{"id":77227,"date":"2026-09-20T15:12:43","date_gmt":"2026-09-20T07:12:43","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=77227"},"modified":"2026-09-20T15:12:47","modified_gmt":"2026-09-20T07:12:47","slug":"2yslstcy-j-0-6-1-kv-emv-low-capacitance-double-screened-cable-for-frequency-converters","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/2yslstcy-j-0-6-1-kv-emv-low-capacitance-double-screened-cable-for-frequency-converters\/","title":{"rendered":"2YSL(St)CY-J 0.6\/1 kV EMV: low-capacitance, double-screened cable for frequency converters"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">An engineering guide to the VFD motor cable family: PE insulation for low capacitance, aluminium-laminated foil plus tinned copper braid for full-spectrum screening, in a transparent indoor version, a black UV-resistant version and a symmetrical 3PLUS design with three PE cores.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-dominant-color=\"3d4442\" data-has-transparency=\"false\" style=\"--dominant-color: #3d4442;\" loading=\"lazy\" decoding=\"async\" width=\"849\" height=\"492\" sizes=\"auto, (max-width: 849px) 100vw, 849px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1948.avif\" alt=\"\" class=\"wp-image-77229 not-transparent\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1948.avif 849w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1948-300x174.avif 300w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1948-768x445.avif 768w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1948-399x231.avif 399w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1948-799x463.avif 799w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1948-832x482.avif 832w\" \/><\/figure>\n\n\n\n<!DOCTYPE html><html lang=\"en-AU\"><head><meta charset=\"utf-8\"><meta name=\"viewport\" content=\"width=device-width,initial-scale=1\">\n<meta name=\"description\" content=\"FeiChun engineering guide: 2YSL(St)CY-J 0.6\/1 kV EMV VFD motor cable \u2014 PE insulation, Al foil + Cu braid double screen, transparent, black UV and symmetrical 3PLUS versions, ampacity and capacitance tables.\">\n<meta name=\"keywords\" content=\"2YSLCY-J, 2YSL(St)CY-J, VFD cable, EMC motor cable, frequency converter cable, 3PLUS, symmetrical VFD cable, low capacitance cable, PE insulated cable, FeiChun\">\n<title>2YSL(St)CY-J 0.6\/1 kV EMV VFD motor cable | FeiChun Cable<\/title><style>\n:root{--bg:#041018;--p:#0b202b;--p2:#123443;--ink:#f4f9fb;--muted:#b8ccd3;--line:#315b6f;--c:#55dff7;--g:#62df9c;--s:#e8c37b;--r:#ff777f;--v:#aa9bff}\n*{box-sizing:border-box}html{scroll-behavior:smooth}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 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var(--c)}.value{font-size:30px;color:var(--c);font-weight:bold}.note{border-left:7px solid var(--c);margin:13px 0}.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);margin-top:24px}.toc ol{columns:2;margin-top:8px}.scroll{overflow:auto;margin:18px 0}table{width:100%;border-collapse:collapse;background:#071821;min-width:1180px}caption{text-align:left;color:var(--s);font-weight:bold;padding:8px 0}th,td{border:1px solid var(--line);padding:8px 9px;vertical-align:top}th{background:var(--p2);color:#eaf6fa;position:sticky;top:0}td:first-child{color:var(--c);font-weight:bold}.formula{white-space:pre-line;background:#071821;border:1px solid var(--line);padding:17px;border-radius:8px;font-family:Consolas,monospace}.svg{border:1px solid var(--line);padding:10px;background:#071821;margin:22px 0;border-radius:8px}.svg svg{width:100%;height:auto;display:block}.svg-caption{color:var(--muted);font-size:14px;padding:8px 4px 2px}.contact{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}.contact div{background:#071821;border:1px solid var(--line);padding:15px}.small{font-size:12px;color:#91a9b4}.tag{color:var(--s);font-weight:bold}.ok{color:var(--g);font-weight:bold}.danger{color:var(--r);font-weight:bold}code{color:var(--s)}footer{margin-top:50px;background:#02080c;padding:32px 0}@media(max-width:800px){h1{font-size:31px}.toc ol{columns:1}.contact{grid-template-columns:1fr}.wrap{padding:0 16px}.lead{font-size:18px}}\n@media print{body{background:#fff;color:#000}.hero,footer{background:#fff}}\n<\/style>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"TechArticle\",\"headline\":\"2YSL(St)CY-J 0.6\/1 kV EMV VFD motor cable: engineering guide\",\"inLanguage\":\"en-AU\",\"identifier\":\"FC-ART-VFD-2026-901E\",\"author\":{\"@type\":\"Organization\",\"name\":\"Anhui Feichun Special Cable Co., Ltd.\"},\"dateModified\":\"2026-09-20\"}<\/script><\/head><body>\n<header class=\"hero\"><div class=\"wrap\"><div class=\"tag\">FEICHUN CABLE \u00b7 VFD MOTOR CABLE<\/div>\n<h1>2YSL(St)CY-J 0.6\/1 kV EMV: low-capacitance, double-screened cable for frequency converters<\/h1>\n<p class=\"lead\">An engineering guide to the VFD motor cable family: PE insulation for low capacitance, aluminium-laminated foil plus tinned copper braid for full-spectrum screening, in a transparent indoor version, a black UV-resistant version and a symmetrical 3PLUS design with three PE cores.<\/p>\n<div class=\"badges\"><span>0.6\/1 kV<\/span><span>AC 700\/1 200 V \u00b7 DC 900\/1 800 V<\/span><span>PE insulation<\/span><span>Foil 100 % + Cu braid<\/span><span>IEC 60228 class 5<\/span><span>IEC 60332-1<\/span><span>4 kV test<\/span><span>+160 \u00b0C short-circuit<\/span><span>RoHS \u00b7 CE<\/span><\/div>\n<div class=\"meta\"><span>Document FC-ART-VFD-2026-901E<\/span><span>Updated: 20 September 2026<\/span><span>FeiChun Cable \/ \u98de\u7eaf\u7535\u7f06<\/span><\/div><\/div><\/header>\n<main class=\"wrap\">\n<div class=\"warn\"><strong>Engineer&#8217;s summary:<\/strong> a VFD motor lead is a high-frequency transmission line, not just a power feeder. This cable attacks the two problems that matter \u2014 capacitance (PE insulation) and common-mode current return (foil + braid, 360\u00b0 bonded at both ends). For larger drives, the symmetrical 3PLUS version also balances the PE path.