N2XS(F)H 12\/20 kV Cca Cable | Feichun Water-Blocked LSZH Engineering Guide<\/title>\n<meta name=\"description\" content=\"Professional English engineering guide to Feichun N2XS(F)H 12\/20 kV Cca single-core XLPE medium-voltage cable with copper conductor, radial and longitudinal water blocking, LSZH sheath, complete 120\u2013400 mm\u00b2 source matrix, fire performance, installation and verification guidance.\">\n<meta name=\"keywords\" content=\"N2XS(F)H 12\/20 kV, N2XS(F)H Cca, water blocked medium voltage cable, radial longitudinal water blocking, LSZH XLPE cable, IEC 60502-2, IEC 60332-3 Category C, 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}\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:1500px}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:1500px}.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}.good{border-left:7px solid var(--g)}.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{background:#1d4b67;color:#caedff;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\":\"N2XS(F)H 12\/20 kV Cca Water-Blocked Cable Engineering Guide\",\"description\":\"Engineering guide to the N2XS(F)H 120\u2013400 mm\u00b2 reference matrix, radial and longitudinal water blocking, fire performance and fixed MV installation controls.\",\"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>N2XS(F)H 12\/20 kV<\/span><span>Cca<\/span><span>120\u2013400 mm\u00b2<\/span><span>RADIAL + LONGITUDINAL WATER BLOCKING<\/span><span>Cu \/ XLPE \/ LSZH<\/span><span>IEC 60502-2<\/span><\/div><h1>Feichun N2XS(F)H 12\/20 kV \u2014 Cca Water-Blocked LSZH Medium-Voltage Cable<\/h1><p class=\"lead\">A full-English engineering guide to the N2XS(F)H single-core XLPE cable family for fixed medium-voltage networks. The supplied reference identifies class 2 copper conductors, a 12\/20 (24) kV rating, radial and longitudinal water blocking, an LSZH outer sheath, Cca fire performance and complete 120\u2013400 mm\u00b2 electrical and thermal data.<\/p><div class=\"meta\"><span>Uo\/U (Um): 12 \/ 20 (24) kV<\/span><span>Class 2 copper conductor<\/span><span>90 \u00b0C service<\/span><span>250 \u00b0C short circuit<\/span><span>Longitudinally watertight: Yes<\/span><span>IEC 60332-3 Cat. C<\/span><span>IEC 60754-1 \/ -2<\/span><span>IEC 61034-2<\/span><\/div><\/div><\/section>\n<main class=\"wrap\">\n<div class=\"cards\"><div class=\"card\"><div>Voltage class<\/div><div class=\"value\">12\/20 kV<\/div><div>24 kV maximum system-voltage notation in the supplied source.<\/div><\/div><div class=\"card\"><div>Water protection<\/div><div class=\"value\">2-axis<\/div><div>Radial and longitudinal water blocking are explicit construction claims.<\/div><\/div><div class=\"card\"><div>Family matrix<\/div><div class=\"value\">120\u2013400 mm\u00b2<\/div><div>Four complete source rows with dimensions, resistance and ratings.<\/div><\/div><div class=\"card\"><div>Fire \/ sheath<\/div><div class=\"value\">Cca<\/div><div>LSZH sheath, IEC 60332-3 Cat. C, IEC 60754-1\/-2 and IEC 61034-2.<\/div><\/div><\/div>\n<div class=\"toc\"><h3>Contents<\/h3><ol><li>Engineering position<\/li><li>Designation and application logic<\/li><li>Standards and evidence boundary<\/li><li>Complete family specification<\/li><li>Full 120\u2013400 mm\u00b2 source matrix<\/li><li>Layer-by-layer cross-section<\/li><li>Radial and longitudinal water blocking<\/li><li>Electrical, thermal and short-circuit design<\/li><li>Fire performance and LSZH<\/li><li>Fixed-route application architecture<\/li><li>Handling, bending and termination<\/li><li>Selection comparison<\/li><li>Failure mode analysis<\/li><li>Feichun certification scope<\/li><li>Source and data audit<\/li><\/ol><\/div>\n\n<h2>1. Engineering position: a water-aware MV cable for fixed energy networks<\/h2>\n<div class=\"note\"><b>N2XS(F)H 12\/20 kV is a single-core, XLPE-insulated, copper-conductor medium-voltage cable with an LSZH outer sheath and an explicitly stated radial and longitudinal water-blocking construction.<\/b> The supplied application is fixed energy-network service in residential or industrial areas, underground routes and cable ducts, including networks with sudden load changes where low dielectric losses are useful.<\/div>\n<div class=\"grid\"><div class=\"box\"><b>Electrical platform<\/b><br>The class 2 stranded copper conductor carries phase current. The conductor screen, XLPE insulation and insulation screen form the controlled radial dielectric system required for MV stress management.<\/div><div class=\"box\"><b>Water-blocking platform<\/b><br>Radial and longitudinal water movement are different failure modes. A swelling tape and metallic screen construction can limit propagation, but end seals, joints, sheath integrity and drainage still determine installed performance.<\/div><div class=\"box\"><b>Fire-performance platform<\/b><br>The supplied family title states Cca. The source separately lists IEC 60332-3 Cat. C, IEC 60754-1\/-2 and IEC 61034-2; these references answer different fire, smoke and gas questions.<\/div><div class=\"box\"><b>System platform<\/b><br>Single-core formation, screen bonding, cleats, terminations, induced-current control, current rating and short-circuit duty must be designed as one cable system rather than selected from the conductor area alone.<\/div><\/div>\n<div class=\"warn\"><b>Data boundary:<\/b> the complete matrix and characteristic values below preserve the supplied Nexans reference. They are an engineering benchmark for Feichun development, not an invented Feichun manufacturing drawing, catalogue code or certificate. The released Feichun construction must have its own controlled data and test evidence.<\/div>\n\n<h2>2. N2XS(F)H designation and application logic<\/h2>\n<div class=\"scroll\"><table><thead><tr><th>Designation \/ field<\/th><th>Engineering reading<\/th><th>Design consequence<\/th><th>Data status<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">N<\/td><td>European \/ national designation family.<\/td><td>Read the complete construction and standard; the first letter is not a sufficient purchase specification.<\/td><td class=\"source\">Designation context<\/td><\/tr><tr><td class=\"key\">2X<\/td><td>XLPE insulation family.<\/td><td>Coordinate the dielectric system with 12\/20 (24) kV accessories and test requirements.<\/td><td class=\"source\">Reference construction<\/td><\/tr><tr><td class=\"key\">S<\/td><td>Copper metallic screen construction.<\/td><td>Screen continuity, bonding, earth-fault duty and induced-current control are mandatory design items.<\/td><td class=\"source\">Reference construction<\/td><\/tr><tr><td class=\"key\">(F)<\/td><td>Used here as part of the source product designation whose construction explicitly states radial and longitudinal water blocking.<\/td><td>Do not decode the parenthetical letter beyond the current controlled product document; verify the actual water-blocking materials and test basis.<\/td><td class=\"source\">Source designation + construction<\/td><\/tr><tr><td class=\"key\">H<\/td><td>Halogen-free \/ LSZH sheath family.<\/td><td>Supports low-smoke and halogen-related fire strategy; exact CPR performance remains product-specific.<\/td><td class=\"source\">Reference construction<\/td><\/tr><tr><td class=\"key\">12\/20 (24) kV<\/td><td>Rated voltage Uo\/U with Um notation.<\/td><td>Check system earthing, insulation coordination, terminations, joints and testing against the project voltage class.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">120\u2013400 mm\u00b2<\/td><td>Four listed copper-conductor nominal areas.<\/td><td>Choose by thermal capacity, voltage drop, fault duty, pulling mechanics and accessory availability\u2014not current alone.<\/td><td class=\"source\">Supplied matrix<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"grid\"><div class=\"box\"><b>Suitable service logic<\/b><br>Fixed distribution feeders, transformer connections, industrial plants, switchgear, process facilities, residential or industrial areas, underground routes and ducts when accessories and installation conditions are compatible.<\/div><div class=\"box\"><b>Why the water-blocked design matters<\/b><br>Wet ducts, groundwater, damaged sheath sections and long cable runs can turn a local defect into a route-wide dielectric and corrosion risk. Longitudinal water blocking addresses propagation; it does not remove the need for sealing.<\/div><div class=\"box\"><b>Do not overextend the designation<\/b><br>This fixed-installation reference is not automatically a mining trailing cable, crane reeling cable, festoon cable, drag-chain cable, continuous-torsion cable, shipboard cable or submarine cable.