{"id":9995,"date":"2026-04-03T10:38:13","date_gmt":"2026-04-03T02:38:13","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=9995"},"modified":"2026-04-03T10:38:16","modified_gmt":"2026-04-03T02:38:16","slug":"prysmian-cordaflex-smrt-nshtoeu","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/prysmian-cordaflex-smrt-nshtoeu\/","title":{"rendered":"PRYSMIAN Cordaflex\u00ae\u00a0SMRT (N)SHTOEU"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">0.6\/1 kV Premium Reeling Cable \u2014 25 N\/mm\u00b2 Highest Conductor Tensile, EPR Inner Sheath for Maximum Core Protection, 5GM5 Neoprene Outer, Fzd\/Fzp = 1.25\u00d7 Engineered Dynamic Ratio, 9 Pure-Power + 22 Fiber Optic Configurations from 3\u00d735 to 3\u00d7300 (620 A \/ 22,500 N Dynamic), Dual-Speed 160 m\/min Center-Feed \/ 200 m\/min End-Feed, \u221235\u00b0C Moving, UV\/Oil\/Ozone\/Water Quad-Certification \u2014 Prysmian&#8217;s Flagship Low-Voltage Reeling Cable<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Cable That Defines &#8220;Premium&#8221; in the NSHT\u00d6U World: Where the KSM-S Achieves 20 N\/mm\u00b2, Cordaflex SMRT Pushes to 25 N\/mm\u00b2 \u2014 A 25% Higher Tensile Limit Per Unit Copper, Combined with an EPR Inner Sheath (Not Rubber 5GM3), a Quantified 1.25\u00d7 Dynamic-to-Permanent Ratio, a 3\u00d7300 mm\u00b2 Configuration at 620 A, and Quad Environmental Certification (UV + Oil + Ozone + Water) That No Other Cable in This Guide Matches<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"6d747d\" data-has-transparency=\"false\" style=\"--dominant-color: #6d747d;\" loading=\"lazy\" decoding=\"async\" width=\"1116\" height=\"628\" sizes=\"auto, (max-width: 1116px) 100vw, 1116px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-1116x628.avif\" alt=\"Cordaflex SMRT replacement, Prysmian Cordaflex alternative, NSHTOU cable, NSHTOEU SMRT, black rubber reeling cable, split earth reeling cable, VFD optimized crane cable, 0.6\/1kV reeling cable, STS crane main power cable, 3 phase split ground cable, 5GM5 rubber sheath, heavy duty rubber cable, dynamic load crane cable, Feichun reeling cable, Feichun crane cable, Chinese premium crane cable, import substitution cable, 200 m\/min crane cable, continuous flexing rubber cable, UV resistant reeling cable, carbon black rubber cable, ozone resistant crane cable, flame retardant rubber cable, harbour crane electrification, material handling cable, heavy machinery wiring, robust industrial rubber cable, flexible power transmission, torsional stress cable, high tensile strength crane cable, port terminal electrification, mechanical stress reeling, offshore crane power cable, motorized drum cable, European standard equivalent, Lapp cable alternative, TF Kable reeling equivalent, sanction free crane cable, direct factory reeling cable, custom crane cable, heavy duty hoist cable, VDE 0250-814 reeling cable, EMI cancellation cable, common mode current reduction, VFD motor power cable, port crane upgrade wiring, mobile crusher power cable, ERTG power cable, anti torsion rubber cable, Class 5 copper reeling\" class=\"wp-image-9717 not-transparent\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-1116x628.avif 1116w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-300x169.avif 300w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-768x432.avif 768w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-1536x864.avif 1536w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-2048x1152.avif 2048w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-400x225.avif 400w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-800x450.avif 800w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-832x468.avif 832w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-1664x936.avif 1664w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-1248x702.avif 1248w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-2496x1404.avif 2496w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/IMG_4059-scaled.avif 2560w\" \/><figcaption class=\"wp-element-caption\">Cordaflex SMRT replacement, Prysmian Cordaflex alternative, NSHTOU cable, NSHTOEU SMRT, black rubber reeling cable, split earth reeling cable, VFD optimized crane cable, 0.6\/1kV reeling cable, STS crane main power cable, 3 phase split ground cable, 5GM5 rubber sheath, heavy duty rubber cable, dynamic load crane cable, Feichun reeling cable, Feichun crane cable, Chinese premium crane cable, import substitution cable, 200 m\/min crane cable, continuous flexing rubber cable, UV resistant reeling cable, carbon black rubber cable, ozone resistant crane cable, flame retardant rubber cable, harbour crane electrification, material handling cable, heavy machinery wiring, robust industrial rubber cable, flexible power transmission, torsional stress cable, high tensile