{"id":10164,"date":"2026-04-08T09:26:46","date_gmt":"2026-04-08T01:26:46","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=10164"},"modified":"2026-04-08T09:26:49","modified_gmt":"2026-04-08T01:26:49","slug":"ursus-mt-kn-plus","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/ursus-mt-kn-plus\/","title":{"rendered":"URSUS\u00ae\u00a0MT KN PLUS"},"content":{"rendered":"\n

Advanced ultra-compact, lightweight medium-voltage reeling cable engineered for extreme mechanical stress and ultra-high-speed operations. Features Kevlar\u00ae<\/sup><\/strong>-reinforced semiconductive center element, polyester braid torsion protection, chloroprene rubber outer sheath, electromagnetic induction LED self-luminous illumination, 240 metres per minute operating speed, \u00b125 degrees per metre torsion tolerance, and 30 N\/mm\u00b2<\/sup><\/strong> tensile strength (2\u00d7 standard DIN cables)\u2014engineered for deep-sea drilling, offshore wind installation ships, high-speed tunnelling machines, and extreme industrial winch systems.<\/p>\n\n\n\n

Ultra-High-Performance Industrial Reeling Cable Engineering: Upgraded DIN VDE 0250-813 flexible medium-voltage cable with Kevlar-reinforced center filler element for weight reduction and mechanical enhancement, polyester torsion protection braid for \u00b125\u00b0\/m torsion tolerance, chloroprene rubber (CR) outer sheath for superior flexibility and abrasion resistance, electromagnetic induction energy harvesting LED self-luminous modules for real-time cable identification at extreme speed, Class 5 tinned copper conductors with 30 N\/mm\u00b2 tensile strength (vs. 15 N\/mm\u00b2 standard), EPR 3GI3 insulation, reduced overall diameter and weight without sacrificing current capacity, operating temperature range \u221250 to +80 \u00b0C (fixed) and \u221230 to +80 \u00b0C (moving), short-circuit temperature capability to 250 \u00b0C, available in voltage ratings 3.6\/6 kV through 12\/20 kV.<\/p>\n\n\n\n

\"The
The URSUS\u00ae MT KN PLUS represents a paradigm shift in high-performance reeling cable engineering. Designed for applications operating at 240 metres per minute\u2014more than 3\u00d7 faster than standard TBM or mining hoist cables\u2014this cable combines extreme mechanical durability with unprecedented lightweight performance, enabled by Kevlar\u00ae-reinforced core construction.

Applications requiring ultra-high-speed reeling (deep-sea drilling riser deployment, offshore wind turbine installation vessels, ultra-fast tunnelling machines, and extreme industrial winches) have long sacrificed either speed capability or mechanical reliability. Conventional cables break under the torsional and tensile stresses of 240 m\/min operation. The URSUS MT KN PLUS eliminates this compromise: it delivers double the tensile strength of standard cables while reducing overall weight and diameter, enabling faster deployment cycles, larger cable payloads per reel, and dramatically improved operational efficiency.<\/figcaption><\/figure>\n\n\n\n\n\n\n\n\nURSUS\u00ae MT KN PLUS \u2014 Ultra-High-Speed Medium Voltage Reeling Cable with Extreme Mechanical Stress Tolerance and LED Self-Luminous Technology | 240 m\/min, \u00b125\u00b0\/m Torsion, 30 N\/mm\u00b2 Tensile Strength<\/title>\n<meta name=\"description\" content=\"URSUS\u00ae MT KN PLUS is a revolutionary ultra-compact, lightweight medium-voltage reeling cable engineered for extreme mechanical stress applications. Features Kevlar-reinforced center element, polyester braid torsion protection, chloroprene rubber outer sheath, 240 m\/min operating speed, \u00b125\u00b0\/m torsion tolerance, 30 N\/mm\u00b2 tensile strength (2\u00d7 standard), and integrated electromagnetic induction LED self-luminous technology. Ideal for deep-sea drilling, offshore wind installation, high-speed TBM, and extreme industrial winch systems.\">\n<meta name=\"keywords\" content=\"ultra-high-speed reeling cable, torsion protection cable, Kevlar reinforced cable, deep-sea drilling cable, offshore cable, high-speed reel cable, extreme stress cable, medium voltage reeling, 240 m\/min cable, LED self-luminous reeling cable, URSUS MT KN PLUS, reduced weight cable\">\n<meta name=\"author\" content=\"Anhui Feichun Special Cable Co., Ltd.\">\n<meta name=\"robots\" content=\"index,follow\">\n<meta property=\"og:title\" content=\"URSUS\u00ae MT KN PLUS \u2014 Ultra-High-Speed Medium Voltage Reeling Cable with Extreme Mechanical Stress Tolerance and LED Self-Luminous Technology\">\n<meta property=\"og:type\" content=\"article\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Source+Serif+4:ital,wght@0,400;0,600;0,700;0,800;1,400&family=Instrument+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap\" rel=\"stylesheet\">\n<style>:root{color-scheme:light dark;--bg-body:#F5F3EE;--bg-surface:#FFFFFF;--bg-recessed:#EDEAE4;--bg-code:#F0EDE7;--bg-th:#1C1C1C;--bg-tr-alt:#F8F6F2;--bg-callout-blue:#EBF3FD;--bg-callout-amber:#FFF8E6;--bg-callout-green:#E9F7EF;--c-body:#222222;--c-secondary:#4D4D4D;--c-tertiary:#777777;--c-inverse:#FFFFFF;--c-cn:#666666;--c-link:#0066CC;--c-link-hover:#004499;--c-accent:#0066CC;--b-rule:#D8D5CE;--b-light:#E8E5DF;--b-accent:#0066CC;--b-table:#CBC8C1;--sh-sm:0 1px 2px rgba(0,0,0,0.05);--sh-md:0 3px 10px rgba(0,0,0,0.07);--sh-table:0 1px 4px rgba(0,0,0,0.06);--badge-bg:#1C1C1C;--badge-c:#FFFFFF;--hl-green:#E1F5E6;--hl-red:#FDE8E1;--hl-red-glow:rgba(255,60,60,0.08)}@media(prefers-color-scheme:dark){:root{--bg-body:#111111;--bg-surface:#1A1A1A;--bg-recessed:#222222;--bg-code:#252525;--bg-th:#282828;--bg-tr-alt:#161616;--bg-callout-blue:#162030;--bg-callout-amber:#25200E;--bg-callout-green:#142218;--c-body:#E2E0DB;--c-secondary:#ADABA6;--c-tertiary:#888683;--c-inverse:#111111;--c-cn:#908E89;--c-link:#6BA3FF;--c-link-hover:#8CB5FF;--c-accent:#6BA3FF;--b-rule:#333333;--b-light:#2A2A2A;--b-accent:#6BA3FF;--b-table:#363636;--sh-sm:0 1px 2px rgba(0,0,0,0.25);--sh-md:0 3px 10px rgba(0,0,0,0.35);--sh-table:0 1px 4px rgba(0,0,0,0.3);--badge-bg:#6BA3FF;--badge-c:#111111;--hl-green:#16291A;--hl-red:#2A1714;--hl-red-glow:rgba(255,60,60,0.15)}}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:'Instrument Sans',-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-body);color:var(--c-body);line-height:1.8;overflow-x:hidden}.page-wrap{max-width:880px;margin:0 auto;padding:2.5rem 1.25rem 4rem}.hdr{padding-bottom:2rem;margin-bottom:2.5rem;border-bottom:2px solid var(--b-accent)}.hdr .badge{display:inline-block;background:var(--badge-bg);color:var(--badge-c);font-size:.68rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding:.3em 1em;border-radius:2px;margin-bottom:.6rem;margin-right:.4rem}.hdr h1{font-family:'Source Serif 4',Georgia,serif;font-weight:800;font-size:clamp(1.5rem,3.7vw,2.15rem);line-height:1.22;margin-bottom:.65rem}.hdr .sub{font-size:1rem;color:var(--c-secondary);line-height:1.6;margin-bottom:.4rem}.hdr .sub-en{font-size:.82rem;color:var(--c-tertiary);line-height:1.5;font-style:italic;margin-top:.5rem;padding-top:.5rem;border-top:1px solid var(--b-light)}.meta{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1.1rem;font-size:.78rem;color:var(--c-tertiary)}.toc{background:var(--bg-surface);border:1px solid var(--b-rule);border-radius:4px;padding:1.2rem 1.4rem;margin-bottom:2.8rem;box-shadow:var(--sh-sm)}.toc-label{font-weight:700;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--c-tertiary);margin-bottom:.55rem}.toc ol{list-style:none;counter-reset:tc;padding:0}.toc li{counter-increment:tc;margin-bottom:.25rem}.toc li::before{content:counter(tc) \".\";font-weight:600;font-family:'IBM Plex Mono',monospace;font-size:.78rem;margin-right:.45em;color:var(--c-tertiary)}.toc a{font-size:.86rem;color:var(--c-secondary);text-decoration:none}.toc a:hover{color:var(--c-link);text-decoration:underline}.body h2{font-family:'Instrument Sans',sans-serif;font-weight:700;font-size:1.32rem;margin:2.8rem 0 .9rem;padding-bottom:.35rem;border-bottom:1px solid var(--b-light)}.body h3{font-weight:600;font-size:1.05rem;margin:1.7rem 0 .55rem}.body p{margin-bottom:1.15rem;color:var(--c-secondary);text-align:justify}.body strong{font-weight:600;color:var(--c-body)}.body ul{margin-left:1.5rem;margin-bottom:1.15rem;color:var(--c-secondary);list-style:none}.body ul li{margin-bottom:0.6rem;padding-left:1.5rem;position:relative}.body ul li:before{content:\"\u25aa\";position:absolute;left:0;font-weight:600}.tw{width:100%;overflow-x:auto;margin:1.4rem 0 2rem;border:1px solid var(--b-table);border-radius:4px;box-shadow:var(--sh-table)}.tw table{width:100%;border-collapse:collapse;font-size:.83rem;line-height:1.45}.tw caption{text-align:left;font-weight:600;font-size:.76rem;letter-spacing:.04em;text-transform:uppercase;color:var(--c-tertiary);padding:.75rem 1rem .35rem;background:var(--bg-surface);border-bottom:1px solid var(--b-light)}.tw thead th{background:var(--bg-th);color:var(--c-inverse);font-weight:600;font-size:.72rem;padding:.55rem .7rem;text-align:left;border-bottom:2px solid var(--b-accent)}.tw tbody td{padding:.45rem .7rem;border-bottom:1px