z1<\/td><td>National title for 20.3\/35 kV single-core armoured cable.<\/td><td>Use the complete title and exact product reference.<\/td><\/tr><tr><td class=\"key\">N2XSHR(AL)H<\/td><td>Printed international designation.<\/td><td>Retain as a document cross-reference; do not infer beyond the construction.<\/td><\/tr><tr><td class=\"key\">Cu \/ XLPE<\/td><td>Copper conductor, semiconducting conductor screen and XLPE insulation.<\/td><td>Coordinate electric-field control and MV accessories.<\/td><\/tr><tr><td class=\"key\">Screen<\/td><td>Semiconducting insulation screen, crape tape, concentric copper wires and copper tape.<\/td><td>Verify continuity, bonding and fault-duty path.<\/td><\/tr><tr><td class=\"key\">LSZH \/ Al \/ LSZH<\/td><td>LSZH separation sheath, round aluminium wires, LSZH outer sheath.<\/td><td>Keep sheath, armour and fire evidence configuration-specific.<\/td><\/tr><\/tbody><\/table><\/div><h2>3. Standard and evidence review<\/h2><h3>Standards and evidence<\/h3><div class=\"scroll\"><table><thead><tr><th>Reference<\/th><th>Role in this article<\/th><th>Boundary<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">National TSEK<\/td><td>Product standard printed in the supplied record.<\/td><td>Confirm exact edition, certificate and conformity file.<\/td><\/tr><tr><td class=\"key\">IEC 60332-3-24 Cat. C<\/td><td>Source-listed flame-retardant reference.<\/td><td>Not a CPR class or complete fire strategy.<\/td><\/tr><tr><td class=\"key\">IEC 60502-2<\/td><td>Related international MV engineering context.<\/td><td>Not substituted for the supplied National TSEK reference.<\/td><\/tr><tr><td class=\"key\">LSZH<\/td><td>Supplied for separation and outer sheaths.<\/td><td>Do not infer s\/d\/a subclasses or DoP without product-specific evidence.<\/td><\/tr><\/tbody><\/table><\/div><h2>4. Complete source specification<\/h2><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\">YXC7Z1Y2Z1 20.3\/35 kV<\/td><td>National product title in the supplied record.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Printed international designation<\/td><td class=\"source\">N2XSHR(AL)H<\/td><td>Retained separately as printed in the supplied construction record; do not infer beyond the controlled construction.<\/td><td class=\"source\">Supplied source<\/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 copper-conductor XLPE cable with concentric copper screen, LSZH separation sheath, round aluminium-wire armour and LSZH outer sheath.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">National standard<\/td><td class=\"source\">TSEK<\/td><td>The source lists National TSEK. No automatic IEC 60502-2 conformity is claimed.<\/td><td class=\"source\">Supplied source<\/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; verify system voltage, route, thermal, mechanical, fire and accessory conditions.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Conductor material<\/td><td class=\"source\">Copper<\/td><td>Phase conductor material stated by the source.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Conductor flexibility<\/td><td class=\"source\">Class 2<\/td><td>Class 2 circular stranded construction; not a continuous-flex, reeling or drag-chain rating.<\/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>Conductor geometry stated by the source.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Number of cores<\/td><td class=\"source\">1<\/td><td>Single-core cable unit; phase formation and screen\/armour bonding are installation-level decisions.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Published product rows<\/td><td class=\"source\">95 mm\u00b2; 240 mm\u00b2; 240 mm\u00b2<\/td><td>The 240 mm\u00b2 row appears with three Nexans references in the supplied matrix; all are preserved.<\/td><td class=\"source\">Supplied source matrix<\/td><\/tr><tr><td class=\"key\">Rated Voltage Uo\/U (Um)<\/td><td class=\"source\">20.3 \/ 35 kV<\/td><td>High-voltage accessory, insulation coordination and protection settings must match this class.