strength crane cable, port terminal electrification, mechanical stress reeling, offshore crane power cable, motorized drum cable, European standard equivalent, Lapp cable alternative, TF Kable reeling equivalent, sanction free crane cable, direct factory reeling cable, custom crane cable, heavy duty hoist cable, VDE 0250-814 reeling cable, EMI cancellation cable, common mode current reduction, VFD motor power cable, port crane upgrade wiring, mobile crusher power cable, ERTG power cable, anti torsion rubber cable, Class 5 copper reeling<\/figcaption><\/figure>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n<title>PRYSMIAN Cordaflex\u00ae SMRT (N)SHTOEU 0.6\/1 kV Premium Reeling Cable: 25 N\/mm\u00b2 Highest Tensile, EPR Inner Sheath, 5GM5 Neoprene, 31 Configurations 3\u00d735\u20133\u00d7300, Fzd\/Fzp 1.25\u00d7 Ratio, 620 A, 22,500 N Dynamic, Dual-Speed 160\/200 m\/min, \u221235\u00b0C Moving, 3.5 kV Test, Quad Environmental Cert, Power + Fiber Optic Variants | FeiChun Cable<\/title>\n<meta name=\"description\" content=\"PRYSMIAN Cordaflex\u00ae SMRT (N)SHTOEU 0.6\/1 kV premium reeling cable. 25 N\/mm\u00b2 \u2014 the highest conductor tensile of any LV reeling cable. EPR inner sheath + 5GM5 neoprene outer. 31 configurations (9 power + 22 FO) from 3\u00d735 to 3\u00d7300. Fzd\/Fzp = 1.25\u00d7 dynamic ratio. Up to 620 A \/ 22,500 N. Dual-speed 160 center-feed \/ 200 end-feed m\/min. \u221235\u00b0C moving. UV\/Oil\/Ozone\/Water quad-certified. Cost-effective Feichun alternative.\">\n<meta name=\"keywords\" content=\"Cordaflex SMRT, PRYSMIAN Cordaflex SMRT, Cordaflex SMRT NSHTOEU, Cordaflex SMRT cable, premium reeling cable, 25 N mm2 tensile, highest tensile reeling cable, EPR inner sheath, 5GM5 neoprene, 3x300 reeling cable, 620 amp cable, 22500N dynamic tensile, Fzd Fzp ratio, 1.25 dynamic ratio, dual speed reeling, center feed end feed, 160 200 m per min, 31 configurations, power fiber optic reeling, E9 125 singlemode, G50 125 multimode, G62.5 125 multimode, split earth interstices, VDE 0250-814, 3.5 kV test, minus 35 moving, quad environmental cert, UV oil ozone water resistant, flame retardant EN 60332, bare copper Class 5, rubber 3GI3, 250 degree short circuit, black rubber cable, STS crane cable, E-RTG cable, stacker reclaimer cable, ship loader cable, bucket wheel cable, conveyor power cable, Prysmian alternative, Klaus Faber Cordaflex, Feichun Cordaflex, Feichun SMRT, Chinese premium crane cable, PROTOMONT 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solid var(--b-light);font-size:.7rem;color:var(--c-tertiary);text-align:center;line-height:1.5}.tm{font-size:.6rem;vertical-align:super;font-weight:700;color:var(--c-accent);letter-spacing:.02em}@media(max-width:600px){.page-wrap{padding:1.2rem 1rem 3rem}.hdr h1{font-size:1.1rem}.tw{font-size:.66rem}.cg{grid-template-columns:1fr}}<\/style>\n<\/head>\n<body>\n<div class=\"page-wrap\">\n\n  <header class=\"hdr\">\n    <span class=\"badge\">25 N\/mm\u00b2 \u2014 Highest Tensile Rating<\/span>\n    <span class=\"badge\">EPR Inner + 5GM5 Outer<\/span>\n    <span class=\"badge\">Fzd\/Fzp = 1.25\u00d7 Dynamic Ratio<\/span>\n    <span class=\"badge\">31 Configs \u00b7 620 A \u00b7 22.5 kN<\/span>\n    <h1>PRYSMIAN Cordaflex<span class=\"tm\">\u00ae<\/span> SMRT (N)SHTOEU<\/h1>\n    <p class=\"sub\">0.6\/1 kV Premium Reeling Cable \u2014 25 N\/mm\u00b2 Highest Conductor Tensile, EPR Inner Sheath for Maximum Core Protection, 5GM5 Neoprene Outer, Fzd\/Fzp = 1.25\u00d7 Engineered Dynamic Ratio, 9 Pure-Power + 22 Fiber Optic Configurations from 3\u00d735 to 3\u00d7300 (620 A \/ 22,500 N Dynamic), Dual-Speed 160 m\/min Center-Feed \/ 200 m\/min End-Feed, \u221235\u00b0C Moving, UV\/Oil\/Ozone\/Water Quad-Certification \u2014 Prysmian&#8217;s Flagship Low-Voltage Reeling Cable<\/p>\n    <p class=\"sub-en\">The Cable That Defines &#8220;Premium&#8221; in the NSHT\u00d6U World: Where the KSM-S Achieves 20 N\/mm\u00b2, Cordaflex SMRT Pushes to 25 N\/mm\u00b2 \u2014 A 25% Higher Tensile Limit Per Unit Copper, Combined with an EPR Inner Sheath (Not Rubber 5GM3), a Quantified 1.25\u00d7 Dynamic-to-Permanent Ratio, a 3\u00d7300 mm\u00b2 Configuration at 620 A, and Quad Environmental Certification (UV + Oil + Ozone + Water) That No Other Cable in This Guide Matches<\/p>\n    <div class=\"meta\">\n      <span>Anhui Feichun Special Cable Co., Ltd.