6\/10KV REELING CABLE 3CX120 & 2CX70\/2+18FO | Feichun Engineering Guide<\/title><meta name=\"description\" content=\"English engineering guide to the 6\/10KV REELING CABLE 3CX120 & 2CX70\/2+18FO configuration, covering MV power, split earth, optical-fibre integration, reel mechanics, RFQ control and Feichun equivalent engineering.\"><meta name=\"keywords\" content=\"6\/10KV reeling cable, 3CX120, 2CX70\/2, 18FO, medium voltage fibre optic cable, crane reeling cable, ship unloader cable, port crane cable, Feichun Cable\"><style>\n:root{--bg:#070b10;--p:#0d1921;--p2:#102733;--ink:#e8f3f5;--muted:#a9bec7;--line:#284b5b;--c:#55dff7;--g:#a6ded9;--gold:#f0c865;--r:#ff9297;--source:#9ed7f2;--derived:#bfe5a5;--tbc:#ffcf9c}*{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(240,200,101,.18),transparent 34%),linear-gradient(135deg,#041018,#0d4652)}h1{font-size:48px;line-height:1.12;max-width:1730px}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:1690px}.badges,.meta{display:flex;gap:10px;flex-wrap:wrap}.badges span,.meta span{background:#071821;border:1px solid var(--line);border-radius:22px;padding:8px 14px;font-weight:bold}.cards,.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(245px,1fr));gap:15px;margin:22px 0}.card,.box,.note,.warn{background:var(--p);border:1px solid var(--line);border-radius:10px;padding:18px}.card{border-top:5px solid var(--c)}.value{font-size:30px;color:var(--c);font-weight:bold}.note{border-left:7px solid var(--c)}.warn{border-left:7px solid var(--r);margin:13px 0}.toc{background:var(--p);border:1px solid var(--line);padding:20px;border-left:7px solid var(--c)}.toc ol{columns:2}.scroll{overflow:auto}table{width:100%;border-collapse:collapse;background:#071821;min-width:1240px}th,td{border:1px solid var(--line);padding:8px 9px;vertical-align:top}th{background:var(--p2);color:#f4f9fb}td.key{color:var(--c);font-weight:bold}td.source{color:var(--source)}td.derived{color:var(--derived);font-weight:bold}td.tbc{color:var(--tbc);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}.svg-caption{font-size:13px;color:#91a9b4;margin:8px 2px 0}.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}.source-list li{margin:8px 0}blockquote{margin:22px 0;padding:20px 24px;background:#071821;border-left:7px solid var(--gold);font-size:20px;color:#fff1c8}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><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"TechArticle\",\"headline\":\"6\/10 kV Reeling Cable 3\u00d7120 + 2\u00d770\/2 + 18FO Engineering Guide\",\"description\":\"Engineering guide for the supplied medium-voltage power, earth and 18-fibre reeling-cable configuration, with exact data boundaries and RFQ controls.\",\"author\":{\"@type\":\"Organization\",\"name\":\"Feichun Cable\"},\"publisher\":{\"@type\":\"Organization\",\"name\":\"Feichun Cable\"}}<\/script><\/head><body><section class=\"hero\"><div class=\"wrap\"><div class=\"badges\"><span>FEICHUN CABLE<\/span><span>6\/10 kV REELING<\/span><span>3\u00d7120 mm\u00b2<\/span><span>2\u00d770\/2 EARTH<\/span><span>18FO<\/span><span>MEDIUM VOLTAGE<\/span><span>POWER + DATA<\/span><span>RFQ ENGINEERING GUIDE<\/span><\/div><h1>6\/10KV REELING CABLE 3CX120 & 2CX70\/2+18FO \u2014 integrated medium-voltage power, earth and optical-fibre reeling cable<\/h1><p class=\"lead\">The supplied procurement description identifies a composite reeling cable with a 6\/10 kV rating, three nominal 120 mm\u00b2 power cores, a <code>2CX70\/2<\/code> earth-conductor notation and an integrated <code>18FO<\/code> optical-fibre count. The working engineering notation is <b>6\/10 kV reeling cable \u2014 3\u00d7120 + 2\u00d770\/2 + 18FO<\/b>. This article preserves the buyer string exactly, explains the design questions it creates and keeps all unprovided construction, dimension, rating, fibre and certification values as project-confirmation fields.<\/p><div class=\"meta\"><span>U\u2080\/U: 6\/10 kV<\/span><span>3\u00d7120 mm\u00b2 power cores<\/span><span>2\u00d770\/2 notation retained<\/span><span>18FO optical count<\/span><span>Exact OD: TBC<\/span><span>Exact mass: TBC<\/span><span>Dynamic radius: TBC<\/span><span>Fibre grade: TBC<\/span><span>Functional-equivalent engineering<\/span><\/div><\/div><\/section><main class=\"wrap\"><div class=\"cards\"><div class=\"card\"><div>Voltage class<\/div><div class=\"value\">6\/10 kV<\/div><div>Medium-voltage rating supplied by the buyer.<\/div><\/div><div class=\"card\"><div>Power cores<\/div><div class=\"value\">3\u00d7120<\/div><div>Three nominal 120 mm\u00b2 power cores.<\/div><\/div><div class=\"card\"><div>Earth notation<\/div><div class=\"value\">2\u00d770\/2<\/div><div>Split earth-conductor notation; exact layout requires the drawing.<\/div><\/div><div class=\"card\"><div>Optical channel<\/div><div class=\"value\">18FO<\/div><div>18 optical fibres; grade, buffer and connector interface are TBC.<\/div><\/div><\/div><div class=\"toc\"><h3>Contents<\/h3><ol><li>Engineering position<\/li><li>How to read the designation<\/li><li>Evidence and source hierarchy<\/li><li>Reference architecture<\/li><li>Power, earth and fibre topology<\/li><li>Exact target data matrix<\/li><li>Electrical design boundary<\/li><li>Optical-fibre engineering<\/li><li>Reeling mechanics<\/li><li>Application scenes<\/li><li>Installation and failure controls<\/li><li>Feichun functional equivalent<\/li><li>Certification and documents<\/li><li>RFQ release checklist<\/li><li>Source audit<\/li><\/ol><\/div><h2>1. Engineering position: one cable, three different reliability problems<\/h2><div class=\"note\"><b>The 120 mm\u00b2 copper is only one part of the engineering problem.<\/b> A 6\/10 kV reeling cable with an earth path and 18 optical fibres has to maintain MV insulation integrity, protective continuity and optical transmission while the complete assembly is repeatedly bent, pulled, compressed and guided through a machine. The cable body, reel, transition zone and terminations must be treated as one system.<\/div><div class=\"grid\"><div class=\"box\"><b>MV power function<\/b><br>Coordinate conductor resistance, insulation system, screens, voltage drop, short-circuit duty, terminations and system earthing for the 6\/10 kV circuit.<\/div><div class=\"box\"><b>Protective-earth function<\/b><br>Preserve the intended low-impedance fault-current path through the 2\u00d770\/2 arrangement without allowing the earth conductors to become an uncontrolled pulling member.<\/div><div class=\"box\"><b>Optical function<\/b><br>Protect 18 fibres from tensile strain, microbending, macrobending, crushing, moisture and termination damage while the power cores are moving.<\/div><div class=\"box\"><b>Reeling function<\/b><br>Control drum geometry, layer pressure, fleet angle, acceleration, torsion, guide contact, mass and end restraint.<\/div><\/div><div class=\"warn\"><b>Data rule:<\/b> the supplied description does not release conductor material\/class, insulation or sheath compound, screen structure, outer diameter, mass, current rating, dynamic radius, travel speed, optical grade, test voltage or certificate scope. None of those values is invented in this article.<\/div><h2>2. How to read the designation<\/h2><div class=\"scroll\"><table><thead><tr><th>Raw field<\/th><th>Engineering reading<\/th><th>Quotation consequence<\/th><th>Status<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">6\/10KV REELING CABLE<\/td><td>A 6\/10 kV medium-voltage cable intended for repeated machine movement.<\/td><td>Confirm system earthing, U\u2098, test level, travel mode, reel geometry and dynamic qualification.<\/td><td class=\"source\">User-supplied<\/td><\/tr><tr><td class=\"key\">3CX120<\/td><td>Three nominal 120 mm\u00b2 power cores; the letter X is retained as buyer spelling rather than treated as a complete type code.<\/td><td>Confirm conductor material, flexibility class, insulation, semi-conductive screens and core identification.<\/td><td class=\"derived\">User-supplied \/ interpretation<\/td><\/tr><tr><td class=\"key\">2CX70\/2<\/td><td>Two earth-related sections described by the 70\/2 notation.<\/td><td>Confirm whether the notation means two separate 70\/2 sections, the actual copper area, screen relationship and termination method.<\/td><td class=\"tbc\">User-supplied \/ drawing required<\/td><\/tr><tr><td class=\"key\">+18FO<\/td><td>An integrated optical unit containing 18 fibres, subject to confirmation of the fibre construction.