<\/td><td class=\"source\">Supplied source<\/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\">Operating temperature, range<\/td><td class=\"source\">-20 … 90 \u00b0C<\/td><td>Apply actual ambient, formation, soil, duct and accessory limits.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Short-circuit max. conductor temperature<\/td><td class=\"source\">250 \u00b0C<\/td><td>Use with conductor I\u00b2t, protection clearing time, screen\/armour design and accessories.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Bending factor when laying<\/td><td class=\"source\">12 (xD)<\/td><td>Laying factor only; it does not establish repeated dynamic bending.<\/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 service limit.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Flame retardant<\/td><td class=\"source\">IEC 60332-3-24 Cat. C<\/td><td>Bunched-cable vertical flame-spread reference; not 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\/XLPE interface.<\/td><td class=\"source\">Supplied construction<\/td><\/tr><tr><td class=\"key\">Insulation<\/td><td class=\"source\">XLPE<\/td><td>Primary extruded solid dielectric for 20.3\/35 kV service.<\/td><td class=\"source\">Supplied construction<\/td><\/tr><tr><td class=\"key\">Insulation screen<\/td><td class=\"source\">Semi-conducting compound (XLPE)<\/td><td>Controls the outer electric-field interface.<\/td><td class=\"source\">Supplied construction<\/td><\/tr><tr><td class=\"key\">Semi-conducting tape<\/td><td class=\"source\">Crape tape<\/td><td>Source wording retained exactly.<\/td><td class=\"source\">Supplied construction<\/td><\/tr><tr><td class=\"key\">Metallic screen<\/td><td class=\"source\">Concentric \/ Copper wires + copper tape<\/td><td>Screen continuity, bonding and fault duty require a project earthing design.<\/td><td class=\"source\">Supplied construction<\/td><\/tr><tr><td class=\"key\">Separation sheath<\/td><td class=\"source\">LSZH<\/td><td>Separates the metallic screen from the aluminium-wire armour.<\/td><td class=\"source\">Supplied construction<\/td><\/tr><tr><td class=\"key\">Armour<\/td><td class=\"source\">Round aluminium wires<\/td><td>Single layer of aluminium wires; exact lay and bonding remain drawing-controlled.<\/td><td class=\"source\">Supplied construction<\/td><\/tr><tr><td class=\"key\">Outer sheath<\/td><td class=\"source\">LSZH<\/td><td>Low-smoke, halogen-free sheath claim is retained from the source construction.<\/td><td class=\"source\">Supplied construction<\/td><\/tr><tr><td class=\"key\">Source page 1<\/td><td class=\"source\">Generated 8\/4\/26 \u2014 www.nexans.com.tr \u2014 Page 1 \/ 2<\/td><td>Preserved source metadata.<\/td><td class=\"source\">Supplied metadata<\/td><\/tr><tr><td class=\"key\">Source page 2<\/td><td class=\"source\">YXC7Z1Y2Z1 20.3\/35 kV \u2014 Generated 8\/4\/26 \u2014 www.nexans.com.tr \u2014 Page 2 \/ 2<\/td><td>Preserved source metadata.<\/td><td class=\"source\">Supplied 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>Use the controlled Feichun release for procurement and installation decisions.<\/td><td class=\"source\">Supplied metadata<\/td><\/tr><\/tbody><\/table><\/div><h2>5. Complete technical matrix \u2014 YXC7Z1Y2Z1 20.3\/35 kV<\/h2><p>The source provides two conductor areas and three product references. The duplicate 240 mm\u00b2 rows are not collapsed because the supplied references differ.<\/p><div class=\"scroll\"><table class=\"matrix\"><thead><tr><th>Cross section [mm\u00b2]<\/th><th>Nom. outer diam. [mm]<\/th><th>Approx. weight [kg\/km]<\/th><th>Max. DC Resist. Cond. 20 \u00b0C [Ohm\/km]<\/th><th>Perm. current in air 30 \u00b0C \u2014 flat [A]<\/th><th>Perm. current buried 20 \u00b0C \u2014 trefoil [A]<\/th><th>Short-circuit conductor 1 s [kA]<\/th><th>Nexans Ref.