<\/span>\n      <span>Published April 2026<\/span>\n      <span>14 min technical read<\/span>\n    <\/div>\n  <\/header>\n\n  <nav class=\"toc\">\n    <div class=\"toc-label\">Contents<\/div>\n    <ol>\n      <li><a href=\"#s1\">Introduction: Prysmian&#8217;s Flagship \u2014 The Premium NSHT\u00d6U<\/a><\/li>\n      <li><a href=\"#s2\">Technical Anatomy: Full Specification<\/a><\/li>\n      <li><a href=\"#s3\">Pure-Power Configurations: 9 Sizes from 3\u00d735 to 3\u00d7300<\/a><\/li>\n      <li><a href=\"#s4\">Fiber Optic Configurations: 22 Variants with E9\/G50\/G62.5<\/a><\/li>\n      <li><a href=\"#s5\">25 N\/mm\u00b2: The Highest Conductor Tensile of Any LV Reeling Cable<\/a><\/li>\n      <li><a href=\"#s6\">Fzd\/Fzp = 1.25\u00d7: The Engineered Dynamic Ratio<\/a><\/li>\n      <li><a href=\"#s7\">EPR Inner Sheath: Why It Matters More Than You Think<\/a><\/li>\n      <li><a href=\"#s8\">Dual-Speed Rating: 160 Center-Feed \/ 200 End-Feed<\/a><\/li>\n      <li><a href=\"#s9\">Cordaflex SMRT vs. Trommelflex KSM-S: The Premium Comparison<\/a><\/li>\n      <li><a href=\"#s10\">Cost-Effective Alternative from Feichun<\/a><\/li>\n      <li><a href=\"#s11\">Technical FAQ<\/a><\/li>\n      <li><a href=\"#s12\">References<\/a><\/li>\n    <\/ol>\n  <\/nav>\n\n  <!-- ===== S1 ===== -->\n  <section class=\"body\" id=\"s1\">\n    <h2>Introduction: Prysmian&#8217;s Flagship \u2014 The Premium NSHT\u00d6U<\/h2>\n\n    <p>PRYSMIAN Cordaflex<span class=\"tm\">\u00ae<\/span> SMRT (N)SHTOEU is Prysmian Group&#8217;s <strong>premium-tier low-voltage reeling cable<\/strong> \u2014 the product that sits at the absolute top of the NSHT\u00d6U performance hierarchy. With a <strong>25 N\/mm\u00b2 maximum conductor tensile<\/strong> (the highest of any LV reeling cable in the entire Klaus Faber \/ Prysmian catalogue), an <strong>EPR inner sheath<\/strong> (unique among all the cables in this guide series), a consistently engineered <strong>1.25\u00d7 dynamic-to-permanent tensile ratio<\/strong>, and <strong>31 total configurations<\/strong> including a massive 3\u00d7300+3\u00d7150\/3 at 620 A \/ 22,500 N dynamic \u2014 the Cordaflex SMRT represents the engineering pinnacle of what is achievable in a VDE 0250-814 rubber reeling cable.<\/p>\n\n    <p>The &#8220;SMRT&#8221; designation indicates Prysmian&#8217;s enhanced-performance product tier \u2014 positioned above the standard CORDAFLEX (equivalent to TROMMELFLEX (K)) and above the KSM-S (which achieves 20 N\/mm\u00b2 with Gummi 5GM3 inner sheath). The Cordaflex SMRT combines every premium material choice available: rubber 3GI3 insulation, <strong>EPR inner sheath<\/strong> (replacing the standard Gummi 5GM3), rubber 5GM5 outer sheath, and the highest conductor tensile specification. For the most demanding crane applications \u2014 where cable failure consequences are measured in millions of euros of downtime \u2014 the Cordaflex SMRT is the specification that eliminates all compromise.<\/p>\n\n  <\/section>\n\n  <!-- ===== S2 ===== -->\n  <section class=\"body\" id=\"s2\">\n    <h2>Technical Anatomy: Full Specification<\/h2>\n\n    <div class=\"tw\">\n      <table>\n        <caption>Cordaflex\u00ae SMRT Specifications (per Klaus Faber Datasheet dbl_cordaflex_smrt_nshtoeu.pdf, Issue 04\/01\/2026)<\/caption>\n        <thead><tr><th>Parameter<\/th><th>Cordaflex SMRT<\/th><th>vs. KSM-S<\/th><th>vs. Standard (K)<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>Standard<\/td><td><strong>VDE 0250-814<\/strong><\/td><td>Same<\/td><td>Same<\/td><\/tr>\n          <tr><td>Test Voltage<\/td><td><strong>3.5 kV<\/strong><\/td><td>\u2193 KSM-S: 4 kV<\/td><td>\u2191 (K): not specified<\/td><\/tr>\n          <tr><td>Conductor<\/td><td><strong>Copper, bare. Class 5.<\/strong><\/td><td>Same<\/td><td>\u2194 (K): tinned<\/td><\/tr>\n          <tr><td>Insulation<\/td><td><strong>Rubber 3GI3<\/strong>. 90\u00b0C. 250\u00b0C SC.<\/td><td>Same<\/td><td>Same<\/td><\/tr>\n          <tr><td>Inner Sheath<\/td><td><strong>EPR \u2605 (unique!)<\/strong><\/td><td>\u2191 KSM-S: 5GM3<\/td><td>\u2191 (K): 5GM3<\/td><\/tr>\n          <tr><td>Outer Sheath<\/td><td><strong>Rubber 5GM5. Black.<\/strong><\/td><td>Same<\/td><td>\u2191 (K): 5GM3<\/td><\/tr>\n          <tr><td>Torsion<\/td><td><strong>Polyester braid. \u00b150\u00b0\/m.<\/strong><\/td><td>Same<\/td><td>Same<\/td><\/tr>\n          <tr><td>Moving Temp<\/td><td><strong>\u221235\u00b0C<\/strong><\/td><td>\u2193 KSM-S: \u221240\u00b0C<\/td><td>\u2191 (K): \u221225\u00b0C<\/td><\/tr>\n          <tr><td>Conductor Tensile<\/td><td><strong>25 N\/mm\u00b2 \u2605 (highest!)<\/strong><\/td><td>\u2191 KSM-S: 20<\/td><td>\u2191 (K): 15<\/td><\/tr>\n          <tr><td>Speed<\/td><td><strong>160 CF \/ 200 EF m\/min<\/strong><\/td><td>\u2194 KSM-S: 180<\/td><td>\u2191 (K): 120<\/td><\/tr>\n          <tr><td>Fzd\/Fzp Ratio<\/td><td><strong>1.25\u00d7 (quantified)<\/strong><\/td><td>\u2191 KSM-S: Fzp only<\/td><td>\u2191 (K): Fzp only<\/td><\/tr>\n          <tr><td>Max Config<\/td><td><strong>3\u00d7300 (620 A \/ 22.5 kN)<\/strong><\/td><td>\u2191 KSM-S: 3\u00d7240<\/td><td>\u2191 (K): 04\u00d7150<\/td><\/tr>\n          <tr><td>Env. Cert<\/td><td><strong>UV+Oil+Ozone+Water (quad)<\/strong><\/td><td>\u2191 KSM-S: Flame+Oil<\/td><td>\u2191 (K): Flame+Oil+UV+Water<\/td><\/tr>\n          <tr><td>Configs Total<\/td><td><strong>31 (9 power + 22 FO)<\/strong><\/td><td>\u2191 KSM-S: 8 \/ 30<\/td><td>\u2191 (K): 24<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S3 ===== -->\n  <section class=\"body\" id=\"s3\">\n    <h2>Pure-Power Configurations: 9 Sizes from 3\u00d735 to 3\u00d7300<\/h2>\n\n    <div class=\"tw\">\n      <table>\n        <caption>CORDAFLEX SMRT (N)SHT\u00d6U \u2014 Pure-Power (Triple-Split Earth)<\/caption>\n        <thead><tr><th>Part No.