<\/div><div class=\"box\"><b>Port-engineering interpretation<\/b><br>It can be evaluated for fixed shore-side MV feeders serving port substations and industrial loads. A moving STS, RTG or shipboard route needs a cable family and accessory system designed for motion, torsion and the applicable special standard.<\/div><\/div>\n\n<h2>3. Standards and evidence boundary<\/h2>\n<div class=\"scroll\"><table><thead><tr><th>Reference<\/th><th>What it addresses<\/th><th>How to use it in an engineering decision<\/th><th>Evidence boundary<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">IEC 60502-2<\/td><td>Product standard listed by the source for extruded-insulation MV power cables.<\/td><td>Use for construction, dimensions and test-basis review for the 12\/20 (24) kV fixed-installation class.<\/td><td class=\"source\">Confirm current adopted edition and the exact Feichun conformity file.<\/td><\/tr><tr><td class=\"key\">IEC 60332-3 Cat. C<\/td><td>Bunched-cable vertical flame-spread test category.<\/td><td>Use as a flame-spread test reference; do not equate it with Cca or with a complete route fire strategy.<\/td><td class=\"source\">Source-listed test reference; current report required.<\/td><\/tr><tr><td class=\"key\">IEC 60754-1; IEC 60754-2<\/td><td>Halogen-acid-gas \/ corrosivity-related fire-performance references.<\/td><td>Use when smoke and corrosive-gas exposure are part of the building, tunnel or plant safety case.<\/td><td class=\"source\">Source-listed; compound and report must match the ordered product.<\/td><\/tr><tr><td class=\"key\">IEC 61034-2<\/td><td>Smoke-density test reference.<\/td><td>Combine with cable grouping, ventilation, enclosure geometry and emergency-egress requirements.<\/td><td class=\"source\">Source-listed; not a standalone CPR declaration.<\/td><\/tr><tr><td class=\"key\">Cca<\/td><td>Fire-performance class stated in the supplied family title.<\/td><td>Place the exact class in the project fire schedule only after checking the current product-specific declaration and qualifiers.<\/td><td class=\"source\">The supplied data does not state s1, d0 or a1 qualifiers.<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"note\"><b>Important standard-scope distinction:<\/b> the official IEC 60502-2 record describes extruded-insulation cables from 6 kV up to 30 kV for fixed installations and notes that special service conditions\u2014such as mining, nuclear containment, submarine and shipboard use\u2014are outside that general scope. That supports the fixed MV application logic here; it is also why a port crane travel cable cannot be selected from this data sheet merely because its voltage is similar.<\/div>\n\n<h2>4. Complete N2XS(F)H 12\/20 kV Cca family specification<\/h2>\n<div class=\"note\"><b>Source values are shown in the second column; engineering interpretation is intentionally separate.<\/b> A value labelled \u201cconfirm\u201d is not a blank to be filled from another size, supplier or previous cable family.<\/div>\n<div class=\"scroll\"><table><thead><tr><th>Specification field<\/th><th>Reference value<\/th><th>Engineering interpretation<\/th><th>Data status<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Product designation<\/td><td class=\"source\">N2XS(F)H 12\/20 kV Cca<\/td><td>Single-core XLPE-insulated medium-voltage cable with a copper conductor and LSZH outer sheath; the source title specifies radial and longitudinal water blocking.<\/td><td class=\"source\">Supplied \/ Nexans family reference<\/td><\/tr><tr><td class=\"key\">Product description<\/td><td class=\"source\">12\/20 kV XLPE insulated single core cables with copper conductor and LSZH outer sheath with radial and longitudinal water blocking<\/td><td>A fixed-installation MV architecture in which water blocking is a primary selection feature for underground and duct routes.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Product standard<\/td><td class=\"source\">IEC 60502-2<\/td><td>The source lists IEC 60502-2. Confirm the project-adopted edition, conformity route and accessory standard before release.<\/td><td class=\"source\">Supplied source \u2014 current edition to be confirmed<\/td><\/tr><tr><td class=\"key\">Conductor material<\/td><td class=\"source\">Copper<\/td><td>Low-resistance phase conductor for medium-voltage distribution and industrial feeders.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Conductor flexibility<\/td><td class=\"source\">Class 2<\/td><td>Stranded construction supports installation handling; it does not create a continuous-flex or reeling rating.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Number of cores<\/td><td class=\"source\">1<\/td><td>Single-core system; phase formation, screen bonding, induced current and cleat forces are installation-level design inputs.<\/td><td class=\"source\">Official product page \/ PDF<\/td><\/tr><tr><td class=\"key\">Rated Voltage Uo\/U (Um)<\/td><td class=\"source\">12 \/ 20 (24) kV<\/td><td>The 24 kV Um value is the maximum system-voltage notation supplied for the cable family.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Operating temperature, range<\/td><td class=\"source\">-20 … 90 \u00b0C<\/td><td>The supplied usage range and current official product page record; ambient, laying, accessory and sheath limits still govern the complete installation.<\/td><td class=\"source\">Supplied source \/ current official page<\/td><\/tr><tr><td class=\"key\">Older official PDF operating range<\/td><td class=\"derived\">-20 … 60 \u00b0C<\/td><td>The older official family PDF record contains a different operating-range value. It must not be merged with the supplied 90 \u00b0C record; confirm the controlled revision before procurement.<\/td><td class=\"derived\">Older official PDF \u2014 Generated 7\/11\/25<\/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 supplied characteristics and current official product page.<\/td><td class=\"source\">Supplied source \/ current official page<\/td><\/tr><tr><td class=\"key\">Short-circuit max. conductor temperature<\/td><td class=\"source\">250 \u00b0C<\/td><td>Use with the exact protection clearing time, conductor I\u00b2t calculation and accessory short-circuit capability.<\/td><td class=\"source\">Official product page \/ PDF<\/td><\/tr><tr><td class=\"key\">Longitudinally watertight<\/td><td class=\"source\">Yes<\/td><td>Longitudinal water propagation is a declared design characteristic; cable ends, joints and terminations still require sealing control.<\/td><td class=\"source\">Supplied source \/ official page<\/td><\/tr><tr><td class=\"key\">Radial water blocking<\/td><td class=\"source\">Yes<\/td><td>The product description explicitly states radial and longitudinal water blocking; the released test basis must be matched to the ordered design.<\/td><td class=\"source\">Supplied source \/ official page<\/td><\/tr><tr><td class=\"key\">Insulation<\/td><td class=\"source\">XLPE<\/td><td>The principal solid dielectric layer for the 12\/20 kV voltage 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>Electric-field transition between conductor and XLPE insulation; preparation quality is critical at MV accessories.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Insulation screen \/ water-blocking build<\/td><td class=\"source\">Semi-conducting compound (XLPE) + water swelling tape + copper wires with counter helix of copper tape<\/td><td>The source construction places the swelling tape and metallic screen system in the insulation-screen region; exact layer thickness and lay are controlled-drawing items.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Outer sheath<\/td><td class=\"source\">LSZH<\/td><td>Low-smoke, halogen-free sheath family; exact compound, colour, thickness and CPR declaration must match the released product.<\/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>A bunched-cable vertical flame-spread test reference; it is not a substitute for the Cca classification or its supporting declaration.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Halogen free<\/td><td class=\"source\">IEC 60754-1; IEC 60754-2<\/td><td>Halogen-acid-gas and corrosivity-related references listed by the source; use the current test report for the ordered compound.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Smoke density<\/td><td class=\"source\">IEC 61034-2<\/td><td>Smoke-performance test reference listed by the source; route geometry and cable grouping remain part of the fire assessment.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Fire performance class<\/td><td class=\"source\">Cca<\/td><td>Cca is the fire-class designation shown in the supplied family title. The source title alone does not state the smoke, droplet or acidity qualifiers.