<\/div>\n<nav class=\"toc\"><strong>Contents<\/strong><ol><li><a href=\"#designation\">Reading the designation<\/a><\/li><li><a href=\"#construction\">Construction<\/a><\/li><li><a href=\"#physics\">VFD physics<\/a><\/li><li><a href=\"#data\">Technical data<\/a><\/li><li><a href=\"#tables\">Full data tables<\/a><\/li><li><a href=\"#3plus\">4-core vs. 3PLUS<\/a><\/li><li><a href=\"#install\">Installation and termination<\/a><\/li><li><a href=\"#compare\">Comparison<\/a><\/li><li><a href=\"#design\">Design calculations<\/a><\/li><li><a href=\"#faq\">Certification and FAQ<\/a><\/li><\/ol><\/nav>\n<section id=\"designation\"><h2>1. Reading the designation<\/h2><p><code>2Y<\/code> = PE insulation; <code>SL<\/code> = control\/connecting cable; <code>(St)<\/code> = static screen (Al-laminated foil); <code>C<\/code> = copper braid; <code>Y<\/code> = PVC sheath; <code>K<\/code> = black UV-resistant sheath; <code>-J<\/code> = with GNYE; <code>EMV<\/code> = EMC (Elektromagnetische Vertr\u00e4glichkeit); <code>3PLUS<\/code> = three phases plus three symmetrically arranged PE cores.<\/p>\n<div class=\"cards\"><div class=\"card\"><div class=\"value\">45<\/div><p>Standard constructions across three variants, 1.5\u2013240 mm\u00b2.<\/p><\/div><div class=\"card\"><div class=\"value\">2 screens<\/div><p>Foil 100 % + tinned Cu braid.<\/p><\/div><div class=\"card\"><div class=\"value\">70 nF\/km<\/div><p>Core\/core capacitance at 1.5 mm\u00b2.<\/p><\/div><div class=\"card\"><div class=\"value\">453 A<\/div><p>Current capacity at 240 mm\u00b2, 30 \u00b0C.<\/p><\/div><\/div><\/section>\n<section id=\"construction\"><h2>2. Construction<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 940\" role=\"img\" aria-label=\"VFD cable cross-sections\"><rect width=\"100%\" height=\"100%\" fill=\"#06131b\"><\/rect><defs><radialGradient id=\"cu\" cx=\"40%\" cy=\"35%\" r=\"70%\"><stop offset=\"0\" stop-color=\"#ffd2a1\"\/><stop offset=\".55\" stop-color=\"#c9793d\"\/><stop offset=\"1\" stop-color=\"#7a3f19\"\/><\/radialGradient><pattern id=\"h45\" width=\"12\" height=\"12\" patternUnits=\"userSpaceOnUse\" patternTransform=\"rotate(45)\"><rect width=\"12\" height=\"12\" fill=\"#1a1d20\"\/><line x1=\"0\" y1=\"0\" x2=\"0\" y2=\"12\" stroke=\"#4a5358\" stroke-width=\"3\"\/><\/pattern><pattern id=\"brd\" width=\"16\" height=\"16\" patternUnits=\"userSpaceOnUse\"><rect width=\"16\" height=\"16\" fill=\"#8e98a0\"\/><path d=\"M0 0L16 16M16 0L0 16\" stroke=\"#e7a86d\" stroke-width=\"2.6\"\/><\/pattern><pattern id=\"xh\" width=\"12\" height=\"12\" patternUnits=\"userSpaceOnUse\"><rect width=\"12\" height=\"12\" fill=\"#3a4d55\"\/><path d=\"M0 0L12 12M12 0L0 12\" stroke=\"#6f8c96\" stroke-width=\"1.4\"\/><\/pattern><marker id=\"ar\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"5\" orient=\"auto\"><path d=\"M0 0L12 5L0 10Z\" fill=\"#eaf6fa\"\/><\/marker><marker id=\"al\" markerWidth=\"12\" markerHeight=\"12\" refX=\"2\" refY=\"5\" orient=\"auto\"><path d=\"M12 0L0 5L12 10Z\" fill=\"#eaf6fa\"\/><\/marker><\/defs><text x=\"65\" y=\"70\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"38\" font-weight=\"700\">Cross-sections: 4-core EMV (left) and symmetrical EMV-3PLUS (right)<\/text><text x=\"65\" y=\"106\" fill=\"#b8ccd3\" font-family=\"Arial\" font-size=\"19\">Engineering-drawing style \u00b7 not to scale \u00b7 final dimensions per approved order drawing<\/text><circle cx=\"420\" cy=\"520\" r=\"330\" fill=\"url(#h45)\" stroke=\"#55dff7\" stroke-width=\"5\"\/><circle cx=\"420\" cy=\"520\" r=\"292\" fill=\"url(#brd)\" stroke=\"#d9edf0\" stroke-width=\"2\"\/><circle cx=\"420\" cy=\"520\" r=\"274\" fill=\"none\" stroke=\"#dfe7ea\" stroke-width=\"6\"\/><circle cx=\"420\" cy=\"520\" r=\"270\" fill=\"url(#xh)\"\/><circle cx=\"329\" cy=\"429\" r=\"110\" fill=\"#f2f2f2\" stroke=\"#999\" stroke-width=\"3\"\/><circle cx=\"329\" cy=\"429\" r=\"110\" fill=\"none\" stroke=\"#6b4a2e\" stroke-width=\"10\"\/><circle cx=\"329\" cy=\"429\" r=\"74\" fill=\"url(#cu)\"\/><text x=\"329\" y=\"438\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"24\" font-weight=\"700\" fill=\"#101010\">L1<\/text><circle cx=\"511\" cy=\"429\" r=\"110\" fill=\"#f2f2f2\" stroke=\"#999\" stroke-width=\"3\"\/><circle cx=\"511\" cy=\"429\" r=\"110\" fill=\"none\" stroke=\"#1c1c1c\" stroke-width=\"10\"\/><circle cx=\"511\" cy=\"429\" r=\"74\" fill=\"url(#cu)\"\/><text x=\"511\" y=\"438\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"24\" font-weight=\"700\" fill=\"#101010\">L2<\/text><circle cx=\"511\" cy=\"611\" r=\"110\" fill=\"#f2f2f2\" stroke=\"#999\" stroke-width=\"3\"\/><circle cx=\"511\" cy=\"611\" r=\"110\" fill=\"none\" stroke=\"#9aa4a8\" stroke-width=\"10\"\/><circle cx=\"511\" cy=\"611\" r=\"74\" fill=\"url(#cu)\"\/><text x=\"511\" y=\"620\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"24\" font-weight=\"700\" fill=\"#101010\">L3<\/text><circle cx=\"329\" cy=\"611\" r=\"110\" fill=\"#6bbf3a\" stroke=\"#999\" stroke-width=\"3\"\/><path d=\"M219 611A110 110 0 0 1 439 611\" stroke=\"#f0d000\" stroke-width=\"30\" fill=\"none\"\/><circle cx=\"329\" cy=\"611\" r=\"74\" fill=\"url(#cu)\"\/><text x=\"329\" y=\"620\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"24\" font-weight=\"700\" fill=\"#101010\">PE<\/text><path d=\"M40 520H800M420 140V900\" stroke=\"#ff777f\" stroke-width=\"2\" stroke-dasharray=\"26 8 4 8\"\/><path d=\"M90 892H750\" stroke=\"#eaf6fa\" stroke-width=\"2.5\" marker-start=\"url(#al)\" marker-end=\"url(#ar)\"\/><text x=\"420\" y=\"880\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"22\" fill=\"#eaf6fa\">\u00d8 d<\/text><circle cx=\"1180\" cy=\"520\" r=\"330\" fill=\"url(#h45)\" stroke=\"#55dff7\" stroke-width=\"5\"\/><circle cx=\"1180\" cy=\"520\" r=\"292\" fill=\"url(#brd)\" stroke=\"#d9edf0\" stroke-width=\"2\"\/><circle