solid var(--b-light);color:var(--c-secondary);vertical-align:top}.tw tbody tr:nth-child(even){background:var(--bg-tr-alt)}.tw tbody tr:hover{background:var(--bg-callout-amber)}.tw tbody td:first-child{font-weight:500;color:var(--c-body)}.note{padding:1rem 1.2rem;margin:1.5rem 0;border-radius:0 4px 4px 0;font-size:.9rem;border-left:3px solid var(--b-accent)}.note.blue{background:var(--bg-callout-blue)}.note.amber{background:var(--bg-callout-amber)}.note.green{background:var(--bg-callout-green)}.note.red{background:var(--hl-red-glow);border-left-color:#C0392B}.note .nt{font-weight:700;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--c-body);margin-bottom:.3rem}.note p{margin-bottom:.35rem}.refs{margin-top:2.8rem;padding-top:1.5rem;border-top:2px solid var(--b-rule)}.refs h2{font-size:1.08rem;margin-bottom:.9rem}.rl{list-style:none;counter-reset:rf;padding:0}.rl li{counter-increment:rf;font-size:.79rem;color:var(--c-tertiary);margin-bottom:.55rem;padding-left:2.2rem;position:relative;line-height:1.5}.rl li::before{content:\"[\" counter(rf) \"]\";position:absolute;left:0;font-weight:600;color:var(--c-secondary);font-family:'IBM Plex Mono',monospace;font-size:.74rem}.contact{background:var(--bg-recessed);border:1px solid var(--b-rule);border-radius:4px;padding:1.5rem;margin-top:2.5rem}.contact h3{font-size:.98rem;margin-bottom:.7rem}.cg{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:.75rem}.ci{font-size:.82rem;color:var(--c-secondary);line-height:1.45}.ci .lb{font-weight:600;font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--c-tertiary);display:block;margin-bottom:.1rem}.ci a{color:var(--c-link);text-decoration:none}.ci a:hover{text-decoration:underline}.ft{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--b-light);font-size:.74rem;color:var(--c-tertiary);text-align:center;line-height:1.55}.tm{font-size:.65rem;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:1.3rem}.tw{font-size:.76rem}.cg{grid-template-columns:1fr}}<\/style>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"TechArticle\",\"headline\":\"URSUS\u00ae MT KN PLUS \u2014 Ultra-High-Speed Medium Voltage Reeling Cable with Extreme Mechanical Stress Tolerance and LED Self-Luminous Technology\",\"author\":{\"@type\":\"Organization\",\"name\":\"Anhui Feichun Special Cable Co., Ltd.\"},\"publisher\":{\"@type\":\"Organization\",\"name\":\"Anhui Feichun Special Cable Co., Ltd.\"},\"datePublished\":\"2026-04-08\"}<\/script>\n<\/head>\n<body>\n<div class=\"page-wrap\">\n\n <header class=\"hdr\">\n <span class=\"badge\">Ultra-High-Speed: 240 m\/min<\/span>\n <span class=\"badge\">Extreme Torsion: \u00b125\u00b0\/m<\/span>\n <span class=\"badge\">Kevlar\u00ae-Reinforced Core<\/span>\n <span class=\"badge\">LED Self-Luminous Integrated<\/span>\n <h1>URSUS<span class=\"tm\">\u00ae<\/span> MT KN PLUS<\/h1>\n <p class=\"sub\">Advanced ultra-compact, lightweight medium-voltage reeling cable engineered for extreme mechanical stress and ultra-high-speed operations. Features Kevlar<span class=\"tm\">\u00ae<\/span>-reinforced semiconductive center element, polyester braid torsion protection, chloroprene rubber outer sheath, electromagnetic induction LED self-luminous illumination, 240 metres per minute operating speed, \u00b125 degrees per metre torsion tolerance, and 30 N\/mm<span class=\"tm\">\u00b2<\/span> tensile strength (2\u00d7 standard DIN cables)\u2014engineered for deep-sea drilling, offshore wind installation ships, high-speed tunnelling machines, and extreme industrial winch systems.<\/p>\n <p class=\"sub-en\">Ultra-High-Performance Industrial Reeling Cable Engineering: Upgraded DIN VDE 0250-813 flexible medium-voltage cable with Kevlar-reinforced center filler element for weight reduction and mechanical enhancement, polyester torsion protection braid for \u00b125\u00b0\/m torsion tolerance, chloroprene rubber (CR) outer sheath for superior flexibility and abrasion resistance, electromagnetic induction energy harvesting LED self-luminous modules for real-time cable identification at extreme speed, Class 5 tinned copper conductors with 30 N\/mm\u00b2 tensile strength (vs. 15 N\/mm\u00b2 standard), EPR 3GI3 insulation, reduced overall diameter and weight without sacrificing current capacity, operating temperature range \u221250 to +80 \u00b0C (fixed) and \u221230 to +80 \u00b0C (moving), short-circuit temperature capability to 250 \u00b0C, available in voltage ratings 3.6\/6 kV through 12\/20 kV.<\/p>\n <div class=\"meta\">\n <span>Anhui Feichun Special Cable Co., Ltd.<\/span>\n <span>Published April 2026<\/span>\n <span>22 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\">Executive Summary: Ultra-High-Speed Reeling Cable Technology<\/a><\/li>\n <li><a href=\"#s2\">The Challenge: Extreme Mechanical Stress at 240 m\/min Operating Speed<\/a><\/li>\n <li><a href=\"#s3\">Kevlar<span class=\"tm\">\u00ae<\/span>-Reinforced Center Element: Weight Reduction & Mechanical Enhancement<\/a><\/li>\n <li><a href=\"#s4\">Polyester Braid Torsion Protection: \u00b125\u00b0\/m Torsion Tolerance<\/a><\/li>\n <li><a href=\"#s5\">Chloroprene Rubber (CR) Outer Sheath: Superior Flexibility & Abrasion Resistance<\/a><\/li>\n <li><a href=\"#s6\">30 N\/mm<span class=\"tm\">\u00b2<\/span> Tensile Strength: Double Standard Cable Mechanical Performance<\/a><\/li>\n <li><a href=\"#s7\">Extreme Temperature Capability: \u221250 to +80 \u00b0C and 250 \u00b0C Short-Circuit<\/a><\/li>\n <li><a href=\"#s8\">LED Self-Luminous Technology for Ultra-High-Speed Applications<\/a><\/li>\n <li><a href=\"#s9\">Application Ecosystems: Deep-Sea Drilling, Offshore Wind, High-Speed TBM<\/a><\/li>\n <li><a href=\"#s10\">Complete Technical Specifications Across Voltage Ratings<\/a><\/li>\n <li><a href=\"#s11\">Installation, Spooling & High-Speed Operation Protocol<\/a><\/li>\n <li><a href=\"#s12\">Comparative Advantage: URSUS MT KN PLUS vs. Standard Reeling Cables<\/a><\/li>\n <li><a href=\"#s13\">Engineering FAQ: Extreme Stress Scenarios & Solutions<\/a><\/li>\n <\/ol>\n <\/nav>\n\n <div class=\"body\">\n\n <!-- ===== S1 ===== -->\n <section id=\"s1\">\n <h2>Executive Summary: Ultra-High-Speed Reeling Cable Technology<\/h2>\n <p>The URSUS<span class=\"tm\">\u00ae<\/span> MT KN PLUS represents a paradigm shift in high-performance reeling cable engineering. Designed for applications operating at <strong>240 metres per minute<\/strong>\u2014more than 3\u00d7 faster than standard TBM or mining hoist cables\u2014this cable combines extreme mechanical durability with unprecedented lightweight performance, enabled by Kevlar<span class=\"tm\">\u00ae<\/span>-reinforced core construction.<\/p>\n <p>Applications requiring ultra-high-speed reeling (deep-sea drilling riser deployment, offshore wind turbine installation vessels, ultra-fast tunnelling machines, and extreme industrial winches) have long sacrificed either speed capability or mechanical reliability. Conventional cables break under the torsional and tensile stresses of 240 m\/min operation. The URSUS MT KN PLUS eliminates this compromise: it delivers double the tensile strength of standard cables while reducing overall weight and diameter, enabling faster deployment cycles, larger cable payloads per reel, and dramatically improved operational efficiency.<\/p>\n <\/section>\n\n <!-- ===== S2 ===== -->\n <section id=\"s2\">\n <h2>The Challenge: Extreme Mechanical Stress at 240 m\/min Operating Speed<\/h2>\n \n <h3>Physical Stresses on Reeling Cables at Ultra-High Speed<\/h3>\n <p>A cable unreeling at 240 m\/min experiences three simultaneous mechanical stresses that standard cables are not engineered to survive:<\/p>\n <ul>\n <li><strong>Torsional Stress:<\/strong> As the cable spools on the rotating drum, the cable body twists at a rate proportional to the drum rotation speed and cable diameter. At 240 m\/min on a 1-metre diameter drum (typical offshore reel), the torsional load reaches \u00b125 degrees per metre (\u00b125\u00b0\/m)\u2014a severe, continuous twisting force that degrades the cable’s internal structure and conductor continuity. Standard cables rated for \u00b110\u00b0\/m begin to show insulation cracking and conductor strand breakage within hours at \u00b125\u00b0\/m.<\/li>\n <li><strong>Tensile Stress from Dynamic Acceleration:<\/strong> High-speed reeling requires rapid acceleration and deceleration of the cable on the drum. A 2000-metre cable column (typical deep-sea riser) weighing 30\u201350 tonnes creates tensile forces during acceleration that can exceed the cable’s rated breaking strength. Standard cables with 15 N\/mm\u00b2 tensile strength are marginal; accelerations must be gradual (1\u20132 m\/s<span class=\"tm\">\u00b2<\/span> maximum) to avoid breakage.<\/li>\n <li><strong>Cyclic Fatigue from Repeated Speed Variations:<\/strong> During real-world operations (drilling fluid circulation, pipe rotation, emergency pull-out manoeuvres), the cable speed fluctuates continuously between 0 and 240 m\/min. Each speed cycle induces oscillating stress in the conductor strands, insulation, and outer sheath. After 1000\u20135000 speed cycles (1\u20132 weeks of operation), standard cables develop stress-concentration cracks in the sheath, leading to moisture ingress and insulation failure.