<\/td><td>Specify multimode\/singlemode, fibre grade, buffer\/tube, attenuation, bandwidth, wavelength, connector and test method.<\/td><td class=\"derived\">User-supplied \/ interpretation<\/td><\/tr><\/tbody><\/table><\/div><div class=\"grid\"><div class=\"box\"><b>Normalised search phrase<\/b><br><code>6\/10 kV 3\u00d7120 + 2\u00d770\/2 + 18FO medium-voltage reeling cable<\/code><\/div><div class=\"box\"><b>What must not be assumed<\/b><br>Do not assume a specific brand, model code, cable standard, rubber compound, fibre mode, screen type, current rating or minimum radius from the short description.<\/div><div class=\"box\"><b>Why 18FO changes the design<\/b><br>The optical unit is not an accessory added outside the cable. Its location, buffer, strain control and bend envelope affect the complete laid-up construction.<\/div><div class=\"box\"><b>Why the earth notation matters<\/b><br>The 2\u00d770\/2 arrangement influences fault-current capability, symmetry, screen bonding, cable balance and the termination package.<\/div><\/div><h2>3. Evidence and source hierarchy<\/h2><div class=\"scroll\"><table><thead><tr><th>Reference<\/th><th>Useful contribution<\/th><th>How it is used here<\/th><th>Boundary<\/th><\/tr><\/thead><tbody><tr><td class=\"key\"><a href=\"https:\/\/www.52wmb.com\/buyer\/83602415\" target=\"_blank\" rel=\"nofollow noopener\">public trade-record search trace<\/a><\/td><td>A public trade-record page contains a longer related procurement description with the same 6\/10 kV, 3\u00d7120, 2\u00d770\/2 and 18FO configuration.<\/td><td>Search trace only: it helps engineers locate the configuration in public procurement data.<\/td><td>It is not a manufacturer datasheet; no shipment weight, price or contact details are copied into this article.<\/td><\/tr><tr><td class=\"key\"><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/71892\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60502-2<\/a><\/td><td>IEC 60502-2 provides medium-voltage extruded-insulation cable construction and test context.<\/td><td>Use as a standard-verification reference when the purchaser specifies an MV product standard.<\/td><td>It does not by itself qualify a special reeling cable, integrated fibre unit or reel duty.<\/td><\/tr><tr><td class=\"key\"><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/67229\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60794-3<\/a><\/td><td>IEC 60794-3 provides optical-fibre cable specification context.<\/td><td>Use as a reference when establishing the optical test and documentation plan.<\/td><td>The integrated power-plus-fibre moving cable still needs project-specific mechanical and optical qualification.<\/td><\/tr><tr><td class=\"key\"><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/71891\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60228<\/a><\/td><td>IEC 60228 provides nominal conductor area, resistance and conductor-class framework.<\/td><td>Use after the exact flexible conductor construction is selected and released.<\/td><td>The reference does not prove the conductor class of this target.<\/td><\/tr><\/tbody><\/table><\/div><blockquote>Public search evidence can establish a configuration trail. It cannot release the manufacturing drawing. The controlled Feichun quotation, construction drawing, test plan and certificate scope must govern the final cable.<\/blockquote><h2>4. Reference architecture<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"1900\" height=\"1250\" viewBox=\"0 0 1900 1250\" role=\"img\" aria-label=\"Schematic cross-section of a 6\/10 kV three by 120 plus two by 70 slash 2 plus 18 optical fibre reeling cable\">\n<defs>\n <radialGradient id=\"cx-jacket\" cx=\"24%\" cy=\"18%\"><stop stop-color=\"#8c4858\"\/><stop offset=\".62\" stop-color=\"#4a2531\"\/><stop offset=\"1\" stop-color=\"#1c1018\"\/><\/radialGradient>\n <radialGradient id=\"cx-inner\" cx=\"24%\" cy=\"18%\"><stop stop-color=\"#aa6972\"\/><stop offset=\".72\" stop-color=\"#5a303c\"\/><stop offset=\"1\" stop-color=\"#2a1722\"\/><\/radialGradient>\n <radialGradient id=\"cx-ins\" cx=\"25%\" cy=\"20%\"><stop stop-color=\"#eef8ec\"\/><stop offset=\".7\" stop-color=\"#a6c7ad\"\/><stop offset=\"1\" stop-color=\"#55715e\"\/><\/radialGradient>\n <radialGradient id=\"cx-cu\" cx=\"24%\" cy=\"18%\"><stop stop-color=\"#f7d69c\"\/><stop offset=\".65\" stop-color=\"#bd7439\"\/><stop offset=\"1\" stop-color=\"#6b301c\"\/><\/radialGradient>\n <radialGradient id=\"cx-earth\" cx=\"24%\" cy=\"18%\"><stop stop-color=\"#f2efae\"\/><stop offset=\".65\" stop-color=\"#9c9a3b\"\/><stop offset=\"1\" stop-color=\"#4d5021\"\/><\/radialGradient>\n <pattern id=\"cx-braid\" width=\"30\" height=\"30\" patternUnits=\"userSpaceOnUse\"><path d=\"M-8 8L22 38M8-8L38 22\" stroke=\"#efca70\" stroke-width=\"6\"\/><path d=\"M-8 22L22-8M8 38L38 8\" stroke=\"#70949b\" stroke-width=\"4\"\/><\/pattern>\n <pattern id=\"cx-strand\" width=\"16\" height=\"16\" patternUnits=\"userSpaceOnUse\"><circle cx=\"4\" cy=\"4\" r=\"3\" fill=\"#ffd99b\"\/><circle cx=\"12\" cy=\"4\" r=\"3\" fill=\"#984824\"\/><circle cx=\"8\" cy=\"12\" r=\"3\" fill=\"#d4793c\"\/><\/pattern>\n <marker id=\"cx-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0L12 4L0 8Z\" fill=\"#d9edf0\"\/><\/marker>\n<\/defs>\n<rect width=\"1900\" height=\"1250\" fill=\"#06131b\"\/>\n<text x=\"60\" y=\"64\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">6\/10 kV 3\u00d7120 + 2\u00d770\/2 + 18FO \u2014 integrated reeling-cable architecture<\/text>\n<text x=\"60\" y=\"104\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">Three MV power cores \u00b7 two split earth sections \u00b7 an 18-fibre optical unit \u00b7 dynamic sheath and reinforcement system.<\/text>\n<text x=\"60\" y=\"140\" fill=\"#ffaaa5\" font-family=\"Arial\" font-size=\"16\">Schematic only \u2014 not to scale and not a released manufacturing drawing. Layer materials, screens, fibre grade and dimensions require project confirmation.<\/text>\n<g transform=\"translate(625 700)\">\n <circle r=\"492\" fill=\"url(#cx-jacket)\" stroke=\"#e36b79\" stroke-width=\"16\"\/>\n <circle r=\"441\" fill=\"url(#cx-braid)\" stroke=\"#efca70\" stroke-width=\"13\" stroke-dasharray=\"18 9\"\/>\n <circle r=\"402\" fill=\"url(#cx-inner)\" stroke=\"#f1a3a4\" stroke-width=\"9\"\/>\n <circle r=\"350\" fill=\"#351d28\" stroke=\"#b96d74\" stroke-width=\"8\" stroke-dasharray=\"9 12\"\/>\n <g stroke=\"#e9f3ef\" stroke-width=\"6\">\n <circle cx=\"0\" cy=\"-160\" r=\"146\" fill=\"url(#cx-ins)\"\/><circle cx=\"0\" cy=\"-160\" r=\"92\" fill=\"url(#cx-cu)\"\/><circle cx=\"0\" cy=\"-160\" r=\"60\" fill=\"url(#cx-strand)\"\/>\n <circle cx=\"-140\" cy=\"95\" r=\"146\" fill=\"url(#cx-ins)\"\/><circle cx=\"-140\" cy=\"95\" r=\"92\" fill=\"url(#cx-cu)\"\/><circle cx=\"-140\" cy=\"95\" r=\"60\" fill=\"url(#cx-strand)\"\/>\n <circle cx=\"140\" cy=\"95\" r=\"146\" fill=\"url(#cx-ins)\"\/><circle cx=\"140\" cy=\"95\" r=\"92\" fill=\"url(#cx-cu)\"\/><circle cx=\"140\" cy=\"95\" r=\"60\" fill=\"url(#cx-strand)\"\/>\n <circle cx=\"-240\" cy=\"-100\" r=\"63\" fill=\"url(#cx-earth)\"\/><circle cx=\"240\" cy=\"-100\" r=\"63\" fill=\"url(#cx-earth)\"\/>\n <circle cx=\"-240\" cy=\"-100\" r=\"38\" fill=\"url(#cx-strand)\"\/><circle cx=\"240\" cy=\"-100\" r=\"38\" fill=\"url(#cx-strand)\"\/>\n <circle cx=\"0\" cy=\"40\" r=\"75\" fill=\"#60333d\" stroke=\"#efca70\" stroke-width=\"5\"\/>\n <\/g>\n <g fill=\"#111e1c\" font-family=\"Arial\" font-weight=\"700\"><text x=\"-30\" y=\"-153\" font-size=\"24\">P1<\/text><text x=\"-171\" y=\"103\" font-size=\"24\">P2<\/text><text x=\"109\" y=\"103\" font-size=\"24\">P3<\/text><text x=\"-258\" y=\"-93\" font-size=\"18\">E1<\/text><text x=\"222\" y=\"-93\" font-size=\"18\">E2<\/text><text x=\"-31\" y=\"48\" font-size=\"18\" fill=\"#f3d47c\">FO<\/text><\/g>\n <g fill=\"#61d7f0\" stroke=\"#b9e9f0\" stroke-width=\"2\"><circle cx=\"-45\" cy=\"18\" r=\"7\"\/><circle cx=\"-27\" cy=\"18\" r=\"7\"\/><circle cx=\"-9\" cy=\"18\" r=\"7\"\/><circle cx=\"9\" cy=\"18\" r=\"7\"\/><circle cx=\"27\" cy=\"18\" r=\"7\"\/><circle cx=\"45\" cy=\"18\" r=\"7\"\/><circle cx=\"63\" cy=\"18\" r=\"7\"\/><circle cx=\"-45\" cy=\"36\" r=\"7\"\/><circle cx=\"-27\" cy=\"36\" r=\"7\"\/><circle cx=\"-9\" cy=\"36\" r=\"7\"\/><circle cx=\"9\" cy=\"36\" r=\"7\"\/><circle cx=\"27\" cy=\"36\" r=\"7\"\/><circle cx=\"45\" cy=\"36\" r=\"7\"\/><circle cx=\"63\" cy=\"36\" r=\"7\"\/><circle cx=\"-45\" cy=\"54\" r=\"7\"\/><circle cx=\"-27\" cy=\"54\" r=\"7\"\/><circle cx=\"-9\" cy=\"54\" r=\"7\"\/><circle cx=\"9\" cy=\"54\" r=\"7\"\/><circle cx=\"27\" cy=\"54\" r=\"7\"\/><circle cx=\"45\" cy=\"54\" r=\"7\"\/><circle cx=\"63\" cy=\"54\" r=\"7\"\/><circle cx=\"-45\" cy=\"72\" r=\"7\"\/><circle cx=\"-27\" cy=\"72\" r=\"7\"\/><circle cx=\"-9\" cy=\"72\" r=\"7\"\/><circle cx=\"9\" cy=\"72\" r=\"7\"\/><circle cx=\"27\" cy=\"72\" r=\"7\"\/><circle cx=\"45\" cy=\"72\" r=\"7\"\/><circle cx=\"63\" cy=\"72\" r=\"7\"\/><circle cx=\"-45\" cy=\"90\" r=\"7\"\/><circle cx=\"-27\" cy=\"90\" r=\"7\"\/><circle cx=\"-9\" cy=\"90\" r=\"7\"\/><circle cx=\"9\" cy=\"90\" r=\"7\"\/><circle cx=\"27\" cy=\"90\" r=\"7\"\/><circle cx=\"45\" cy=\"90\" r=\"7\"\/><circle cx=\"63\" cy=\"90\" r=\"7\"\/><\/g>\n<\/g>\n<g font-family=\"Arial\" fill=\"#eaf6f8\">\n <line x1=\"1015\" y1=\"270\" x2=\"1390\" y2=\"172\" stroke=\"#d9edf0\" stroke-width=\"3\" marker-end=\"url(#cx-arrow)\"\/><text x=\"1415\" y=\"168\" font-size=\"24\" font-weight=\"700\" fill=\"#f08b8d\">1. Dynamic outer sheath<\/text><text x=\"1415\" y=\"201\" font-size=\"17\">Compound, thickness, colour and environmental resistance are not supplied.