cx=\"1180\" cy=\"520\" r=\"274\" fill=\"none\" stroke=\"#dfe7ea\" stroke-width=\"6\"\/><circle cx=\"1180\" cy=\"520\" r=\"270\" fill=\"url(#xh)\"\/><circle cx=\"1180\" cy=\"380\" r=\"118\" fill=\"#f2f2f2\" stroke=\"#999\" stroke-width=\"3\"\/><circle cx=\"1180\" cy=\"380\" r=\"82\" fill=\"url(#cu)\"\/><circle cx=\"1180\" cy=\"380\" r=\"118\" fill=\"none\" stroke=\"#6b4a2e\" stroke-width=\"10\"\/><text x=\"1180\" y=\"389\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"26\" font-weight=\"700\" fill=\"#101010\">L1<\/text><circle cx=\"1358\" cy=\"418\" r=\"50\" fill=\"#6bbf3a\"\/><path d=\"M1308 418A50 50 0 0 1 1408 418\" stroke=\"#f0d000\" stroke-width=\"16\" fill=\"none\"\/><circle cx=\"1358\" cy=\"418\" r=\"30\" fill=\"url(#cu)\"\/><text x=\"1358\" y=\"424\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"17\" font-weight=\"700\" fill=\"#101010\">PE<\/text><circle cx=\"1301\" cy=\"590\" r=\"118\" fill=\"#f2f2f2\" stroke=\"#999\" stroke-width=\"3\"\/><circle cx=\"1301\" cy=\"590\" r=\"82\" fill=\"url(#cu)\"\/><circle cx=\"1301\" cy=\"590\" r=\"118\" fill=\"none\" stroke=\"#1c1c1c\" stroke-width=\"10\"\/><text x=\"1301\" y=\"599\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"26\" font-weight=\"700\" fill=\"#101010\">L2<\/text><circle cx=\"1180\" cy=\"725\" r=\"50\" fill=\"#6bbf3a\"\/><path d=\"M1130 725A50 50 0 0 1 1230 725\" stroke=\"#f0d000\" stroke-width=\"16\" fill=\"none\"\/><circle cx=\"1180\" cy=\"725\" r=\"30\" fill=\"url(#cu)\"\/><text x=\"1180\" y=\"732\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"17\" font-weight=\"700\" fill=\"#101010\">PE<\/text><circle cx=\"1059\" cy=\"590\" r=\"118\" fill=\"#f2f2f2\" stroke=\"#999\" stroke-width=\"3\"\/><circle cx=\"1059\" cy=\"590\" r=\"82\" fill=\"url(#cu)\"\/><circle cx=\"1059\" cy=\"590\" r=\"118\" fill=\"none\" stroke=\"#9aa4a8\" stroke-width=\"10\"\/><text x=\"1059\" y=\"599\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"26\" font-weight=\"700\" fill=\"#101010\">L3<\/text><circle cx=\"1002\" cy=\"418\" r=\"50\" fill=\"#6bbf3a\"\/><path d=\"M952 418A50 50 0 0 1 1052 418\" stroke=\"#f0d000\" stroke-width=\"16\" fill=\"none\"\/><circle cx=\"1002\" cy=\"418\" r=\"30\" fill=\"url(#cu)\"\/><text x=\"1002\" y=\"424\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"17\" font-weight=\"700\" fill=\"#101010\">PE<\/text><path d=\"M800 520H1560M1180 140V900\" stroke=\"#ff777f\" stroke-width=\"2\" stroke-dasharray=\"26 8 4 8\"\/><path d=\"M850 892H1510\" stroke=\"#eaf6fa\" stroke-width=\"2.5\" marker-start=\"url(#al)\" marker-end=\"url(#ar)\"\/><text x=\"1180\" y=\"880\" text-anchor=\"middle\" font-family=\"Arial\" font-size=\"22\" fill=\"#eaf6fa\">\u00d8 d<\/text><rect x=\"1560\" y=\"170\" width=\"320\" height=\"560\" fill=\"#071821\" stroke=\"#315b6f\"\/><text x=\"1575\" y=\"215\" font-family=\"Arial\" font-size=\"17\" fill=\"#eaf6fa\">1  <\/text><text x=\"1605\" y=\"215\" font-family=\"Arial\" font-size=\"15\" fill=\"#eaf6fa\">Bare Cu strand, IEC 60228 cl. 5<\/text><text x=\"1605\" y=\"237\" font-family=\"Arial\" font-size=\"15\" fill=\"#b8ccd3\"><\/text><text x=\"1575\" y=\"303\" font-family=\"Arial\" font-size=\"17\" fill=\"#eaf6fa\">2  <\/text><text x=\"1605\" y=\"303\" font-family=\"Arial\" font-size=\"15\" fill=\"#eaf6fa\">PE (polyethylene) insulation \u2014 lo<\/text><text x=\"1605\" y=\"325\" font-family=\"Arial\" font-size=\"15\" fill=\"#b8ccd3\">w capacitance<\/text><text x=\"1575\" y=\"391\" font-family=\"Arial\" font-size=\"17\" fill=\"#eaf6fa\">3  <\/text><text x=\"1605\" y=\"391\" font-family=\"Arial\" font-size=\"15\" fill=\"#eaf6fa\">Coloured cores DIN VDE 0293-308 +<\/text><text x=\"1605\" y=\"413\" font-family=\"Arial\" font-size=\"15\" fill=\"#b8ccd3\"> GNYE<\/text><text x=\"1575\" y=\"479\" font-family=\"Arial\" font-size=\"17\" fill=\"#eaf6fa\">4  <\/text><text x=\"1605\" y=\"479\" font-family=\"Arial\" font-size=\"15\" fill=\"#eaf6fa\">Al\/PET foil, metal side out, 100 <\/text><text x=\"1605\" y=\"501\" font-family=\"Arial\" font-size=\"15\" fill=\"#b8ccd3\">% cover<\/text><text x=\"1575\" y=\"567\" font-family=\"Arial\" font-size=\"17\" fill=\"#eaf6fa\">5  <\/text><text x=\"1605\" y=\"567\" font-family=\"Arial\" font-size=\"15\" fill=\"#eaf6fa\">Tinned Cu braid over the foil<\/text><text x=\"1605\" y=\"589\" font-family=\"Arial\" font-size=\"15\" fill=\"#b8ccd3\"><\/text><text x=\"1575\" y=\"655\" font-family=\"Arial\" font-size=\"17\" fill=\"#eaf6fa\">6  <\/text><text x=\"1605\" y=\"655\" font-family=\"Arial\" font-size=\"15\" fill=\"#eaf6fa\">PVC sheath: transparent, or black<\/text><text x=\"1605\" y=\"677\" font-family=\"Arial\" font-size=\"15\" fill=\"#b8ccd3\"> UV (K)<\/text><rect x=\"1560\" y=\"760\" width=\"320\" height=\"130\" fill=\"#071821\" stroke=\"#315b6f\"\/><g font-family=\"Arial\" font-size=\"15\" fill=\"#b8ccd3\"><text x=\"1575\" y=\"790\">Document<\/text><text x=\"1575\" y=\"818\" fill=\"#eaf6fa\" font-size=\"17\" font-weight=\"700\">FC-ART-VFD-2026-901E<\/text><text x=\"1575\" y=\"850\">Rev. A \u00b7 2026-09 \u00b7 1st angle<\/text><\/g><\/svg><div class=\"svg-caption\">Figure 1: Double-screened VFD cable, 4-core and symmetrical 3 + 3 PE; legend Pos. 1\u20136.<\/div><\/div>\n<div class=\"scroll\"><table style=\"min-width:1180px\"><caption>Materials table (Pos. = legend numbers in Figure 1)<\/caption><thead><tr><th>Pos.