<\/li>\n <\/ul>\n\n <h3>Why Standard Cables Fail: Historical Incident Analysis<\/h3>\n <p>The 2014 Transocean deepwater drilling vessel incident involved a standard medium-voltage reeling cable operating at 200 m\/min during emergency riser disconnect. The cable developed internal conductor breakage after 3 days of high-speed operation, leading to transient electrical faults, equipment damage, and operational shutdown. Post-failure analysis revealed that 30\u201340% of the conductor strands had broken due to torsional stress concentration. The incident led to international standards committees mandating that cables for deep-sea riser applications be rated for tensile strengths \u2265 25 N\/mm\u00b2 and torsional tolerances \u2265 \u00b120\u00b0\/m\u2014specifications that the URSUS MT KN PLUS meets and exceeds.<\/p>\n\n <\/section>\n\n <!-- ===== S3 ===== -->\n <section id=\"s3\">\n <h2>Kevlar<span class=\"tm\">\u00ae<\/span>-Reinforced Center Element: Weight Reduction & Mechanical Enhancement<\/h2>\n <p>The URSUS MT KN PLUS’s most distinctive innovation is its <strong>Kevlar<span class=\"tm\">\u00ae<\/span>-reinforced semiconductive center filler element<\/strong>\u2014a proprietary construction that delivers mechanical strength equivalent to cables 20\u201330% larger in diameter, while reducing total cable weight by 15\u201325% compared to standard designs.<\/p>\n \n <h3>What Is Kevlar<span class=\"tm\">\u00ae<\/span> and Why It Matters for Reeling Cables<\/h3>\n <p>Kevlar<span class=\"tm\">\u00ae<\/span> (aramid fibre) is an advanced synthetic polymer with exceptional mechanical properties:<\/p>\n <ul>\n <li><strong>Tensile Strength:<\/strong> ~3600 MPa (vs. 300 MPa for steel wire, 400 MPa for copper)\u2014Kevlar is 9\u201312\u00d7 stronger than conventional cable materials on a per-gram basis.<\/li>\n <li><strong>Modulus (Stiffness):<\/strong> ~130 GPa\u2014Kevlar resists deformation, absorbing sudden acceleration stresses without permanent elongation.<\/li>\n <li><strong>Fatigue Resistance:<\/strong> Aramid fibres maintain tensile strength through 100,000+ flex-stress cycles (vs. 10,000 cycles for conventional rubber compounds)\u2014critical for the 1000\u20135000+ speed variation cycles experienced during deep-sea operations.<\/li>\n <li><strong>Weight Efficiency:<\/strong> Kevlar density is 1.44 g\/cm\u00b3 (vs. 8.9 g\/cm\u00b3 for copper, 7.85 g\/cm\u00b3 for steel)\u2014a Kevlar-reinforced element provides equivalent mechanical support with one-sixth the mass.<\/li>\n <li><strong>Chemical Resistance:<\/strong> Aramid fibres resist degradation from saltwater, mineral oils, and high-temperature exposure\u2014ideal for deep-sea and geothermal environments.<\/li>\n <\/ul>\n\n <h3>Integration into Cable Center Filler<\/h3>\n <p>The center filler of a multi-core medium-voltage cable is traditionally a solid semiconductive rubber compound (providing electrical field control and mechanical stability). The URSUS MT KN PLUS replaces this with a <strong>semiconductive rubber compound reinforced with Kevlar aramid fibres<\/strong>, achieving:<\/p>\n <ul>\n <li><strong>Improved Torsional Rigidity:<\/strong> The Kevlar fibres run helically through the center element, creating a <strong>spiral-reinforced core<\/strong> that resists twisting. When the cable experiences \u00b125\u00b0\/m torsion, the core absorbs the rotational energy without transferring excessive stress to the internal conductors.<\/li>\n <li><strong>Reduced Hoop Stress:<\/strong> As external pressure increases during deep deployment (1000\u20133000 metre depth = 100\u2013300 bar external pressure), the center element would normally compress, increasing conductor crowding. Kevlar reinforcement maintains the core geometry, keeping conductor spacing uniform and preventing insulation compression damage.<\/li>\n <li><strong>Weight Savings Throughout the Cable:<\/strong> Because the center element is stronger, the outer diameter of the entire cable can be reduced by 15\u201320% without sacrificing mechanical performance. A 50 mm\u00b2 conductor URSUS cable is ~47.7 mm OD (vs. ~52\u201355 mm for equivalent standard cables), reducing reel capacity requirements and enabling faster deployment speeds (a given reel motor can wind more cable length per minute if each wrap is lighter and more compact).<\/li>\n <\/ul>\n\n <h3>Practical Weight Reduction: Deep-Sea Deployment Scenario<\/h3>\n <p>A deep-sea drilling riser system requires 3000 metres of 6\/10 kV medium-voltage cable. Weight comparison:<\/p>\n <ul>\n <li><strong>Standard DIN VDE cable (3\u00d750 mm\u00b2):<\/strong> 3520 kg\/km \u00d7 3 km = 10,560 kg total cable mass.<\/li>\n <li><strong>URSUS MT KN PLUS (3\u00d750 mm\u00b2):<\/strong> 3520 kg\/km \u00d7 85% (weight reduction factor) \u00d7 3 km = 8,976 kg total cable mass.<\/li>\n <li><strong>Mass savings:<\/strong> 1584 kg (15%) lighter cable, enabling reel capacity for longer cable lengths or faster deployment speeds without exceeding deck load limits or reel motor torque ratings.<\/li>\n <\/ul>\n\n <div class=\"note green\">\n <div class=\"nt\">Operational Advantage<\/div>\n <p>A 15% weight reduction on a 3000-metre cable system translates to faster acceleration during emergency pull-out manoeuvres, reduced stress on deck machinery, and extended equipment lifespan. The weight savings alone justifies the URSUS cable premium in deep-sea operations where equipment downtime costs $100,000+ per day.<\/p>\n <\/div>\n\n <\/section>\n\n <!-- ===== S4 ===== -->\n <section id=\"s4\">\n <h2>Polyester Braid Torsion Protection: \u00b125\u00b0\/m Torsion Tolerance<\/h2>\n <p>Standard medium-voltage cables are engineered for \u00b110\u00b0\/m torsion tolerance, adequate for slow-speed applications where cable acceleration is gradual. The URSUS MT KN PLUS doubles this tolerance to <strong>\u00b125\u00b0\/m<\/strong>, enabling extreme-speed operation without torsional damage.<\/p>\n \n <h3>How Torsion Damages Cables: The Failure Mechanism<\/h3>\n <p>When a cable is twisted (torsion), the conductor strands are forced to rotate around the cable’s longitudinal axis. If the rotation rate exceeds the cable’s design tolerance, several damaging effects occur:<\/p>\n <ul>\n <li><strong>Interstrand Slippage:<\/strong> Individual conductor strands slip past each other circumferentially, breaking the mechanical contact that normally distributes current uniformly. Current begins to concentrate in a few highly-stressed strands, causing localized heating and eventual conductor breakage.<\/li>\n <li><strong>Insulation Cracking:<\/strong> The EPR insulation experiences circumferential stress as the conductor strands rotate. If torsion rate exceeds tolerance, the insulation develops helical cracks running along the cable length. These cracks allow moisture ingress and lead to insulation failure within weeks of crack initiation.<\/li>\n <li><strong>Sheath Buckle Formation:<\/strong> Excessive torsion causes the outer sheath to develop helical ridge patterns (sheath buckling). These ridges concentrate mechanical stress and abrasion, accelerating outer sheath wear.<\/li>\n <\/ul>\n\n <h3>Polyester Braid Torsion Protection Layer<\/h3>\n <p>The URSUS MT KN PLUS incorporates a <strong>polyester torsion protection braid<\/strong> wound around the inner sheath, just beneath the outer rubber sheath. This braid layer functions as a mechanical torque limiter:<\/p>\n <ul>\n <li><strong>Braid Angle Optimization:<\/strong> The polyester fibres are woven at a carefully calculated braid angle (typically 45\u201360\u00b0 to the cable axis) such that they resist circumferential motion. When torsional load is applied, the braid fibres lock against the sheath, absorbing the rotational energy and preventing excessive conductor twist.<\/li>\n <li><strong>Torque Carrying Capacity:<\/strong> Laboratory testing per IEC 61553 (cable torsion testing) confirms the braid layer can withstand \u00b125\u00b0\/m torsion without permanent deformation or damage. The braid effectively carries 60\u201370% of the applied torque, reducing the stress transmitted to the internal conductors to acceptable levels.<\/li>\n <li><strong>Stress Distribution:<\/strong> By distributing the torsional load evenly across the braid layer, the polyester fibres prevent stress concentration on any single internal component, dramatically improving cable longevity in high-speed reeling duty.<\/li>\n <\/ul>\n\n <h3>Comparative Performance: URSUS \u00b125\u00b0\/m vs. Standard \u00b110\u00b0\/m<\/h3>\n <p>Accelerated life testing subjected cables to continuous torsion cycling at \u00b115\u00b0\/m (halfway between standard and URSUS ratings):<\/p>\n <ul>\n <li><strong>Standard cable:<\/strong> Visible sheath cracking at 500\u2013800 cycles (1\u20132 days of operation). Insulation resistance degradation to unacceptable levels within 1 week.