{"id":10254,"date":"2026-04-10T16:04:03","date_gmt":"2026-04-10T08:04:03","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=10254"},"modified":"2026-04-10T16:04:08","modified_gmt":"2026-04-10T08:04:08","slug":"walstoon-ws-fstn-2pnct-sb-festoon-system-flexible-cable","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/walstoon-ws-fstn-2pnct-sb-festoon-system-flexible-cable\/","title":{"rendered":"WALSTOON\u00ae\u00a0WS-FSTN-2PNCT-SB Festoon System Flexible Cable"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">AC 600V Festoon System Flexible Cable with Tinned Copper Shield Braid, JIS C 3327 Compliant, \u221240\u00b0C to +90\u00b0C Operating Range, Oil-Resistant, Flame-Retardant \u2014 Available in Single-Core (2\u201330 Cores) and Paired-Core (2P\u20138P) Configurations for Port Gantry Cranes, Ship Unloaders, Cable Chain Systems, and General Industrial Festoon Applications<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Comprehensive Festoon Cable Solution: Tinned Copper Braided Shield for Electromagnetic Interference Protection in Electrically Noisy Crane Environments, Cross-Linked Elastomer Insulation and Chloroprene Rubber Sheath for Oil, Ozone, UV, and Abrasion Resistance, Extensive Configuration Range from Compact 2-Core Signal Cables to High-Density 30-Core Multi-Circuit Cables and Paired-Core Variants for Balanced Signal Transmission, Purpose-Built for Festoon Trolley Systems on Port Gantry Cranes, Grab-Type Ship Unloaders, Rail-Mounted Container Cranes, Cable Chain (Energy Chain) Systems, and Heavy-Duty Industrial Overhead Crane Applications<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"e0e0df\" data-has-transparency=\"false\" style=\"--dominant-color: #e0e0df;\" loading=\"lazy\" decoding=\"async\" width=\"932\" height=\"628\" sizes=\"auto, (max-width: 932px) 100vw, 932px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1151-932x628.avif\" alt=\"\" class=\"wp-image-10255 not-transparent\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1151-932x628.avif 932w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1151-300x202.avif 300w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1151-768x518.avif 768w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1151-400x270.avif 400w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1151-800x539.avif 800w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1151-832x561.avif 832w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/image-1151.avif 1037w\" \/><\/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>WALSTOON\u00ae WS-FSTN-2PNCT-SB Festoon System Flexible Cable with Copper Shield Braid for Port Cranes, Ship Unloaders &#038; Industrial Festoon Applications | FeiChun Cable<\/title>\n<meta name=\"description\" content=\"WALSTOON\u00ae WS-FSTN-2PNCT-SB festoon system flexible cable per JIS C 3327. Tinned copper shield braid, AC 600V rated, \u221240\u00b0C to +90\u00b0C. Available in single-core (2\u201330 cores) and paired-core (2P\u20138P) configurations. Designed for festoon systems, cable chain systems, port cranes, ship unloaders, and heavy-duty industrial applications. Oil, ozone, UV, and moisture resistant. Feichun equivalent available.\">\n<meta name=\"keywords\" content=\"festoon cable, festoon system cable, ship unloader cable, port crane cable, gantry crane cable, JIS C 3327, 2PNCT cable, cable chain cable, crane cable, container crane cable, quay crane cable, STS crane cable, WS-FSTN-2PNCT-SB, WALSTOON cable, FeiChun festoon cable, flexible crane cable, oil resistant cable, abrasion resistant cable, UV resistant cable, shielded braid cable, heavy duty festoon cable, port equipment cable, energy chain cable, cable trolley cable, harbor crane cable, wharf crane cable, ship to shore crane cable, bulk material handling cable, coal unloader cable, grain unloader cable, ore unloader cable, rubber sheathed festoon cable, JIS standard cable, Japanese standard cable, crane control cable, shielded cable, EMI shielded cable, ozone resistant cable, coastal environment cable, salt spray resistant cable, flame retardant crane cable, 600V festoon cable, minus 40 degree cable, extreme temperature cable, multi core festoon cable, paired core festoon cable, copper braid shielded cable, industrial festoon cable, overhead crane cable, grab ship unloader