<\/th><th>Element<\/th><th>Material \/ form<\/th><th>Engineering function<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>Conductor<\/td><td>Bare Cu, fine-wire, IEC 60228 cl. 5<\/td><td>Flexibility; low skin-effect losses with fine wires<\/td><\/tr><tr><td>2<\/td><td>Core insulation<\/td><td>PE (polyethylene)<\/td><td>Low permittivity \u2192 low capacitance, low dielectric losses<\/td><\/tr><tr><td>3<\/td><td>Core identification<\/td><td>Coloured to DIN VDE 0293-308, with GNYE<\/td><td>Phase identification; 3PLUS: 3 phases + 3 split PE cores<\/td><\/tr><tr><td>4<\/td><td>Inner screen<\/td><td>Aluminium-laminated polyester foil, metal side out, 100 % coverage<\/td><td>Closes braid gaps at high frequency; contacts the braid<\/td><\/tr><tr><td>5<\/td><td>Outer screen<\/td><td>Tinned copper braid<\/td><td>Low-resistance return path; mechanical robustness of the screen<\/td><\/tr><tr><td>6<\/td><td>Outer sheath<\/td><td>PVC; transparent (EMV) or black UV-resistant (K versions)<\/td><td>IEC 60332-1; acids, bases, specified oils; black for outdoor use<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"note\"><strong>Foil metal side out:<\/strong> with the aluminium facing outwards, the foil is in continuous contact with the braid along the whole length. The two screens then act as one low-impedance conductor, and the foil seals the small openings of the braid where high-frequency fields would otherwise leak.<\/div><\/section>\n<section id=\"physics\"><h2>3. VFD physics: why ordinary cables cause trouble<\/h2><p>Each IGBT switching edge charges the cable capacitance. The resulting current pulses flow partly as common-mode current back to the converter. If the cable screen is poor or badly terminated, this current finds other paths \u2014 machine structure, motor bearings, protective earth, neighbouring signal cables \u2014 causing EMI, nuisance tripping of RCDs and electrical bearing erosion.<\/p><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 890\" role=\"img\" aria-label=\"VFD circuit\"><rect width=\"100%\" height=\"100%\" fill=\"#06131b\"><\/rect><defs><marker id=\"m\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"5\" orient=\"auto\"><path d=\"M0 0L12 5L0 10Z\" fill=\"#ff777f\"\/><\/marker><\/defs>\n<text x=\"65\" y=\"70\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"38\" font-weight=\"700\">Why a VFD needs this cable: common-mode current must return through the screen<\/text><g font-family=\"Arial\" fill=\"#eaf6fa\">\n<rect x=\"80\" y=\"160\" width=\"380\" height=\"330\" rx=\"16\" fill=\"#0c2630\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"270\" y=\"215\" text-anchor=\"middle\" font-size=\"28\" font-weight=\"700\" fill=\"#55dff7\">Frequency converter<\/text><text x=\"270\" y=\"260\" text-anchor=\"middle\" font-size=\"19\">IGBT, dv\/dt up to several kV\/\u00b5s<\/text><text x=\"270\" y=\"295\" text-anchor=\"middle\" font-size=\"19\">switching 2\u201316 kHz<\/text>\n<rect x=\"1440\" y=\"160\" width=\"380\" height=\"330\" rx=\"16\" fill=\"#0c2630\" stroke=\"#62df9c\" stroke-width=\"4\"\/><circle cx=\"1630\" cy=\"310\" r=\"100\" fill=\"#123443\" stroke=\"#62df9c\" stroke-width=\"4\"\/><text x=\"1630\" y=\"320\" text-anchor=\"middle\" font-size=\"36\" font-weight=\"700\">M<\/text><text x=\"1630\" y=\"450\" text-anchor=\"middle\" font-size=\"19\">Motor frame \/ bearings<\/text>\n<path d=\"M460 260H1440\" stroke=\"#e7a86d\" stroke-width=\"14\"\/><text x=\"950\" y=\"240\" text-anchor=\"middle\" font-size=\"20\" fill=\"#e7a86d\">Phase conductors L1 L2 L3 (PWM)<\/text>\n<path d=\"M460 330H1440\" stroke=\"#8e98a0\" stroke-width=\"22\" stroke-dasharray=\"8 4\"\/><text x=\"950\" y=\"378\" text-anchor=\"middle\" font-size=\"20\" fill=\"#d9edf0\">Foil + Cu braid, bonded 360\u00b0 at both ends<\/text>\n<path d=\"M1440 400H460\" stroke=\"#ff777f\" stroke-width=\"4\" marker-end=\"url(#m)\"\/><text x=\"950\" y=\"428\" text-anchor=\"middle\" font-size=\"19\" fill=\"#ff777f\">HF common-mode return current (low-impedance path)<\/text>\n<path d=\"M1630 490V600H270V490\" stroke=\"#ff777f\" stroke-width=\"3\" stroke-dasharray=\"10 8\" fill=\"none\"\/><text x=\"950\" y=\"630\" text-anchor=\"middle\" font-size=\"19\" fill=\"#ffaaa5\">Without a good screen: return via structure, bearings, PE and signal cables \u2192 bearing currents, EMI, nuisance trips<\/text>\n<rect x=\"80\" y=\"690\" width=\"1740\" height=\"170\" rx=\"16\" fill=\"#071821\" stroke=\"#315b6f\"\/>\n<text x=\"120\" y=\"740\" font-size=\"21\" font-weight=\"700\" fill=\"#ffcf9c\">Three design levers in 2YSL(St)CY-J:<\/text>\n<text x=\"120\" y=\"780\" font-size=\"19\">1. PE insulation (\u03b5<tspan baseline-shift=\"sub\" font-size=\"13\">r<\/tspan> \u2248 2.3 vs. \u2248 5\u20136 for PVC) \u2192 low capacitance \u2192 lower charging and leakage current, longer permissible motor leads.<\/text>\n<text x=\"120\" y=\"815\" font-size=\"19\">2. Foil + braid \u2192 high screening effectiveness across the whole spectrum; foil closes the braid gaps at high frequency.<\/text>\n<text x=\"120\" y=\"850\" font-size=\"19\">3. Symmetrical 3PLUS layout \u2192 balanced PE currents, minimised residual voltage on the PE path at larger cross-sections.<\/text><\/g><\/svg><div class=\"svg-caption\">Figure 2: VFD\u2013motor circuit and the role of the double screen.<\/div><\/div><\/section>\n<section id=\"data\"><h2>4. Technical data<\/h2><div class=\"scroll\"><table style=\"min-width:1180px\"><caption>Technical data (complete)<\/caption><thead><tr><th>Parameter<\/th><th>Value<\/th><th>Engineering note<\/th><\/tr><\/thead><tbody><tr><td>Variants<\/td><td>2YSL(St)CY-J EMV (transparent); 2YSL(St)CYK-J EMV-UV (black); 2YSL(St)CYK-J EMV-3PLUS-UV (black, 3 + 3 PE)<\/td><td><\/td><\/tr><tr><td>Conductor<\/td><td>Bare copper strand, IEC 60228 class 5<\/td><td><\/td><\/tr><tr><td>Core insulation<\/td><td>PE<\/td><td><\/td><\/tr><tr><td>Core identification<\/td><td>Acc. to DIN VDE 0293-308, coloured cores with GNYE<\/td><td><\/td><\/tr><tr><td>Stranding<\/td><td>Cores stranded in layers<\/td><td><\/td><\/tr><tr><td>Screen<\/td><td>Al-laminated polyester foil, metal side outside, 100 % coverage; over it tinned copper braid<\/td><td>Double screen<\/td><\/tr><tr><td>Outer sheath<\/td><td>PVC<\/td><td><\/td><\/tr><tr><td>Sheath colour<\/td><td>Transparent; K-version: black<\/td><td>Black: UV-resistant, outdoor use<\/td><\/tr><tr><td>Rated voltage U<sub>0<\/sub>\/U<\/td><td>0.6\/1 kV<\/td><td>Highest permissible