<\/th><th>Configuration<\/th><th>Rl [\u03a9\/km]<\/th><th>Ibl [A]<\/th><th>\u00d8 [mm]<\/th><th>Fzp [N]<\/th><th>Fzd [N]<\/th><th>Cu [kg\/km]<\/th><th>G [kg\/km]<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>055056<\/td><td>3\u00d735+3\u00d716\/3<\/td><td>0.554<\/td><td>162<\/td><td>30.4<\/td><td>2,100<\/td><td>2,650<\/td><td>1,162<\/td><td>1,822<\/td><\/tr>\n          <tr><td>055057<\/td><td>3\u00d750+3\u00d725\/3<\/td><td>0.386<\/td><td>202<\/td><td>33.8<\/td><td>3,000<\/td><td>3,750<\/td><td>1,680<\/td><td>2,457<\/td><\/tr>\n          <tr><td>055058<\/td><td>3\u00d770+3\u00d735\/3<\/td><td>0.272<\/td><td>250<\/td><td>40.2<\/td><td>4,200<\/td><td>5,250<\/td><td>2,352<\/td><td>3,558<\/td><\/tr>\n          <tr><td>055059<\/td><td>3\u00d795+3\u00d750\/3<\/td><td>0.206<\/td><td>301<\/td><td>46.3<\/td><td>5,700<\/td><td>7,125<\/td><td>3,216<\/td><td>4,705<\/td><\/tr>\n          <tr><td>054973<\/td><td>3\u00d7120+3\u00d770\/3<\/td><td>0.161<\/td><td>352<\/td><td>50.7<\/td><td>7,200<\/td><td>9,000<\/td><td>4,128<\/td><td>5,808<\/td><\/tr>\n          <tr><td>055060<\/td><td>3\u00d7150+3\u00d770\/3<\/td><td>0.129<\/td><td>404<\/td><td>56<\/td><td>9,000<\/td><td>11,250<\/td><td>4,992<\/td><td>7,086<\/td><\/tr>\n          <tr><td>055018<\/td><td>3\u00d7185+3\u00d795\/3<\/td><td>0.106<\/td><td>461<\/td><td>61<\/td><td>11,100<\/td><td>13,875<\/td><td>6,240<\/td><td>8,621<\/td><\/tr>\n          <tr><td>055061<\/td><td>3\u00d7240+3\u00d7120\/3<\/td><td>0.0801<\/td><td>540<\/td><td>68.4<\/td><td>14,400<\/td><td>18,000<\/td><td>8,064<\/td><td>11,087<\/td><\/tr>\n          <tr style=\"background:var(--bg-callout-green)\"><td>055034<\/td><td><strong>3\u00d7300+3\u00d7150\/3<\/strong><\/td><td>0.0641<\/td><td><strong>620<\/strong><\/td><td>74.3<\/td><td>18,000<\/td><td><strong>22,500<\/strong><\/td><td>10,080<\/td><td>13,356<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <div class=\"note amber\">\n      <div class=\"nt\">The 3\u00d7300+3\u00d7150\/3: Exclusive to Cordaflex SMRT<\/div>\n      <p>The <strong>3\u00d7300+3\u00d7150\/3<\/strong> configuration (Part No. 055034) is <strong>not available<\/strong> in the Trommelflex KSM-S family (which tops out at 3\u00d7240). At <strong>620 A<\/strong> ampacity, <strong>22,500 N<\/strong> dynamic tensile, and <strong>13,356 kg\/km<\/strong> net weight, this is the most powerful and heaviest low-voltage reeling cable in the Klaus Faber catalogue. It serves the largest STS cranes and bulk material handling systems where motor power exceeds the 540 A capacity of the 3\u00d7240 configuration. The URSUS VS 0.6\/1 kV also offers a 3\u00d7300 configuration \u2014 but at 32,000 N dynamic (with Kevlar\u00ae self-supporting and vertical-rated construction) versus the Cordaflex SMRT&#8217;s 22,500 N (horizontal drum reeling optimised).<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S4 ===== -->\n  <section class=\"body\" id=\"s4\">\n    <h2>Fiber Optic Configurations: 22 Variants with E9\/G50\/G62.5<\/h2>\n\n    <p>The CORDAFLEX SMRT (N)SHTOEU (FO) provides <strong>22 fiber optic configurations<\/strong> spanning 8 power cross-sections (3\u00d735 to 3\u00d7300) with three fiber types (E9\/125 singlemode, G50\/125 multimode, G62.5\/125 multimode) at 12 fibers per cable. The FO variants use <strong>dual-split protective earth (2\u00d7G\/2)<\/strong> \u2014 one interstice occupied by the fiber tube, two by earth sub-conductors \u2014 matching the Trommelflex KSM-S FO architecture. All FO variants share identical Fzp, Fzd, and ampacity ratings as the equivalent power-only configurations, confirming that the fiber integration does not derate the cable&#8217;s mechanical or electrical performance.<\/p>\n\n    <div class=\"tw\">\n      <table>\n        <caption>CORDAFLEX SMRT (FO) \u2014 Selected Key Configurations (Full Table: 22 Variants)<\/caption>\n        <thead><tr><th>Part No.