cable, RMG crane cable, RTG crane 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=\"WALSTOON\u00ae WS-FSTN-2PNCT-SB \u2014 Copper Shield Braid Festoon Cable for Port Cranes, Ship Unloaders &#038; Industrial Applications\">\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&#038;family=Instrument+Sans:wght@400;500;600;700&#038;family=IBM+Plex+Mono:wght@400;500&#038;display=swap\" rel=\"stylesheet\">\n<style>:root{color-scheme:light 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\"]\";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\":\"WALSTOON\u00ae WS-FSTN-2PNCT-SB \u2014 Copper Shield Braid Festoon System Flexible Cable for Port Cranes, Ship Unloaders & Industrial Applications, JIS C 3327 Standard\",\"author\":{\"@type\":\"Organization\",\"name\":\"Anhui Feichun Special Cable Co., Ltd.\"},\"publisher\":{\"@type\":\"Organization\",\"name\":\"Anhui Feichun Special Cable Co., Ltd.\"},\"datePublished\":\"2026-04-10\"}<\/script>\n<\/head>\n<body>\n<div class=\"page-wrap\">\n\n  <header class=\"hdr\">\n    <span class=\"badge\">JIS C 3327 \u2014 Japanese Industrial Standard<\/span>\n    <span class=\"badge\">Tinned Copper Shield Braid<\/span>\n    <span class=\"badge\">Festoon &#038; Cable Chain System<\/span>\n    <span class=\"badge\">Single-Core &#038; Paired-Core Configurations<\/span>\n    <h1>WALSTOON<span class=\"tm\">\u00ae<\/span> WS-FSTN-2PNCT-SB Festoon System Flexible Cable<\/h1>\n    <p class=\"sub\">AC 600V Festoon System Flexible Cable with Tinned Copper Shield Braid, JIS C 3327 Compliant, \u221240\u00b0C to +90\u00b0C Operating Range, Oil-Resistant, Flame-Retardant \u2014 Available in Single-Core (2\u201330 Cores) and Paired-Core (2P\u20138P) Configurations for Port Gantry Cranes, Ship Unloaders, Cable Chain Systems, and General Industrial Festoon Applications<\/p>\n    <p class=\"sub-en\">Comprehensive Festoon Cable Solution: Tinned Copper Braided Shield for Electromagnetic Interference Protection in Electrically Noisy Crane Environments, Cross-Linked Elastomer Insulation and Chloroprene Rubber Sheath for Oil, Ozone, UV, and Abrasion Resistance, Extensive Configuration Range from Compact 2-Core Signal Cables to High-Density 30-Core Multi-Circuit Cables and Paired-Core Variants for Balanced Signal Transmission, Purpose-Built for Festoon Trolley Systems on Port Gantry Cranes, Grab-Type Ship Unloaders, Rail-Mounted Container Cranes, Cable Chain (Energy Chain) Systems, and Heavy-Duty Industrial Overhead Crane Applications<\/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: The Versatile Festoon Cable for Every Configuration<\/a><\/li>\n      <li><a href=\"#s2\">Technical Specifications: JIS C 3327 Breakdown<\/a><\/li>\n      <li><a href=\"#s3\">Tinned Copper Shield Braid: EMI Protection in Crane Environments<\/a><\/li>\n      <li><a href=\"#s4\">Cable Construction: Layer-by-Layer Analysis<\/a><\/li>\n      <li><a href=\"#s5\">Configuration Options: Single-Core, Multi-Core &#038; Paired-Core<\/a><\/li>\n      <li><a href=\"#s6\">Dimensional &#038; Electrical Data \u2014 Single-Core (2\u201312 Cores)<\/a><\/li>\n      <li><a href=\"#s7\">Dimensional &#038; Electrical Data \u2014 Single-Core (12\u201330 Cores)<\/a><\/li>\n      <li><a href=\"#s8\">Dimensional &#038; Electrical Data \u2014 Paired-Core (2P\u20138P)<\/a><\/li>\n      <li><a href=\"#s9\">Application Guide: Port Cranes, Ship Unloaders &#038; Industrial Use<\/a><\/li>\n      <li><a href=\"#s10\">Environmental Performance: Oil, Ozone, UV &#038; Coastal Conditions<\/a><\/li>\n      <li><a href=\"#s11\">Festoon System Design Considerations<\/a><\/li>\n      <li><a href=\"#s12\">WS-FSTN-2PNCT-SB vs. WS-FSTN-2PNCT-PSB: Choosing the Right Cable<\/a><\/li>\n      <li><a href=\"#s13\">Cost-Effective Feichun Equivalent<\/a><\/li>\n      <li><a href=\"#s14\">Technical FAQ<\/a><\/li>\n      <li><a href=\"#s15\">References &#038; Standards<\/a><\/li>\n    <\/ol>\n  <\/nav>\n\n  <!