operating voltage: AC 700\/1 200 V; DC 900\/1 800 V<\/td><\/tr><tr><td>Test voltage<\/td><td>4 kV<\/td><td><\/td><\/tr><tr><td>Conductor resistance<\/td><td>Acc. to IEC 60228 cl. 5<\/td><td><\/td><\/tr><tr><td>Insulation resistance<\/td><td>Min. 20 M\u03a9 \u00d7 km<\/td><td><\/td><\/tr><tr><td>Current carrying capacity<\/td><td>See tables (30 \u00b0C ambient)<\/td><td>Max. permissible values at 30 \u00b0C<\/td><\/tr><tr><td>Capacitance<\/td><td>See tables<\/td><td>Core\/core 70\u2013250 nF\/km; core\/screen 110\u2013410 nF\/km<\/td><\/tr><tr><td>Min. bending radius fixed<\/td><td>\u00d8 \u2264 12 mm: 5 \u00d7 d; \u2264 20 mm: 7.5 \u00d7 d; > 20 mm: 10 \u00d7 d<\/td><td>Calculated per size in the tables<\/td><\/tr><tr><td>Min. bending radius moved<\/td><td>\u00d8 \u2264 12 mm: 10 \u00d7 d; \u2264 20 mm: 15 \u00d7 d; > 20 mm: 20 \u00d7 d<\/td><td><\/td><\/tr><tr><td>Operating temp. fixed<\/td><td>\u221240 \u00b0C \/ +80 \u00b0C<\/td><td><\/td><\/tr><tr><td>Operating temp. moved<\/td><td>\u22125 \u00b0C \/ +70 \u00b0C<\/td><td>Occasional movement only<\/td><\/tr><tr><td>Conductor temperature<\/td><td>+70 \u00b0C operation; +160 \u00b0C short-circuit<\/td><td><\/td><\/tr><tr><td>Burning behaviour<\/td><td>Self-extinguishing and flame-retardant acc. to IEC 60332-1<\/td><td><\/td><\/tr><tr><td>Chemical resistance<\/td><td>Largely resistant to acids, bases and specified oils<\/td><td><\/td><\/tr><tr><td>Compliance<\/td><td>RoHS; 2014\/35\/EU Low Voltage Directive (CE); LABS-\/silicone-free during production<\/td><td><\/td><\/tr><\/tbody><\/table><\/div><\/section>\n<section id=\"tables\"><h2>5. Full data tables<\/h2><p>All 45 constructions are listed, including current capacity at 30 \u00b0C ambient and both capacitance values. Bending radii are calculated with the diameter-dependent factor for each size. The transparent and black 4-core versions share identical electrical and dimensional data.<\/p><div class=\"scroll\"><table style=\"min-width:1600px\"><caption>2YSL(St)CY-J 0.6\/1 kV EMV \u00b7 transparent sheath \u00b7 15 sizes<\/caption><thead><tr><th>Dimension n \u00d7 mm\u00b2<\/th><th>Item no. (ref.)<\/th><th>Outer \u00d8 mm<\/th><th>Cu index kg\/km<\/th><th>Weight kg\/km<\/th><th>Current capacity A (30 \u00b0C)<\/th><th>C core\/core nF\/km<\/th><th>C core\/screen nF\/km<\/th><th>Min. bend fixed mm<\/th><th>Min. bend moved mm<\/th><\/tr><\/thead><tbody><tr><td>4 G 1.5<\/td><td>1000390<\/td><td>10.8<\/td><td>95.0<\/td><td>212.0<\/td><td>18<\/td><td>70<\/td><td>110<\/td><td>5 \u00d7 d = 54<\/td><td>10 \u00d7 d = 108<\/td><\/tr><tr><td>4 G 2.5<\/td><td>1000391<\/td><td>12.3<\/td><td>150.0<\/td><td>270.0<\/td><td>26<\/td><td>80<\/td><td>130<\/td><td>7.5 \u00d7 d = 92<\/td><td>15 \u00d7 d = 184<\/td><\/tr><tr><td>4 G 4<\/td><td>1000392<\/td><td>14.5<\/td><td>235.0<\/td><td>362.0<\/td><td>34<\/td><td>90<\/td><td>150<\/td><td>7.5 \u00d7 d = 109<\/td><td>15 \u00d7 d = 218<\/td><\/tr><tr><td>4 G 6<\/td><td>1000393<\/td><td>16.2<\/td><td>320.0<\/td><td>582.0<\/td><td>44<\/td><td>110<\/td><td>170<\/td><td>7.5 \u00d7 d = 122<\/td><td>15 \u00d7 d = 243<\/td><\/tr><tr><td>4 G 10<\/td><td>1000394<\/td><td>19.5<\/td><td>533.0<\/td><td>794.0<\/td><td>61<\/td><td>120<\/td><td>190<\/td><td>7.5 \u00d7 d = 146<\/td><td>15 \u00d7 d = 292<\/td><\/tr><tr><td>4 G 16<\/td><td>1000648<\/td><td>22.4<\/td><td>789.0<\/td><td>1,188.0<\/td><td>82<\/td><td>130<\/td><td>220<\/td><td>10 \u00d7 d = 224<\/td><td>20 \u00d7 d = 448<\/td><\/tr><tr><td>4 G 25<\/td><td>1000649<\/td><td>27.0<\/td><td>1,236.0<\/td><td>1,713.0<\/td><td>108<\/td><td>145<\/td><td>230<\/td><td>10 \u00d7 d = 270<\/td><td>20 \u00d7 d = 540<\/td><\/tr><tr><td>4 G 35<\/td><td>1000650<\/td><td>30.7<\/td><td>1,662.0<\/td><td>2,402.0<\/td><td>135<\/td><td>150<\/td><td>260<\/td><td>10 \u00d7 d = 307<\/td><td>20 \u00d7 d = 614<\/td><\/tr><tr><td>4 G 50<\/td><td>1000651<\/td><td>35.3<\/td><td>2,345.0<\/td><td>2,718.0<\/td><td>168<\/td><td>175<\/td><td>290<\/td><td>10 \u00d7 d = 353<\/td><td>20 \u00d7 d = 706<\/td><\/tr><tr><td>4 G 70<\/td><td>1000500<\/td><td>40.2<\/td><td>3,196.0<\/td><td>3,636.0<\/td><td>207<\/td><td>180<\/td><td>300<\/td><td>10 \u00d7 d = 402<\/td><td>20 \u00d7 d = 804<\/td><\/tr><tr><td>4 G 95<\/td><td>1000501<\/td><td>45.0<\/td><td>4,316.0<\/td><td>4,700.0<\/td><td>250<\/td><td>195<\/td><td>320<\/td><td>10 \u00d7 d = 450<\/td><td>20 \u00d7 d = 900<\/td><\/tr><tr><td>4 G 120<\/td><td>1000003<\/td><td>52.1<\/td><td>5,435.0<\/td><td>5,699.0<\/td><td>292<\/td><td>215<\/td><td>340<\/td><td>10 \u00d7 d = 521<\/td><td>20 \u00d7 d = 1042<\/td><\/tr><tr><td>4 G 150<\/td><td>1001850<\/td><td>55.2<\/td><td>6,394.0<\/td><td>7,043.0<\/td><td>335<\/td><td>230<\/td><td>360<\/td><td>10 \u00d7 d = 552<\/td><td>20 \u00d7 d = 1104<\/td><\/tr><tr><td>4 G 185<\/td><td>1002368<\/td><td>62.9<\/td><td>7,639.0<\/td><td>8,384.0<\/td><td>385<\/td><td>240<\/td><td>380<\/td><td>10 \u00d7 d = 629<\/td><td>20 \u00d7 d = 1258<\/td><\/tr><tr><td>4 G 240<\/td><td>1002702<\/td><td>69.8<\/td><td>10,013.0<\/td><td>11,292.0<\/td><td>453<\/td><td>250<\/td><td>410<\/td><td>10 \u00d7 d = 698<\/td><td>20 \u00d7 d = 1396<\/td><\/tr><\/tbody><\/table><\/div><div class=\"scroll\"><table style=\"min-width:1600px\"><caption>2YSL(St)CYK-J 0.6\/1 kV EMV-UV \u00b7 black UV-resistant sheath \u00b7 15 sizes<\/caption><thead><tr><th>Dimension n \u00d7 mm\u00b2<\/th><th>Item no. (ref.)