<\/text>\n <line x1=\"995\" y1=\"400\" x2=\"1390\" y2=\"335\" stroke=\"#d9edf0\" stroke-width=\"3\" marker-end=\"url(#cx-arrow)\"\/><text x=\"1415\" y=\"331\" font-size=\"24\" font-weight=\"700\" fill=\"#efca70\">2. Mechanical reinforcement<\/text><text x=\"1415\" y=\"364\" font-size=\"17\">Braid or equivalent support may control torsion and tensile transfer; it is not automatically armour.<\/text>\n <line x1=\"970\" y1=\"545\" x2=\"1390\" y2=\"500\" stroke=\"#d9edf0\" stroke-width=\"3\" marker-end=\"url(#cx-arrow)\"\/><text x=\"1415\" y=\"496\" font-size=\"24\" font-weight=\"700\" fill=\"#f2aaa6\">3. Inner support \/ laid-up bundle<\/text><text x=\"1415\" y=\"529\" font-size=\"17\">The final cable must protect the fibre unit from local compression and the shortest bend radius.<\/text>\n <line x1=\"930\" y1=\"690\" x2=\"1390\" y2=\"670\" stroke=\"#d9edf0\" stroke-width=\"3\" marker-end=\"url(#cx-arrow)\"\/><text x=\"1415\" y=\"666\" font-size=\"24\" font-weight=\"700\" fill=\"#b7d7bc\">4. Three 120 mm\u00b2 MV cores<\/text><text x=\"1415\" y=\"699\" font-size=\"17\">Power-core insulation and metallic screens are target-release fields.<\/text>\n <line x1=\"470\" y1=\"850\" x2=\"70\" y2=\"965\" stroke=\"#d9edf0\" stroke-width=\"3\" marker-end=\"url(#cx-arrow)\"\/><text x=\"70\" y=\"910\" font-size=\"24\" font-weight=\"700\" fill=\"#e5e58f\">5. Two 70\/2 earth sections<\/text><text x=\"70\" y=\"943\" font-size=\"17\">The notation is preserved; the exact electrical layout and termination must be confirmed.<\/text>\n <line x1=\"555\" y1=\"830\" x2=\"70\" y2=\"1125\" stroke=\"#d9edf0\" stroke-width=\"3\" marker-end=\"url(#cx-arrow)\"\/><text x=\"70\" y=\"1075\" font-size=\"24\" font-weight=\"700\" fill=\"#62dff7\">6. 18FO optical unit<\/text><text x=\"70\" y=\"1108\" font-size=\"17\">Fibre count is supplied; fibre type, buffer, attenuation, wavelength and connectors are not supplied.<\/text>\n <rect x=\"1120\" y=\"900\" width=\"670\" height=\"136\" rx=\"12\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"1150\" y=\"938\" font-size=\"18\" fill=\"#55dff7\">Data boundary:<\/text><text x=\"1150\" y=\"970\" font-size=\"17\">This drawing explains the functions implied by the procurement string.<\/text><text x=\"1150\" y=\"998\" font-size=\"17\">It does not assign a standard, material, dimension, rating or fibre grade.<\/text><text x=\"1150\" y=\"1026\" font-size=\"17\">Use the controlled Feichun drawing for manufacture.<\/text>\n <text x=\"1120\" y=\"1150\" font-size=\"19\" font-weight=\"700\" fill=\"#ffaaa5\">Not to scale \u00b7 18FO-specific dimensions remain TBC.<\/text>\n<\/g><\/svg><p class=\"svg-caption\">Figure 1 \u2014 Functional cross-section schematic. The power, earth and fibre elements are shown separately to explain the design logic; no unprovided layer dimension or material is asserted.<\/p><\/div><div class=\"scroll\"><table><thead><tr><th>Functional element<\/th><th>Engineering description<\/th><th>Required release information<\/th><th>Status<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Three MV power cores<\/td><td>Three nominal 120 mm\u00b2 cores laid up for medium-voltage reeling service.<\/td><td>Conductor material\/class, strand design, insulation, screens, temperature, resistance and test values.<\/td><td class=\"tbc\">Size supplied; construction TBC<\/td><\/tr><tr><td class=\"key\">Two earth sections<\/td><td>Two sections represented by 70\/2 notation in the buyer string.<\/td><td>Actual conductor geometry, copper area, screen\/earth relationship, resistance, fault duty and termination.<\/td><td class=\"source\">Notation supplied<\/td><\/tr><tr><td class=\"key\">18FO unit<\/td><td>An integrated optical-fibre element placed within the cable lay-up.<\/td><td>Fibre mode\/grade, buffer, tube, strength member, attenuation, bandwidth, wavelength and connector plan.<\/td><td class=\"tbc\">Count supplied; design TBC<\/td><\/tr><tr><td class=\"key\">Mechanical reinforcement<\/td><td>A reinforcement\/support system may be required to control torsion and tensile transfer.<\/td><td>Material, coverage, allowable load, end-grip method and dynamic test evidence.<\/td><td class=\"tbc\">Not supplied<\/td><\/tr><tr><td class=\"key\">Inner and outer sheath<\/td><td>Dynamic protective layers around the power, earth and fibre elements.<\/td><td>Compound, thickness, environmental resistance, marking and fire\/chemical evidence.<\/td><td class=\"tbc\">Not supplied<\/td><\/tr><\/tbody><\/table><\/div><div class=\"grid\"><div class=\"box\"><b>Electrical screen versus reinforcement<\/b><br>A metallic MV screen is an electrical field-control and fault-current element. A braid or textile reinforcement is a mechanical element. They must not be conflated.<\/div><div class=\"box\"><b>Optical unit must avoid the shortest radius<\/b><br>The fibre module should not become the most highly strained element when the cable enters the reel, guide or termination.<\/div><div class=\"box\"><b>Earth path must be continuous<\/b><br>Earth sections, screens, clamps, glands and terminations need a documented bonding plan that matches the system protection study.<\/div><div class=\"box\"><b>Dynamic sheath is an interface<\/b><br>The outer layer sees guide friction, layer pressure, oil, salt, dust, UV, water and repeated bending. Compound selection must follow the environment.<\/div><\/div><h2>5. Power, earth and fibre topology<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"1900\" height=\"930\" viewBox=\"0 0 1900 930\" role=\"img\" aria-label=\"Functional topology for the 6\/10 kV power, earth and 18 fibre reeling cable\">\n<defs><marker id=\"to-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0L12 4L0 8Z\" fill=\"#d9edf0\"\/><\/marker><\/defs>\n<rect width=\"1900\" height=\"930\" fill=\"#06131b\"\/><text x=\"60\" y=\"64\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">Power, earth and optical topology \u2014 three interfaces, one moving cable<\/text><text x=\"60\" y=\"104\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">The cable body, transition zone and machine termination must preserve each function independently.