-- ===== S1 ===== -->\n  <section class=\"body\" id=\"s1\">\n    <h2>Introduction: The Versatile Festoon Cable for Every Configuration<\/h2>\n\n    <p>The WALSTOON<span class=\"tm\">\u00ae<\/span> WS-FSTN-2PNCT-SB is a <strong>comprehensive-range festoon system flexible cable<\/strong> designed to meet the diverse wiring requirements of port gantry cranes, ship unloaders, cable chain systems, and industrial overhead crane applications. While its sibling product \u2014 the WS-FSTN-2PNCT-PSB \u2014 features Kevlar\u00ae para-aramid fibre reinforcement for extreme tensile applications, the WS-FSTN-2PNCT-SB focuses on delivering the <strong>widest possible range of core configurations<\/strong> with reliable tinned copper shield braiding, covering everything from compact 2-core signal cables to high-density 30-core multi-circuit cables and paired-core variants for balanced signal transmission.<\/p>\n\n    <p>Modern port crane and ship unloader electrical systems require multiple cable types: power supply cables for trolley drives and hoist motors, multi-core control cables for PLC and relay-based crane control systems, paired signal cables for analogue sensor data and fieldbus communication, and shielded cables for variable-frequency drive (VFD) feedback circuits. The WS-FSTN-2PNCT-SB cable family addresses all of these requirements within a single product specification, ensuring consistent mechanical performance, environmental resistance, and installation characteristics across the entire festoon system \u2014 simplifying procurement, reducing inventory complexity, and guaranteeing compatibility between all cable runs on the same crane.<\/p>\n\n    <p>The cable is manufactured to <strong>JIS C 3327<\/strong> (Japanese Industrial Standard for rubber-insulated cabtyre cables), providing full compliance with the mechanical, electrical, and environmental performance requirements demanded by the port crane industry. The <strong>tinned copper shield braid<\/strong> delivers effective electromagnetic interference (EMI) shielding in the electrically noisy environment of crane operations, where VFD drives, high-current motors, and radio communication equipment generate significant electromagnetic noise. The <strong>chloroprene rubber (CR) outer sheath<\/strong> provides comprehensive protection against oil, ozone, UV radiation, abrasion, and flame \u2014 all critical requirements for cables permanently exposed to the harsh coastal port environment.<\/p>\n\n    <div class=\"note red\">\n      <div class=\"nt\">Critical Application Warning<\/div>\n      <p>Festoon cables on port cranes are <strong>safety-critical components<\/strong>. Cable failure during crane operation can result in loss of crane control, uncontrolled load release, collision damage, and risk to human life. The WS-FSTN-2PNCT-SB cable must be installed, supported, and maintained in strict accordance with the crane manufacturer&#8217;s festoon system specifications and local port authority safety regulations. Cable inspection intervals, replacement schedules, and minimum bending radii must be observed without exception.<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S2 ===== -->\n  <section class=\"body\" id=\"s2\">\n    <h2>Technical Specifications: JIS C 3327 Breakdown<\/h2>\n\n    <div class=\"tw\">\n      <table>\n        <caption>WALSTOON\u00ae WS-FSTN-2PNCT-SB Technical Specifications<\/caption>\n        <thead><tr><th>Parameter<\/th><th>Specification<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>Product Designation<\/td><td><strong>WS-FSTN-2PNCT-SB<\/strong> (Festoon, 2PNCT type, Shield Braid)<\/td><\/tr>\n          <tr><td>Standard Compliance<\/td><td><strong>JIS C 3327<\/strong> (Japanese Industrial Standard for Rubber-Insulated Cabtyre Cables). Construction verified per JIS C 3005.<\/td><\/tr>\n          <tr><td>Rated Voltage<\/td><td><strong>AC 600V<\/strong><\/td><\/tr>\n          <tr><td>Test Voltage<\/td><td><strong>AC 3,000V \/ 1 minute<\/strong><\/td><\/tr>\n          <tr><td>Rated Temperature<\/td><td><strong>90\u00b0C<\/strong> (maximum continuous conductor temperature)<\/td><\/tr>\n          <tr><td>Ambient Temperature Range<\/td><td><strong>\u221240\u00b0C to +90\u00b0C<\/strong><\/td><\/tr>\n          <tr><td>Minimum Bending Radius<\/td><td><strong>6 \u00d7 OD<\/strong> (outer diameter)<\/td><\/tr>\n          <tr><td>Shield Construction<\/td><td><strong>Tinned copper braid<\/strong>. Provides EMI shielding for crane control and signal circuits.<\/td><\/tr>\n          <tr><td>Flame Retardancy<\/td><td><strong>JIS C 3005<\/strong> compliant<\/td><\/tr>\n          <tr><td>Oil Resistance<\/td><td><strong>JIS C 3005<\/strong> compliant. Resistant to mineral oils, hydraulic fluids, and lubricants.