<\/th><th>Outer \u00d8 mm<\/th><th>Cu index kg\/km<\/th><th>Weight kg\/km<\/th><th>Current capacity A (30 \u00b0C)<\/th><th>C core\/core nF\/km<\/th><th>C core\/screen nF\/km<\/th><th>Min. bend fixed mm<\/th><th>Min. bend moved mm<\/th><\/tr><\/thead><tbody><tr><td>4 G 1.5<\/td><td>1002327<\/td><td>10.8<\/td><td>95.0<\/td><td>212.0<\/td><td>18<\/td><td>70<\/td><td>110<\/td><td>5 \u00d7 d = 54<\/td><td>10 \u00d7 d = 108<\/td><\/tr><tr><td>4 G 2.5<\/td><td>1002328<\/td><td>12.3<\/td><td>150.0<\/td><td>270.0<\/td><td>26<\/td><td>80<\/td><td>130<\/td><td>7.5 \u00d7 d = 92<\/td><td>15 \u00d7 d = 184<\/td><\/tr><tr><td>4 G 4<\/td><td>1002331<\/td><td>14.5<\/td><td>235.0<\/td><td>362.0<\/td><td>34<\/td><td>90<\/td><td>150<\/td><td>7.5 \u00d7 d = 109<\/td><td>15 \u00d7 d = 218<\/td><\/tr><tr><td>4 G 6<\/td><td>1002744<\/td><td>16.2<\/td><td>320.0<\/td><td>582.0<\/td><td>44<\/td><td>110<\/td><td>170<\/td><td>7.5 \u00d7 d = 122<\/td><td>15 \u00d7 d = 243<\/td><\/tr><tr><td>4 G 10<\/td><td>1002329<\/td><td>19.5<\/td><td>533.0<\/td><td>794.0<\/td><td>61<\/td><td>120<\/td><td>190<\/td><td>7.5 \u00d7 d = 146<\/td><td>15 \u00d7 d = 292<\/td><\/tr><tr><td>4 G 16<\/td><td>1002337<\/td><td>22.4<\/td><td>789.0<\/td><td>1,188.0<\/td><td>82<\/td><td>130<\/td><td>220<\/td><td>10 \u00d7 d = 224<\/td><td>20 \u00d7 d = 448<\/td><\/tr><tr><td>4 G 25<\/td><td>1002323<\/td><td>27.0<\/td><td>1,236.0<\/td><td>1,713.0<\/td><td>108<\/td><td>145<\/td><td>230<\/td><td>10 \u00d7 d = 270<\/td><td>20 \u00d7 d = 540<\/td><\/tr><tr><td>4 G 35<\/td><td>1002322<\/td><td>30.7<\/td><td>1,662.0<\/td><td>2,402.0<\/td><td>135<\/td><td>150<\/td><td>260<\/td><td>10 \u00d7 d = 307<\/td><td>20 \u00d7 d = 614<\/td><\/tr><tr><td>4 G 50<\/td><td>1002365<\/td><td>35.3<\/td><td>2,345.0<\/td><td>2,718.0<\/td><td>168<\/td><td>175<\/td><td>290<\/td><td>10 \u00d7 d = 353<\/td><td>20 \u00d7 d = 706<\/td><\/tr><tr><td>4 G 70<\/td><td>1002745<\/td><td>40.2<\/td><td>3,196.0<\/td><td>3,636.0<\/td><td>207<\/td><td>180<\/td><td>300<\/td><td>10 \u00d7 d = 402<\/td><td>20 \u00d7 d = 804<\/td><\/tr><tr><td>4 G 95<\/td><td>1002387<\/td><td>45.0<\/td><td>4,316.0<\/td><td>4,700.0<\/td><td>250<\/td><td>195<\/td><td>320<\/td><td>10 \u00d7 d = 450<\/td><td>20 \u00d7 d = 900<\/td><\/tr><tr><td>4 G 120<\/td><td>1002746<\/td><td>52.1<\/td><td>5,435.0<\/td><td>5,699.0<\/td><td>292<\/td><td>215<\/td><td>340<\/td><td>10 \u00d7 d = 521<\/td><td>20 \u00d7 d = 1042<\/td><\/tr><tr><td>4 G 150<\/td><td>1002330<\/td><td>55.2<\/td><td>6,394.0<\/td><td>7,043.0<\/td><td>335<\/td><td>230<\/td><td>360<\/td><td>10 \u00d7 d = 552<\/td><td>20 \u00d7 d = 1104<\/td><\/tr><tr><td>4 G 185<\/td><td>1002293<\/td><td>62.9<\/td><td>7,639.0<\/td><td>8,384.0<\/td><td>385<\/td><td>240<\/td><td>380<\/td><td>10 \u00d7 d = 629<\/td><td>20 \u00d7 d = 1258<\/td><\/tr><tr><td>4 G 240<\/td><td>1002747<\/td><td>69.8<\/td><td>10,013.0<\/td><td>11,292.0<\/td><td>453<\/td><td>250<\/td><td>410<\/td><td>10 \u00d7 d = 698<\/td><td>20 \u00d7 d = 1396<\/td><\/tr><\/tbody><\/table><\/div><div class=\"scroll\"><table style=\"min-width:1600px\"><caption>2YSL(St)CYK-J 0.6\/1 kV EMV-3PLUS-UV \u00b7 symmetrical 3 + 3 PE design \u00b7 black \u00b7 15 sizes<\/caption><thead><tr><th>Dimension n \u00d7 mm\u00b2<\/th><th>Item no. (ref.)<\/th><th>Outer \u00d8 mm<\/th><th>Cu index kg\/km<\/th><th>Weight kg\/km<\/th><th>Current capacity A (30 \u00b0C)<\/th><th>C core\/core nF\/km<\/th><th>C core\/screen nF\/km<\/th><th>Min. bend fixed mm<\/th><th>Min. bend moved mm<\/th><\/tr><\/thead><tbody><tr><td>3 x 1.5 + 3 G 0.25<\/td><td>1003431<\/td><td>10.2<\/td><td>91.0<\/td><td>144.0<\/td><td>18<\/td><td>70<\/td><td>110<\/td><td>5 \u00d7 d = 51<\/td><td>10 \u00d7 d = 102<\/td><\/tr><tr><td>3 x 2.5 + 3 G 0.5<\/td><td>1002390<\/td><td>11.6<\/td><td>152.0<\/td><td>264.0<\/td><td>26<\/td><td>80<\/td><td>130<\/td><td>5 \u00d7 d = 58<\/td><td>10 \u00d7 d = 116<\/td><\/tr><tr><td>3 x 4 + 3 G 0.75<\/td><td>1003138<\/td><td>13.2<\/td><td>224.0<\/td><td>333.0<\/td><td>34<\/td><td>90<\/td><td>150<\/td><td>7.5 \u00d7 d = 99<\/td><td>15 \u00d7 d = 198<\/td><\/tr><tr><td>3 x 6 + 3 G 1<\/td><td>1002719<\/td><td>15.0<\/td><td>298.0<\/td><td>429.0<\/td><td>44<\/td><td>110<\/td><td>170<\/td><td>7.5 \u00d7 d = 112<\/td><td>15 \u00d7 d = 225<\/td><\/tr><tr><td>3 x 10 + 3 G 1.5<\/td><td>1002660<\/td><td>18.4<\/td><td>491.0<\/td><td>692.0<\/td><td>61<\/td><td>120<\/td><td>190<\/td><td>7.5 \u00d7 d = 138<\/td><td>15 \u00d7 d = 276<\/td><\/tr><tr><td>3 x 16 + 3 G 2.5<\/td><td>1002890<\/td><td>21.5<\/td><td>723.0<\/td><td>979.0<\/td><td>82<\/td><td>130<\/td><td>220<\/td><td>10 \u00d7 d = 215<\/td><td>20 \u00d7 d = 430<\/td><\/tr><tr><td>3 x 25 + 3 G 4<\/td><td>1002720<\/td><td>25.3<\/td><td>1,138.0<\/td><td>1,404.0<\/td><td>108<\/td><td>145<\/td><td>230<\/td><td>10 \u00d7 d = 253<\/td><td>20 \u00d7 d = 506<\/td><\/tr><tr><td>3 x 35 + 3 G 6<\/td><td>1002721<\/td><td>28.3<\/td><td>1,535.0<\/td><td>1,813.0<\/td><td>135<\/td><td>150<\/td><td>260<\/td><td>10 \u00d7 d = 283<\/td><td>20 \u00d7 d = 566<\/td><\/tr><tr><td>3 x 50 + 3 G 10<\/td><td>1003001<\/td><td>33.0<\/td><td>2,208.0<\/td><td>2,501.0<\/td><td>168<\/td><td>175<\/td><td>290<\/td><td>10 \u00d7 d = 330<\/td><td>20 \u00d7 d = 660<\/td><\/tr><tr><td>3 x 70 + 3 G 10<\/td><td>1002661<\/td><td>36.9<\/td><td>2,871.0<\/td><td>3,112.0<\/td><td>207<\/td><td>180<\/td><td>300<\/td><td>10 \u00d7 d = 369<\/td><td>20 \u00d7 d = 738<\/td><\/tr><tr><td>3 x 95 + 3 G 16<\/td><td>1002662<\/td><td>40.9<\/td><td>3,953.0<\/td><td>4,492.0<\/td><td>250<\/td><td>195<\/td><td>320<\/td><td>10 \u00d7 d = 409<\/td><td>20 \u00d7 d = 818<\/td><\/tr><tr><td>3 x 120 + 3 G 16<\/td><td>1002722<\/td><td>46.5<\/td><td>4,836.0<\/td><td>5,301.0<\/td><td>292<\/td><td>215<\/td><td>340<\/td><td>10 \u00d7 d = 465<\/td><td>20 \u00d7 d = 930<\/td><\/tr><tr><td>3 x 150 + 3 G 25<\/td><td>1002380<\/td><td>51.0<\/td><td>5,421.0<\/td><td>6,097.0<\/td><td>335<\/td><td>230<\/td><td>360<\/td><td>10 \u00d7 d = 510<\/td><td>20 \u00d7 d = 1020<\/td><\/tr><tr><td>3 x 185 + 3 G 35<\/td><td>1002999<\/td><td>58.2<\/td><td>7,041.0<\/td><td>7,597.0<\/td><td>382<\/td><td>240<\/td><td>380<\/td><td>10 \u00d7 d = 582<\/td><td>20 \u00d7 d = 1164<\/td><\/tr><tr><td>3 x 240 + 3 G 50<\/td><td>1003427<\/td><td>63.0<\/td><td>9,148.0<\/td><td>10,379.0<\/td><td>453<\/td><td>250<\/td><td>410<\/td><td>10 \u00d7 d = 630<\/td><td>20 \u00d7 d = 1260<\/td><\/tr><\/tbody><\/table><\/div><\/section>\n<section id=\"3plus\"><h2>6. 