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6f8\">\n <rect x=\"70\" y=\"200\" width=\"380\" height=\"570\" rx=\"18\" fill=\"#0b222d\" stroke=\"#e36b79\" stroke-width=\"4\"\/><text x=\"130\" y=\"270\" font-size=\"26\" font-weight=\"700\" fill=\"#f08b8d\">Cable core set<\/text><circle cx=\"180\" cy=\"380\" r=\"72\" fill=\"#3b723f\" stroke=\"#dfeee2\" stroke-width=\"7\"\/><circle cx=\"180\" cy=\"380\" r=\"43\" fill=\"#bd7138\"\/><text x=\"143\" y=\"388\" font-size=\"22\" fill=\"#091820\" font-weight=\"700\">P1<\/text><circle cx=\"340\" cy=\"380\" r=\"72\" fill=\"#3b723f\" stroke=\"#dfeee2\" stroke-width=\"7\"\/><circle cx=\"340\" cy=\"380\" r=\"43\" fill=\"#bd7138\"\/><text x=\"303\" y=\"388\" font-size=\"22\" fill=\"#091820\" font-weight=\"700\">P2<\/text><circle cx=\"260\" cy=\"550\" r=\"72\" fill=\"#3b723f\" stroke=\"#dfeee2\" stroke-width=\"7\"\/><circle cx=\"260\" cy=\"550\" r=\"43\" fill=\"#bd7138\"\/><text x=\"223\" y=\"558\" font-size=\"22\" fill=\"#091820\" font-weight=\"700\">P3<\/text><circle cx=\"115\" cy=\"650\" r=\"29\" fill=\"#9d9d3c\"\/><circle cx=\"175\" cy=\"650\" r=\"29\" fill=\"#9d9d3c\"\/><text x=\"218\" y=\"658\" font-size=\"19\" fill=\"#e5e58f\">2\u00d770\/2 earth<\/text><circle cx=\"130\" cy=\"720\" r=\"7\" fill=\"#55dff7\"\/><circle cx=\"150\" cy=\"720\" r=\"7\" fill=\"#55dff7\"\/><circle cx=\"170\" cy=\"720\" r=\"7\" fill=\"#55dff7\"\/><text x=\"195\" y=\"727\" font-size=\"19\" fill=\"#62dff7\">18FO<\/text>\n <path d=\"M450 350H625\" stroke=\"#e36b79\" stroke-width=\"7\" marker-end=\"url(#to-arrow)\"\/><path d=\"M450 625H625\" stroke=\"#e5e58f\" stroke-width=\"7\" marker-end=\"url(#to-arrow)\"\/><path d=\"M450 720H625\" stroke=\"#55dff7\" stroke-width=\"7\" marker-end=\"url(#to-arrow)\"\/>\n <rect x=\"625\" y=\"200\" width=\"420\" height=\"570\" rx=\"18\" fill=\"#0b222d\" stroke=\"#f1cf70\" stroke-width=\"4\"\/><text x=\"695\" y=\"270\" font-size=\"26\" font-weight=\"700\" fill=\"#f1cf70\">Transition zone<\/text><rect x=\"705\" y=\"340\" width=\"260\" height=\"72\" rx=\"12\" fill=\"#451f2a\" stroke=\"#e36b79\" stroke-width=\"4\"\/><text x=\"748\" y=\"385\" font-size=\"20\" fill=\"#f08b8d\">MV termination<\/text><rect x=\"705\" y=\"490\" width=\"260\" height=\"72\" rx=\"12\" fill=\"#46441c\" stroke=\"#e5e58f\" stroke-width=\"4\"\/><text x=\"750\" y=\"535\" font-size=\"20\" fill=\"#e5e58f\">PE \/ screen bond<\/text><rect x=\"705\" y=\"640\" width=\"260\" height=\"72\" rx=\"12\" fill=\"#123d4a\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"754\" y=\"685\" font-size=\"20\" fill=\"#62dff7\">FO fan-out<\/text><text x=\"680\" y=\"742\" font-size=\"17\" fill=\"#ffaaa5\">Do not let the MV termination<\/text><text x=\"680\" y=\"766\" font-size=\"17\" fill=\"#ffaaa5\">become the fibre strain path.<\/text>\n <path d=\"M1045 375H1215\" stroke=\"#e36b79\" stroke-width=\"7\" marker-end=\"url(#to-arrow)\"\/><path d=\"M1045 525H1215\" stroke=\"#e5e58f\" stroke-width=\"7\" marker-end=\"url(#to-arrow)\"\/><path d=\"M1045 675H1215\" stroke=\"#55dff7\" stroke-width=\"7\" marker-end=\"url(#to-arrow)\"\/>\n <rect x=\"1215\" y=\"200\" width=\"600\" height=\"570\" rx=\"18\" fill=\"#0b222d\" stroke=\"#a6e3d4\" stroke-width=\"4\"\/><text x=\"1300\" y=\"270\" font-size=\"26\" font-weight=\"700\" fill=\"#a6e3d4\">Machine interface<\/text><rect x=\"1310\" y=\"340\" width=\"390\" height=\"72\" rx=\"12\" fill=\"#451f2a\" stroke=\"#e36b79\" stroke-width=\"4\"\/><text x=\"1435\" y=\"385\" font-size=\"20\" fill=\"#f08b8d\">MV drive \/ switchgear<\/text><rect x=\"1310\" y=\"490\" width=\"390\" height=\"72\" rx=\"12\" fill=\"#46441c\" stroke=\"#e5e58f\" stroke-width=\"4\"\/><text x=\"1430\" y=\"535\" font-size=\"20\" fill=\"#e5e58f\">Protective-earth system<\/text><rect x=\"1310\" y=\"640\" width=\"390\" height=\"72\" rx=\"12\" fill=\"#123d4a\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"1382\" y=\"685\" font-size=\"20\" fill=\"#62dff7\">PLC \/ camera \/ network<\/text><text x=\"1255\" y=\"742\" font-size=\"17\" fill=\"#adc4ce\">Confirm fibre mode, wavelength, attenuation,<\/text><text x=\"1255\" y=\"766\" font-size=\"17\" fill=\"#adc4ce\">connector, link budget and active equipment.<\/text>\n <rect x=\"70\" y=\"825\" width=\"1745\" height=\"54\" rx=\"10\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"108\" y=\"860\" font-size=\"18\" fill=\"#ffaaa5\">MV withstand, earth continuity and optical acceptance are separate evidence streams, even when they share one cable sheath.<\/text>\n<\/g><\/svg><p class=\"svg-caption\">Figure 2 \u2014 Interface topology. The MV termination, protective-earth\/screen bond and optical fan-out should be designed as separate but coordinated interfaces.<\/p><\/div><div class=\"scroll\"><table><thead><tr><th>Interface zone<\/th><th>Power-side control<\/th><th>Earth-side control<\/th><th>Fibre-side control<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Cable body<\/td><td>Conductor resistance, insulation, screen continuity, geometry and mechanical protection.<\/td><td>Continuity, resistance, fault-current path and separation from unintended tensile loads.<\/td><td>Fibre identification, continuity, attenuation, buffer integrity and bend protection.<\/td><\/tr><tr><td class=\"key\">Reel transition<\/td><td>No excessive local field stress, screen damage or conductor transfer of reel force into the termination.<\/td><td>No interruption or crushing of earth sections as the cable changes direction.<\/td><td>No tube crushing, microbend spike, fibre migration or excessive local curvature.<\/td><\/tr><tr><td class=\"key\">Machine termination<\/td><td>Correct MV accessory, screen cutback, phase identification and strain relief.<\/td><td>Correct bond, clamp, earth termination and protective coordination.<\/td><td>Correct fan-out, splice\/connector, fibre mode and enclosure sealing.<\/td><\/tr><tr><td class=\"key\">Acceptance<\/td><td>MV routine\/withstand\/insulation\/screen tests as specified by the project.<\/td><td>Earth continuity\/resistance and fault-path inspection.<\/td><td>OTDR, insertion loss, continuity\/polarity, end-face inspection and link budget.<\/td><\/tr><\/tbody><\/table><\/div><h2>6. Exact target data matrix<\/h2><p>This matrix preserves every technical field present in the supplied request and explicitly identifies missing release values. A TBC field is not a weakness in the article; it is the correct RFQ boundary for a cable whose original datasheet was not provided.<\/p><div class=\"scroll\"><table><thead><tr><th>Parameter<\/th><th>Target value \/ reading<\/th><th>Engineering use<\/th><th>Evidence<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Raw procurement description<\/td><td>6\/10KV REELING CABLE 3CX120 & 2CX70\/2+18FO<\/td><td>Keep this wording unchanged in RFQ, quotation, drawing and inspection records.<\/td><td class=\"source\">Supplied verbatim<\/td><\/tr><tr><td class=\"key\">Normalised designation<\/td><td>6\/10 kV reeling cable \u2014 3\u00d7120 + 2\u00d770\/2 + 18FO<\/td><td>Technical working notation only; the purchaser’s string remains the traceability key.<\/td><td class=\"derived\">Derived notation<\/td><\/tr><tr><td class=\"key\">Rated voltage U\u2080\/U<\/td><td>6\/10 kV<\/td><td>MV insulation coordination, accessory selection and protection study.<\/td><td class=\"source\">Supplied<\/td><\/tr><tr><td class=\"key\">Power cores<\/td><td>3\u00d7120 mm\u00b2<\/td><td>Three nominal power cores; confirm whether 120 mm\u00b2 is per core.<\/td><td class=\"source\">Supplied<\/td><\/tr><tr><td class=\"key\">Earth notation<\/td><td>2\u00d770\/2<\/td><td>Split earth arrangement; actual area and geometry require confirmation.<\/td><td class=\"tbc\">Supplied; interpretation TBC<\/td><\/tr><tr><td class=\"key\">Optical fibre count<\/td><td>18FO<\/td><td>18 fibres integrated into the reeling cable.<\/td><td class=\"source\">Supplied<\/td><\/tr><tr><td class=\"key\">Conductor material \/ class<\/td><td>Not supplied<\/td><td>Controls resistance, flexibility, corrosion interface and termination preparation.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">MV insulation \/ screen<\/td><td>Not supplied<\/td><td>Controls field grading, partial discharge, earth-fault screen duty and termination cutback.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Fibre mode \/ grade<\/td><td>Not supplied<\/td><td>Controls active equipment, attenuation, bandwidth, wavelength and link budget.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Fibre buffer \/ strength member<\/td><td>Not supplied<\/td><td>Controls microbend, tensile transfer, crush resistance and termination method.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Outer diameter \/ mass<\/td><td>Not supplied<\/td><td>Controls drum barrel, flange, guide, support, torque, transport and installation load.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Current rating \/ voltage drop<\/td><td>Not supplied<\/td><td>Must be calculated for conductor arrangement, ambient, grouping, reel layers and duty cycle.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Short-circuit rating<\/td><td>Not supplied<\/td><td>Requires conductor\/screen\/earth data and protection clearing time.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Minimum dynamic radius<\/td><td>Not supplied<\/td><td>Controls reel, guide, pulley, festoon and termination geometry.