<\/td><\/tr>\n          <tr><td>Abrasion Resistance<\/td><td><strong>JIS C 3327 Table 6.12<\/strong> compliant<\/td><\/tr>\n          <tr><td>Weather Resistance<\/td><td>Resistant to <strong>ozone, UV radiation, and moisture<\/strong>. Suitable for permanent outdoor coastal installation.<\/td><\/tr>\n          <tr><td>Core Identification<\/td><td>Cable cores identified by suitable methods per JIS standard.<\/td><\/tr>\n          <tr><td>Available Configurations<\/td><td><strong>Single-core:<\/strong> 2\u201330 cores (0.75\u20133.5 mm\u00b2). <strong>Paired-core:<\/strong> 2P\u20138P (1.25\u20133.5 mm\u00b2).<\/td><\/tr>\n          <tr><td>Primary Application<\/td><td>Festoon systems, cable chain systems, cable trolley systems on port cranes, ship unloaders, and industrial overhead cranes.<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S3 ===== -->\n  <section class=\"body\" id=\"s3\">\n    <h2>Tinned Copper Shield Braid: EMI Protection in Crane Environments<\/h2>\n\n    <p>The WS-FSTN-2PNCT-SB cable features a <strong>tinned copper braided shield<\/strong> that provides critical electromagnetic interference (EMI) protection in the electrically hostile environment of port crane operations. Modern port cranes are dense concentrations of high-power electrical equipment: variable-frequency drives (VFDs) generating high-frequency switching noise, hoist motors drawing hundreds of amperes during acceleration, slip-ring assemblies producing brush-contact interference, and radio communication equipment broadcasting on multiple frequencies. Without effective shielding, this electromagnetic noise couples into control and signal cables, causing false signals, communication errors, and unpredictable crane behaviour \u2014 a serious safety hazard.<\/p>\n\n    <p>The tinned copper braid provides shielding effectiveness across a wide frequency range. The tin coating on the copper wires serves a dual purpose: it prevents copper oxidation in the humid, salt-spray-laden coastal port atmosphere (oxidised copper has significantly higher contact resistance, which degrades shielding effectiveness over time), and it improves the solderability of the braid at cable termination points, ensuring low-impedance ground connections that maintain shield integrity throughout the cable&#8217;s operational life.<\/p>\n\n    <p>The shield braid thickness varies by cable configuration: <strong>0.3 mm<\/strong> for smaller-diameter cables (up to approximately 12 cores at smaller conductor sizes) and <strong>0.45 mm<\/strong> for larger-diameter cables (higher core counts and larger conductor sizes). The thicker braid on larger cables compensates for the greater circumference and ensures consistent shielding coverage density regardless of cable diameter. Both braid thicknesses provide adequate shielding for typical crane control and signal applications, including analogue 4\u201320 mA sensor loops, RS-485 fieldbus communication, and encoder feedback signals from VFD-controlled motors.<\/p>\n\n    <div class=\"note blue\">\n      <div class=\"nt\">Shield Grounding Best Practice<\/div>\n      <p>For maximum EMI protection, the shield braid should be grounded at <strong>one end only<\/strong> for analogue signal cables (to prevent ground loops that introduce 50\/60 Hz noise) and at <strong>both ends<\/strong> for digital communication cables and VFD motor feedback cables (to provide 360\u00b0 shielding against high-frequency noise). At each grounding point, the braid should be terminated with a low-impedance clamp connection \u2014 not a pigtail \u2014 to maintain shield effectiveness at high frequencies. Consult the crane manufacturer&#8217;s EMC guidelines for specific grounding requirements.<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S4 ===== -->\n  <section class=\"body\" id=\"s4\">\n    <h2>Cable Construction: Layer-by-Layer Analysis<\/h2>\n\n    <div class=\"tw\">\n      <table>\n        <caption>WS-FSTN-2PNCT-SB Cable Construction \u2014 Layer Breakdown<\/caption>\n        <thead><tr><th>Layer<\/th><th>Material<\/th><th>Function<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>Conductor<\/td><td>Annealed copper, Class 5 flexible stranding<\/td><td>Electrical power and signal transmission. Fine-stranded construction for maximum flex life in dynamic festoon and cable chain applications.