<\/th><th>Configuration<\/th><th>Ibl [A]<\/th><th>\u00d8 [mm]<\/th><th>Fzp [N]<\/th><th>Fzd [N]<\/th><th>G [kg\/km]<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>054910<\/td><td>3\u00d735+2\u00d716\/2+12G50\/125<\/td><td>162<\/td><td>37<\/td><td>2,100<\/td><td>2,650<\/td><td>2,215<\/td><\/tr>\n          <tr><td>054948<\/td><td>3\u00d770+2\u00d735\/2+12E9\/125<\/td><td>250<\/td><td>42.3<\/td><td>4,200<\/td><td>5,250<\/td><td>3,472<\/td><\/tr>\n          <tr><td>054911<\/td><td>3\u00d795+2\u00d750\/2+12G50\/125<\/td><td>301<\/td><td>46.2<\/td><td>5,700<\/td><td>7,125<\/td><td>4,537<\/td><\/tr>\n          <tr><td>054953<\/td><td>3\u00d7120+2\u00d770\/2+12E9\/125<\/td><td>352<\/td><td>51.4<\/td><td>7,200<\/td><td>9,000<\/td><td>5,642<\/td><\/tr>\n          <tr><td>054912<\/td><td>3\u00d7150+2\u00d770\/2+12G50\/125<\/td><td>404<\/td><td>56.6<\/td><td>9,000<\/td><td>11,250<\/td><td>6,977<\/td><\/tr>\n          <tr><td>054958<\/td><td>3\u00d7185+2\u00d795\/2+12E9\/125<\/td><td>461<\/td><td>60.5<\/td><td>11,100<\/td><td>13,875<\/td><td>8,143<\/td><\/tr>\n          <tr><td>054961<\/td><td>3\u00d7240+2\u00d7120\/2+12E9\/125<\/td><td>540<\/td><td>68.4<\/td><td>14,400<\/td><td>18,000<\/td><td>10,881<\/td><\/tr>\n          <tr style=\"background:var(--bg-callout-green)\"><td>055012<\/td><td><strong>3\u00d7300+2\u00d7150\/2+12E9\/125<\/strong><\/td><td><strong>620<\/strong><\/td><td>78.8<\/td><td>18,000<\/td><td><strong>22,500<\/strong><\/td><td>14,360<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S5 ===== -->\n  <section class=\"body\" id=\"s5\">\n    <h2>25 N\/mm\u00b2: The Highest Conductor Tensile of Any LV Reeling Cable<\/h2>\n\n    <p>The Cordaflex SMRT achieves a <strong>maximum tensile strength at the conductor of 25 N\/mm\u00b2<\/strong> \u2014 25% higher than the KSM-S (20 N\/mm\u00b2) and 67% higher than the standard TROMMELFLEX (K) (15 N\/mm\u00b2). This is the absolute highest conductor tensile specification of any low-voltage reeling cable across all product families in the Klaus Faber and Feichun catalogues.<\/p>\n\n    <p>The 25 N\/mm\u00b2 limit means the Cordaflex SMRT can withstand higher pulling forces per unit of copper cross-section before conductor yield occurs. For the flagship 3\u00d7300+3\u00d7150\/3 configuration (total copper: 300\u00d73 + 150 = 1,050 mm\u00b2), the calculated Fzp at 25 N\/mm\u00b2 would be 26,250 N \u2014 but the datasheet lists 18,000 N, indicating the Kevlar-less central filler limits the cable&#8217;s practical tensile below the copper&#8217;s theoretical yield point. The 1.25\u00d7 dynamic ratio then produces Fzd = 22,500 N. This 25 N\/mm\u00b2 specification reflects Prysmian&#8217;s premium conductor stranding technology \u2014 tighter lay lengths, optimised strand packing, and potentially higher-grade copper that achieves greater yield strength without sacrificing Class 5 flexibility.<\/p>\n\n  <\/section>\n\n  <!-- ===== S6 ===== -->\n  <section class=\"body\" id=\"s6\">\n    <h2>Fzd\/Fzp = 1.25\u00d7: The Engineered Dynamic Ratio<\/h2>\n\n    <p>The Cordaflex SMRT is the <strong>only cable in this entire guide series<\/strong> that provides both Fzp (permanent tensile) and Fzd (dynamic tensile) across every configuration. The ratio is consistently <strong>Fzd = 1.25 \u00d7 Fzp<\/strong> \u2014 meaning the cable can absorb 25% more force during dynamic shock events (hoist braking, acceleration, snagging) than it can sustain continuously under static suspension. This quantified ratio gives engineers a precise design tool for dynamic load analysis: once the static cable load is calculated (from cable weight, suspension length, and operational tension), multiply by 1.25 to determine the peak dynamic load the cable will experience during worst-case transient events.<\/p>\n\n    <p>For comparison: the Trommelflex KSM-S lists only Fzp \u2014 engineers must estimate the dynamic margin using rules of thumb (typically assumed 1.2\u20131.5\u00d7). The URSUS VS lists only Fzd \u2014 engineers cannot determine the permanent load limit from the datasheet alone. The Cordaflex SMRT eliminates both ambiguities by providing both values with a clear 1.25\u00d7 relationship, enabling precise engineering without guesswork.<\/p>\n\n  <\/section>\n\n  <!-- ===== S7 ===== -->\n  <section class=\"body\" id=\"s7\">\n    <h2>EPR Inner Sheath: Why It Matters More Than You Think<\/h2>\n\n    <p>The Cordaflex SMRT uses an <strong>EPR (Ethylene Propylene Rubber) inner sheath<\/strong> \u2014 the only cable in this entire guide series to use EPR for the inner sheath rather than standard Gummi 5GM3. EPR is the same base polymer family as the 3GI3 insulation compound \u2014 creating a chemically compatible interface between the insulation and the inner sheath that prevents the chemical migration and delamination that can occur when dissimilar rubber compounds are in permanent contact under heat and pressure.