<\/th><\/tr><\/thead><tbody><tr><td class=\"source\">95<\/td><td class=\"source\">45.0<\/td><td class=\"source\">2700<\/td><td class=\"source\">0.193<\/td><td class=\"source\">434<\/td><td class=\"source\">285<\/td><td class=\"source\">13.6<\/td><td class=\"source\">10564587<\/td><\/tr><tr><td class=\"source\">240<\/td><td class=\"source\">53.0<\/td><td class=\"source\">4530<\/td><td class=\"source\">0.0754<\/td><td class=\"source\">641<\/td><td class=\"source\">469<\/td><td class=\"source\">34.3<\/td><td class=\"source\">10563510<\/td><\/tr><tr><td class=\"source\">240<\/td><td class=\"source\">53.0<\/td><td class=\"source\">4530<\/td><td class=\"source\">0.0754<\/td><td class=\"source\">641<\/td><td class=\"source\">469<\/td><td class=\"source\">34.3<\/td><td class=\"source\">10567304<\/td><\/tr><\/tbody><\/table><\/div><p class=\"small\">The user-supplied matrix contains no screen short-circuit field, conductor diameter, sheath diameter, mass for alternative constructions or screen cross-section. Those values are not inserted from another cable.<\/p><h2>6. Derived installation checks<\/h2><p>Derived values use only the supplied nominal outer diameter, weight and 12 (xD) laying factor. They are arithmetic screening values, not additional manufacturer specifications.<\/p><div class=\"scroll\"><table><thead><tr><th>Cross section<\/th><th>Source OD<\/th><th>Laying factor<\/th><th>Derived radius<\/th><th>Approx. mass per 100 m<\/th><\/tr><\/thead><tbody><tr><td>95 mm\u00b2<\/td><td>45.0 mm<\/td><td>12 \u00d7 D<\/td><td class=\"derived\">540.0 mm<\/td><td class=\"derived\">270.0 kg\/100 m<\/td><\/tr><tr><td>240 mm\u00b2<\/td><td>53.0 mm<\/td><td>12 \u00d7 D<\/td><td class=\"derived\">636.0 mm<\/td><td class=\"derived\">453.0 kg\/100 m<\/td><\/tr><\/tbody><\/table><\/div><h2>7. Layer-by-layer cross-section<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 1180\" role=\"img\" aria-label=\"Professional single-core YXC7Z1Y2Z1 cable cross-section showing copper conductor, XLPE screens, copper screen, LSZH separation sheath, aluminium wire armour and LSZH 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\">YXC7Z1Y2Z1 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 LSZH separation sheath \u00b7 round aluminium wires \u00b7 LSZH 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\">LSZH 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\">LSZH 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\">95 and 240 mm\u00b2 conductor rows \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 LSZH sheath<\/text>\n <text x=\"1150\" y=\"965\" font-size=\"18\">53.0 mm nominal outer diameter \u00b7 concentric copper screen<\/text>\n<\/g><\/svg><\/div><p>The diagram is a conceptual engineering reconstruction. It distinguishes the concentric copper screen, LSZH layers and round aluminium-wire armour; exact dimensions remain controlled-drawing fields.<\/p><h2>8. Electrical, screen and armour system<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 930\" role=\"img\" aria-label=\"YXC7Z1Y2Z1 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\">YXC7Z1Y2Z1 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\">concentric 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><div class=\"grid\"><div class=\"box\"><b>Electric-field continuity<\/b><br>Semiconducting screens, XLPE and the copper screen must remain continuous through joints and terminations.<\/div><div class=\"box\"><b>Screen bonding<\/b><br>Bonding depends on system earthing, induced voltage, earth-fault duty, route length and local rules.<\/div><div class=\"box\"><b>Aluminium armour<\/b><br>Round aluminium wires are mechanically distinct from the copper screen; armour continuity and bonding require separate review.<\/div><div class=\"box\"><b>High-voltage accessories<\/b><br>Use the exact insulation diameter, screen preparation, LSZH sheath and armour-entry dimensions for 20.3\/35 kV accessories.