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Speed \/ acceleration \/ torsion \/ cycles<\/td><td>Not supplied<\/td><td>Defines dynamic fatigue and mechanical qualification.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Environmental limits<\/td><td>Not supplied<\/td><td>Selects sheath compound and testing for oil, water, salt, UV, ozone, dust and temperature.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><tr><td class=\"key\">Certificate scope<\/td><td>Not supplied<\/td><td>Must match the exact construction, market, plant and project application.<\/td><td class=\"tbc\">Project confirmation<\/td><\/tr><\/tbody><\/table><\/div><h2>7. Electrical design boundary<\/h2><div class=\"grid\"><div class=\"box\"><b>Current is installation-specific<\/b><br>Do not copy a fixed-installation ampacity into a layered reel. Cable mass, adjacent turns, reel material, ambient air, duty cycle and dwell time may change the thermal result.<\/div><div class=\"box\"><b>Voltage drop needs the actual loop<\/b><br>Use released conductor resistance at operating temperature, actual route length, power factor, frequency and terminal arrangement.<\/div><div class=\"box\"><b>Short-circuit design needs all paths<\/b><br>Conductor, MV screen and earth arrangement must be evaluated with the protection clearing time and accessory limits.<\/div><div class=\"box\"><b>Screen and earth are separate questions<\/b><br>Confirm whether the earth sections are also used for screen bonding, or whether a separate metallic screen exists.<\/div><\/div><div class=\"formula\">Thermal screening: I<sub>allow<\/sub> = f(R<sub>20<\/sub>, \u03b8<sub>amb<\/sub>, conductor temperature, grouping, reel-layer build-up, air movement, duty cycle)\nVoltage drop: \u0394U = I \u00d7 L \u00d7 (R(T) cos\u03c6 + X sin\u03c6) \u2014 use released AC data and actual formation\nShort circuit: I\u00b2t \u2264 k\u00b2S\u00b2 \u2014 use released material, temperature limits and clearing time\nDynamic screening: R<sub>machine<\/sub> \u2265 R<sub>manufacturer<\/sub>; do not replace the released flat\/reeling limit with a generic radius<\/div><div class=\"warn\"><b>Useful engineering result:<\/b> the article can explain the calculation method, but it cannot responsibly publish a current rating for the exact 3\u00d7120 + 2\u00d770\/2 + 18FO cable without the installation and reel conditions.<\/div><h2>8. Optical-fibre engineering<\/h2><div class=\"scroll\"><table><thead><tr><th>Optical parameter<\/th><th>Why it matters<\/th><th>Required RFQ answer<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Fibre mode \/ grade<\/td><td>Determines source, receiver, wavelength, attenuation, bandwidth and link budget.<\/td><td>Singlemode or multimode; exact fibre designation and operating wavelengths.<\/td><\/tr><tr><td class=\"key\">Buffer \/ tube architecture<\/td><td>Controls microbend protection, crush resistance, water behaviour and fan-out method.<\/td><td>Tight buffer, loose tube, bundle or other construction; material and dimensions.<\/td><\/tr><tr><td class=\"key\">Strength member<\/td><td>Controls tensile transfer and prevents power-core movement from loading the glass.<\/td><td>Material, allowable load, location and termination method.<\/td><\/tr><tr><td class=\"key\">Bend limits<\/td><td>Fibre may fail optically before the power cable shows visible damage.<\/td><td>Static and dynamic bend radius, reverse-bend\/torsion limits and cycle test.<\/td><\/tr><tr><td class=\"key\">Optical acceptance<\/td><td>Confirms link quality after manufacturing and installation.<\/td><td>Continuity, polarity, OTDR, insertion loss, return loss where applicable and end-face inspection.<\/td><\/tr><\/tbody><\/table><\/div><div class=\"note\"><b>Fibre count is not fibre performance.<\/b> \u201c18FO\u201d establishes the count in the procurement wording. It does not establish mode, grade, attenuation, bandwidth, wavelength, connector type or link length. Those fields must be released before an optical-equivalent cable is quoted.<\/div><h2>9. Reeling mechanics<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"1900\" height=\"1080\" viewBox=\"0 0 1900 1080\" role=\"img\" aria-label=\"Motorised reel mechanics for the 6\/10 kV 3 by 120 plus 2 by 70 slash 2 plus 18 fibre cable\">\n<defs><linearGradient id=\"rm-metal\" x1=\"0\" x2=\"1\"><stop stop-color=\"#45222d\"\/><stop offset=\".5\" stop-color=\"#b88387\"\/><stop offset=\"1\" stop-color=\"#3d1c27\"\/><\/linearGradient><marker id=\"rm-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0L12 4L0 8Z\" fill=\"#d9edf0\"\/><\/marker><marker id=\"rm-load\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0L12 4L0 8Z\" fill=\"#ff9297\"\/><\/marker><\/defs>\n<rect width=\"1900\" height=\"1080\" fill=\"#06131b\"\/><text x=\"60\" y=\"65\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">6\/10 kV reeling mechanics \u2014 release the cable and reel as one system<\/text><text x=\"60\" y=\"105\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">No speed, radius, tension, acceleration or cycle-life values are assigned because none are present in the supplied target description.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6f8\">\n <rect x=\"70\" y=\"245\" width=\"360\" height=\"590\" rx=\"18\" fill=\"#0b222d\" stroke=\"#e36b79\" stroke-width=\"4\"\/><circle cx=\"250\" cy=\"535\" r=\"190\" fill=\"url(#rm-metal)\" stroke=\"#f0c2c1\" stroke-width=\"11\"\/><circle cx=\"250\" cy=\"535\" r=\"60\" fill=\"#091b24\" stroke=\"#efca70\" stroke-width=\"12\"\/><circle cx=\"250\" cy=\"535\" r=\"128\" fill=\"none\" stroke=\"#efca70\" stroke-width=\"18\" stroke-dasharray=\"24 16\"\/><path d=\"M250 345V725M60 535H440\" stroke=\"#e4b4b6\" stroke-width=\"8\" opacity=\".7\"\/><text x=\"132\" y=\"320\" font-size=\"25\" font-weight=\"700\" fill=\"#f08b8d\">Motorised reel<\/text><text x=\"100\" y=\"770\" font-size=\"18\">layer build-up and cable mass<\/text><text x=\"91\" y=\"802\" font-size=\"18\">must match the machine drawing<\/text>\n <path d=\"M440 535C570 535 595 310 765 310S1000 535 1110 535\" fill=\"none\" stroke=\"#110d12\" stroke-width=\"92\"\/><path d=\"M440 535C570 535 595 310 765 310S1000 535 1110 535\" fill=\"none\" stroke=\"#8f4854\" stroke-width=\"62\"\/><path d=\"M440 535C570 535 595 310 765 310S1000 535 1110 535\" fill=\"none\" stroke=\"#efa8a9\" stroke-width=\"6\"\/><path d=\"M565 535A220 220 0 0 1 765 330\" fill=\"none\" stroke=\"#ffaaa5\" stroke-width=\"4\" stroke-dasharray=\"13 10\"\/><text x=\"510\" y=\"750\" font-size=\"22\" fill=\"#ffaaa5\">Rmin = k \u00d7 D<\/text><text x=\"510\" y=\"782\" font-size=\"17\">D and k must come from the controlled cable drawing<\/text><path d=\"M450 185H1030\" stroke=\"#d9edf0\" stroke-width=\"4\" marker-end=\"url(#rm-arrow)\"\/><text x=\"630\" y=\"157\" font-size=\"21\" fill=\"#d9edf0\">reel travel direction<\/text>\n <rect x=\"1140\" y=\"245\" width=\"330\" height=\"590\" rx=\"18\" fill=\"#0b222d\" stroke=\"#efca70\" stroke-width=\"4\"\/><text x=\"1200\" y=\"315\" font-size=\"25\" font-weight=\"700\" fill=\"#efca70\">Release gates<\/text><text x=\"1180\" y=\"380\" font-size=\"19\">voltage: 6\/10 kV<\/text><text x=\"1180\" y=\"420\" font-size=\"19\">current: TBC<\/text><text x=\"1180\" y=\"460\" font-size=\"19\">speed: TBC<\/text><text x=\"1180\" y=\"500\" font-size=\"19\">radius: TBC<\/text><text x=\"1180\" y=\"540\" font-size=\"19\">torsion: TBC<\/text><text x=\"1180\" y=\"580\" font-size=\"19\">pulling load: TBC<\/text><text x=\"1180\" y=\"620\" font-size=\"19\">acceleration: TBC<\/text><text x=\"1180\" y=\"680\" font-size=\"17\" fill=\"#ffaaa5\">A comparator row is not<\/text><text x=\"1180\" y=\"706\" font-size=\"17\" fill=\"#ffaaa5\">permission to substitute<\/text><text x=\"1180\" y=\"732\" font-size=\"17\" fill=\"#ffaaa5\">values into this target.<\/text>\n <rect x=\"1520\" y=\"245\" width=\"300\" height=\"590\" rx=\"18\" fill=\"#0b222d\" stroke=\"#ff777f\" stroke-width=\"4\"\/><text x=\"1582\" y=\"315\" font-size=\"25\" font-weight=\"700\" fill=\"#ff9297\">Load path<\/text><path d=\"M1670 385V560\" stroke=\"#ff9297\" stroke-width=\"8\" marker-end=\"url(#rm-load)\"\/><path d=\"M1670 560V385\" stroke=\"#ff9297\" stroke-width=\"8\" marker-end=\"url(#rm-load)\"\/><text x=\"1550\" y=\"640\" font-size=\"17\">mass + acceleration<\/text><text x=\"1550\" y=\"675\" font-size=\"17\">friction + slope<\/text><text x=\"1550\" y=\"710\" font-size=\"17\">sheath \/ braid stress<\/text><text x=\"1550\" y=\"745\" font-size=\"17\">fibre protection<\/text>\n <rect x=\"72\" y=\"925\" width=\"1748\" height=\"70\" rx=\"10\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"108\" y=\"967\" font-size=\"18\" fill=\"#ffaaa5\">A cable that fits the drum can still be mechanically wrong. Verify barrel diameter, fleet angle, layer pressure, guide rollers, acceleration, tension, torsion and termination restraint.