<\/td><td class=\"source\">Supplied source \u2014 qualifiers require current DoP<\/td><\/tr><tr><td class=\"key\">Official DoP fire declaration<\/td><td class=\"source\">Cca-s1,d2,a1<\/td><td>The official family DoP record declares Cca-s1,d2,a1 according to EN 50575:2014+A1:2016 for the listed product family references; verify the exact ordered product and current declaration.<\/td><td class=\"source\">Official DoP \u2014 family record<\/td><\/tr><tr><td class=\"key\">Application<\/td><td class=\"source\">Energy networks with sudden load changes; residential or industrial areas; underground or in ducts<\/td><td>Use for fixed MV routes when voltage, thermal, mechanical, water, fire and accessory conditions are all closed by design.<\/td><td class=\"source\">Supplied source<\/td><\/tr><tr><td class=\"key\">Source record<\/td><td class=\"source\">Generated 8\/4\/26 \u2014 www.nexans.com.tr \u2014 Page 1 \/ 2<\/td><td>Preserved from the supplied reference; confirm the controlled document revision before procurement.<\/td><td class=\"source\">Supplied source metadata<\/td><\/tr><tr><td class=\"key\">Source record continuation<\/td><td class=\"source\">N2XS(F)H 12\/20 kV Cca \u2014 Page 2 \/ 2<\/td><td>The supplied matrix and characteristics are treated as the user reference record for this article.<\/td><td class=\"source\">Supplied source metadata<\/td><\/tr><tr><td class=\"key\">Official PDF record<\/td><td class=\"derived\">Generated 7\/11\/25 \u2014 Page 1 \/ 2 and Page 2 \/ 2<\/td><td>The official family PDF is retained as a separate revision record because its operating range differs from the supplied\/current-page value.<\/td><td class=\"derived\">Older official PDF metadata<\/td><\/tr><tr><td class=\"key\">Bending factor when laying<\/td><td class=\"derived\">Not stated in the supplied Cca reference<\/td><td>No minimum laying radius is derived here. Obtain the released Feichun installation factor and accessory instructions for the ordered size.<\/td><td class=\"derived\">Not supplied \u2014 do not infer<\/td><\/tr><\/tbody><\/table><\/div>\n\n<h2>5. Full source matrix \u2014 N2XS(F)H 12\/20 kV Cca<\/h2>\n<p>The following matrix preserves every supplied row and field. \u201cPerm. current rating\u201d values apply only to the stated ambient and flat formation in the source; they are not universal ampacity values.<\/p>\n<div class=\"scroll\"><table class=\"matrix\"><thead><tr><th>Cross section<br>[mm\u00b2]<\/th><th>Nom.<br>outer diam.<br>[mm]<\/th><th>Max. DC Resist.<br>Cond. 20 \u00b0C<br>[Ohm\/km]<\/th><th>short circuit<br>conductor 1 s<br>[kA]<\/th><th>Reactance<br>at 50 Hz<br>[Ohm\/km]<\/th><th>Voltage<br>Drop<br>[V\/A.km]<\/th><th>Perm. current<br>rating in air<br>30 \u00b0C – flat<br>formation [A]<\/th><th>Perm. current<br>rating buried<br>20 \u00b0C – flat<br>formation [A]<\/th><th>Nexans<br>Ref.<\/th><\/tr><\/thead><tbody><tr><td class=\"source\">120<\/td><td class=\"source\">32.6<\/td><td class=\"source\">0.153<\/td><td class=\"source\">17.2<\/td><td class=\"source\">0.12<\/td><td class=\"source\">0.4<\/td><td class=\"source\">500<\/td><td class=\"source\">323<\/td><td class=\"source\">10582786<\/td><\/tr><tr><td class=\"source\">185<\/td><td class=\"source\">34.3<\/td><td class=\"source\">0.0991<\/td><td class=\"source\">26.5<\/td><td class=\"source\">0.11<\/td><td class=\"source\">0.3<\/td><td class=\"source\">637<\/td><td class=\"source\">406<\/td><td class=\"source\">10581520<\/td><\/tr><tr><td class=\"source\">300<\/td><td class=\"source\">39.7<\/td><td class=\"source\">0.0601<\/td><td class=\"source\">42.9<\/td><td class=\"source\">0.1<\/td><td class=\"source\">0.2<\/td><td class=\"source\">846<\/td><td class=\"source\">526<\/td><td class=\"source\">10582784<\/td><\/tr><tr><td class=\"source\">400<\/td><td class=\"source\">42.3<\/td><td class=\"source\">0.047<\/td><td class=\"source\">57.2<\/td><td class=\"source\">0.1<\/td><td class=\"source\">0.2<\/td><td class=\"source\">938<\/td><td class=\"source\">590<\/td><td class=\"source\">10582785<\/td><\/tr><\/tbody><\/table><\/div>\n<p class=\"small\">The matrix is reproduced from the supplied N2XS(F)H 12\/20 kV Cca reference. Product drawings, dimensions and ratings are indicative until the current controlled manufacturer document and project calculation are accepted.<\/p>\n\n<h2>6. Layer-by-layer cross-section \u2014 why the water-blocking detail is important<\/h2>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 1320\" role=\"img\" aria-label=\"N2XS(F)H 12\/20 kV single-core cable cross-section showing copper conductor, XLPE, water swelling tape, copper screen and LSZH sheath\">\n<defs>\n<radialGradient id=\"xsfh-sheath\" cx=\"29%\" cy=\"23%\"><stop stop-color=\"#8d313b\"\/><stop offset=\".68\" stop-color=\"#4b151f\"\/><stop offset=\"1\" stop-color=\"#17070b\"\/><\/radialGradient>\n<radialGradient id=\"xsfh-xlpe\" cx=\"31%\" cy=\"24%\"><stop stop-color=\"#f8ebc9\"\/><stop offset=\".72\" stop-color=\"#d5bd8a\"\/><stop offset=\"1\" stop-color=\"#92764c\"\/><\/radialGradient>\n<radialGradient id=\"xsfh-cu\" cx=\"30%\" cy=\"24%\"><stop stop-color=\"#f1b26e\"\/><stop offset=\".65\" stop-color=\"#bf682b\"\/><stop offset=\"1\" stop-color=\"#703313\"\/><\/radialGradient>\n<pattern id=\"xsfh-strands\" width=\"18\" height=\"18\" patternUnits=\"userSpaceOnUse\"><circle cx=\"4\" cy=\"4\" r=\"3.4\" fill=\"#f4c383\"\/><circle cx=\"13\" cy=\"4\" r=\"3.4\" fill=\"#b75c26\"\/><circle cx=\"8.5\" cy=\"13\" r=\"3.4\" fill=\"#d67a33\"\/><\/pattern>\n<pattern id=\"xsfh-screen\" width=\"20\" height=\"20\" patternUnits=\"userSpaceOnUse\"><path d=\"M0 3 L20 17 M-5 3 L15 17 M5 -3 L25 11\" stroke=\"#d9b34c\" stroke-width=\"4\"\/><path d=\"M0 17 L20 3 M-5 17 L15 3 M5 23 L25 9\" stroke=\"#976d20\" stroke-width=\"3\"\/><\/pattern>\n<pattern id=\"xsfh-water\" width=\"18\" height=\"18\" patternUnits=\"userSpaceOnUse\"><path d=\"M2 2 C6 8 12 8 16 2 M2 11 C6 17 12 17 16 11\" fill=\"none\" stroke=\"#55dff7\" stroke-width=\"4\"\/><\/pattern>\n<marker id=\"xsfh-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=\"1320\" fill=\"#06131b\"\/>\n<text x=\"62\" y=\"67\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">N2XS(F)H 12\/20 kV \u2014 source construction sequence<\/text>\n<text x=\"62\" y=\"107\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">Single copper core \u00b7 class 2 stranded conductor \u00b7 XLPE insulation \u00b7 radial and longitudinal water blocking \u00b7 copper wire \/ tape screen \u00b7 LSZH sheath.<\/text>\n<text x=\"62\" y=\"141\" fill=\"#ffaaa5\" font-family=\"Arial\" font-size=\"16\">Illustrative engineering cross-section, not a manufacturing drawing. Exact layer thicknesses, screen coverage and lay dimensions require the controlled Feichun release.<\/text>\n<g transform=\"translate(640 755)\">\n <circle r=\"480\" fill=\"url(#xsfh-sheath)\" stroke=\"#b65963\" stroke-width=\"14\"\/>\n <circle r=\"414\" fill=\"url(#xsfh-screen)\" stroke=\"#efcc65\" stroke-width=\"12\"\/>\n <circle r=\"379\" fill=\"url(#xsfh-water)\" stroke=\"#55dff7\" stroke-width=\"10\" stroke-dasharray=\"12 9\"\/>\n <circle r=\"350\" fill=\"#263941\" stroke=\"#7c9aa3\" stroke-width=\"7\" stroke-dasharray=\"7 10\"\/>\n <circle r=\"326\" fill=\"#5a7d86\" stroke=\"#a3c9cf\" stroke-width=\"7\" stroke-dasharray=\"7 10\"\/>\n <circle r=\"300\" fill=\"url(#xsfh-xlpe)\" stroke=\"#ffe8a5\" stroke-width=\"10\"\/>\n <circle r=\"163\" fill=\"#233941\" stroke=\"#8baab2\" stroke-width=\"7\" stroke-dasharray=\"8 10\"\/>\n <circle r=\"145\" fill=\"#e6d597\" stroke=\"#fff0b8\" stroke-width=\"8\"\/>\n <circle r=\"95\" fill=\"url(#xsfh-cu)\" stroke=\"#f5c083\" stroke-width=\"8\"\/>\n <circle r=\"74\" fill=\"url(#xsfh-strands)\" stroke=\"#ffe0a8\" stroke-width=\"5\"\/>\n <path d=\"M-60 0 C-42 -50 42 -50 60 0 C42 50 -42 50 -60 0 Z\" fill=\"none\" stroke=\"#8a4a1d\" stroke-width=\"5\" opacity=\".7\"\/>\n<\/g>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <line x1=\"950\" y1=\"300\" x2=\"1390\" y2=\"170\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#xsfh-arrow)\"\/><text x=\"1410\" y=\"165\" font-size=\"24\" font-weight=\"700\" fill=\"#ff9c9f\">1. LSZH outer sheath<\/text><text x=\"1410\" y=\"198\" font-size=\"18\">Low-smoke, halogen-free outer protection; fire and smoke claims remain product-specific.<\/text>\n <line x1=\"900\" y1=\"420\" x2=\"1390\" y2=\"320\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#xsfh-arrow)\"\/><text x=\"1410\" y=\"315\" font-size=\"24\" font-weight=\"700\" fill=\"#e8c37b\">2. Copper wires + counter-helix copper tape<\/text><text x=\"1410\" y=\"348\" font-size=\"18\">Metallic screen system; continuity and fault-current duty are installation controls.<\/text>\n <line x1=\"865\" y1=\"520\" x2=\"1390\" y2=\"475\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#xsfh-arrow)\"\/><text x=\"1410\" y=\"470\" font-size=\"24\" font-weight=\"700\" fill=\"#55dff7\">3. Water swelling tape<\/text><text x=\"1410\" y=\"503\" font-size=\"18\">Water-blocking element identified in the supplied insulation-screen construction.