<\/div><\/div><h2>9. Thermal, voltage-drop and short-circuit design<\/h2><h3>Engineering closure matrix<\/h3><div class=\"scroll\"><table><thead><tr><th>Check<\/th><th>Known source basis<\/th><th>Engineering implication<\/th><th>Release action<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">System voltage<\/td><td>20.3 \/ 35 kV<\/td><td>High-voltage insulation coordination, joints, terminations and protection must match.<\/td><td>Confirm the project insulation and test file.<\/td><\/tr><tr><td class=\"key\">95 mm\u00b2 row<\/td><td>45.0 mm; 2700 kg\/km; 434 A air flat; 285 A buried trefoil; Ref 10564587<\/td><td>Use only under the stated formation bases and route corrections.<\/td><td>Verify route thermal and accessory design.<\/td><\/tr><tr><td class=\"key\">240 mm\u00b2 rows<\/td><td>53.0 mm; 4530 kg\/km; 641 A air flat; 469 A buried trefoil; Refs 10563510 \/ 10567304<\/td><td>Two references are preserved as separate rows; do not merge them without controlled confirmation.<\/td><td>Identify the exact ordered reference.<\/td><\/tr><tr><td class=\"key\">Bending<\/td><td>12 (xD)<\/td><td>540.0 mm for 45.0 mm OD and 636.0 mm for 53.0 mm OD are screening radii.<\/td><td>Confirm drum, roller, entry and accessory limits.<\/td><\/tr><tr><td class=\"key\">Conductor fault<\/td><td>13.6 kA for 95 mm\u00b2; 34.3 kA for 240 mm\u00b2, 1 s<\/td><td>Coordinate protection I\u00b2t with conductor and accessory capability.<\/td><td>Complete the protection study.<\/td><\/tr><tr><td class=\"key\">Screen fault<\/td><td>Not supplied in the source matrix<\/td><td>Metallic screen construction is stated, but no numerical screen short-circuit value is supplied.<\/td><td>Close screen bonding and I\u00b2t design.<\/td><\/tr><tr><td class=\"key\">Fire<\/td><td>IEC 60332-3-24 Cat. C<\/td><td>Do not infer Eca, Cca, B2ca or s\/d\/a qualifiers.<\/td><td>Match the exact product declaration.<\/td><\/tr><tr><td class=\"key\">Dynamic service<\/td><td>Not stated<\/td><td>12\u00d7D is a laying factor, not reeling, festoon or drag-chain qualification.<\/td><td>Use a dedicated dynamic cable family.<\/td><\/tr><\/tbody><\/table><\/div><h2>10. Fire and LSZH performance boundary<\/h2><div class=\"grid\"><div class=\"box\"><b>Source-listed flame reference<\/b><br>IEC 60332-3-24 Cat. C is retained exactly from the source. It is a test reference, not a complete CPR declaration.<\/div><div class=\"box\"><b>LSZH construction<\/b><br>LSZH separation and outer sheaths are explicit construction fields. Confirm smoke, acidity, corrosivity and product declaration for the ordered reference.<\/div><div class=\"box\"><b>Project fire strategy<\/b><br>Review cable grouping, fire stopping, penetrations, ventilation, emergency egress and local requirements with the current product file.<\/div><\/div><div class=\"warn\"><b>Do not overclaim:<\/b> the supplied record does not state Eca, Cca, B2ca or s\/d\/a qualifiers.<\/div><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=\"YXC7Z1Y2Z1 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\">YXC7Z1Y2Z1 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, LSZH 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 LSZH sheath selection.<\/div><\/div>\n\n<h2>12. Handling and termination<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 1030\" role=\"img\" aria-label=\"YXC7Z1Y2Z1 installation diagram showing drum pay-off, rollers, aluminium wire armour, LSZH 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\">YXC7Z1Y2Z1 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 LSZH 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><ol><li>Confirm the exact product reference, conductor area, diameter, mass, drum label and end seals before unloading.<\/li><li>Use 12\u00d7D only as the supplied laying factor: 540.0 mm for the 95 mm\u00b2 row and 636.0 mm for the 240 mm\u00b2 rows.<\/li><li>Protect the LSZH sheath and aluminium wires from crushing, uncontrolled twist, sharp entries and local abrasion.