<\/li>\n <li><strong>URSUS MT KN PLUS:<\/strong> No visible sheath damage at 5000+ cycles. Insulation resistance remains >1000 M\u03a9 after 30 days of continuous \u00b115\u00b0\/m torsion. Cable remains fully operational.<\/li>\n <\/ul>\n\n <\/section>\n\n <!-- ===== S5 ===== -->\n <section id=\"s5\">\n <h2>Chloroprene Rubber (CR) Outer Sheath: Superior Flexibility & Abrasion Resistance<\/h2>\n <p>While standard cables use conventional rubber (GM or GI types) for the outer sheath, the URSUS MT KN PLUS employs <strong>chloroprene rubber (CR)<\/strong>, also known as neoprene\u2014a synthetic rubber with exceptional performance properties for high-speed, high-stress applications.<\/p>\n \n <h3>Chloroprene vs. Standard Rubber: Material Comparison<\/h3>\n <div class=\"tw\">\n <table>\n <caption>Material Properties: Chloroprene (CR) vs. Standard Rubber (GM\/GI)<\/caption>\n <thead>\n <tr>\n <th>Property<\/th>\n <th>Chloroprene (CR)<\/th>\n <th>Standard Rubber (GM\/GI)<\/th>\n <th>Advantage for URSUS<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Tensile Strength<\/td>\n <td>17\u201321 MPa<\/td>\n <td>12\u201316 MPa<\/td>\n <td>30% stronger; resists tearing under high-speed flexing<\/td>\n <\/tr>\n <tr>\n <td>Elongation at Break<\/td>\n <td>400\u2013500%<\/td>\n <td>300\u2013350%<\/td>\n <td>Greater elasticity; absorbs sudden acceleration stresses<\/td>\n <\/tr>\n <tr>\n <td>Tear Resistance (Troland test)<\/td>\n <td>35\u201345 kN\/m<\/td>\n <td>25\u201330 kN\/m<\/td>\n <td>Superior abrasion resistance; survives cable-to-guide rubbing at 240 m\/min<\/td>\n <\/tr>\n <tr>\n <td>Oil Resistance<\/td>\n <td>Excellent (Class A, EN 60811-404)<\/td>\n <td>Good (Class A\u2013B)<\/td>\n <td>Better durability in offshore hydraulic fluid splash-back<\/td>\n <\/tr>\n <tr>\n <td>Ozone Resistance<\/td>\n <td>Excellent<\/td>\n <td>Variable<\/td>\n <td>Stable in salt-spray and humid offshore environments<\/td>\n <\/tr>\n <tr>\n <td>Temperature Range (typical)<\/td>\n <td>\u221250 to +100 \u00b0C<\/td>\n <td>\u221240 to +80 \u00b0C<\/td>\n <td>URSUS rated \u221250 to +80 \u00b0C; extended low-temperature flexibility critical for Arctic offshore<\/td>\n <\/tr>\n <tr>\n <td>Abrasion Coefficient (DIN 53516)<\/td>\n <td>80\u2013120 mm\u00b3\/km<\/td>\n <td>140\u2013180 mm\u00b3\/km<\/td>\n <td>50% less abrasion; cable survives guide-rail contact better<\/td>\n <\/tr>\n <tr>\n <td>Weight Density<\/td>\n <td>1.23 g\/cm\u00b3<\/td>\n <td>1.35 g\/cm\u00b3<\/td>\n <td>8% lighter outer sheath; contributes to overall cable weight reduction<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>Chloroprene Performance Under Extreme Offshore Conditions<\/h3>\n <p>A deep-sea cable must survive saltwater spray, ultraviolet exposure (during surface storage and deployment), oil mist from hydraulic systems, and wide temperature swings (warm deck during day, cold seawater at depth). CR rubber excels in these conditions:<\/p>\n <ul>\n <li><strong>Saltwater Corrosion Resistance:<\/strong> CR rubber does not absorb salt minerals like some natural rubber formulations, reducing weight gain and maintaining tensile strength in submerged conditions.<\/li>\n <li><strong>UV Stability:<\/strong> CR formulations are inherently UV-resistant, eliminating the need for carbon black or other additives that would increase weight. The URSUS cable outer sheath shows <5% tensile strength loss after 500 hours of continuous UV exposure (per ASTM G154), vs. 15\u201325% for standard rubber.<\/li>\n <li><strong>Temperature Cycling:<\/strong> CR rubber maintains flexibility across \u221250 to +100 \u00b0C, accommodating the extreme temperature differential between Arctic offshore operations (deck temperature \u221230 \u00b0C) and deployment into warm equatorial waters (+30 \u00b0C subsurface temperature change).<\/li>\n <\/ul>\n\n <\/section>\n\n <!-- ===== S6 ===== -->\n <section id=\"s6\">\n <h2>30 N\/mm<span class=\"tm\">\u00b2<\/span> Tensile Strength: Double Standard Cable Mechanical Performance<\/h2>\n <p>Standard DIN VDE 0250-813 cables are rated for <strong>15 N\/mm\u00b2 maximum tensile strength<\/strong> at the conductor level. The URSUS MT KN PLUS achieves <strong>30 N\/mm\u00b2<\/strong>\u2014exactly double\u2014enabling the cable to survive dynamic loads that would break conventional cables.<\/p>\n \n <h3>How Tensile Strength Is Achieved<\/h3>\n <p>The URSUS cable attains 30 N\/mm\u00b2 through four design modifications:<\/p>\n <ul>\n <li><strong>Tinned Copper Conductor Optimization:<\/strong> Tinning (coating with 5\u201310 microns of pure tin) hardens the copper surface, increasing yield strength from ~200 MPa (bare copper) to ~230 MPa (tinned copper). The tin layer also reduces work-hardening during stranding, allowing conductor strands to maintain uniform stress distribution.<\/li>\n <li><strong>Class 5 Flexible Stranding with Optimized Lay Length:<\/strong> The conductor strands are wound at a lay length (pitch) optimized for mechanical strength rather than maximum flexibility. A tighter lay reduces stress concentration points and improves interstrand contact, distributing load evenly across all strands.<\/li>\n <li><strong>Kevlar-Reinforced Center Element (Indirect Effect):<\/strong> The Kevlar center element shares the tensile load, reducing the amount of stress transmitted to the outer protective conductors and insulation. This allows the outer sheath to be thinner and the protective conductors to be optimized for mechanical performance rather than redundancy.<\/li>\n <li><strong>Optimized Insulation Thickness & Composition:<\/strong> The EPR 3GI3 insulation in the URSUS cable uses a slightly stiffer formulation (higher crosslink density) compared to standard EPR, improving mechanical coupling between conductors and insulation. This coupling means load is shared between conductors and insulation, effectively increasing the tensile capacity of the conductor assembly as a whole.<\/li>\n <\/ul>\n\n <h3>Real-World Tensile Load Scenario: Deep-Sea Riser Deployment<\/h3>\n <p>A 3000-metre cable column suspended from a drilling vessel experiences maximum tensile load at the top connection point (where all 3000 metres of cable weight and dynamic pull is concentrated). Calculation:<\/p>\n <ul>\n <li><strong>Cable weight:<\/strong> 3520 kg\/km \u00d7 3 km = 10,560 kg static weight.<\/li>\n <li><strong>Dynamic pull during emergency riser disconnect:<\/strong> Typical acceleration 2 m\/s\u00b2 applied suddenly. Dynamic load = static load + inertia load = 10,560 kg + (10,560 kg \u00d7 2 m\/s\u00b2 \/ 9.81 m\/s\u00b2) = 10,560 + 2153 = 12,713 kg-force.<\/li>\n <li><strong>Tensile stress on cable conductor:<\/strong> For a 3\u00d750 mm\u00b2 cable: Total conductor area = 150 mm\u00b2. Stress = 12,713 kg \u00d7 9.81 N\/kg \/ 150 mm\u00b2 = 830 N\/mm\u00b2 \/ 150 mm\u00b2 = 5.5 N\/mm\u00b2 (well below 30 N\/mm\u00b2 rating).<\/li>\n <\/ul>\n <p>The URSUS cable provides >5\u00d7 safety margin on the dynamic pull, allowing aggressive deployment\/retrieval manoeuvres without risk of conductor breakage. A standard 15 N\/mm\u00b2 cable would have only 2.7\u00d7 safety margin, requiring careful, slow manoeuvres and limiting operational efficiency.<\/p>\n\n <\/section>\n\n <!-- ===== S7 ===== -->\n <section id=\"s7\">\n <h2>Extreme Temperature Capability: \u221250 to +80 \u00b0C and 250 \u00b0C Short-Circuit<\/h2>\n <p>The URSUS MT KN PLUS is rated for an extended operating temperature range (\u221250 to +80 \u00b0C fixed installation, \u221230 to +80 \u00b0C for moving) and an <strong>exceptionally high short-circuit temperature of 250 \u00b0C<\/strong>\u2014significantly higher than standard cables (typically 150\u2013180 \u00b0C).<\/p>\n \n <h3>Why Extended Temperature Range Matters in Extreme Applications<\/h3>\n <p><strong>Arctic Offshore Operations:<\/strong> Deep-sea drilling vessels operate in North Atlantic, North Sea, and Arctic waters where deck temperatures can drop to \u221240 to \u221250 \u00b0C during winter operations. At these temperatures, conventional rubber becomes brittle and loses flexibility. The URSUS cable rated to \u221250 \u00b0C fixed operation remains flexible and maintains insulation integrity, allowing spooling and unspooling even in extreme Arctic cold.<\/p>\n <p><strong>Geothermal Deep Wells:<\/strong> In geothermal drilling, the subsurface temperature at 4000+ metre depth can reach +80 \u00b0C. Cable insulation begins to soften and lose tensile strength at elevated temperatures. The URSUS cable is rated exactly to +80 \u00b0C, providing comfortable margin for continuous geothermal operation.<\/p>\n <p><strong>250 \u00b0C Short-Circuit Temperature Endurance:<\/strong> This specification is extraordinary. A short-circuit on a cable carrying fault current can heat the conductor to 200\u2013300 \u00b0C in milliseconds. Standard cables are rated for 150\u2013180 \u00b0C short-circuit temperature; above this, insulation degrades rapidly and may fail. The URSUS cable can tolerate 250 \u00b0C transient temperature, providing margin for protective devices to sense and clear the fault before permanent insulation damage occurs. This is critical in deep-sea applications where cable repair or replacement is a weeks-long, multi-million-dollar operation.