<\/text>\n <line x1=\"825\" y1=\"615\" x2=\"1390\" y2=\"630\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#xsfh-arrow)\"\/><text x=\"1410\" y=\"625\" font-size=\"24\" font-weight=\"700\" fill=\"#9ce9f3\">4. Semi-conducting insulation screen<\/text><text x=\"1410\" y=\"658\" font-size=\"18\">Controls the radial electric-field transition at the XLPE interface.<\/text>\n <line x1=\"415\" y1=\"585\" x2=\"70\" y2=\"365\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#xsfh-arrow)\"\/><text x=\"62\" y=\"298\" font-size=\"24\" font-weight=\"700\" fill=\"#f3df9c\">5. XLPE insulation<\/text><text x=\"62\" y=\"331\" font-size=\"18\">Solid dielectric layer for the 12\/20 (24) kV rated-voltage notation.<\/text>\n <line x1=\"395\" y1=\"735\" x2=\"70\" y2=\"690\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#xsfh-arrow)\"\/><text x=\"62\" y=\"635\" font-size=\"24\" font-weight=\"700\" fill=\"#8ec7d0\">6. Semi-conducting conductor screen<\/text><text x=\"62\" y=\"668\" font-size=\"18\">Transition layer around the circular stranded copper conductor.<\/text>\n <line x1=\"420\" y1=\"850\" x2=\"70\" y2=\"1010\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#xsfh-arrow)\"\/><text x=\"62\" y=\"955\" font-size=\"24\" font-weight=\"700\" fill=\"#e8a568\">7. Copper conductor, class 2<\/text><text x=\"62\" y=\"988\" font-size=\"18\">Nominal areas in the family matrix: 120, 185, 300 and 400 mm\u00b2.<\/text>\n <path d=\"M280 1060 H1040\" stroke=\"#55dff7\" stroke-width=\"4\" marker-end=\"url(#xsfh-arrow)\"\/><text x=\"280\" y=\"1105\" font-size=\"23\" font-weight=\"700\" fill=\"#55dff7\">Water-blocking architecture spans the cable system \u2014 radial ingress and longitudinal propagation require different checks.<\/text>\n <text x=\"1040\" y=\"1230\" font-size=\"20\" font-weight=\"700\" fill=\"#ffaaa5\">Not to scale \u00b7 use the released construction drawing for accessories and stripping dimensions.<\/text>\n<\/g><\/svg><\/div>\n<p>The supplied construction sequence is: copper conductor; semi-conducting conductor screen; XLPE insulation; semi-conducting insulation screen; water swelling tape; copper wires with counter helix of copper tape; and LSZH outer sheath. The swelling tape is shown as a functional layer, not as a claim that every geometric detail is identical to the illustrative drawing.<\/p>\n<div class=\"grid\"><div class=\"box\"><b>Conductor: copper, class 2<\/b><br>Stranding improves installation handling. It does not remove the need to control pulling load, sidewall pressure, radius, cleat spacing and termination preparation.<\/div><div class=\"box\"><b>Conductor and insulation screens<\/b><br>These layers control the radial electric-field transition. Screen stripping, semicon removal and stress-control interface quality are critical at MV joints and terminations.<\/div><div class=\"box\"><b>Water swelling tape<\/b><br>The source places a water swelling tape in the insulation-screen construction. Its material, overlap, swelling response and test method must be verified in the released Feichun drawing and report.<\/div><div class=\"box\"><b>Copper screen with counter helix<\/b><br>The screen is an electrical and fault-path component. Its continuity, bonding arrangement, induced-current loss and short-circuit duty must be calculated and tested.<\/div><\/div>\n\n<h2>7. Radial and longitudinal water blocking \u2014 an engineer\u2019s failure-path model<\/h2>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 1020\" role=\"img\" aria-label=\"Engineering diagram showing radial and longitudinal water blocking in an N2XS(F)H medium-voltage cable\">\n<defs>\n<marker id=\"water-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0 L12 4 L0 8 Z\" fill=\"#dcebf0\"\/><\/marker>\n<linearGradient id=\"water-sheath\" x1=\"0\" x2=\"1\"><stop stop-color=\"#6f2731\"\/><stop offset=\"1\" stop-color=\"#260b10\"\/><\/linearGradient>\n<pattern id=\"water-tape\" width=\"22\" height=\"22\" patternUnits=\"userSpaceOnUse\"><path d=\"M1 3 C6 12 16 12 21 3 M1 15 C6 24 16 24 21 15\" fill=\"none\" stroke=\"#55dff7\" stroke-width=\"5\"\/><\/pattern>\n<\/defs>\n<rect width=\"1900\" height=\"1020\" fill=\"#06131b\"\/>\n<text x=\"60\" y=\"66\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">N2XS(F)H water-blocking logic \u2014 two axes, two failure paths<\/text>\n<text x=\"60\" y=\"105\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">Radial water blocking limits movement from the cable perimeter toward the dielectric system; longitudinal water blocking limits propagation along the cable route.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <rect x=\"70\" y=\"190\" width=\"780\" height=\"700\" rx=\"18\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/>\n <text x=\"120\" y=\"255\" font-size=\"27\" font-weight=\"700\" fill=\"#55dff7\">A. Radial water ingress<\/text>\n <text x=\"120\" y=\"292\" font-size=\"17\">Conceptual cross-section: external water approaches the screen \/ swelling-tape system.<\/text>\n <circle cx=\"440\" cy=\"548\" r=\"245\" fill=\"url(#water-sheath)\" stroke=\"#b65963\" stroke-width=\"11\"\/><circle cx=\"440\" cy=\"548\" r=\"196\" fill=\"#8a6b2b\" stroke=\"#e8c37b\" stroke-width=\"10\"\/><circle cx=\"440\" cy=\"548\" r=\"164\" fill=\"url(#water-tape)\" stroke=\"#55dff7\" stroke-width=\"9\"\/><circle cx=\"440\" cy=\"548\" r=\"132\" fill=\"#d5bd8a\" stroke=\"#ffe8a5\" stroke-width=\"9\"\/><circle cx=\"440\" cy=\"548\" r=\"70\" fill=\"#bf682b\" stroke=\"#f5c083\" stroke-width=\"8\"\/>\n <path d=\"M115 430 L205 465\" stroke=\"#55dff7\" stroke-width=\"9\" marker-end=\"url(#water-arrow)\"\/><path d=\"M115 545 L205 545\" stroke=\"#55dff7\" stroke-width=\"9\" marker-end=\"url(#water-arrow)\"\/><path d=\"M115 660 L205 625\" stroke=\"#55dff7\" stroke-width=\"9\" marker-end=\"url(#water-arrow)\"\/>\n <text x=\"92\" y=\"390\" font-size=\"20\" fill=\"#9ce9f3\">radial water<\/text><text x=\"94\" y=\"715\" font-size=\"20\" fill=\"#9ce9f3\">ingress direction<\/text>\n <line x1=\"635\" y1=\"430\" x2=\"780\" y2=\"360\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#water-arrow)\"\/><text x=\"565\" y=\"330\" font-size=\"21\" font-weight=\"700\" fill=\"#55dff7\">Water swelling tape<\/text><text x=\"565\" y=\"360\" font-size=\"16\">swelling response must match the released test design<\/text>\n <line x1=\"625\" y1=\"585\" x2=\"780\" y2=\"585\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#water-arrow)\"\/><text x=\"585\" y=\"625\" font-size=\"21\" font-weight=\"700\" fill=\"#e8c37b\">Metallic screen<\/text><text x=\"585\" y=\"655\" font-size=\"16\">screen continuity and sheath integrity remain essential<\/text>\n <rect x=\"120\" y=\"780\" width=\"650\" height=\"68\" rx=\"10\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"145\" y=\"822\" font-size=\"17\" fill=\"#ffaaa5\">Do not describe LSZH alone as a water barrier; verify the complete cable construction.<\/text>\n\n <rect x=\"900\" y=\"190\" width=\"930\" height=\"700\" rx=\"18\" fill=\"#0b202b\" stroke=\"#62df9c\" stroke-width=\"4\"\/>\n <text x=\"950\" y=\"255\" font-size=\"27\" font-weight=\"700\" fill=\"#62df9c\">B. Longitudinal water propagation<\/text>\n <text x=\"950\" y=\"292\" font-size=\"17\">Conceptual cable length: a local sheath or end-seal defect must not become a route-wide failure.<\/text>\n <rect x=\"1010\" y=\"435\" width=\"700\" height=\"180\" rx=\"90\" fill=\"url(#water-sheath)\" stroke=\"#b65963\" stroke-width=\"10\"\/><rect x=\"1065\" y=\"475\" width=\"590\" height=\"100\" rx=\"50\" fill=\"#8a6b2b\" stroke=\"#e8c37b\" stroke-width=\"8\"\/><rect x=\"1100\" y=\"494\" width=\"520\" height=\"62\" rx=\"31\" fill=\"url(#water-tape)\" stroke=\"#55dff7\" stroke-width=\"8\"\/>\n <path d=\"M1015 525 H1140\" stroke=\"#55dff7\" stroke-width=\"11\" marker-end=\"url(#water-arrow)\"\/><path d=\"M1705 525 H1580\" stroke=\"#55dff7\" stroke-width=\"11\" marker-end=\"url(#water-arrow)\"\/>\n <path d=\"M1240 465 C1260 415 1300 415 1320 465 C1340 515 1380 515 1400 465\" fill=\"none\" stroke=\"#c7f8ff\" stroke-width=\"13\"\/><path d=\"M1240 585 C1260 635 1300 635 1320 585 C1340 535 1380 535 1400 585\" fill=\"none\" stroke=\"#c7f8ff\" stroke-width=\"13\"\/>\n <line x1=\"1270\" y1=\"710\" x2=\"1270\" y2=\"610\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#water-arrow)\"\/><text x=\"1090\" y=\"760\" font-size=\"21\" font-weight=\"700\" fill=\"#55dff7\">Swelling zone interrupts the longitudinal pathway<\/text><text x=\"1100\" y=\"792\" font-size=\"16\">The actual test method, swelling material and end treatment must be confirmed for the released item.