<\/li><li>Prepare the 20.3\/35 kV termination with the correct screen, XLPE stress-control, sheath and armour-entry dimensions.<\/li><li>Verify conductor resistance, screen continuity, armour continuity\/bonding, insulation\/sheath tests and project-specified MV tests before energisation.<\/li><\/ol><h2>13. Selection comparison for engineers<\/h2><h3>Source-based selection comparison<\/h3><div class=\"scroll\"><table><thead><tr><th>Requirement<\/th><th>Source 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>Cu \/ XLPE \/ copper screen \/ LSZH \/ round Al-wire armour \/ LSZH<\/td><td>Confirm system earthing, formation, bonding, protection and accessories.<\/td><td>Candidate after exact-size release.<\/td><\/tr><tr><td class=\"key\">95 mm\u00b2<\/td><td>45.0 mm OD; 2700 kg\/km; 434 A air flat; 285 A buried trefoil<\/td><td>Check voltage drop, thermal correction, fault duty, pulling and termination.<\/td><td>Use Ref 10564587.<\/td><\/tr><tr><td class=\"key\">240 mm\u00b2<\/td><td>53.0 mm OD; 4530 kg\/km; 641 A air flat; 469 A buried trefoil<\/td><td>Three source references are preserved; identify the exact row on the order.<\/td><td>Use Ref 10563510 or 10567304 as confirmed.<\/td><\/tr><tr><td class=\"key\">LSZH fixed route<\/td><td>LSZH separation and outer sheath; IEC 60332-3 Cat. C<\/td><td>Confirm current fire declaration, smoke, corrosive-gas and route requirements.<\/td><td>Do not infer CPR class.<\/td><\/tr><tr><td class=\"key\">Reeling \/ festoon \/ drag chain<\/td><td>12\u00d7D laying factor only<\/td><td>Cycles, torsion, acceleration and dynamic bend radius are not supplied.<\/td><td>Select a dedicated dynamic cable.<\/td><\/tr><\/tbody><\/table><\/div><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 900\" role=\"img\" aria-label=\"YXC7Z1Y2Z1 engineering selection flow for a single-core 20.3\/35 kV copper XLPE aluminium-wire-armoured LSZH 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\">YXC7Z1Y2Z1 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\">LSZH separation sheath<\/text><text x=\"525\" y=\"350\" font-size=\"18\">single Al wire armour<\/text><text x=\"525\" y=\"385\" font-size=\"18\">LSZH 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\">LSZH 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><h2>14. Failure-mode controls<\/h2><div class=\"grid\"><div class=\"warn\"><b>Reference confusion:<\/b> the 240 mm\u00b2 row has three supplied Nexans references; do not collapse them without confirmation.<\/div><div class=\"warn\"><b>Screen assumption:<\/b> a copper screen construction is not the same as a published screen short-circuit current.<\/div><div class=\"warn\"><b>Formation substitution:<\/b> 641 A air-flat and 469 A buried-trefoil values cannot be transferred to other formations.<\/div><div class=\"warn\"><b>Radius misuse:<\/b> 12\u00d7D is a laying factor, not a dynamic-service qualification.<\/div><div class=\"warn\"><b>Fire substitution:<\/b> IEC 60332-3 Cat. C and LSZH do not automatically establish a CPR class.<\/div><div class=\"warn\"><b>Dynamic misuse:<\/b> fixed-route high-voltage cable is not automatically suitable for reeling or energy chains.<\/div><\/div><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 YXC7Z1Y2Z1 size automatically TSEK, IECEx, ATEX, EAC or fire-certified. The exact conductor, screen, LSZH 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 \/ LSZH \/ 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><h3>Source and revision audit<\/h3><div class=\"scroll\"><table><thead><tr><th>Source<\/th><th>Reference \/ use<\/th><th>Status and limitation<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Nexans family page<\/td><td>https:\/\/www.nexans.com.tr\/en\/products\/xlpe-insulated-medium-voltage\/copper-conductor\/YXC7Z1Y2Z136402.html<\/td><td>Confirms YXC7Z1Y2Z1 20.3\/35 kV, TSEK, LSZH construction, 95 and 240 mm\u00b2 family rows and three product references.