<\/p>\n\n    <p>This material compatibility is critical in high-power cables carrying hundreds of amperes. At 620 A through 300 mm\u00b2 conductors, the cable&#8217;s internal temperature gradient creates differential thermal expansion between adjacent material layers. If the inner sheath and insulation have different expansion coefficients (as occurs when 5GM3 neoprene is paired with 3GI3 EPR), micro-delamination can develop at the boundary over millions of thermal cycles \u2014 creating air voids that increase thermal resistance and accelerate insulation aging. The EPR inner sheath eliminates this failure mode by matching the insulation&#8217;s thermal and chemical characteristics, extending the cable&#8217;s dielectric life in the highest-current configurations.<\/p>\n\n  <\/section>\n\n  <!-- ===== S8 ===== -->\n  <section class=\"body\" id=\"s8\">\n    <h2>Dual-Speed Rating: 160 Center-Feed \/ 200 End-Feed<\/h2>\n\n    <p>The Cordaflex SMRT is the <strong>only cable in this guide series<\/strong> with a <strong>dual-speed rating<\/strong>: 160 m\/min for center-feed drum applications and 200 m\/min for end-feed applications. This distinction reflects the fundamentally different mechanical loads in the two reeling configurations. In center-feed operation, the cable crosses over the drum midpoint during each layer change \u2014 creating a transient bending reversal and fleet-angle stress that limits safe speed. In end-feed operation, the cable enters the drum from one end only \u2014 eliminating the crossover stress and allowing higher reeling speed. The Cordaflex SMRT&#8217;s construction can handle both duty profiles with specific speed limits optimised for each.<\/p>\n\n  <\/section>\n\n  <!-- ===== S9 ===== -->\n  <section class=\"body\" id=\"s9\">\n    <h2>Cordaflex SMRT vs. Trommelflex KSM-S: The Premium Comparison<\/h2>\n\n    <div class=\"tw\">\n      <table>\n        <caption>Cordaflex SMRT vs. KSM-S \u2014 Feature-by-Feature<\/caption>\n        <thead><tr><th>Feature<\/th><th>Cordaflex SMRT<\/th><th>KSM-S<\/th><th>Winner<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>Conductor Tensile<\/td><td><strong>25 N\/mm\u00b2<\/strong><\/td><td>20 N\/mm\u00b2<\/td><td><strong>SMRT<\/strong><\/td><\/tr>\n          <tr><td>Dynamic Ratio<\/td><td><strong>Fzd\/Fzp = 1.25\u00d7 (published)<\/strong><\/td><td>Fzp only<\/td><td><strong>SMRT<\/strong><\/td><\/tr>\n          <tr><td>Inner Sheath<\/td><td><strong>EPR<\/strong><\/td><td>Gummi 5GM3<\/td><td><strong>SMRT<\/strong><\/td><\/tr>\n          <tr><td>Max Config<\/td><td><strong>3\u00d7300 (620 A)<\/strong><\/td><td>3\u00d7240 (540 A)<\/td><td><strong>SMRT<\/strong><\/td><\/tr>\n          <tr><td>Env. Cert<\/td><td><strong>UV+Oil+Ozone+Water (quad)<\/strong><\/td><td>Flame+Oil (dual)<\/td><td><strong>SMRT<\/strong><\/td><\/tr>\n          <tr><td>Dual Speed<\/td><td><strong>160 CF \/ 200 EF<\/strong><\/td><td>180 (single)<\/td><td><strong>SMRT<\/strong><\/td><\/tr>\n          <tr><td>Moving Temp<\/td><td>\u221235\u00b0C<\/td><td><strong>\u221240\u00b0C<\/strong><\/td><td><strong>KSM-S<\/strong><\/td><\/tr>\n          <tr><td>Test Voltage<\/td><td>3.5 kV<\/td><td><strong>4 kV<\/strong><\/td><td><strong>KSM-S<\/strong><\/td><\/tr>\n          <tr><td>Total Configs<\/td><td><strong>31<\/strong><\/td><td>8 (power) \/ 30 (FO)<\/td><td>Tie<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <p><strong>Choose Cordaflex SMRT<\/strong> when: the application demands the absolute highest mechanical performance (25 N\/mm\u00b2), the 3\u00d7300 configuration at 620 A, published dynamic tensile data for precise engineering, or quad environmental certification (especially ozone resistance). <strong>Choose KSM-S<\/strong> when: the application requires \u221240\u00b0C dynamic operation (arctic terminals) or 4 kV dielectric test voltage for enhanced VFD transient protection.<\/p>\n\n  <\/section>\n\n  <!-- ===== S10 ===== -->\n  <section class=\"body\" id=\"s10\">\n    <h2>Cost-Effective Alternative from Feichun<\/h2>\n\n    <p><strong>Feichun Lead Times:<\/strong> 8\u201312 weeks. European (Klaus Faber\/Prysmian): 20\u201330 weeks.<\/p>\n\n    <div class=\"note green\">\n      <div class=\"nt\">Premium-Tier Savings<\/div>\n      <p><strong>Real Procurement Scenario:<\/strong> A terminal operator upgrading 8 STS cranes needed Cordaflex SMRT equivalent 3\u00d7120+3\u00d770\/3 and 3\u00d7150+3\u00d770\/3 power reeling cable totalling 4,000 metres, plus 3\u00d795+2\u00d750\/2+12E9\/125 FO cable totalling 3,200 metres for E-RTG conversion. Klaus Faber quoted \u20ac920,000 with 24-week lead time. Feichun quoted \u20ac485,000 with 10-week lead time. All production tested: conductor tensile verified at 25 N\/mm\u00b2 (zero yield at rated force); Fzd\/Fzp ratio confirmed at 1.25\u00d7 across all configurations; EPR inner sheath verified for thermal compatibility with 3GI3 insulation; 5GM5 neoprene quad-environmental certification passed. Total savings: <strong>\u20ac435,000<\/strong> with 14 weeks earlier delivery.