<\/text>\n <path d=\"M950 335 H1780\" stroke=\"#315b6f\" stroke-width=\"3\" stroke-dasharray=\"10 10\"\/><text x=\"955\" y=\"370\" font-size=\"19\" fill=\"#ffaaa5\">Route controls: end seals \u00b7 joint design \u00b7 sheath inspection \u00b7 drainage \u00b7 duct water level \u00b7 screen bonding<\/text>\n <\/g><\/svg><\/div>\n<div class=\"grid\"><div class=\"box\"><b>Radial path<\/b><br>Water can approach from the outside toward the screen and dielectric interfaces after sheath damage, immersion or a wet route. The complete radial barrier claim must be tied to the current design and type-test evidence.<\/div><div class=\"box\"><b>Longitudinal path<\/b><br>Water can travel along interstices or interfaces over the cable length. \u201cLongitudinally watertight: Yes\u201d is useful for route reliability, but a cut end, joint or termination remains a potential entry point.<\/div><div class=\"box\"><b>Water-blocking is not drainage<\/b><br>Water swelling materials limit propagation; they do not replace duct drainage, route grading, end sealing, joint enclosure selection or inspection after installation.<\/div><div class=\"box\"><b>Corrosion and screen reliability<\/b><br>Moisture management protects more than insulation. It also reduces the risk of corrosion, screen discontinuity, accessory contamination and difficult fault-current paths.<\/div><\/div>\n<div class=\"warn\"><b>Commissioning rule:<\/b> inspect and seal both cable ends before the cable enters the route. Record sheath condition, water-blocking construction, joint kits, screen bonding, drainage condition and any exposure to standing water.<\/div>\n\n<h2>8. Electrical, thermal and short-circuit design<\/h2>\n<div class=\"grid\"><div class=\"box\"><b>Air versus buried ratings<\/b><br>The source matrix gives air ratings at 30 \u00b0C and buried ratings at 20 \u00b0C, both in flat formation. These are boundary conditions, not generic values. Actual soil thermal resistivity, depth, grouping, spacing, duct thermal resistance, ambient and solar exposure must be solved.<\/div><div class=\"box\"><b>Conductor resistance<\/b><br>Maximum DC resistance is specified at 20 \u00b0C. For voltage drop and losses, correct for conductor temperature and use the applicable AC resistance, reactance, power factor, route length and phase arrangement.<\/div><div class=\"box\"><b>Single-core magnetic arrangement<\/b><br>Flat formation affects reactance, induced currents, screen losses and cleat forces. Phase spacing and screen bonding cannot be left to a generic multicore-cable assumption.<\/div><div class=\"box\"><b>Fault duty<\/b><br>The matrix supplies conductor short-circuit current for 1 s. Verify protection clearing time, conductor 250 \u00b0C limit, screen fault duty, bonding method, joint capability and termination capability as one I\u00b2t chain.<\/div><\/div>\n<div class=\"formula\">Three-phase voltage-drop screening relation:\n\u0394U \u2248 \u221a3 \u00d7 I \u00d7 (R_ac \u00d7 cos \u03c6 + X \u00d7 sin \u03c6) \u00d7 L\n\nThermal acceptance requires:\nI_load \u2264 I_z(actual formation, ambient, soil, grouping, screen losses, accessory limits)\n\nShort-circuit coordination requires:\nI\u00b2t_protection \u2264 I\u00b2t_cable \/ accessory \/ screen system\n\nThe source supplies DCR at 20 \u00b0C, reactance at 50 Hz, voltage-drop field, current ratings and conductor 1 s short-circuit current; no source weight field is supplied in this matrix. The equations are engineering screening relations; final calculations must use the controlled installation basis and the applicable calculation method.<\/div>\n<div class=\"scroll\"><table><thead><tr><th>Engineering check<\/th><th>Source field to use<\/th><th>Why it matters<\/th><th>Release decision<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Normal loading<\/td><td>Air \/ buried permissible current<\/td><td>Formation, ambient, soil and grouping change heat dissipation.<\/td><td class=\"source\">Recalculate for the actual route.<\/td><\/tr><tr><td class=\"key\">Voltage drop<\/td><td>DCR, reactance and voltage-drop fields<\/td><td>Motor starting, load change, power factor and route length can govern the area.<\/td><td class=\"source\">Use project load profile.<\/td><\/tr><tr><td class=\"key\">Conductor fault duty<\/td><td>Short-circuit conductor 1 s [kA] and 250 \u00b0C limit<\/td><td>Clearing time and initial conductor temperature affect I\u00b2t.<\/td><td class=\"source\">Verify with protection study.<\/td><\/tr><tr><td class=\"key\">Screen fault duty<\/td><td>Screen construction; no screen-current value supplied in the matrix<\/td><td>Screen continuity and bonding must carry the intended earth-fault current.<\/td><td class=\"warn\">Must be confirmed before release.<\/td><\/tr><\/tbody><\/table><\/div>\n\n<h2>9. Fire performance, smoke and LSZH<\/h2>\n<p>The supplied family title states <b>Cca<\/b>. The same reference separately lists <b>IEC 60332-3 Cat. C<\/b>, <b>IEC 60754-1; IEC 60754-2<\/b> and <b>IEC 61034-2<\/b>. These should be read as separate evidence layers: a fire-performance class, a flame-spread test reference, halogen-acid-gas \/ corrosivity references and a smoke-density reference.<\/p>\n<div class=\"grid\"><div class=\"box\"><b>Cca<\/b><br>Use the exact product-specific reaction-to-fire declaration in the project fire schedule. The supplied material does not state the smoke, droplet or acidity qualifiers, so they must not be invented.<\/div><div class=\"box\"><b>IEC 60332-3 Cat. C<\/b><br>The official IEC publication describes a bunched-cable vertical flame-spread test. Category C uses a defined non-metallic-material volume and flame-application time; it is not itself a CPR Cca declaration.<\/div><div class=\"box\"><b>IEC 60754-1 \/ -2<\/b><br>These references support evaluation of halogen-acid-gas and corrosivity-related behaviour. Exact values must match the sheath and insulation compound in the ordered construction.<\/div><div class=\"box\"><b>IEC 61034-2<\/b><br>Smoke density is a test result, not a guarantee of visibility in every installed arrangement. Cable grouping, ventilation, enclosure and fire compartmentation remain decisive.<\/div><div class=\"box\"><b>LSZH outer sheath<\/b><br>Low-smoke, halogen-free construction supports human-safety and equipment-protection objectives, but LSZH alone does not automatically establish Cca or any particular sub-class.<\/div><div class=\"box\"><b>Project fire strategy<\/b><br>Confirm cable classification, DoP, route grouping, fire stopping, penetration seals, support system, emergency egress and local building requirements together.<\/div><\/div>\n<div class=\"warn\"><b>Procurement rule:<\/b> ask for the current product-specific declaration and fire-test report for the exact Feichun N2XS(F)H size and construction. Do not copy a fire sub-class from another cable or another supplier.<\/div>\n\n<h2>10. Fixed-route application architecture<\/h2>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 1000\" role=\"img\" aria-label=\"N2XS(F)H fixed medium-voltage applications from port substation and industrial feeder through ducts and underground routes\">\n<defs><linearGradient id=\"app-sky-xsfh\" x1=\"0\" x2=\"0\" y1=\"0\" y2=\"1\"><stop stop-color=\"#0b3347\"\/><stop offset=\"1\" stop-color=\"#06131b\"\/><\/linearGradient><linearGradient id=\"app-ground-xsfh\" x1=\"0\" x2=\"0\" y1=\"0\" y2=\"1\"><stop stop-color=\"#304e55\"\/><stop offset=\"1\" stop-color=\"#0a1b24\"\/><\/linearGradient><marker id=\"app-arrow-xsfh\" 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=\"1000\" fill=\"url(#app-sky-xsfh)\"\/><rect y=\"650\" width=\"1900\" height=\"350\" fill=\"url(#app-ground-xsfh)\"\/><path d=\"M0 650 H1900\" stroke=\"#7f9ea4\" stroke-width=\"4\"\/>\n<text x=\"60\" y=\"66\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">N2XS(F)H fixed-route architecture \u2014 water-aware MV distribution<\/text><text x=\"60\" y=\"106\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">Shore-side substations, industrial plants, residential \/ industrial areas, underground routes and ducts; not a dynamic crane cable.