<\/td><\/tr><tr><td class=\"key\">Nexans 95 mm\u00b2 page<\/td><td>https:\/\/www.nexans.com.tr\/tr\/products\/xlpe-insulated-medium-voltage\/copper-conductor\/YXC7Z1Y2Z136402\/product~10564587~.html<\/td><td>Official cross-check for Ref 10564587 and the 95 mm\u00b2 row.<\/td><\/tr><tr><td class=\"key\">Nexans 240 mm\u00b2 pages<\/td><td>https:\/\/www.nexans.com.tr\/tr\/products\/xlpe-insulated-medium-voltage\/copper-conductor\/YXC7Z1Y2Z136402\/product~10563510~.html \/ https:\/\/www.nexans.com.tr\/en\/products\/xlpe-insulated-medium-voltage\/copper-conductor\/YXC7Z1Y2Z136402\/product~10567304~.html<\/td><td>Official cross-check for the two 240 mm\u00b2 references; they must not be silently merged.<\/td><\/tr><tr><td class=\"key\">Nexans family PDF<\/td><td>https:\/\/www.nexans.com.tr\/.rest\/catalog\/v1\/family\/pdf\/36402\/YXC7Z1Y2Z1-20-3-35-kV<\/td><td>Official family PDF route; preserve the supplied 8\/4\/26 two-page record as the primary article source.<\/td><\/tr><tr><td class=\"key\">IEC 60332-3-24:2018<\/td><td>https:\/\/webstore.iec.ch\/en\/publication\/32826<\/td><td>Flame-spread context for Category C; not a CPR declaration.<\/td><\/tr><tr><td class=\"key\">IEC 60502-2<\/td><td>https:\/\/webstore.iec.ch\/en\/publication\/95394<\/td><td>General fixed-installation MV reference only; the supplied product standard is National TSEK.<\/td><\/tr><tr><td class=\"key\">User-supplied record<\/td><td>Primary source<\/td><td>All values, construction, page labels, dashes and duplicate 240 mm\u00b2 references are preserved.<\/td><\/tr><\/tbody><\/table><\/div><div class=\"warn\">This article is for preliminary engineering, technical search and comparison. The final Feichun YXC7Z1Y2Z1 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 YXC7Z1Y2Z1 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-YXC7Z1Y2Z1-20-3-35KV-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 YXC7Z1Y2Z1 20.3\/35 kV record. The construction is copper conductor, semiconducting XLPE screens, XLPE insulation, crape tape, concentric copper screen, LSZH separation sheath, single-layer round aluminium wires and LSZH outer sheath. The article preserves all three supplied product references, including the two separate 240 mm\u00b2 rows.","protected":false},"author":1,"featured_media":25263,"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":[66,94,56,27157],"tags":[16,111,17],"class_list":["post-25262","post","type-post","status-publish","format-standard","has-post-thumbnail","category-common-problems-encountered-in-cable-applications","category-din-vde-0250-mining-cable","category-reeling-cable","category-27157","tag-din-vde-0250","tag-mining-cable","tag-reeling-cable","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25262","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=25262"}],"version-history":[{"count":2,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25262\/revisions"}],"predecessor-version":[{"id":25268,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25262\/revisions\/25268"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/25263"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=25262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=25262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=25262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":25262,"date":"2026-08-04T14:00:26","date_gmt":"2026-08-04T06:00:26","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=25262"},"modified":"2026-08-04T14:00:30","modified_gmt":"2026-08-04T06:00:30","slug":"yxc7z1y2z1-20-3-35-kv-single-core-xlpe-cable-with-lszh-sheaths-and-round-aluminium-wire-armour","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/yxc7z1y2z1-20-3-35-kv-single-core-xlpe-cable-with-lszh-sheaths-and-round-aluminium-wire-armour\/","title":{"rendered":"YXC7Z1Y2Z1 20.3\/35 kV \u2014 Single-Core XLPE Cable with LSZH Sheaths and Round Aluminium-Wire Armour"},"content":{"rendered":"\n