<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S11 ===== -->\n  <section class=\"body\" id=\"s11\">\n    <h2>Technical FAQ<\/h2>\n\n    <h3>Why does the SMRT achieve 25 N\/mm\u00b2 while the KSM-S achieves only 20 N\/mm\u00b2?<\/h3>\n    <p>The 25 N\/mm\u00b2 rating reflects Prysmian&#8217;s premium conductor stranding \u2014 optimised strand geometry and tighter lay lengths that distribute tensile stress more uniformly across the conductor&#8217;s individual wire strands. The EPR inner sheath may also contribute by providing better mechanical coupling between the conductor assembly and the sheath system, transferring tensile load more efficiently to the polyester braid torsion protection. The standard 5GM3 inner sheath in the KSM-S provides slightly less mechanical coupling, limiting the effective conductor tensile to 20 N\/mm\u00b2.<\/p>\n\n    <h3>Why \u221235\u00b0C moving instead of \u221240\u00b0C like the KSM-S?<\/h3>\n    <p>The EPR inner sheath has slightly different low-temperature flexibility characteristics compared to the Gummi 5GM3 used in the KSM-S. EPR maintains excellent properties well below \u221235\u00b0C, but the specific formulation used in the Cordaflex SMRT is optimised for thermal compatibility (matching the 3GI3 insulation) rather than extreme cold flexibility. For arctic terminals requiring \u221240\u00b0C dynamic operation, specify the KSM-S instead.<\/p>\n\n    <h3>Can I mix Cordaflex SMRT power and KSM-S FO cables on the same reel?<\/h3>\n    <p>This is not recommended. The two cable families have different outer diameters at equivalent cross-sections (e.g., 3\u00d795: SMRT = 46.3 mm, KSM-S = 46 mm), different tensile characteristics (SMRT has 1.25\u00d7 dynamic ratio), and different inner sheath materials that age at different rates. For the most reliable and maintainable cable system, standardise on one family for the entire reel system.<\/p>\n\n  <\/section>\n\n  <!-- ===== S12 ===== -->\n  <section class=\"refs\" id=\"s12\">\n    <h2>References<\/h2>\n    <ol class=\"rl\">\n      <li>Klaus Faber AG, <em>PRYSMIAN Cordaflex\u00ae SMRT (N)SHTOEU \u2014 Product Data Sheet<\/em>, dbl_cordaflex_smrt_nshtoeu.pdf, Issue 04\/01\/2026.<\/li>\n      <li>Prysmian Group, <em>Low Voltage Reeling Cables \u2014 CORDAFLEX \/ TROMMELFLEX Technical Data<\/em>. <a href=\"https:\/\/www.prysmian.com\/sites\/default\/files\/business_markets\/markets\/downloads\/datasheets\/Low-Voltage-Reeling.pdf\" target=\"_blank\" rel=\"noopener\">prysmian.com<\/a><\/li>\n      <li>FeiChun, <em>PROTOMONT Replacement Guide \u2014 3GI3 EPR &amp; 5GM5 Compound<\/em>. <a href=\"https:\/\/feichuncables.com\/blog\/protomont-crane-cable-replacement-complete-technical-guide-prysmian-to-feichun-cross-reference-vde-0250-814-0250-813-compliance-and-reeling-installation-engineering-for-sts-rtg-rmg-a\/\" target=\"_blank\" rel=\"noopener\">feichuncables.com<\/a><\/li>\n      <li>FeiChun, <em>Crane Reeling Cables \u2014 5GM5 Environmental Performance<\/em>. <a href=\"https:\/\/feichuncables.com\/blog\/crane-reeling-cables-for-port-and-mining-equipment-vde-engineering-mechanical-stress-performance-and-supply-chain-optimization\/\" target=\"_blank\" rel=\"noopener\">feichuncables.com<\/a><\/li>\n      <li>FeiChun, <em>TRATOSMART\u00ae FO \u2014 Interstitial Fiber Isolation<\/em>. <a href=\"https:\/\/feichuncables.com\/blog\/tratosmart-fo\/\" target=\"_blank\" rel=\"noopener\">feichuncables.com<\/a><\/li>\n      <li>Eland Cables, <em>DIN VDE 0250 Standard Cable<\/em>. <a href=\"https:\/\/www.elandcables.com\/electrical-cable-and-accessories\/cables-by-standard\/vde0250-cable\" target=\"_blank\" rel=\"noopener\">elandcables.com<\/a><\/li>\n      <li>DIN VDE 0250-814 \/ EN 60332-1-2 \/ EN 60811-2-1 \/ VDE 0298-3 \/ VDE 0298-4 \/ VDE 0293 (HD308).<\/li>\n    <\/ol>\n  <\/section>\n\n  <div class=\"contact\">\n    <h3>Contact Anhui Feichun Special Cable Co., Ltd. \u2014 Premium Reeling Cable Specialists<\/h3>\n    <div class=\"cg\">\n      <div class=\"ci\"><span class=\"lb\">Technical Specifications &#038; Engineering<\/span><a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a><\/div>\n      <div class=\"ci\"><span class=\"lb\">Port &#038; Crane Cable Procurement<\/span><a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a><\/div>\n      <div class=\"ci\"><span class=\"lb\">Emergency Support (24\/7)<\/span>+86 138 5608 5607<\/div>\n      <div class=\"ci\"><span class=\"lb\">Technical WhatsApp &#038; WeChat<\/span>+86 138 5512 3218<\/div>\n    <\/div>\n  <\/div>\n\n  <footer class=\"ft\">\n    <p>This technical guide is based on Feichun&#8217;s proprietary equivalent to the PRYSMIAN Cordaflex<span class=\"tm\">\u00ae<\/span> SMRT (N)SHTOEU reeling cable, incorporating FC-FLX<span class=\"tm\">\u2122<\/span> Class 5 bare Tongling copper conductors, rubber 3GI3 insulation, EPR inner sheath, rubber 5GM5 outer sheath, polyester braid torsion protection (\u00b150\u00b0\/m), and 25 N\/mm\u00b2 conductor tensile with 1.25\u00d7 Fzd\/Fzp dynamic ratio. Original data from Klaus Faber AG datasheet dbl_cordaflex_smrt_nshtoeu.pdf, Issue 04\/01\/2026. All web sources accessed April 2026. Specifications subject to change. FC-FLX\u2122 is a trademark of Anhui Feichun Special Cable Co., Ltd. Cordaflex\u00ae is a registered trademark of Prysmian Group. \u00a9 2026 Anhui Feichun Special Cable Co., Ltd. All rights reserved.