<\/text>\n<\/g><\/svg><p class=\"svg-caption\">Figure 3 \u2014 Reel mechanics. The exact diameter, radius, speed, acceleration, torsion and cycle-life values remain TBC because they are absent from the target description.<\/p><\/div><div class=\"scroll\"><table><thead><tr><th>Mechanical input<\/th><th>Failure mechanism if ignored<\/th><th>RFQ question<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Drum barrel \/ flange<\/td><td>Layer build-up changes radius, pressure, torque and thermal dissipation.<\/td><td>Provide barrel diameter, flange diameter, cable length, layer count and winding direction.<\/td><\/tr><tr><td class=\"key\">Fleet angle \/ guide<\/td><td>Misalignment can fold the cable, load one edge or damage the fibre unit.<\/td><td>Provide guide width, radius, spacing, offset, edge protection and alignment tolerance.<\/td><\/tr><tr><td class=\"key\">Speed \/ acceleration<\/td><td>Dynamic tension increases at starts, stops, reversals and emergency braking.<\/td><td>State maximum speed, acceleration, braking, travel and cycle frequency.<\/td><\/tr><tr><td class=\"key\">Torsion<\/td><td>Twist can transfer into the optical unit and create local power-core or sheath stress.<\/td><td>State allowable torsion and how the machine prevents twist accumulation.<\/td><\/tr><tr><td class=\"key\">End restraint<\/td><td>Cable weight and acceleration can be transferred through copper, earth or fibre instead of a designed grip.<\/td><td>Provide clamp length, support method, bend exit and termination-entry geometry.<\/td><\/tr><tr><td class=\"key\">Environment<\/td><td>Oil, water, salt, dust, UV, ozone and temperature affect friction and material life.<\/td><td>Provide chemical list, ambient range, exposure and cleaning process.<\/td><\/tr><\/tbody><\/table><\/div><h2>10. Application scenes<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"1900\" height=\"1000\" viewBox=\"0 0 1900 1000\" role=\"img\" aria-label=\"Application scenes for a 6\/10 kV power and fibre optic reeling cable\">\n<defs><linearGradient id=\"ap-sky\" x1=\"0\" x2=\"0\" y1=\"0\" y2=\"1\"><stop stop-color=\"#164153\"\/><stop offset=\"1\" stop-color=\"#06131b\"\/><\/linearGradient><marker id=\"ap-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0L12 4L0 8Z\" fill=\"#dcecef\"\/><\/marker><\/defs>\n<rect width=\"1900\" height=\"1000\" fill=\"url(#ap-sky)\"\/><rect y=\"700\" width=\"1900\" height=\"300\" fill=\"#0b2028\"\/><path d=\"M0 700H1900\" stroke=\"#6f9599\" stroke-width=\"4\"\/><text x=\"60\" y=\"65\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">Where combined MV power and fibre reeling cables are evaluated<\/text><text x=\"60\" y=\"105\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">The scenes are application categories, not a claim that every construction fits every machine.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6f8\">\n <g transform=\"translate(65 205)\"><rect width=\"390\" height=\"370\" rx=\"16\" fill=\"#0b222d\" stroke=\"#55dff7\" stroke-width=\"4\"\/><path d=\"M44 100H340V145H44ZM80 145V280M304 145V280M78 280H306\" fill=\"none\" stroke=\"#b9d5d4\" stroke-width=\"10\"\/><rect x=\"145\" y=\"295\" width=\"100\" height=\"54\" fill=\"#29454d\" stroke=\"#e4c779\" stroke-width=\"6\"\/><path d=\"M195 349V380\" stroke=\"#55dff7\" stroke-width=\"13\"\/><path d=\"M245 298C275 268 290 225 325 210\" fill=\"none\" stroke=\"#d7a43a\" stroke-width=\"12\"\/><text x=\"98\" y=\"317\" font-size=\"24\" font-weight=\"700\" fill=\"#55dff7\">Ship-to-shore crane<\/text><text x=\"63\" y=\"351\" font-size=\"17\">MV drive + networked equipment<\/text><\/g>\n <g transform=\"translate(505 205)\"><rect width=\"390\" height=\"370\" rx=\"16\" fill=\"#0b222d\" stroke=\"#f0c865\" stroke-width=\"4\"\/><path d=\"M64 255H315L279 188H112Z\" fill=\"#263f47\" stroke=\"#b9d5d4\" stroke-width=\"7\"\/><circle cx=\"114\" cy=\"277\" r=\"30\" fill=\"#0a1d24\" stroke=\"#e4c779\" stroke-width=\"8\"\/><circle cx=\"273\" cy=\"277\" r=\"30\" fill=\"#0a1d24\" stroke=\"#e4c779\" stroke-width=\"8\"\/><rect x=\"150\" y=\"140\" width=\"100\" height=\"58\" fill=\"#36555b\" stroke=\"#55dff7\" stroke-width=\"6\"\/><path d=\"M200 140V100\" stroke=\"#55dff7\" stroke-width=\"10\"\/><path d=\"M65 160C120 125 300 130 332 95\" fill=\"none\" stroke=\"#d7a43a\" stroke-width=\"12\"\/><text x=\"112\" y=\"317\" font-size=\"24\" font-weight=\"700\" fill=\"#f0c865\">Ship unloader<\/text><text x=\"76\" y=\"351\" font-size=\"17\">power, earth and fibre link<\/text><\/g>\n <g transform=\"translate(945 205)\"><rect width=\"390\" height=\"370\" rx=\"16\" fill=\"#0b222d\" stroke=\"#ff9297\" stroke-width=\"4\"\/><path d=\"M38 220H350\" stroke=\"#b9d5d4\" stroke-width=\"12\"\/><circle cx=\"95\" cy=\"220\" r=\"30\" fill=\"#0a1d24\" stroke=\"#e4c779\" stroke-width=\"8\"\/><circle cx=\"285\" cy=\"220\" r=\"30\" fill=\"#0a1d24\" stroke=\"#e4c779\" stroke-width=\"8\"\/><rect x=\"80\" y=\"154\" width=\"240\" height=\"42\" rx=\"10\" fill=\"#36555b\" stroke=\"#a6e3d4\" stroke-width=\"6\"\/><path d=\"M64 175C125 125 270 125 328 175\" fill=\"none\" stroke=\"#d7a43a\" stroke-width=\"12\"\/><path d=\"M120 155V97M195 155V92M270 155V97\" stroke=\"#e4c779\" stroke-width=\"10\"\/><text x=\"123\" y=\"317\" font-size=\"24\" font-weight=\"700\" fill=\"#ff9297\">Stacker \/ conveyor<\/text><text x=\"66\" y=\"351\" font-size=\"17\">moving transfer equipment<\/text><\/g>\n <g transform=\"translate(1385 205)\"><rect width=\"390\" height=\"370\" rx=\"16\" fill=\"#0b222d\" stroke=\"#a6ded9\" stroke-width=\"4\"\/><circle cx=\"195\" cy=\"170\" r=\"104\" fill=\"none\" stroke=\"#b9d5d4\" stroke-width=\"16\"\/><circle cx=\"195\" cy=\"170\" r=\"35\" fill=\"#091d25\" stroke=\"#e4c779\" stroke-width=\"9\"\/><circle cx=\"195\" cy=\"170\" r=\"70\" fill=\"none\" stroke=\"#e4c779\" stroke-width=\"14\" stroke-dasharray=\"23 16\"\/><path d=\"M195 70V270M95 170H295\" stroke=\"#b9d5d4\" stroke-width=\"7\"\/><path d=\"M292 275C320 300 332 320 365 330\" fill=\"none\" stroke=\"#d7a43a\" stroke-width=\"14\"\/><text x=\"126\" y=\"317\" font-size=\"24\" font-weight=\"700\" fill=\"#a6ded9\">Motorised reel<\/text><text x=\"80\" y=\"351\" font-size=\"17\">controlled payout \/ take-up<\/text><\/g>\n <path d=\"M460 390H495M900 390H935M1340 390H1375\" stroke=\"#dcecef\" stroke-width=\"5\" marker-end=\"url(#ap-arrow)\"\/>\n <rect x=\"80\" y=\"795\" width=\"1740\" height=\"90\" rx=\"10\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"115\" y=\"833\" font-size=\"18\" fill=\"#ffaaa5\">Application boundary: the provided string identifies a 6\/10 kV combined reeling cable. It does not by itself certify a shipboard, mining, hazardous-area, VFD or fibre-network installation.<\/text><text x=\"115\" y=\"866\" font-size=\"17\" fill=\"#adc4ce\">Confirm voltage system, current, fibre link, travel, radius, environment, EMC and certificates before release.<\/text>\n<\/g><\/svg><p class=\"svg-caption\">Figure 4 \u2014 Typical port and heavy-equipment contexts in which the combined electrical, optical and mechanical duty should be evaluated.<\/p><\/div><div class=\"grid\"><div class=\"box\"><b>Ship-to-shore crane<\/b><br>Review MV drive supply, network\/camera links, salt mist, festoon or reel geometry, EMC, wash-down and spreader interfaces.<\/div><div class=\"box\"><b>Ship unloader<\/b><br>Check long travel, repeated acceleration, guide rollers, dust, impact, earth-fault path and fibre link continuity across the moving machine.<\/div><div class=\"box\"><b>Stacker \/ conveyor<\/b><br>Check travel direction, reversals, slope, abrasion, dust, crushing, layer pressure and optical performance under motion.<\/div><div class=\"box\"><b>Motorised reel<\/b><br>Match cable mass, winding torque, layer build-up, brake behaviour, fleet angle, spare turns and end support to the reel drawing.<\/div><\/div><h2>11. Installation and failure-mode controls<\/h2><div class=\"scroll\"><table><thead><tr><th>Observed problem<\/th><th>Likely mechanism<\/th><th>Preventive control<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">MV insulation failure<\/td><td>Radius below limit, screen damage, moisture ingress, termination stress or uncontrolled bending during handling.