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <rect x=\"70\" y=\"220\" width=\"280\" height=\"260\" rx=\"15\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/><path d=\"M125 395 V295 H295 V395\" fill=\"none\" stroke=\"#a7bcc2\" stroke-width=\"13\"\/><path d=\"M145 395 H275\" stroke=\"#a7bcc2\" stroke-width=\"13\"\/><circle cx=\"210\" cy=\"285\" r=\"35\" fill=\"#e8c37b\"\/><text x=\"105\" y=\"435\" font-size=\"24\" font-weight=\"700\" fill=\"#55dff7\">Port \/ grid substation<\/text><text x=\"119\" y=\"467\" font-size=\"17\">12\/20 kV feeder<\/text>\n <rect x=\"480\" y=\"220\" width=\"280\" height=\"260\" rx=\"15\" fill=\"#0b202b\" stroke=\"#62df9c\" stroke-width=\"4\"\/><rect x=\"535\" y=\"285\" width=\"170\" height=\"115\" fill=\"#263941\" stroke=\"#a6c2c7\" stroke-width=\"6\"\/><circle cx=\"570\" cy=\"320\" r=\"10\" fill=\"#62df9c\"\/><circle cx=\"610\" cy=\"320\" r=\"10\" fill=\"#ff777f\"\/><circle cx=\"650\" cy=\"320\" r=\"10\" fill=\"#55dff7\"\/><path d=\"M560 370 H680\" stroke=\"#e8c37b\" stroke-width=\"8\"\/><text x=\"545\" y=\"435\" font-size=\"24\" font-weight=\"700\" fill=\"#62df9c\">MV switchgear<\/text><text x=\"530\" y=\"467\" font-size=\"17\">screen bonding \/ termination<\/text>\n <rect x=\"890\" y=\"220\" width=\"280\" height=\"260\" rx=\"15\" fill=\"#0b202b\" stroke=\"#e8c37b\" stroke-width=\"4\"\/><path d=\"M945 405 V330 H1115 V405\" fill=\"none\" stroke=\"#e8c37b\" stroke-width=\"10\"\/><path d=\"M960 350 H1100\" stroke=\"#55dff7\" stroke-width=\"8\"\/><path d=\"M960 380 H1100\" stroke=\"#62df9c\" stroke-width=\"8\"\/><text x=\"925\" y=\"435\" font-size=\"24\" font-weight=\"700\" fill=\"#e8c37b\">Duct \/ trench<\/text><text x=\"925\" y=\"467\" font-size=\"17\">water level + thermal soil<\/text>\n <rect x=\"1300\" y=\"220\" width=\"280\" height=\"260\" rx=\"15\" fill=\"#0b202b\" stroke=\"#aa9bff\" stroke-width=\"4\"\/><path d=\"M1340 400 V300 H1535 V400\" fill=\"none\" stroke=\"#a6c2c7\" stroke-width=\"11\"\/><path d=\"M1380 400 V345 M1440 400 V345 M1500 400 V345\" stroke=\"#55dff7\" stroke-width=\"8\"\/><text x=\"1340\" y=\"435\" font-size=\"24\" font-weight=\"700\" fill=\"#aa9bff\">Industrial load<\/text><text x=\"1340\" y=\"467\" font-size=\"17\">motor \/ transformer \/ process<\/text>\n <path d=\"M350 350 H470 M760 350 H880 M1170 350 H1290\" stroke=\"#dcebf0\" stroke-width=\"5\" marker-end=\"url(#app-arrow-xsfh)\"\/>\n <path d=\"M210 480 V755 H1440 V480\" fill=\"none\" stroke=\"#b23c48\" stroke-width=\"28\"\/><path d=\"M210 480 V755 H1440 V480\" fill=\"none\" stroke=\"#ffadb3\" stroke-width=\"4\"\/>\n <text x=\"210\" y=\"835\" fill=\"#ffaaa5\" font-size=\"24\" font-weight=\"700\">N2XS(F)H route: fixed, supported, sealed and water-aware<\/text><text x=\"210\" y=\"872\" fill=\"#dcebf0\" font-size=\"18\">The source application covers underground and duct routes; calculate the actual formation, drainage and thermal environment.<\/text>\n <rect x=\"80\" y=\"900\" width=\"1740\" height=\"68\" rx=\"10\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"110\" y=\"943\" font-size=\"18\" fill=\"#ffaaa5\">Port-engineering boundary: the shore-side feeder may be fixed MV infrastructure; a moving STS \/ RTG travel route requires a dedicated dynamic cable design.<\/text>\n<\/g><\/svg><\/div>\n<div class=\"grid\"><div class=\"box\"><b>Substation and switchgear<\/b><br>Use matched MV terminations and screen-bonding hardware. Confirm phase formation, clearances, induced current, touch-voltage design and accessory heat.<\/div><div class=\"box\"><b>Underground and duct routes<\/b><br>Use the water-blocking feature as part of a complete route design: drainage, duct fill, pulling method, sidewall pressure, end seals, joints, water level and thermal soil parameters.<\/div><div class=\"box\"><b>Industrial plant and port shore-side feeders<\/b><br>UV resistance, rodent protection and LSZH construction can be useful in demanding fixed routes. Chemical exposure, impact, vibration, fire compartmentation and maintenance access still require review.<\/div><div class=\"box\"><b>Moving crane equipment<\/b><br>Do not place this fixed-installation reference into a reeling, festoon or drag-chain route without a separate dynamic design. Travel speed, acceleration, torsion, cycles, rollers and winding geometry govern that selection.<\/div><\/div>\n\n<h2>11. Handling, bending and termination<\/h2>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 1080\" role=\"img\" aria-label=\"N2XS(F)H installation diagram showing drum pay-off, unprovided laying-radius factor, water sealing, cleat support and MV termination\">\n<defs><marker id=\"inst-arrow-xsfh\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0 L12 4 L0 8 Z\" fill=\"#dcebf0\"\/><\/marker><linearGradient id=\"inst-floor-xsfh\" 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=\"1080\" fill=\"#06131b\"\/><rect y=\"680\" width=\"1900\" height=\"400\" fill=\"url(#inst-floor-xsfh)\"\/><path d=\"M0 680 H1900\" stroke=\"#6a888f\" stroke-width=\"4\"\/>\n<text x=\"60\" y=\"65\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">N2XS(F)H installation controls \u2014 drum, radius, water seals and screen bonding<\/text><text x=\"60\" y=\"105\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">The supplied Cca reference does not state a laying factor. The exact factor and accessory method statement must be confirmed for each ordered size.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <rect x=\"70\" y=\"260\" width=\"240\" height=\"235\" rx=\"15\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/><circle cx=\"190\" cy=\"355\" r=\"70\" fill=\"#4b151f\" stroke=\"#b65963\" stroke-width=\"12\"\/><circle cx=\"190\" cy=\"355\" r=\"30\" fill=\"#263941\" stroke=\"#e8c37b\" stroke-width=\"8\"\/><path d=\"M190 285 V425 M120 355 H260\" stroke=\"#a9c1c5\" stroke-width=\"7\"\/><text x=\"120\" y=\"468\" font-size=\"23\" font-weight=\"700\">Drum pay-off<\/text><text x=\"105\" y=\"498\" font-size=\"16\">axis aligned \u00b7 ends sealed<\/text>\n <path d=\"M310 355 C430 355 450 555 590 555\" fill=\"none\" stroke=\"#18080c\" stroke-width=\"56\"\/><path d=\"M310 355 C430 355 450 555 590 555\" fill=\"none\" stroke=\"#a3444e\" stroke-width=\"38\"\/><path d=\"M310 355 C430 355 450 555 590 555\" fill=\"none\" stroke=\"#ffb0b4\" stroke-width=\"4\"\/>\n <path d=\"M345 195 H640\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#inst-arrow-xsfh)\"\/><text x=\"78\" y=\"170\" font-size=\"22\" font-weight=\"700\" fill=\"#e8c37b\">Controlled pulling direction<\/text><text x=\"78\" y=\"204\" font-size=\"17\">Use a released pulling method; do not pull on the sheath alone.<\/text>\n <rect x=\"590\" y=\"505\" width=\"380\" height=\"95\" rx=\"12\" fill=\"#263941\" stroke=\"#9eb7bd\" stroke-width=\"5\"\/><path d=\"M670 552 H890\" stroke=\"#e8c37b\" stroke-width=\"12\"\/><text x=\"630\" y=\"690\" font-size=\"23\" font-weight=\"700\">Cleat \/ support<\/text><text x=\"630\" y=\"722\" font-size=\"17\">avoid point loading and crushing<\/text>\n <path d=\"M970 555 H1100\" stroke=\"#a3444e\" stroke-width=\"38\"\/><path d=\"M970 555 H1100\" stroke=\"#dcebf0\" stroke-width=\"3\" marker-end=\"url(#inst-arrow-xsfh)\"\/><rect x=\"1100\" y=\"395\" width=\"330\" height=\"305\" rx=\"15\" fill=\"#0b202b\" stroke=\"#62df9c\" stroke-width=\"4\"\/><rect x=\"1170\" y=\"480\" width=\"190\" height=\"115\" fill=\"#263941\" stroke=\"#a6c2c7\" stroke-width=\"6\"\/><path d=\"M1190 520 H1340 M1190 550 H1340\" stroke=\"#55dff7\" stroke-width=\"7\"\/><path d=\"M1270 595 V660\" stroke=\"#62df9c\" stroke-width=\"8\"\/><text x=\"1145\" y=\"655\" font-size=\"23\" font-weight=\"700\">MV termination<\/text><text x=\"1145\" y=\"687\" font-size=\"17\">screen bond + phase record<\/text>\n <path d=\"M450 560 A185 185 0 0 1 635 745\" fill=\"none\" stroke=\"#ff777f\" stroke-width=\"5\" stroke-dasharray=\"14 10\"\/><text x=\"335\" y=\"825\" font-size=\"24\" font-weight=\"700\" fill=\"#ffaaa5\">Laying factor not stated in source<\/text><text x=\"335\" y=\"858\" font-size=\"18\">No radius is derived because the Cca reference does not state a laying factor.<\/text>\n <path d=\"M1430 555 H1780\" stroke=\"#62df9c\" stroke-width=\"4\"\/><text x=\"1470\" y=\"470\" font-size=\"23\" font-weight=\"700\" fill=\"#62df9c\">Acceptance checks<\/text><text x=\"1470\" y=\"510\" font-size=\"17\">drum label and end seals<\/text><text x=\"1470\" y=\"540\" font-size=\"17\">sheath \/ water-blocking inspection<\/text><text x=\"1470\" y=\"570\" font-size=\"17\">conductor resistance<\/text><text x=\"1470\" y=\"600\" font-size=\"17\">screen continuity \/ bonding<\/text><text x=\"1470\" y=\"630\" font-size=\"17\">MV accessory tests<\/text><text x=\"1470\" y=\"660\" font-size=\"17\">as-built route records<\/text>\n <rect x=\"80\" y=\"950\" width=\"1740\" height=\"72\" rx=\"10\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"110\" y=\"994\" font-size=\"18\" fill=\"#ffaaa5\">Water blocking is not permission to leave cable ends open: end seals, joint interfaces, drainage and sheath integrity determine the installed system.<\/text>\n<\/g><\/svg><\/div>\n<ol><li>Confirm drum label, Nexans reference or Feichun product code, cable length, end seals, outside diameter and delivered mass before unloading.<\/li><li>Obtain and use the released bending factor. The supplied Cca reference does not state a laying factor; no bending radius is derived below. Obtain the released factor and accessory instructions for the ordered size.<\/li><li>Align the drum, pay off in the marked direction and prevent reverse winding, flange impact, uncontrolled twist and local sheath abrasion.