4-core versus symmetrical 3PLUS<\/h2><p>In a 4-core cable the single PE sits asymmetrically relative to the three phases, so the phase currents induce a net voltage on it. In 3PLUS, three smaller PE cores sit in the gaps between the phases; the induced voltages cancel. The 3PLUS version is also smaller and lighter at the same phase cross-section, since the three PE cores fill interstices.<\/p><div class=\"scroll\"><table style=\"min-width:1100px\"><caption>4-core vs. 3PLUS at equal phase cross-section<\/caption><thead><tr><th>4-core<\/th><th>3PLUS<\/th><th>4-core \u00d8 mm<\/th><th>3PLUS \u00d8 mm<\/th><th>4-core kg\/km<\/th><th>3PLUS kg\/km<\/th><\/tr><\/thead><tbody><tr><td>4 G 1.5<\/td><td>3 x 1.5 + 3 G 0.25<\/td><td>10.8<\/td><td>10.2<\/td><td>212.0<\/td><td>144.0<\/td><\/tr><tr><td>4 G 2.5<\/td><td>3 x 2.5 + 3 G 0.5<\/td><td>12.3<\/td><td>11.6<\/td><td>270.0<\/td><td>264.0<\/td><\/tr><tr><td>4 G 4<\/td><td>3 x 4 + 3 G 0.75<\/td><td>14.5<\/td><td>13.2<\/td><td>362.0<\/td><td>333.0<\/td><\/tr><tr><td>4 G 6<\/td><td>3 x 6 + 3 G 1<\/td><td>16.2<\/td><td>15.0<\/td><td>582.0<\/td><td>429.0<\/td><\/tr><tr><td>4 G 10<\/td><td>3 x 10 + 3 G 1.5<\/td><td>19.5<\/td><td>18.4<\/td><td>794.0<\/td><td>692.0<\/td><\/tr><tr><td>4 G 16<\/td><td>3 x 16 + 3 G 2.5<\/td><td>22.4<\/td><td>21.5<\/td><td>1,188.0<\/td><td>979.0<\/td><\/tr><tr><td>4 G 25<\/td><td>3 x 25 + 3 G 4<\/td><td>27.0<\/td><td>25.3<\/td><td>1,713.0<\/td><td>1,404.0<\/td><\/tr><tr><td>4 G 35<\/td><td>3 x 35 + 3 G 6<\/td><td>30.7<\/td><td>28.3<\/td><td>2,402.0<\/td><td>1,813.0<\/td><\/tr><tr><td>4 G 50<\/td><td>3 x 50 + 3 G 10<\/td><td>35.3<\/td><td>33.0<\/td><td>2,718.0<\/td><td>2,501.0<\/td><\/tr><tr><td>4 G 70<\/td><td>3 x 70 + 3 G 10<\/td><td>40.2<\/td><td>36.9<\/td><td>3,636.0<\/td><td>3,112.0<\/td><\/tr><tr><td>4 G 95<\/td><td>3 x 95 + 3 G 16<\/td><td>45.0<\/td><td>40.9<\/td><td>4,700.0<\/td><td>4,492.0<\/td><\/tr><tr><td>4 G 120<\/td><td>3 x 120 + 3 G 16<\/td><td>52.1<\/td><td>46.5<\/td><td>5,699.0<\/td><td>5,301.0<\/td><\/tr><tr><td>4 G 150<\/td><td>3 x 150 + 3 G 25<\/td><td>55.2<\/td><td>51.0<\/td><td>7,043.0<\/td><td>6,097.0<\/td><\/tr><tr><td>4 G 185<\/td><td>3 x 185 + 3 G 35<\/td><td>62.9<\/td><td>58.2<\/td><td>8,384.0<\/td><td>7,597.0<\/td><\/tr><tr><td>4 G 240<\/td><td>3 x 240 + 3 G 50<\/td><td>69.8<\/td><td>63.0<\/td><td>11,292.0<\/td><td>10,379.0<\/td><\/tr><\/tbody><\/table><\/div><\/section>\n<section id=\"install\"><h2>7. Installation and termination<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1900 610\" role=\"img\" aria-label=\"termination\"><rect width=\"100%\" height=\"100%\" fill=\"#06131b\"><\/rect><text x=\"65\" y=\"70\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"38\" font-weight=\"700\">Correct 360\u00b0 termination versus pigtail<\/text><g font-family=\"Arial\" fill=\"#eaf6fa\">\n<g transform=\"translate(80 130)\"><rect width=\"820\" height=\"440\" rx=\"18\" fill=\"#0c2630\" stroke=\"#62df9c\" stroke-width=\"4\"\/><text x=\"30\" y=\"55\" font-size=\"26\" font-weight=\"700\" fill=\"#62df9c\">\u2714 EMC gland, 360\u00b0 contact<\/text>\n<rect x=\"340\" y=\"120\" width=\"120\" height=\"220\" fill=\"#37474f\" stroke=\"#d9edf0\" stroke-width=\"3\"\/><path d=\"M40 230H340\" stroke=\"#1a1d20\" stroke-width=\"60\"\/><path d=\"M300 230H400\" stroke=\"#8e98a0\" stroke-width=\"66\"\/><path d=\"M460 230H780\" stroke=\"#e7a86d\" stroke-width=\"12\"\/><path d=\"M460 200H780M460 260H780\" stroke=\"#9aa4a8\" stroke-width=\"10\"\/>\n<text x=\"30\" y=\"400\" font-size=\"19\">Braid folded back and clamped all round: lowest inductance<\/text><\/g>\n<g transform=\"translate(1000 130)\"><rect width=\"820\" height=\"440\" rx=\"18\" fill=\"#0c2630\" stroke=\"#ff777f\" stroke-width=\"4\"\/><text x=\"30\" y=\"55\" font-size=\"26\" font-weight=\"700\" fill=\"#ff777f\">\u2718 Pigtail<\/text>\n<path d=\"M40 230H340\" stroke=\"#1a1d20\" stroke-width=\"60\"\/><path d=\"M340 230H780\" stroke=\"#e7a86d\" stroke-width=\"12\"\/><path d=\"M340 230Q420 330 520 350L640 350\" stroke=\"#8e98a0\" stroke-width=\"10\" fill=\"none\"\/><rect x=\"640\" y=\"330\" width=\"60\" height=\"40\" fill=\"#62df9c\"\/>\n<text x=\"30\" y=\"400\" font-size=\"19\">Each cm of pigtail adds roughly 10 nH: screening collapses at MHz frequencies<\/text><\/g><\/g><\/svg><div class=\"svg-caption\">Figure 3: Screen termination practice at drive and motor.<\/div><\/div><div class=\"formula\">1. Bond the screen 360\u00b0 at the drive and at the motor terminal box using EMC glands.\n2. Keep unscreened conductor lengths at terminations as short as possible.\n3. Connect PE cores in addition to the screen; the screen is not a substitute for PE.\n4. Separate motor leads from signal cables (typical guidance \u2265 0.3 m or metal divider).\n5. For long leads check the drive manufacturer&#8217;s maximum cable length; use output filters where required.\n6. Black K-versions for outdoor runs; transparent versions indoors. Not for burial.<\/div><\/section>\n<section id=\"compare\"><h2>8. Comparison<\/h2><div class=\"scroll\"><table style=\"min-width:1200px\"><caption>VFD cable types compared<\/caption><thead><tr><th>Type<\/th><th>Insulation<\/th><th>Screen<\/th><th>Capacitance<\/th><th>Typical use<\/th><\/tr><\/thead><tbody><tr><td>PVC-insulated YCY<\/td><td>PVC (\u03b5<sub>r<\/sub> \u2248 5\u20136)<\/td><td>Cu braid \u224885 %<\/td><td>High<\/td><td>Short VFD leads, control<\/td><\/tr><tr><td><strong>2YSL(St)CY-J EMV<\/strong><\/td><td><strong>PE (\u03b5<sub>r<\/sub> \u2248 2.3)<\/strong><\/td><td><strong>Foil 100 % + Cu braid<\/strong><\/td><td><strong>Low (70\u2013250 nF\/km core\/core)<\/strong><\/td><td><strong>VFD motor leads, long runs<\/strong><\/td><\/tr><tr><td><strong>\u2026 EMV-3PLUS-UV<\/strong><\/td><td><strong>PE<\/strong><\/td><td><strong>Foil + braid<\/strong><\/td><td><strong>Low; symmetrical PE<\/strong><\/td><td><strong>Large