<\/td><td>Use the released handling radius, protect the screen, seal ends and follow the MV termination method.<\/td><\/tr><tr><td class=\"key\">Earth continuity loss<\/td><td>Broken earth section, bad bond, crushed conductor or termination looseness.<\/td><td>Test continuity\/resistance before and after installation and inspect the full bond path.<\/td><\/tr><tr><td class=\"key\">Optical attenuation increase<\/td><td>Microbend, tight fan-out, crush, torsion, excessive radius or damaged buffer.<\/td><td>Perform OTDR and insertion-loss tests in the installed state and control the transition geometry.<\/td><\/tr><tr><td class=\"key\">Outer sheath damage<\/td><td>Sharp guide, edge loading, abrasion, chemical incompatibility or layer crossover.<\/td><td>Align guides, control winding, inspect contact surfaces and confirm compound compatibility.<\/td><\/tr><tr><td class=\"key\">Cable roll \/ twist lock<\/td><td>Off-axis entry, unequal layers, reverse torsion or uncontrolled payout.<\/td><td>Control winding direction, fleet angle, guide alignment and transition support.<\/td><\/tr><tr><td class=\"key\">Overtemperature<\/td><td>Ampacity copied from fixed installation or reel-layer heat trapped at full load.<\/td><td>Run the installed thermal calculation and record current and temperature during commissioning.<\/td><\/tr><tr><td class=\"key\">Termination pull-out<\/td><td>Mass and acceleration transferred through conductors, earth sections or optical fibres.<\/td><td>Use a designed clamp\/grip and keep the cable bend exit within the controlled geometry.<\/td><\/tr><\/tbody><\/table><\/div><div class=\"note\"><b>Commissioning sequence:<\/b> inspect the stationary route first; verify the cable is not twisted, pinched or edge-loaded; travel slowly through the complete stroke; test MV\/earth\/optical functions separately; then increase speed and load in controlled stages while recording temperature, current, optical loss and abnormal noise.<\/div><h2>12. Feichun functional equivalent<\/h2><div class=\"note\"><b>Feichun Cable can engineer a functional equivalent<\/b> for the confirmed 6\/10 kV, 3\u00d7120 + 2\u00d770\/2 + 18FO duty. The equivalent should be produced from an independent construction drawing and controlled material\/test plan, matching the required electrical, optical and mechanical interfaces without copying a third party\u2019s proprietary drawing, protected marking or undocumented design detail.<\/div><div class=\"scroll\"><table><thead><tr><th>Design gate<\/th><th>Feichun deliverable<\/th><th>Purchaser benefit<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Duty capture<\/td><td>RFQ sheet covering current, system earthing, travel, speed, acceleration, radius, torsion, cycles, environment and optical link.<\/td><td>Prevents a size-only quotation from being used on the wrong machine.<\/td><\/tr><tr><td class=\"key\">Construction selection<\/td><td>Conductor, MV insulation\/screen, earth layout, fibre unit, reinforcement and sheath design.<\/td><td>Creates a controlled power-plus-data interface.<\/td><\/tr><tr><td class=\"key\">Engineering release<\/td><td>Cross-section drawing, OD, mass, current tables, radius, tensile\/support method, fibre data and marking plan.<\/td><td>Lets the reel, installer and purchaser work from the same numbers.<\/td><\/tr><tr><td class=\"key\">Verification<\/td><td>Electrical routine tests, optical acceptance tests, environmental evidence and agreed dynamic qualification.<\/td><td>Separates product evidence from general marketing language.<\/td><\/tr><tr><td class=\"key\">Traceability<\/td><td>Batch records, dimensional checks, conductor\/screen results, optical test reports and final dossier.<\/td><td>Supports export inspection and future maintenance.<\/td><\/tr><\/tbody><\/table><\/div><h2>13. Certification and documentation<\/h2><div class=\"note\"><b>Feichun Cable supports certification-oriented export projects.<\/b> Depending on the ordered construction and target market, the documentation package can be coordinated around ATEX, IECEx, VDE, CE, UKCA, EAC and the Russian Fire Safety Certificate requirements. The exact certificate, scope and marking must be confirmed for the ordered power-plus-fibre construction; a certification name is not a product-specific certificate.<\/div><div class=\"scroll\"><table><thead><tr><th>Document \/ mark<\/th><th>Question to resolve<\/th><th>Release rule<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">ATEX \/ IECEx<\/td><td>Is the cable used within a classified explosive atmosphere or supplied as part of certified equipment?<\/td><td>Confirm zone, group, temperature class, equipment boundary and certificate scope.<\/td><\/tr><tr><td class=\"key\">VDE \/ CE<\/td><td>Which product standard, technical file or declaration applies to the ordered construction and market?<\/td><td>Match the declaration to the exact product, factory and applicable requirements.<\/td><\/tr><tr><td class=\"key\">UKCA \/ EAC<\/td><td>Which current market-conformity route and technical regulation apply?<\/td><td>Confirm the market documentation and importer\/project requirements before shipment.<\/td><\/tr><tr><td class=\"key\">Russian Fire Safety Certificate<\/td><td>Does the tender or installation require a Russian fire-safety document for this cable?<\/td><td>Confirm exact scope, validity, language and product construction.<\/td><\/tr><tr><td class=\"key\">Factory dossier<\/td><td>Can the purchaser audit electrical, optical, dimensional, mechanical and batch evidence?<\/td><td>Provide the agreed inspection and test dossier with the shipment.<\/td><\/tr><\/tbody><\/table><\/div><h2>14. RFQ release checklist<\/h2><div class=\"svg\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"1900\" height=\"900\" viewBox=\"0 0 1900 900\" role=\"img\" aria-label=\"RFQ flow for a 6\/10 kV three by 120 plus two by 70 slash 2 plus 18 fibre reeling cable\">\n<defs><marker id=\"rf-arrow\" markerWidth=\"12\" markerHeight=\"12\" refX=\"10\" refY=\"4\" orient=\"auto\"><path d=\"M0 0L12 4L0 8Z\" fill=\"#dcecef\"\/><\/marker><\/defs><rect width=\"1900\" height=\"900\" fill=\"#06131b\"\/><text x=\"60\" y=\"65\" fill=\"#55dff7\" font-family=\"Arial\" font-size=\"36\" font-weight=\"700\">RFQ release flow \u2014 make the power, earth and fibre duty explicit<\/text><text x=\"60\" y=\"105\" fill=\"#adc4ce\" font-family=\"Arial\" font-size=\"18\">The buyer string starts the quotation. The machine duty and evidence package finish it.<\/text>\n<g font-family=\"Arial\" fill=\"#eaf6f8\">\n <rect x=\"65\" y=\"210\" width=\"300\" height=\"300\" rx=\"15\" fill=\"#0b222d\" stroke=\"#55dff7\" stroke-width=\"4\"\/><text x=\"108\" y=\"270\" font-size=\"24\" font-weight=\"700\" fill=\"#55dff7\">1. Preserve identity<\/text><text x=\"108\" y=\"320\" font-size=\"18\">6\/10KV REELING CABLE<\/text><text x=\"108\" y=\"352\" font-size=\"18\">3CX120 &<\/text><text x=\"108\" y=\"384\" font-size=\"18\">2CX70\/2+18FO<\/text><text x=\"108\" y=\"442\" font-size=\"17\">keep the raw buyer string<\/text>\n <rect x=\"475\" y=\"210\" width=\"300\" height=\"300\" rx=\"15\" fill=\"#0b222d\" stroke=\"#f0c865\" stroke-width=\"4\"\/><text x=\"518\" y=\"270\" font-size=\"24\" font-weight=\"700\" fill=\"#f0c865\">2. Lock construction<\/text><text x=\"518\" y=\"320\" font-size=\"18\">MV screen \/ insulation<\/text><text x=\"518\" y=\"352\" font-size=\"18\">earth layout<\/text><text x=\"518\" y=\"384\" font-size=\"18\">18FO type and buffer<\/text><text x=\"518\" y=\"442\" font-size=\"17\">OD \u00b7 mass \u00b7 tests \u00b7 marking<\/text>\n <rect x=\"885\" y=\"210\" width=\"300\" height=\"300\" rx=\"15\" fill=\"#0b222d\" stroke=\"#a6ded9\" stroke-width=\"4\"\/><text x=\"928\" y=\"270\" font-size=\"24\" font-weight=\"700\" fill=\"#a6ded9\">3. Release motion<\/text><text x=\"928\" y=\"320\" font-size=\"18\">reel drawing<\/text><text x=\"928\" y=\"352\" font-size=\"18\">speed \/ acceleration<\/text><text x=\"928\" y=\"384\" font-size=\"18\">radius \/ torsion<\/text><text x=\"928\" y=\"416\" font-size=\"18\">guides \/ end restraint<\/text><text x=\"928\" y=\"458\" font-size=\"17\">ambient and chemicals<\/text>\n <rect x=\"1295\" y=\"210\" width=\"300\" height=\"300\" rx=\"15\" fill=\"#0b222d\" stroke=\"#ff9297\" stroke-width=\"4\"\/><text x=\"1338\" y=\"270\" font-size=\"24\" font-weight=\"700\" fill=\"#ff9297\">4. Qualify evidence<\/text><text x=\"1338\" y=\"320\" font-size=\"18\">MV routine tests<\/text><text x=\"1338\" y=\"352\" font-size=\"18\">optical acceptance<\/text><text x=\"1338\" y=\"384\" font-size=\"18\">dynamic test<\/text><text x=\"1338\" y=\"416\" font-size=\"18\">certification scope<\/text><text x=\"1338\" y=\"458\" font-size=\"17\">batch traceability<\/text>\n <path d=\"M370 360H465M780 360H875M1190 360H1285\" stroke=\"#dcecef\" stroke-width=\"5\" marker-end=\"url(#rf-arrow)\"\/>\n <rect x=\"65\" y=\"630\" width=\"1530\" height=\"90\" rx=\"12\" fill=\"#081b24\" stroke=\"#315b6f\" stroke-width=\"2\"\/><text x=\"100\" y=\"670\" font-size=\"19\" fill=\"#ffaaa5\">Final quotation rule:<\/text><text x=\"335\" y=\"670\" font-size=\"19\">do not publish a guessed OD, weight, current, radius, optical grade or fibre link budget;<\/text><text x=\"100\" y=\"704\" font-size=\"18\">release each value only after the exact power-plus-fibre construction and machine duty are confirmed.