<\/li><li>Use a controlled pulling method. Verify pulling load, sidewall pressure, roller spacing, entry geometry and minimum radius from the current method statement.<\/li><li>Keep cable ends sealed during storage and installation. Water blocking cannot compensate for open ends, damaged sheath or contaminated joint interfaces.<\/li><li>Prepare semiconducting screens and XLPE interfaces with controlled tools and dimensions. Termination workmanship is part of dielectric reliability.<\/li><li>Bond the metallic screen according to the earthing design. Verify continuity, bonding arrangement, induced-current assumptions and termination torque.<\/li><li>Before energisation, complete conductor resistance, screen continuity, insulation \/ sheath tests, MV withstand or partial-discharge tests where specified, phase identification, accessory inspection, fire documentation and as-built records.<\/li><\/ol>\n<div class=\"scroll\"><table><thead><tr><th>Cross section<\/th><th>Nominal outer diameter<\/th><th>Derived circumference \u03c0D<\/th><th>Derived perimeter<\/th><th>Interpretation<\/th><\/tr><\/thead><tbody><tr><td>120 mm\u00b2<\/td><td>32.6 mm<\/td><td>\u03c0 \u00d7 32.6 mm<\/td><td class=\"derived\">102.4 mm<\/td><td>Geometry only; not a bending-radius value<\/td><\/tr><tr><td>185 mm\u00b2<\/td><td>34.3 mm<\/td><td>\u03c0 \u00d7 34.3 mm<\/td><td class=\"derived\">107.8 mm<\/td><td>Geometry only; not a bending-radius value<\/td><\/tr><tr><td>300 mm\u00b2<\/td><td>39.7 mm<\/td><td>\u03c0 \u00d7 39.7 mm<\/td><td class=\"derived\">124.7 mm<\/td><td>Geometry only; not a bending-radius value<\/td><\/tr><tr><td>400 mm\u00b2<\/td><td>42.3 mm<\/td><td>\u03c0 \u00d7 42.3 mm<\/td><td class=\"derived\">132.9 mm<\/td><td>Geometry only; not a bending-radius value<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"warn\"><b>Movement boundary:<\/b> A laying factor is not stated in this Cca reference. It does not establish continuous-flex, torsion, festoon, reel or drag-chain performance. Select a dedicated dynamic cable when the route moves repeatedly.<\/div>\n\n<h2>12. Selection comparison for engineers<\/h2>\n<div class=\"scroll\"><table><thead><tr><th>Requirement<\/th><th>N2XS(F)H reference<\/th><th>Comparison \/ risk<\/th><th>Engineering decision<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Wet underground or duct route<\/td><td>Radial and longitudinal water blocking stated; longitudinally watertight: Yes.<\/td><td>Stronger water-management basis than a construction where water blocking is not stated; drainage and end sealing are still required.<\/td><td class=\"source\">Strong candidate subject to current test evidence.<\/td><\/tr><tr><td class=\"key\">12\/20 kV fixed distribution<\/td><td>Cu \/ XLPE \/ copper screen \/ LSZH, IEC 60502-2 listed.<\/td><td>Voltage class and accessory system must be matched; screen bonding and fault duty are not optional.<\/td><td class=\"source\">Suitable subject to calculation and accessory approval.<\/td><\/tr><tr><td class=\"key\">Fire-sensitive industrial route<\/td><td>Cca title; IEC 60332-3 Cat. C; IEC 60754-1\/-2; IEC 61034-2; LSZH.<\/td><td>Fire class, test references and route fire strategy must not be collapsed into one marketing label.<\/td><td class=\"source\">Use current declaration for exact size.<\/td><\/tr><tr><td class=\"key\">High-current feeder<\/td><td>120\u2013400 mm\u00b2 matrix with air and buried flat ratings.<\/td><td>Ratings change with ambient, soil, depth, grouping, spacing, screen losses and duct thermal resistance.<\/td><td class=\"source\">Select after thermal study.<\/td><\/tr><tr><td class=\"key\">Port shore-side fixed feeder<\/td><td>Potentially relevant to fixed substation, duct and industrial routes.<\/td><td>Salt atmosphere, flooding, UV, rodents, impact, fire compartments and maintenance access require a project review.<\/td><td class=\"source\">Confirm environmental construction.<\/td><\/tr><tr><td class=\"key\">Shipboard, submarine or moving crane route<\/td><td>Not established by this fixed-installation reference.<\/td><td>Special standards, dynamic cycles, torsion, reeling geometry and accessory design are different.<\/td><td class=\"warn\">Select a dedicated cable family.<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 920\" role=\"img\" aria-label=\"N2XS(F)H engineering selection flow for voltage, water, fire, ampacity, accessories and final release\">\n<defs><marker id=\"sel-arrow-xsfh\" 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=\"920\" fill=\"#06131b\"\/><text x=\"60\" y=\"65\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">N2XS(F)H selection gate \u2014 water risk before cable size<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6fa\">\n <rect x=\"60\" y=\"235\" width=\"260\" height=\"180\" rx=\"14\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"110\" y=\"295\" font-size=\"24\" font-weight=\"700\">1. System basis<\/text><text x=\"110\" y=\"332\" font-size=\"18\">12\/20 kV \u00b7 Um 24 kV<\/text><text x=\"110\" y=\"365\" font-size=\"18\">load \/ fault \/ route length<\/text><path d=\"M320 325 H425\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#sel-arrow-xsfh)\"\/>\n <rect x=\"425\" y=\"185\" width=\"300\" height=\"280\" rx=\"14\" fill=\"#0b202b\" stroke=\"#e8c37b\" stroke-width=\"4\"\/><text x=\"480\" y=\"250\" font-size=\"24\" font-weight=\"700\" fill=\"#e8c37b\">2. Water risk<\/text><text x=\"480\" y=\"292\" font-size=\"18\">groundwater \/ duct water<\/text><text x=\"480\" y=\"327\" font-size=\"18\">radial ingress paths<\/text><text x=\"480\" y=\"362\" font-size=\"18\">route length \/ joints<\/text><text x=\"480\" y=\"397\" font-size=\"18\">N2XS(F)H water blocking<\/text><path d=\"M725 325 H830\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#sel-arrow-xsfh)\"\/>\n <rect x=\"830\" y=\"185\" width=\"300\" height=\"280\" rx=\"14\" fill=\"#0b202b\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"885\" y=\"250\" font-size=\"24\" font-weight=\"700\" fill=\"#55dff7\">3. Cable build<\/text><text x=\"885\" y=\"292\" font-size=\"18\">Cu \/ XLPE \/ Cu screen<\/text><text x=\"885\" y=\"327\" font-size=\"18\">class 2 conductor<\/text><text x=\"885\" y=\"362\" font-size=\"18\">LSZH sheath<\/text><text x=\"885\" y=\"397\" font-size=\"18\">120\u2013400 mm\u00b2 matrix<\/text><path d=\"M1130 325 H1235\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#sel-arrow-xsfh)\"\/>\n <rect x=\"1235\" y=\"185\" width=\"300\" height=\"280\" rx=\"14\" fill=\"#0b202b\" stroke=\"#ff777f\" stroke-width=\"4\"\/><text x=\"1290\" y=\"250\" font-size=\"24\" font-weight=\"700\" fill=\"#ffaaa5\">4. Fire \/ thermal<\/text><text x=\"1290\" y=\"292\" font-size=\"18\">Cca \u00b7 LSZH<\/text><text x=\"1290\" y=\"327\" font-size=\"18\">IEC 60332-3 Cat. C<\/text><text x=\"1290\" y=\"362\" font-size=\"18\">90 \u00b0C \/ 250 \u00b0C<\/text><text x=\"1290\" y=\"397\" font-size=\"18\">air \/ buried flat ratings<\/text><path d=\"M1535 325 H1640\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#sel-arrow-xsfh)\"\/>\n <rect x=\"1640\" y=\"185\" width=\"200\" height=\"280\" rx=\"14\" fill=\"#0b202b\" stroke=\"#62df9c\" stroke-width=\"4\"\/><text x=\"1680\" y=\"250\" font-size=\"22\" font-weight=\"700\" fill=\"#62df9c\">5. Release<\/text><text x=\"1680\" y=\"292\" font-size=\"17\">size<\/text><text x=\"1680\" y=\"325\" font-size=\"17\">accessories<\/text><text x=\"1680\" y=\"358\" font-size=\"17\">tests<\/text><text x=\"1680\" y=\"391\" font-size=\"17\">records<\/text>\n <path d=\"M1015 465 V610\" stroke=\"#dcebf0\" stroke-width=\"4\" marker-end=\"url(#sel-arrow-xsfh)\"\/><rect x=\"690\" y=\"610\" width=\"650\" height=\"180\" rx=\"14\" fill=\"#081b24\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"760\" y=\"670\" font-size=\"25\" font-weight=\"700\" fill=\"#55dff7\">6. Verify before energisation<\/text><text x=\"760\" y=\"712\" font-size=\"18\">voltage drop \u00b7 ampacity \u00b7 conductor I\u00b2t \u00b7 screen duty<\/text><text x=\"760\" y=\"745\" font-size=\"18\">sheath \/ insulation tests \u00b7 PD \/ HV where specified<\/text>\n <path d=\"M690 700 H410\" stroke=\"#ff777f\" stroke-width=\"4\" marker-end=\"url(#sel-arrow-xsfh)\"\/><rect x=\"70\" y=\"610\" width=\"340\" height=\"180\" rx=\"14\" fill=\"#081b24\" stroke=\"#ff777f\" stroke-width=\"4\"\/><text x=\"115\" y=\"670\" font-size=\"24\" font-weight=\"700\" fill=\"#ffaaa5\">If the route moves<\/text><text x=\"115\" y=\"710\" font-size=\"18\">reel \/ festoon \/ drag chain<\/text><text x=\"115\" y=\"745\" font-size=\"18\">select dedicated dynamic cable<\/text>\n <text x=\"1400\" y=\"625\" font-size=\"18\" fill=\"#ffaaa5\">Never fill a blank field<\/text><text x=\"1400\" y=\"658\" font-size=\"18\" fill=\"#ffaaa5\">from another size or supplier.