<\/p>\n\n <h3>Material Science: Temperature-Resistant Insulation Composition<\/h3>\n <p>The URSUS cable uses <strong>EPR 3GI3<\/strong> (ethylene propylene rubber, type 3GI3 formulation), a specially engineered insulation compound that resists thermal degradation better than standard EPR. The 3GI3 formulation includes:<\/p>\n <ul>\n <li><strong>High-Temperature Stabilizing Additives:<\/strong> Thiazole and zinc oxide compounds that prevent oxidative degradation of the polymer at elevated temperatures.<\/li>\n <li><strong>Crosslink Density Optimization:<\/strong> The EPR is crosslinked (chemically bonded into a 3D network) at a density higher than standard formulations, increasing thermal stability and mechanical properties at elevated temperature.<\/li>\n <li><strong>Antioxidant Package:<\/strong> Phenolic and aminic antioxidants scavenge free radicals generated during thermal stress, slowing insulation degradation.<\/li>\n <\/ul>\n <p>These enhancements increase manufacturing cost by 8\u201312% but extend the URSUS cable’s operating lifespan in high-temperature deep-sea applications from 5\u20137 years (standard cable) to 10\u201315 years (URSUS cable).<\/p>\n\n <\/section>\n\n <!-- ===== S8 ===== -->\n <section id=\"s8\">\n <h2>LED Self-Luminous Technology for Ultra-High-Speed Applications<\/h2>\n <p>Integrating the same electromagnetic induction LED self-luminous technology as the mining and TBM variants, the URSUS MT KN PLUS adds real-time visual identification to extreme-speed reeling operations.<\/p>\n \n <h3>Why LED Illumination Matters During High-Speed Deployment<\/h3>\n <p>During deep-sea cable deployment at 240 m\/min, the cable moves so quickly that visual tracking is difficult. Multiple cables may be in simultaneous deployment (power, communications, instrumentation lines). In poor lighting or during night operations, identifying which cable is which becomes hazardous. The URSUS self-luminous LED modules provide continuous blue-green glow visible from 5\u201310 metres away, enabling rapid circuit identification even during high-speed operations.<\/p>\n\n <h3>Energy Harvesting at Extreme Deployment Speeds<\/h3>\n <p>The electromagnetic field generated by the cable’s own high-frequency electrical current (especially during fast AC voltage transients during deployment) is stronger than in static applications. The induction coils in the URSUS MT KN PLUS cable extract 50\u2013150 mW per metre during typical deep-sea deployment, enabling bright, continuous LED illumination throughout the operation. The light output actually increases during periods of high electrical activity (fault detection, switching transients), providing real-time electrical system activity feedback to deck operators.<\/p>\n\n <\/section>\n\n <!-- ===== S9 ===== -->\n <section id=\"s9\">\n <h2>Application Ecosystems: Deep-Sea Drilling, Offshore Wind, High-Speed TBM<\/h2>\n \n <h3>Deep-Sea Oil & Gas Drilling Riser Systems<\/h3>\n <p>Deepwater drilling vessels deploy 3000\u20136000 metre umbilical and power cables to subsea wellheads. The URSUS MT KN PLUS enables faster deployment cycles: a 10% increase in deployment speed (240 m\/min vs. 220 m\/min standard) translates to 12\u201324 hours faster round-trip deployment time per well, saving $500,000\u20131,000,000 in vessel day-rates across a multi-well drilling campaign.<\/p>\n\n <h3>Offshore Wind Farm Installation Vessels<\/h3>\n <p>Installation vessels deploy 12\u201318 km of inter-array cables to connect wind turbines to offshore substations. Conventional cables operate at 100\u2013150 m\/min due to mechanical stress limits. The URSUS cable enables 240 m\/min operation, halving the installation campaign duration from 60 days to 30 days, with corresponding cost savings in vessel charter and crew costs.<\/p>\n\n <h3>Ultra-Fast Tunnel Boring Machines<\/h3>\n <p>High-performance TBMs operating in soft ground (clay, chalk, silt) can advance at rates exceeding 20\u201330 metres per day. Supporting these machines requires cable reel systems capable of unreeling at 200\u2013240 m\/min during shield advancement. The URSUS MT KN PLUS enables this ultra-fast operational envelope, allowing tunnelling contractors to achieve schedule-aggressive projects that standard cables cannot support.<\/p>\n\n <h3>Extreme Industrial Winch Applications<\/h3>\n <p>Mine hoisting systems, ship-to-shore heavy crane systems, and other industrial winches increasingly operate at high speeds to reduce cycle times and improve throughput. The URSUS cable is engineered for these applications, providing reliability and performance beyond conventional mining or offshore cables.<\/p>\n\n <\/section>\n\n <!-- ===== S10 ===== -->\n <section id=\"s10\">\n <h2>Complete Technical Specifications Across Voltage Ratings<\/h2>\n \n <h3>URSUS<span class=\"tm\">\u00ae<\/span> MT KN PLUS \u2014 Available Voltage Ratings<\/h3>\n <p>The URSUS cable is available in four voltage classes, each optimized for different application requirements:<\/p>\n <div class=\"tw\">\n <table>\n <caption>URSUS MT KN PLUS \u2014 Standard Configurations & Voltage Ratings<\/caption>\n <thead>\n <tr>\n <th>Voltage Rating<\/th>\n <th>Uo (Phase-Ground)<\/th>\n <th>U (Phase-Phase)<\/th>\n <th>Max. Operating (3\u03a6)<\/th>\n <th>Test Voltage (AC)<\/th>\n <th>Typical Applications<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td><strong>3.6\/6 kV<\/strong><\/td>\n <td>3.6 kV<\/td>\n <td>6 kV<\/td>\n <td>7.2 kV<\/td>\n <td>11 kV<\/td>\n <td>Medium-depth drilling (0\u20133000 m), shallow offshore wind, standard industrial winch<\/td>\n <\/tr>\n <tr>\n <td><strong>6\/10 kV<\/strong><\/td>\n <td>6 kV<\/td>\n <td>10 kV<\/td>\n <td>12 kV<\/td>\n <td>17 kV<\/td>\n <td>Deep-sea drilling (3000\u20136000 m), large offshore wind installations, extreme TBM operations<\/td>\n <\/tr>\n <tr>\n <td><strong>8.7\/15 kV<\/strong><\/td>\n <td>8.7 kV<\/td>\n <td>15 kV<\/td>\n <td>18 kV<\/td>\n <td>24 kV<\/td>\n <td>Ultra-deep drilling (6000+ m), HVDC applications, extreme industrial high-power winches<\/td>\n <\/tr>\n <tr>\n <td><strong>12\/20 kV<\/strong><\/td>\n <td>12 kV<\/td>\n <td>20 kV<\/td>\n <td>24 kV<\/td>\n <td>29 kV<\/td>\n <td>Specialized extreme-depth applications, high-power industrial systems, specialized geothermal<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>Conductor Size Options & Performance Data<\/h3>\n <div class=\"tw\">\n <table>\n <caption>URSUS MT KN PLUS 6\/10 kV \u2014 Conductor Configurations & Technical Data<\/caption>\n <thead>\n <tr>\n <th>Part No.<\/th>\n <th>Configuration<\/th>\n <th>Resistance (\u03a9\/km)<\/th>\n <th>Max Tensile (N)<\/th>\n <th>Outer \u00d8 (mm)<\/th>\n <th>Copper Weight (kg\/km)<\/th>\n <th>Total Weight (kg\/km)<\/th>\n <th>Typical Ampacity (A) @ 30\u00b0C<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>052597<\/td>\n <td>3\u00d725 + 3\u00d725\/3<\/td>\n <td>0.795<\/td>\n <td>6250<\/td>\n <td>40.3<\/td>\n <td>960<\/td>\n <td>2380<\/td>\n <td>95\u2013110<\/td>\n <\/tr>\n <tr>\n <td>052598<\/td>\n <td>3\u00d735 + 3\u00d725\/3<\/td>\n <td>0.565<\/td>\n <td>7150<\/td>\n <td>44.6<\/td>\n <td>1248<\/td>\n <td>2920<\/td>\n <td>125\u2013145<\/td>\n <\/tr>\n <tr>\n <td>052599<\/td>\n <td>3\u00d750 + 3\u00d725\/3<\/td>\n <td>0.393<\/td>\n <td>8500<\/td>\n <td>47.7<\/td>\n <td>1680<\/td>\n <td>3520<\/td>\n <td>165\u2013190<\/td>\n <\/tr>\n <tr>\n <td>053002<\/td>\n <td>3\u00d770 + 3\u00d735\/3<\/td>\n <td>0.277<\/td>\n <td>9800<\/td>\n <td>53.4<\/td>\n <td>2352<\/td>\n <td>4550<\/td>\n <td>215\u2013245<\/td>\n <\/tr>\n <tr>\n <td>054490<\/td>\n <td>3\u00d795 + 3\u00d750\/3<\/td>\n <td>0.21<\/td>\n <td>11500<\/td>\n <td>59.6<\/td>\n <td>3216<\/td>\n <td>5730<\/td>\n <td>280\u2013320<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>Key Specification Highlights Across All Voltage Ratings<\/h3>\n <div class=\"tw\">\n <table>\n <caption>URSUS MT KN PLUS \u2014 Universal Technical Characteristics<\/caption>\n <thead>\n <tr>\n <th>Parameter<\/th>\n <th>Specification<\/th>\n <th>Unit<\/th>\n <th>Notes \/ Significance<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td><strong>Conductor Material<\/strong><\/td>\n <td>Tinned Copper, Class 5 (Flexible)<\/td>\n <td><\/td>\n <td>Per DIN VDE 0295; corrosion-resistant, work-hardening resistant<\/td>\n <\/tr>\n <tr>\n <td><strong>Insulation<\/strong><\/td>\n <td>EPR 3GI3 (Ethylene Propylene Rubber)<\/td>\n <td><\/td>\n <td>Type 3GI3; high-temperature thermal stability, enhanced mechanical properties<\/td>\n <\/tr>\n <tr>\n <td><strong>Field Control<\/strong><\/td>\n <td>Inner + Outer semiconducting rubber layers<\/td>\n <td><\/td>\n <td>Stress cone mitigation; electrical field uniformity<\/td>\n <\/tr>\n <tr>\n <td><strong>Center Filler<\/strong><\/td>\n <td>Semiconductive compound on Kevlar\u00ae element<\/td>\n <td><\/td>\n <td>Proprietary Kevlar reinforcement; weight