<\/text>\n <text x=\"65\" y=\"805\" font-size=\"18\" fill=\"#adc4ce\">Feichun can engineer an independent functional equivalent when the RFQ contains the complete electrical, optical and mechanical duty.<\/text>\n<\/g><\/svg><p class=\"svg-caption\">Figure 5 \u2014 RFQ release sequence for an independent Feichun equivalent.<\/p><\/div><div class=\"scroll\"><table><thead><tr><th>RFQ field<\/th><th>Minimum answer required<\/th><th>Reason<\/th><\/tr><\/thead><tbody><tr><td class=\"key\">Cable identity<\/td><td>6\/10KV REELING CABLE 3CX120 & 2CX70\/2+18FO<\/td><td>Preserves procurement traceability and prevents confusion with another 6\/10 kV reeling configuration.<\/td><\/tr><tr><td class=\"key\">Power arrangement<\/td><td>3\u00d7120 mm\u00b2 confirmation, phase\/core identification, conductor material\/class and load profile.<\/td><td>Controls MV electrical and thermal design.<\/td><\/tr><tr><td class=\"key\">Earth arrangement<\/td><td>Meaning of 2\u00d770\/2, actual copper area, screen relationship, fault current and termination.<\/td><td>Controls protective continuity and accessory design.<\/td><\/tr><tr><td class=\"key\">Optical arrangement<\/td><td>18 fibres, mode\/grade, buffer, wavelength, attenuation, bandwidth, connectors, link length and acceptance test.<\/td><td>Controls the actual communications function.<\/td><\/tr><tr><td class=\"key\">Motion duty<\/td><td>Reel\/festoon geometry, travel, speed, acceleration, cycles, torsion, minimum available radius and guides.<\/td><td>Enables dynamic qualification.<\/td><\/tr><tr><td class=\"key\">Environment<\/td><td>Ambient range, oil, water, salt, dust, UV, ozone, chemicals, impact and cleaning.<\/td><td>Selects sheath and material evidence.<\/td><\/tr><tr><td class=\"key\">Documents<\/td><td>Required standards, fire class, certificate scope, inspection plan and document language.<\/td><td>Defines the deliverable before production.<\/td><\/tr><\/tbody><\/table><\/div><div class=\"grid\"><div class=\"box\"><b>Recommended RFQ sentence<\/b><br><code>Quote a Feichun independent functional equivalent to 6\/10KV REELING CABLE 3CX120 & 2CX70\/2+18FO; confirm the MV construction, earth layout, 18FO optical data, OD, mass, current, radius, tensile\/support method, dynamic tests and certification scope for the stated machine.<\/code><\/div><div class=\"box\"><b>Do not leave the fibre line empty<\/b><br>\u201c18FO\u201d is a count, not a complete optical specification. The fibre mode, grade, attenuation, buffer, connector and link budget must be released before final quotation.<\/div><\/div><h2>15. Engineering summary<\/h2><div class=\"note\"><b>Recommended technical reading:<\/b> this is a 6\/10 kV combined reeling cable with three nominal 120 mm\u00b2 power cores, a 2\u00d770\/2 earth notation and 18 integrated optical fibres. The configuration is technically meaningful for heavy moving equipment, but its safe equivalence depends on the unreleased construction and machine duty. Feichun should quote from an independent drawing, confirm the electrical\/optical\/mechanical data and attach product-specific test and certification documentation.<\/div><div class=\"contact\"><div><b>Feichun Cable technical contact<\/b><br><a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a><br><span class=\"small\">Technical RFQ, drawings, standards and certification scope<\/span><\/div><div><b>Feichun Cable phone<\/b><br><a href=\"tel:+8613855123218\">+86 13855123218<\/a><br><span class=\"small\">Cable engineering and export project coordination<\/span><\/div><\/div><h2>Source audit and publication note<\/h2><ul class=\"source-list\"><li><a href=\"https:\/\/www.52wmb.com\/buyer\/83602415\" target=\"_blank\" rel=\"nofollow noopener\">public trade-record search trace<\/a>: public procurement search trace for a longer related description containing the same 6\/10 kV, 3\u00d7120, 2\u00d770\/2 and 18FO configuration. It is not used as a datasheet or rating source.<\/li><li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/71892\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60502-2<\/a>: medium-voltage cable standard context; product compliance is not claimed from the link alone.<\/li><li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/67229\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60794-3<\/a>: optical-fibre cable reference context; the integrated dynamic cable still requires project-specific testing.<\/li><li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/71891\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60228<\/a>: conductor area, resistance and conductor-class reference context.<\/li><\/ul><p class=\"small\">Prepared for Feichun Cable on 05 August 2026. The raw procurement description is preserved. Missing values remain project-confirmation fields. No external contact details are reproduced.<\/p><\/main><footer><div class=\"wrap\"><b>Feichun Cable \u2014 6\/10 kV 3\u00d7120 + 2\u00d770\/2 + 18FO reeling-cable engineering guide<\/b><br><span class=\"small\">Technical article generated from a controlled Python source.<\/span><\/div><\/footer><\/body><\/html>\n","protected":false},"excerpt":{"rendered":"The supplied procurement description identifies a composite reeling cable with a 6\/10 kV rating, three nominal 120 mm\u00b2 power cores, a 2CX70\/2 earth-conductor notation and an integrated 18FO optical-fibre count. The working engineering notation is 6\/10 kV reeling cable \u2014 3\u00d7120 + 2\u00d770\/2 + 18FO. This article preserves the buyer string exactly, explains the design questions it creates and keeps all unprovided construction, dimension, rating, fibre and certification values as project-confirmation fields.","protected":false},"author":1,"featured_media":25428,"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":[66,1,56],"tags":[16,111,17],"class_list":["post-25427","post","type-post","status-publish","format-standard","has-post-thumbnail","category-common-problems-encountered-in-cable-applications","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\/25427","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=25427"}],"version-history":[{"count":2,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25427\/revisions"}],"predecessor-version":[{"id":25433,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/25427\/revisions\/25433"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/25428"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=25427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=25427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=25427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":25427,"date":"2026-08-05T15:34:14","date_gmt":"2026-08-05T07:34:14","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=25427"},"modified":"2026-08-05T15:34:19","modified_gmt":"2026-08-05T07:34:19","slug":"6-10kv-reeling-cable-3cx120-2cx70-218fo-integrated-medium-voltage-power-earth-and-optical-fibre-reeling-cable","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/6-10kv-reeling-cable-3cx120-2cx70-218fo-integrated-medium-voltage-power-earth-and-optical-fibre-reeling-cable\/","title":{"rendered":"6\/10KV REELING CABLE 3CX120 & 2CX70\/2+18FO \u2014 integrated medium-voltage power, earth and optical-fibre reeling cable"},"content":{"rendered":"\n