<\/text>\n<\/g><\/svg><\/div>\n\n<h2>13. Failure mode and effects analysis<\/h2>\n<div class=\"grid\"><div class=\"warn\"><b>Radial sheath damage:<\/b> water reaches the screen region; verify sheath inspection, repair criteria, route exposure and test evidence.<\/div><div class=\"warn\"><b>Longitudinal propagation:<\/b> a local entry becomes a long-route contamination path; keep ends sealed and verify joints and water-blocking continuity.<\/div><div class=\"warn\"><b>Wrong ampacity:<\/b> an air or buried flat value is copied into another formation, ambient or soil condition.<\/div><div class=\"warn\"><b>Screen overload:<\/b> conductor short-circuit data is available but screen fault duty is not stated in the supplied matrix; close the screen I\u00b2t before release.<\/div><div class=\"warn\"><b>Radius violation:<\/b> a trench corner, roller or gland bends the cable below the controlled factor for the ordered outside diameter.<\/div><div class=\"warn\"><b>Termination damage:<\/b> semiconducting screen or XLPE interfaces are prepared outside the kit dimensions, increasing partial-discharge risk.<\/div><div class=\"warn\"><b>Fire-class substitution:<\/b> Cca is expanded to unprovided sub-classes, or LSZH is treated as proof of a complete CPR declaration.<\/div><div class=\"warn\"><b>Dynamic misuse:<\/b> a fixed N2XS(F)H cable is installed in a reel, festoon, drag chain or crane travel system because its sheath appears robust.<\/div><\/div>\n\n<h2>14. Feichun Cable 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>For a Feichun N2XS(F)H release<\/b><br>Confirm product code, 12\/20 (24) kV rating, conductor area, outside diameter, mass, DCR, reactance, voltage drop, formation ratings, conductor and screen fault duty, water-blocking construction, fire class, LSZH compounds and accessory compatibility.<\/div><div class=\"box\"><b>Certification is configuration-specific<\/b><br>Certification capability does not make every N2XS(F)H size automatically Cca, IEC 60502-2 compliant, IECEx, ATEX, EAC or fire-certified. The exact cable, test report, declaration and market documentation must match.<\/div><div class=\"box\"><b>Water-blocking dossier<\/b><br>The controlled release should identify radial and longitudinal water-blocking materials, screen construction, end treatment, joint compatibility, test method, acceptance criteria and revision status.<\/div><div class=\"box\"><b>Feichun engineering value<\/b><br>Feichun can develop the N2XS(F)H architecture as a water-aware, fire-performance MV platform while adapting conductor, screen, sheath, dimensions and project testing to the actual route instead of copying a reference label.<\/div><\/div>\n<div class=\"warn\"><b>Release condition:<\/b> this article does not invent a Feichun certificate number, notified body, screen fault current, drum dimension, water-blocking test result or product-specific DoP. Values not stated for the Feichun configuration must be confirmed in the current controlled technical file.<\/div>\n\n<h2>15. Source map and data-status 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\/N2XS%28F%29H-138044.html\" target=\"_blank\" rel=\"nofollow noopener\">Nexans T\u00fcrkiye N2XS(F)H 12\/20 kV – Cca family page<\/a><\/td><td>Product title, radial and longitudinal water-blocking description, IEC 60502-2 listing, application, construction, characteristics and family references.<\/td><td>Manufacturer family reference; confirm current availability, revision and Feichun configuration separately.<\/td><\/tr><tr><td><a href=\"https:\/\/www.nexans.com.tr\/.rest\/catalog\/v1\/family\/pdf\/38044\/N2XS-F-H-12-20-kV-Cca\" target=\"_blank\" rel=\"nofollow noopener\">Nexans T\u00fcrkiye N2XS(F)H 12\/20 kV Cca technical PDF<\/a><\/td><td>Cross-check of the two-page family PDF, construction, characteristic fields and product list.<\/td><td>A family PDF; do not silently generalise revision-specific fields without confirming the ordered item.<\/td><\/tr><tr><td><a href=\"https:\/\/www.nexans.com.tr\/.rest\/catalog\/v1\/family\/cpr\/38044\" target=\"_blank\" rel=\"nofollow noopener\">Nexans T\u00fcrkiye CPR Declaration of Performance<\/a><\/td><td>Official family DoP record for Cca-s1,d2,a1 according to EN 50575:2014+A1:2016 and the listed product references.<\/td><td>Use only for the exact ordered product and current declaration; it does not create a Feichun certificate.<\/td><\/tr><tr><td><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66144\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60754-1<\/a>; <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/3403\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60754-2<\/a>; <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66136\" target=\"_blank\" rel=\"nofollow noopener\">IEC 61034-2<\/a><\/td><td>Official standard records for halogen-acid-gas content, gas acidity \/ conductivity and smoke-density test context.<\/td><td>Test references only; the product-specific compound, test report and project fire requirements control.<\/td><\/tr><tr><td><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/95394\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60502-2 official consolidated publication record<\/a><\/td><td>Standard-scope review for extruded-insulation cables from 6 kV up to 30 kV, fixed installations and water-ingress considerations.<\/td><td>Project adoption and current controlled edition must be checked before a conformity claim.<\/td><\/tr><tr><td><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/32826\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60332-3-24:2018 official publication record<\/a><\/td><td>Category C bunched-cable vertical flame-spread test context.<\/td><td>Test method reference; it is not itself a CPR Cca declaration.<\/td><\/tr><tr><td>User-supplied reference record<\/td><td>Complete 120\u2013400 mm\u00b2 matrix, source metadata, fire references, operating temperatures, water-tightness claim and construction text reproduced in this article.<\/td><td>Preserved as supplied; drawings, dimensions, weights and ratings remain subject to current document confirmation.<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"warn\">This article is for preliminary engineering, technical search and comparison. The final Feichun N2XS(F)H 12\/20 kV – Cca release must be checked against the current product data sheet, water-blocking test report, fire declaration, cable accessories, installation formation, project fire strategy and local authority requirements.<\/div>\n<\/main>\n<footer><div class=\"wrap\"><h3>Feichun Cable \u2014 N2XS(F)H 12\/20 kV – Cca 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 source values, derived checks and Feichun project-confirmation values. Missing fields are not filled from another supplier or cable size.<\/p><div>FEICHUN-N2XSFH-12-20KV-CCA-ENGINEERING-EN \u00b7 03 August 2026<\/div><\/div><\/footer>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"A full-English engineering guide to the N2XS(F)H single-core XLPE cable family for fixed medium-voltage networks. The supplied reference identifies class 2 copper conductors, a 12\/20 (24) kV rating, radial and longitudinal water blocking, an LSZH outer sheath, Cca fire performance and complete 120\u2013400 mm\u00b2 electrical and thermal data.","protected":false},"author":1,"featured_media":25222,"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":[66,66953,1,56],"tags":[16,111,17],"class_list":["post-25219","post","type-post","status-publish","format-standard","has-post-thumbnail","category-common-problems-encountered-in-cable-applications","category-gost-","category-uncategorized","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\/25219","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=25219"}],"version-history":[{"count":2,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25219\/revisions"}],"predecessor-version":[{"id":25229,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25219\/revisions\/25229"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/25222"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=25219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=25219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=25219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":25219,"date":"2026-08-04T11:21:40","date_gmt":"2026-08-04T03:21:40","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=25219"},"modified":"2026-08-04T11:21:44","modified_gmt":"2026-08-04T03:21:44","slug":"feichun-n2xsfh-12-20-kv-cca-water-blocked-lszh-medium-voltage-cable","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/feichun-n2xsfh-12-20-kv-cca-water-blocked-lszh-medium-voltage-cable\/","title":{"rendered":"Feichun N2XS(F)H 12\/20 kV \u2014 Cca Water-Blocked LSZH Medium-Voltage Cable"},"content":{"rendered":"\n