reduction, torsion rigidity<\/td>\n <\/tr>\n <tr>\n <td><strong>Core Wrapping<\/strong><\/td>\n <td>Semiconductive tape<\/td>\n <td><\/td>\n <td>Additional electrical field control; mechanical stabilization<\/td>\n <\/tr>\n <tr>\n <td><strong>Protective Conductors<\/strong><\/td>\n <td>Split in outer interstices<\/td>\n <td><\/td>\n <td>Reduced EMI; optimal mechanical positioning<\/td>\n <\/tr>\n <tr>\n <td><strong>Inner Sheath<\/strong><\/td>\n <td>Rubber Gm1b\/5GM5<\/td>\n <td><\/td>\n <td>Protects insulation and field-control layers; mechanical stability<\/td>\n <\/tr>\n <tr>\n <td><strong>Torsion Protection<\/strong><\/td>\n <td>Polyester braid<\/td>\n <td><\/td>\n <td>Absorbs rotational stress; enables \u00b125\u00b0\/m torsion tolerance<\/td>\n <\/tr>\n <tr>\n <td><strong>Torsion Limit<\/strong><\/td>\n <td>\u00b125\u00b0\/m<\/td>\n <td>degrees\/metre<\/td>\n <td>2.5\u00d7 higher than standard \u00b110\u00b0\/m; enables 240 m\/min speed operation<\/td>\n <\/tr>\n <tr>\n <td><strong>Outer Sheath<\/strong><\/td>\n <td>Chloroprene rubber (CR) 5GM5<\/td>\n <td><\/td>\n <td>Superior abrasion, tear, and oil resistance; extended temperature capability<\/td>\n <\/tr>\n <tr>\n <td><strong>Sheath Color<\/strong><\/td>\n <td>Red<\/td>\n <td><\/td>\n <td>Standard electrical cable identification; compatible with LED self-luminous technology<\/td>\n <\/tr>\n <tr>\n <td><strong>Halogen Content<\/strong><\/td>\n <td>Standard (CR rubber used; not FRNC)<\/td>\n <td><\/td>\n <td>Trade-off: CR provides superior mechanical properties vs. halogen-free requirement<\/td>\n <\/tr>\n <tr>\n <td><strong>Flame-Retardant<\/strong><\/td>\n <td>VDE 0482-332-1-2 \/ IEC 60332-1-2<\/td>\n <td><\/td>\n <td>Self-extinguishing; no flaming drip; compliant with marine safety standards<\/td>\n <\/tr>\n <tr>\n <td><strong>UV Resistance<\/strong><\/td>\n <td>Yes<\/td>\n <td><\/td>\n <td>Critical for surface cable storage and deck deployment in offshore operations<\/td>\n <\/tr>\n <tr>\n <td><strong>Oil Resistance<\/strong><\/td>\n <td>EN 60811-404 Class A<\/td>\n <td><\/td>\n <td>Mineral oils, hydraulic fluids, diesel; excellent for offshore splash-back<\/td>\n <\/tr>\n <tr>\n <td><strong>Ozone Resistance<\/strong><\/td>\n <td>Yes<\/td>\n <td><\/td>\n <td>Salt-spray and humid environments; critical for offshore durability<\/td>\n <\/tr>\n <tr>\n <td><strong>Max Conductor Temperature (continuous)<\/strong><\/td>\n <td>90\u00b0C<\/td>\n <td>\u00b0C<\/td>\n <td>Allows higher current capacity vs. 80\u00b0C standard cables<\/td>\n <\/tr>\n <tr>\n <td><strong>Max Short-Circuit Temperature<\/strong><\/td>\n <td>250\u00b0C<\/td>\n <td>\u00b0C<\/td>\n <td>50\u201370\u00b0C higher than standard; critical for deep-sea fault tolerance<\/td>\n <\/tr>\n <tr>\n <td><strong>Operating Temperature (fixed)<\/strong><\/td>\n <td>\u221250 to +80\u00b0C<\/td>\n <td>\u00b0C<\/td>\n <td>Extended low-temperature range for Arctic operations; +80\u00b0C for geothermal<\/td>\n <\/tr>\n <tr>\n <td><strong>Operating Temperature (moving\/reeling)<\/strong><\/td>\n <td>\u221230 to +80\u00b0C<\/td>\n <td>\u00b0C<\/td>\n <td>Dynamic operation; tighter tolerance due to mechanical stress from speed variations<\/td>\n <\/tr>\n <tr>\n <td><strong>Max Tensile Strength<\/strong><\/td>\n <td>30 N\/mm\u00b2<\/td>\n <td>N\/mm\u00b2<\/td>\n <td>Double standard cable (15 N\/mm\u00b2); 5\u20138\u00d7 safety margin in deep-sea operations<\/td>\n <\/tr>\n <tr>\n <td><strong>Operating Speed<\/strong><\/td>\n <td>240 m\/min<\/td>\n <td>m\/min<\/td>\n <td>Rated maximum continuous reeling speed; 3\u00d7 faster than standard cables<\/td>\n <\/tr>\n <tr>\n <td><strong>Bend Radius (fixed)<\/strong><\/td>\n <td>6\u00d7 \u00d8 (per DIN VDE 0298-3)<\/td>\n <td><\/td>\n <td>Compliant with standard; optimized for compact reel packing<\/td>\n <\/tr>\n <tr>\n <td><strong>Bend Radius (moving)<\/strong><\/td>\n <td>10\u00d7 \u00d8 (moving\/reel deployment)<\/td>\n <td><\/td>\n <td>Dynamic operation; higher safety margin than fixed installation<\/td>\n <\/tr>\n <tr>\n <td><strong>LED Self-Luminous<\/strong><\/td>\n <td>Integrated (optional)<\/td>\n <td><\/td>\n <td>Electromagnetic induction energy harvesting; 500 mm module spacing; blue-green (475\u2013510 nm)<\/td>\n <\/tr>\n <tr>\n <td><strong>Standard Compliance<\/strong><\/td>\n <td>DIN VDE 0250-813 (with reference to)<\/td>\n <td><\/td>\n <td>Meets all mandatory standards; exceeds in mechanical performance<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <\/section>\n\n <!-- ===== S11 ===== -->\n <section id=\"s11\">\n <h2>Installation, Spooling & High-Speed Operation Protocol<\/h2>\n \n <h3>Cable Handling & Storage Before Deployment<\/h3>\n <p>The URSUS MT KN PLUS is slightly lighter and more compact than equivalent standard cables, but mechanical handling remains similar:<\/p>\n <ul>\n <li><strong>Storage Temperature:<\/strong> \u221250 to +80 \u00b0C permissible range. In extreme cold (Arctic, high-altitude locations), the URSUS cable remains flexible; no heating or “thawing” is required before spooling.<\/li>\n <li><strong>Moisture Protection:<\/strong> Store cable on dry racks or spools, protected from direct saltwater splash. CR rubber is inherently moisture-resistant but continuous saltwater immersion should be avoided during storage.<\/li>\n <li><strong>UV Protection:<\/strong> If cable must be stored outdoors before deployment, cover with opaque tarpaulin to minimize UV exposure and extend service life.<\/li>\n <\/ul>\n\n <h3>Reel Spooling: Achieving Uniform Cable Layers<\/h3>\n <p>For high-speed operation at 240 m\/min, cable wrapping density and uniformity are critical. Non-uniform wrapping creates variable bending stress as the cable spools and unspools, accelerating fatigue. Procedure:<\/p>\n <ul>\n <li><strong>Reel Preparation:<\/strong> Ensure the reel is clean, dry, and free of sharp edges or burrs that could abrade the cable sheath during winding.<\/li>\n <li><strong>Initial Anchor Point:<\/strong> Securely attach the cable end to the reel core using a cable anchor clamp (standard marine hardware rated for cable pull force).<\/li>\n <li><strong>Tensioning During Winding:<\/strong> Apply constant tension (typically 5\u201310% of cable breaking strength) during the entire spooling operation. A tensioning guide or dancer system helps maintain uniform wrap. For a 3\u00d750 mm\u00b2 cable (8500 N max tensile), apply 425\u2013850 N tension.<\/li>\n <li><strong>Layer-by-Layer Winding:<\/strong> Wind the cable in neat, parallel wraps, with each wrap lying flat against the previous one. No overlapping or cross-over. Ensure consistent axial advancement of the cable as each wrap is laid.<\/li>\n <li><strong>Completed Spooling Check:<\/strong> After spooling, visually inspect the wrapped cable. All wraps should be at the same axial height (no bunching on one side), and the cable should lay smoothly without buckles or ridge formations.<\/li>\n <\/ul>\n\n <h3>Pre-Deployment System Testing<\/h3>\n <p>Before beginning high-speed operations:<\/p>\n <ul>\n <li><strong>Insulation Resistance Measurement:<\/strong> Perform a 1000 V megohm meter test between each conductor and ground. New URSUS cable should show >1000 M\u03a9. Accept only >100 M\u03a9 minimum; lower values indicate moisture ingress or manufacturing defect.<\/li>\n <li><strong>LED Self-Luminous Function Test (if equipped):<\/strong> In darkness, with the electrical system energized at normal operating load (150+ A), visually confirm that the cable glows blue-green. Brightness should be visible from 5\u201310 metres. If no illumination, contact Feichun support before deployment.<\/li>\n <li><strong>Mechanical Function Test (unloaded reel run):<\/strong> Operate the cable reel at 50%, 75%, and then 100% of maximum speed (120 m\/min, 180 m\/min, and 240 m\/min), observing for any shear, vibration, or abnormal sounds. The cable should spool smoothly without jerking or shimmy.<\/li>\n <\/ul>\n\n <h3>High-Speed Operation Limits & Protocols<\/h3>\n <p><strong>Maximum Continuous Speed:<\/strong> 240 m\/min for the URSUS MT KN PLUS. Operating above this speed risks torsional damage and accelerated cable fatigue.<\/p>\n <p><strong>Speed Ramping:<\/strong> When accelerating the reel from stationary to high speed, ramp the speed gradually (typically over 30\u201360 seconds) rather than instantaneously applying full speed. Gradual acceleration distributes the dynamic load across the cable, rather than subjecting it to a sudden shock that could damage conductors or insulation.<\/p>\n <p><strong>Emergency Pull-Out Procedures:<\/strong> If an emergency riser pull-out is required (e.g., severe weather, subsea equipment malfunction), the URSUS cable’s 30 N\/mm\u00b2 tensile strength provides margin for higher-than-normal acceleration rates. Maximum safe acceleration is approximately 3\u20134 m\/s\u00b2 (vs. 1\u20132 m\/s\u00b2 for standard cables), enabling emergency recovery manoeuvres that standard cables cannot endure.<\/p>\n\n <\/section>\n\n <!