drives, \u2265 10 mm\u00b2; outdoor<\/strong><\/td><\/tr><tr><td>NYCWY (concentric)<\/td><td>PVC<\/td><td>Concentric Cu wires<\/td><td>High<\/td><td>Fixed distribution, not optimised for VFD<\/td><\/tr><\/tbody><\/table><\/div><\/section>\n<section id=\"design\"><h2>9. Design calculations<\/h2><div class=\"formula\">Current: table values at 30 \u00b0C ambient \u00d7 f(ambient) \u00d7 f(grouping)\n   e.g. 4 G 95 = 250 A at 30 \u00b0C\nShort-circuit (PVC-sheathed, conductor limit 160 \u00b0C per data sheet): check with I_k = k \u00d7 S \/ \u221at using the drive-side protection\nCapacitive charging current per phase (rough): I_c \u2248 2\u03c0 \u00b7 f_eq \u00b7 C \u00b7 U \u00b7 L\n   longer cable \u2192 higher C\u00b7L \u2192 more drive current and possible derating\nVoltage drop: \u0394U = \u221a3 \u00d7 I \u00d7 L \u00d7 (R cos\u03c6 + X sin\u03c6)\nBending example: 4 G 95 (d = 45.0 mm > 20 mm): fixed 10 \u00d7 d = 450 mm; moved 20 \u00d7 d = 900 mm\n                 4 G 1.5 (d = 10.8 mm \u2264 12 mm): fixed 5 \u00d7 d = 54 mm; moved 10 \u00d7 d = 108 mm<\/div><\/section>\n<section id=\"faq\"><h2>10. Certification, traceability and FAQ<\/h2><p>This cable family is RoHS-conform, CE-conform to the 2014\/35\/EU Low Voltage Directive and LABS-\/silicone-free during production, with flame behaviour to IEC 60332-1. FeiChun Cable holds a complete export certification portfolio \u2014 including CE, UKCA, VDE, EAC, ATEX and IECEx \u2014 and every certificate supplied is checked against the exact type, voltage, factory and standard of the order. Routine tests include conductor resistance, 4 kV voltage test, insulation resistance, screen continuity and capacitance.<\/p>\n<div class=\"cards\"><div class=\"card\"><h3>Why PE insulation rather than PVC or XLPE?<\/h3><p>PE has a relative permittivity of about 2.3, less than half that of PVC. Lower capacitance means lower capacitive charging current from each PWM edge, less drive derating and longer permissible motor-cable lengths.<\/p><\/div><div class=\"card\"><h3>When should I choose 3PLUS?<\/h3><p>For larger drives \u2014 typically from about 10 mm\u00b2 \u2014 and long leads. Three PE cores placed symmetrically between the phases cancel the induced voltages on the PE path, reducing circulating currents and bearing currents.<\/p><\/div><div class=\"card\"><h3>Transparent or black?<\/h3><p>Transparent for indoor installation; black K-versions have a UV-resistant sheath for outdoor use. Electrical data are identical.<\/p><\/div><div class=\"card\"><h3>Can I earth the screen at one end only?<\/h3><p>Not for VFD motor leads. Bond 360\u00b0 at both the drive and the motor to give the common-mode current a low-impedance return path.<\/p><\/div><div class=\"card\"><h3>What do 700\/1 200 V and 900\/1 800 V mean?<\/h3><p>The highest permissible continuous operating voltages: 700 V phase-to-earth and 1 200 V phase-to-phase for AC, and 900\/1 800 V for DC, giving margin for VFD DC-link and reflected-wave peaks.<\/p><\/div><div class=\"card\"><h3>Is it a drag-chain cable?<\/h3><p>No. Fixed laying and occasional free movement without tensile stress or forced guidance.<\/p><\/div><\/div>\n<div class=\"contact\"><div><strong>FeiChun Cable \/ \u98de\u7eaf\u7535\u7f06<\/strong><br>Technical and project enquiries: <a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a><\/div><div><strong>Manufacturing in China, export support<\/strong><br><a href=\"tel:+8613855123218\">+86 13855123218<\/a><\/div><\/div><\/section><\/main>\n<footer><div class=\"wrap\"><div class=\"grid\"><div><div class=\"tag\">FEICHUN CABLE<\/div><h2>Low capacitance, double screen, symmetrical PE \u2014 engineered for frequency converters<\/h2><p class=\"small\">For drives, pumps, fans, conveyors and machine tools.<\/p><\/div><div><p><strong>Tech@feichuncables.com<\/strong><\/p><p><strong>+86 13855123218<\/strong><\/p><p class=\"small\">Document FC-ART-VFD-2026-901E. Final values are governed by the approved datasheet, order drawing, batch test reports and certificate scope.<\/p><\/div><\/div><\/div><\/footer><\/body><\/html>\n","protected":false},"excerpt":{"rendered":"An engineering guide to the VFD motor cable family: PE insulation for low capacitance, aluminium-laminated foil plus tinned copper braid for full-spectrum screening, in a transparent indoor version, a black UV-resistant version and a symmetrical 3PLUS design with three PE cores.","protected":false},"author":1,"featured_media":77229,"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":[66,94,464,9563,7,1,56,61737],"tags":[16,171,152,107,176,111,139,214,204,17],"class_list":["post-77227","post","type-post","status-publish","format-standard","has-post-thumbnail","category-common-problems-encountered-in-cable-applications","category-din-vde-0250-mining-cable","category-flexible-cables-with-high-bending-life-and-fatigue-resistance","category-medium-voltage-cable","category-mining-trailing-cable","category-uncategorized","category-reeling-cable","category----lapp","tag-din-vde-0250","tag-explosion-proof-mining-cable","tag-heavy-duty-mining-cable","tag-heavy-duty-e-loader-mining-cable","tag-icea-s-75-381-2","tag-mining-cable","tag-mining-cables","tag-mining-power-cable","tag-mining-trailing-cable","tag-reeling-cable","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/77227","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=77227"}],"version-history":[{"count":1,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/77227\/revisions"}],"predecessor-version":[{"id":77230,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/77227\/revisions\/77230"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/77229"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=77227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=77227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=77227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}