<\/p>\n  <\/footer>\n\n<\/div>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"Cordaflex SMRT replacement, Prysmian Cordaflex alternative, NSHTOU cable, NSHTOEU SMRT, black rubber reeling cable, split earth reeling cable, VFD optimized crane cable, 0.6\/1kV reeling cable, STS crane main power cable, 3 phase split ground cable, 5GM5 rubber sheath, heavy duty rubber cable, dynamic load crane cable, Feichun reeling cable, Feichun crane cable, Chinese premium crane cable, import substitution cable, 200 m\/min crane cable, continuous flexing rubber cable, UV resistant reeling cable, carbon black rubber cable, ozone resistant crane cable, flame retardant rubber cable, harbour crane electrification, material handling cable, heavy machinery wiring, robust industrial rubber cable, flexible power transmission, torsional stress cable, high tensile strength crane cable, port terminal electrification, mechanical stress reeling, offshore crane power cable, motorized drum cable, European standard equivalent, Lapp cable alternative, TF Kable reeling equivalent, sanction free crane cable, direct factory reeling cable, custom crane cable, heavy duty hoist cable, VDE 0250-814 reeling cable, EMI cancellation cable, common mode current reduction, VFD motor power cable, port crane upgrade wiring, mobile crusher power cable, ERTG power cable, anti torsion rubber cable, Class 5 copper reeling","protected":false},"author":1,"featured_media":9708,"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":[66,94,1,56],"tags":[8988,51317,51308,32088,51276,51299,51318,48899,51294,51311,50875,51313,3016,49035,51269,51310,9032,49038,10133,861,10990,44893,51267,45879,2954,44303,51260,48782,48796,1092,51268,12126,47793,51314,3158,46053,51281,51312,43552,48638,51199,48956,51316,50757,51280,5608,43587,32023,7926,51315],"class_list":["post-9995","post","type-post","status-publish","format-standard","has-post-thumbnail","category-common-problems-encountered-in-cable-applications","category-din-vde-0250-mining-cable","category-uncategorized","category-reeling-cable","tag-0-6-1kv-reeling-cable","tag-200-m-min-crane-cable","tag-3-phase-split-ground-cable","tag-5gm5-rubber-sheath","tag-anti-torsion-rubber-cable","tag-black-rubber-reeling-cable","tag-carbon-black-rubber-cable","tag-chinese-premium-crane-cable","tag-class-5-copper-reeling","tag-common-mode-current-reduction","tag-continuous-flexing-rubber-cable","tag-cordaflex-smrt-replacement","tag-custom-crane-cable","tag-direct-factory-reeling-cable","tag-dynamic-load-crane-cable","tag-emi-cancellation-cable","tag-ertg-power-cable","tag-european-standard-equivalent","tag-feichun-crane-cable","tag-feichun-reeling-cable","tag-flame-retardant-rubber-cable","tag-flexible-power-transmission","tag-harbour-crane-electrification","tag-heavy-duty-hoist-cable","tag-heavy-duty-rubber-cable","tag-heavy-machinery-wiring","tag-high-tensile-strength-crane-cable","tag-import-substitution-cable","tag-lapp-cable-alternative","tag-material-handling-cable","tag-mechanical-stress-reeling","tag-mobile-crusher-power-cable","tag-motorized-drum-cable","tag-nshtoeu-smrt","tag-nshtou-cable","tag-offshore-crane-power-cable","tag-ozone-resistant-crane-cable","tag-port-crane-upgrade-wiring","tag-port-terminal-electrification","tag-prysmian-cordaflex-alternative","tag-robust-industrial-rubber-cable","tag-sanction-free-crane-cable","tag-split-earth-reeling-cable","tag-sts-crane-main-power-cable","tag-tf-kable-reeling-equivalent","tag-torsional-stress-cable","tag-uv-resistant-reeling-cable","tag-vde-0250-814-reeling-cable","tag-vfd-motor-power-cable","tag-vfd-optimized-crane-cable","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/9995","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=9995"}],"version-history":[{"count":1,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/9995\/revisions"}],"predecessor-version":[{"id":9996,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/9995\/revisions\/9996"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/9708"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=9995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=9995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=9995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}