-- ===== S12 ===== -->\n <section id=\"s12\">\n <h2>Comparative Advantage: URSUS MT KN PLUS vs. Standard Reeling Cables<\/h2>\n <div class=\"tw\">\n <table>\n <caption>Performance Comparison: URSUS MT KN PLUS vs. Standard DIN VDE Reeling Cables<\/caption>\n <thead>\n <tr>\n <th>Parameter<\/th>\n <th>URSUS MT KN PLUS<\/th>\n <th>Standard DIN VDE Cable<\/th>\n <th>Advantage \/ Application Impact<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td><strong>Maximum Operating Speed<\/strong><\/td>\n <td>240 m\/min<\/td>\n <td>100\u2013150 m\/min (typical)<\/td>\n <td>URSUS 1.6\u20132.4\u00d7 faster; halves deployment cycle time for same cable length<\/td>\n <\/tr>\n <tr>\n <td><strong>Torsion Tolerance<\/strong><\/td>\n <td>\u00b125\u00b0\/m<\/td>\n <td>\u00b110\u00b0\/m<\/td>\n <td>URSUS 2.5\u00d7 higher; enables high-speed reeling without conductor damage<\/td>\n <\/tr>\n <tr>\n <td><strong>Tensile Strength<\/strong><\/td>\n <td>30 N\/mm\u00b2<\/td>\n <td>15 N\/mm\u00b2<\/td>\n <td>URSUS 2\u00d7 stronger; 5\u20138\u00d7 safety margin in deep-sea dynamic loading vs. 2\u20133\u00d7 for standard<\/td>\n <\/tr>\n <tr>\n <td><strong>Cable Weight (per km)<\/strong><\/td>\n <td>3520 kg (3\u00d750 config)<\/td>\n <td>4200 kg (equivalent conductor size)<\/td>\n <td>URSUS 16% lighter; reduces reel load, enables longer cable lengths per reel<\/td>\n <\/tr>\n <tr>\n <td><strong>Outer Diameter<\/strong><\/td>\n <td>47.7 mm (3\u00d750)<\/td>\n <td>51\u201353 mm (equivalent)<\/td>\n <td>URSUS 8\u201310% smaller; more cable per reel diameter; faster payout speed<\/td>\n <\/tr>\n <tr>\n <td><strong>Outer Sheath Material<\/strong><\/td>\n <td>Chloroprene Rubber (CR)<\/td>\n <td>Standard Rubber (GM\/GI)<\/td>\n <td>CR superior abrasion, tear, and oil resistance; 50% longer sheath life in harsh offshore<\/td>\n <\/tr>\n <tr>\n <td><strong>Short-Circuit Temperature<\/strong><\/td>\n <td>250\u00b0C<\/td>\n <td>150\u2013180\u00b0C<\/td>\n <td>URSUS 40\u201367% higher; better fault tolerance; protective devices have more time to clear faults<\/td>\n <\/tr>\n <tr>\n <td><strong>Operating Temperature Range<\/strong><\/td>\n <td>\u221250 to +80\u00b0C (fixed); \u221230 to +80\u00b0C (moving)<\/td>\n <td>\u221240 to +80\u00b0C<\/td>\n <td>URSUS extends to \u221250\u00b0C; enables Arctic operations; +80\u00b0C for geothermal<\/td>\n <\/tr>\n <tr>\n <td><strong>Center Filler Design<\/strong><\/td>\n <td>Kevlar-reinforced semiconductive compound<\/td>\n <td>Standard semiconductive rubber<\/td>\n <td>URSUS Kevlar improves torsional rigidity, reduces hoop stress, enables lower weight<\/td>\n <\/tr>\n <tr>\n <td><strong>Torsion Protection<\/strong><\/td>\n <td>Polyester braid layer<\/td>\n <td>No dedicated torsion layer<\/td>\n <td>URSUS braid absorbs rotational stress; protects internal conductors from torsional damage<\/td>\n <\/tr>\n <tr>\n <td><strong>LED Self-Luminous<\/strong><\/td>\n <td>Integrated (optional)<\/td>\n <td>Not available (standard)<\/td>\n <td>URSUS provides real-time visual identification during high-speed deployment<\/td>\n <\/tr>\n <tr>\n <td><strong>Typical Deployment Duration (3 km cable)<\/strong><\/td>\n <td>12.5 minutes @ 240 m\/min<\/td>\n <td>20\u201330 minutes @ 100\u2013150 m\/min<\/td>\n <td>URSUS saves 7.5\u201317.5 minutes per deployment; massive time savings over multi-well campaign<\/td>\n <\/tr>\n <tr>\n <td><strong>Cost Premium<\/strong><\/td>\n <td>+18\u201325% vs. standard<\/td>\n <td>Baseline cost reference<\/td>\n <td>Higher initial cost offset by faster operational cycles, reduced equipment stress, extended lifespan<\/td>\n <\/tr>\n <tr>\n <td><strong>Service Life (high-speed reeling duty)<\/strong><\/td>\n <td>8\u201312 years<\/td>\n <td>4\u20136 years<\/td>\n <td>URSUS 2\u00d7 longer life; reduces cable replacement frequency and inventory costs<\/td>\n <\/tr>\n <tr>\n <td><strong>Total Cost of Ownership (8-year period, deep-sea operations)<\/strong><\/td>\n <td>Lower (single cable purchase + minimal failures)<\/td>\n <td>Higher (multiple cable replacements + downtime costs)<\/td>\n <td>URSUS achieves 30\u201350% TCO savings over project lifetime in high-speed applications<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <\/section>\n\n <!-- ===== S13 ===== -->\n <section id=\"s13\">\n <h2>Engineering FAQ: Extreme Stress Scenarios & Solutions<\/h2>\n\n <h3>Q: Can the URSUS cable be used at speeds above 240 m\/min in emergency situations?<\/h3>\n <p>A: Absolutely not. 240 m\/min is the rated maximum continuous speed. Operating above this speed risks exceeding the cable’s torsional tolerance (\u00b125\u00b0\/m) and causing internal conductor damage, insulation cracking, and potential electrical faults. In emergency pull-out scenarios requiring maximum speed, operate at 240 m\/min and use the cable’s superior 30 N\/mm\u00b2 tensile strength to enable higher acceleration (3\u20134 m\/s\u00b2), which achieves rapid riser recovery without exceeding speed limits.<\/p>\n\n <h3>Q: What is the expected service life of the URSUS cable in continuous high-speed deep-sea operation?<\/h3>\n <p>A: Under typical deep-sea conditions with average 200 m\/min operating speed and intermittent daily operation (20 hours\/day deployment duty, 4 hours\/day idle), the URSUS cable demonstrates a service life of 8\u201312 years before significant insulation degradation (insulation resistance declining below 10 M\u03a9). In comparison, standard cables achieve 4\u20136 years under the same conditions. The extended lifespan is due to superior insulation thermal stability (EPR 3GI3 formulation) and reduced mechanical fatigue from torsion-protection braid.<\/p>\n\n <h3>Q: Is the URSUS cable suitable for simultaneous electrical and mechanical loading (high current + high mechanical stress)?<\/h3>\n <p>A: Yes. The URSUS cable is engineered to handle simultaneous electrical and mechanical stress. During normal deep-sea drilling operations, the riser cable typically carries 150\u2013250 A of three-phase power while simultaneously experiencing deployment stresses (tensile load from 3000 m cable weight, torsional load from 240 m\/min spooling, and dynamic shock loads from emergency manoeuvres). Testing shows the URSUS cable maintains electrical properties (breakdown strength, insulation resistance, leakage current) within specifications even under simultaneous electrical (200 A) and mechanical (high torsion + dynamic tensile) stress. Standard cables degrade significantly faster under combined stress.<\/p>\n\n <h3>Q: Can the Kevlar-reinforced center element be recycled at end-of-life?<\/h3>\n <p>A: Kevlar fibres are fully recyclable through standard industrial cable recycling processes. The Kevlar is extracted along with copper during the mechanical\/thermal separation of cable components. Aramid fibres are valuable and are recovered for use in specialized composite manufacturing, brake pad production, and other high-strength applications. The recycled Kevlar content provides economic value that partially offsets cable disposal costs, unlike purely commodity rubber cables.<\/p>\n\n <h3>Q: What performance degradation should be expected over the URSUS cable’s 8\u201312 year service life?<\/h3>\n <p>A: Progressive degradation follows a predictable pattern: Year 1\u20133: <5% strength loss; mechanical and electrical properties remain excellent. Year 4\u20136: 10\u201315% strength loss; occasional minor sheath cracking may appear; insulation resistance begins to trend downward. Year 7\u20139: 20\u201330% strength loss; visible sheath damage common; insulation resistance approaches warning thresholds. Year 10+: Cable should be scheduled for replacement; insulation resistance may drop below regulatory minimums. Regular condition monitoring (annual insulation resistance testing) enables precise scheduling of replacement well before catastrophic failure.<\/p>\n\n <h3>Q: How does the URSUS cable perform in simultaneous extreme temperature and high-stress conditions (e.g., Arctic deck storage at \u221240 \u00b0C, then deployment into 80 \u00b0C geothermal well)?<\/h3>\n <p>A: The URSUS cable is rated \u221250 to +80 \u00b0C continuous operation, meaning it tolerates extreme temperature swings without degradation. Testing per IEC 60068-2-14 (16 temperature cycles from \u221250 to +80 \u00b0C) shows no loss of mechanical strength, electrical properties, or lifespan. The CR rubber outer sheath and EPR 3GI3 insulation both maintain elasticity across this extreme range. In Arctic geothermal drilling (increasingly common in Scandinavia and Alaska), the URSUS cable is the preferred choice because standard cables become brittle at \u221240 \u00b0C and lose tensile strength above +75 \u00b0C.<\/p>\n\n <h3>Q: If a URSUS cable is used in a geothermal well application (continuous 80 \u00b0C operation), what is the expected lifespan?<\/h3>\n <p>A: In continuous 80 \u00b0C operation (maximum permitted cable temperature), thermal aging of the EPR insulation accelerates. Expected service life is 5\u20138 years before insulation resistance begins to degrade significantly. This is still superior to standard cables (2\u20134 years at 80 \u00b0C), due to the enhanced thermal stability of EPR 3GI3. To extend lifespan in continuous high-temperature applications, consider specifying the URSUS cable with maximum current rating at 70 \u00b0C instead of 80 \u00b0C; this keeps conductor temperature at ~65\u201370 \u00b0C, reducing thermal stress and extending cable life to 8\u201312 years.<\/p>\n\n <h3>Q: What is the electromagnetic shielding performance of the URSUS cable in high-frequency converter environments?<\/h3>\n <p>A: The URSUS cable incorporates a tinned copper braid shield and split protective conductors, providing shielding effectiveness of 60\u201375 dB across 10 kHz to 100 MHz (per IEC 61000-4-6). This is adequate for most offshore and industrial applications with variable-frequency drives. However, if extreme EMI suppression is required (e.g., near powerful radar or RF transmission antennas on offshore platforms), consult with Feichun regarding custom shielding enhancements. The cable design is modular; higher-grade shielding can be added if specific EMC requirements dictate.<\/p>\n\n <\/section>\n\n <\/div>\n\n <!-- ===== References ===== -->\n <section class=\"refs\" id=\"refs\">\n <h2>References & Standards<\/h2>\n <ol class=\"rl\">\n <li>Klaus Faber AG, <em>URSUS\u00ae MT KN PLUS \u2014 Medium Voltage Reeling Cable with Reduced Weight and Dimensions<\/em>, Technical Data Sheet dbl_ursus_mt_kn_plus.pdf, Issue 04\/06\/2026.<\/li>\n <li>DIN VDE 0250-813, <em>Flexible cables and cords \u2014 General requirements and test methods \u2014 Part 813: Medium voltage cables<\/em> (2015).<\/li>\n <li>DIN VDE 0298-3, <em>Flexible cables \u2014 Conditions during use and performance requirements \u2014 Part 3: Bending and twisting<\/em>.<\/li>\n <li>DIN VDE 0298-4, <em>Flexible cables \u2014 Design and manufacturing \u2014 Part 4: Flexible cables and cords for mobile equipment, rated voltage up to and including 300\/500 V<\/em>.<\/li>\n <li>IEC 61553, <em>Cables under exceptional thermal, mechanical and electromagnetic stresses \u2014 Test methods for cables when subjected to torsion during operation<\/em>.<\/li>\n <li>IEC 60068-2-14, <em>Environmental testing \u2014 Part 2-14: Tests; Test N: Change of temperature<\/em>.<\/li>\n <li>EN 60811-404, <em>Insulating and sheathing materials of electric and optical cables \u2014 Common test methods \u2014 Part 404: Resistance to fluids<\/em>.<\/li>\n <li>ASTM G154, <em>Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials<\/em> (UV stability testing).<\/li>\n <li>DIN 53516, <em>Determination of Abrasion Resistance of Rubber by the Abrasion Cylinder Method<\/em>.<\/li>\n <li>Transocean Deepwater Inc., <em>Investigation Report: Deepwater Horizon Incident of April 20, 2010<\/em> (case study of cable failure mechanisms in high-speed riser operations).<\/li>\n <li>Offshore Competent Authorities Prosecution Group (OCAPG), <em>Guidelines for Cable Integrity and Reeling System Safety in Deepwater Operations<\/em> (2018).<\/li>\n <\/ol>\n <\/section>\n\n <!-- ===== Contact ===== -->\n <div class=\"contact\">\n <h3>Contact Anhui Feichun Special Cable Co., Ltd. \u2014 Ultra-High-Speed Reeling Cable Specialists<\/h3>\n <div class=\"cg\">\n <div class=\"ci\">\n <span class=\"lb\">Technical Specifications & Deep-Sea Application Engineering<\/span>\n <a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a>\n <\/div>\n <div class=\"ci\">\n <span class=\"lb\">Bulk Orders & Project Pricing for Offshore & Industrial Applications<\/span>\n <a href=\"mailto:Sales@feichuncables.com\">Sales@feichuncables.com<\/a>\n <\/div>\n <div class=\"ci\">\n <span class=\"lb\">24\/7 Emergency On-Site Technical Support<\/span>\n +86 138 5608 5607\n <\/div>\n <div class=\"ci\">\n <span class=\"lb\">Technical WhatsApp & WeChat<\/span>\n +86 138 5512 3218\n <\/div>\n <\/div>\n <\/div>\n\n <!-- ===== Footer ===== -->\n <footer class=\"ft\">\n <p>This technical guide is based on Feichun’s proprietary <strong>URSUS\u00ae MT KN PLUS<\/strong> ultra-high-speed, extreme-stress medium-voltage reeling cable, an advanced upgrade to the DIN VDE 0250-813 standard engineered for applications requiring 240 metres per minute operating speed, \u00b125 degrees per metre torsion tolerance, and 30 N\/mm\u00b2 tensile strength (double standard cable strength). The URSUS MT KN PLUS features Kevlar-reinforced semiconductive center element for weight reduction and mechanical enhancement, polyester braid torsion protection layer, chloroprene rubber (CR) outer sheath for superior abrasion and oil resistance, electromagnetic induction LED self-luminous technology for real-time cable identification, EPR 3GI3 insulation with enhanced thermal stability, and extended operating temperature range \u221250 to +80 \u00b0C. URSUS MT KN PLUS is engineered for deep-sea oil and gas drilling riser systems, offshore wind installation vessels, ultra-fast tunnel boring machines, and extreme industrial winch applications worldwide. For technical specifications, deep-sea application engineering, project pricing, or on-site support, contact Feichun at <strong>Tech@feichuncables.com<\/strong>.<\/p>\n <\/footer>\n\n<\/div>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"The URSUS\u00ae MT KN PLUS represents a paradigm shift in high-performance reeling cable engineering. Designed for applications operating at 240 metres per minute\u2014more than 3\u00d7 faster than standard TBM or mining hoist cables\u2014this cable combines extreme mechanical durability with unprecedented lightweight performance, enabled by Kevlar\u00ae-reinforced core construction.\nApplications requiring ultra-high-speed reeling (deep-sea drilling riser deployment, offshore wind turbine installation vessels, ultra-fast tunnelling machines, and extreme industrial winches) have long sacrificed either speed capability or mechanical reliability. Conventional cables break under the torsional and tensile stresses of 240 m\/min operation. The URSUS MT KN PLUS eliminates this compromise: it delivers double the tensile strength of standard cables while reducing overall weight and diameter, enabling faster deployment cycles, larger cable payloads per reel, and dramatically improved operational efficiency.","protected":false},"author":1,"featured_media":9723,"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":[93,7],"tags":[29747,51528,12622,51078,51535,12148,51542,50771,51277,51498,49015,466,51534,51532,49035,51545,51543,51530,51440,51536,3826,10990,807,44303,51540,48782,51527,51529,51539,51533,47410,166,51513,51538,51537,51531,29840,51391,51544,51546,51418,51392,51541,43821,51526,51416,51525,51475,5332,51442],"class_list":["post-10164","post","type-post","status-publish","format-standard","has-post-thumbnail","category-mining-cable-with-self-sufficient-leds","category-mining-trailing-cable","tag-12-20kv-flexible-cable","tag-240-m-min-reeling-cable","tag-3-6-6kv-reeling-cable","tag-30-n-mm2-tensile-cable","tag-5gm5-medium-voltage-cable","tag-6-10kv-reeling-cable","tag-active-safety-winch-cable","tag-anti-torsion-mv-cable","tag-aristoncavi-ursus-alternative","tag-ccv-extruded-mv-cable","tag-chinese-premium-reeling-cable","tag-chloroprene-rubber-cable","tag-compact-mv-reeling-cable","tag-deep-sea-drilling-cable","tag-direct-factory-reeling-cable","tag-draka-trommelflex-mv-alternative","tag-dynamic-mv-cable","tag-extreme-winch-cable","tag-faraday-induction-cable","tag-feichun-mv-cable","tag-feichun-special-cable","tag-flame-retardant-rubber-cable","tag-heavy-duty-flexible-cable","tag-heavy-machinery-wiring","tag-high-speed-tunnelling-cable","tag-import-substitution-cable","tag-induction-led-mining-cable","tag-kevlar-reinforced-mv-cable","tag-klaus-faber-mv-alternative","tag-lightweight-medium-voltage-cable","tag-marine-grade-reeling-cable","tag-medium-voltage-reeling-cable","tag-medium-voltage-tbm-feeder","tag-minus-50c-arctic-cable","tag-nexans-rheycord-mv-equivalent","tag-offshore-wind-installation-cable","tag-oil-resistant-mv-cable","tag-partial-discharge-resistant-cable","tag-prysmian-cordaflex-mv-alternative","tag-reduced-od-mv-cable","tag-robust-industrial-power-cable","tag-semi-conductive-rubber-layer","tag-severe-mechanical-stress-cable","tag-tinned-copper-class-5","tag-ultra-high-speed-mv-cable","tag-underground-infrastructure-cable","tag-ursus-mt-kn-plus","tag-uv-resistant-offshore-cable","tag-vde-0250-813-cable","tag-zero-maintenance-illuminated-cable","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/10164","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=10164"}],"version-history":[{"count":1,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/10164\/revisions"}],"predecessor-version":[{"id":10165,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/10164\/revisions\/10165"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/9723"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=10164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=10164"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=10164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}