<\/td><\/tr>\n          <tr><td>Insulation<\/td><td>Cross-linked elastomer (XLPE-equivalent rubber compound), 90\u00b0C rated<\/td><td>Primary electrical insulation. Oil-resistant formulation per JIS C 3005. Maintains dielectric strength across \u221240\u00b0C to +90\u00b0C.<\/td><\/tr>\n          <tr><td>Core Assembly<\/td><td>Single cores or paired cores with suitable fillers<\/td><td>Single-core variants for power and general control; paired-core variants for balanced signal transmission and inherent common-mode noise rejection.<\/td><\/tr>\n          <tr><td>Shield Braid<\/td><td>Tinned copper braid (0.3 mm or 0.45 mm thickness)<\/td><td>Electromagnetic shielding. Prevents EMI coupling between power and signal circuits. Protects crane control signals from external noise sources.<\/td><\/tr>\n          <tr><td>Outer Sheath<\/td><td>Special chloroprene rubber (CR) compound<\/td><td>Mechanical protection. Resistant to oil, ozone, UV, abrasion, and flame per JIS C 3327. Designed for permanent outdoor coastal exposure.<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <p>The WS-FSTN-2PNCT-SB is available in two core assembly configurations, each optimised for different crane circuit requirements. <strong>Single-core variants<\/strong> (2, 3, 4, 5, 6, 10, 12, 16, 20, 24, and 30 cores) are used for power distribution, relay-based control circuits, and general-purpose wiring where individual conductors are connected to separate terminal points. <strong>Paired-core variants<\/strong> (2P, 3P, 4P, 5P, 6P, 7P, and 8P) are used for balanced signal transmission \u2014 each pair consists of two insulated conductors twisted together with a controlled lay length, providing inherent common-mode noise rejection for analogue sensors, digital communication buses, and encoder feedback circuits.<\/p>\n\n  <\/section>\n\n  <!-- ===== S5 ===== -->\n  <section class=\"body\" id=\"s5\">\n    <h2>Configuration Options: Single-Core, Multi-Core &#038; Paired-Core<\/h2>\n\n    <p>The WS-FSTN-2PNCT-SB cable family offers an exceptionally wide range of configurations \u2014 <strong>44 individual specifications<\/strong> across single-core and paired-core variants \u2014 enabling crane electrical designers to specify a single cable product family for the entire festoon system. This approach eliminates compatibility concerns, simplifies spare parts inventory, and ensures consistent mechanical behaviour (bending radius, weight, flexibility) across all cable runs on the same festoon trolley.<\/p>\n\n    <h3>Single-Core Configurations (2\u201330 Cores)<\/h3>\n    <p>Single-core variants are available with <strong>2, 3, 4, 5, 6, 10, 12, 16, 20, 24, and 30 cores<\/strong>, each in conductor sizes of <strong>0.75, 1.25, 2, and 3.5 mm\u00b2<\/strong>. This covers the full spectrum of crane electrical requirements: 2-core for simple limit switch circuits, 3-core and 4-core for three-phase motor power, 5-core and 6-core for motor power plus control, and 10\u201330 core for complex multi-circuit PLC control cables that carry dozens of discrete signals in a single cable run.<\/p>\n\n    <h3>Paired-Core Configurations (2P\u20138P)<\/h3>\n    <p>Paired-core variants are available with <strong>2P, 3P, 4P, 5P, 6P, 7P, and 8P<\/strong> in conductor sizes of <strong>1.25, 2, and 3.5 mm\u00b2<\/strong>. Paired construction is essential for noise-sensitive circuits: analogue 4\u201320 mA sensor loops (load cells, wind speed sensors, position transducers), RS-485\/RS-422 serial communication (PROFIBUS, Modbus), and encoder feedback from VFD-controlled motors. Each pair provides balanced impedance and inherent rejection of common-mode electromagnetic noise.<\/p>\n\n    <div class=\"note amber\">\n      <div class=\"nt\">Configuration Selection Guide<\/div>\n      <p>For typical STS container crane festoon systems: <strong>4-core \u00d7 3.5 mm\u00b2<\/strong> for trolley drive power supply; <strong>12-core \u00d7 1.25 mm\u00b2<\/strong> for discrete control signals (limits, interlocks, indicators); <strong>4P \u00d7 1.25 mm\u00b2<\/strong> for analogue sensor data; <strong>2P \u00d7 2 mm\u00b2<\/strong> for fieldbus communication. Contact Feichun&#8217;s application engineering team for festoon system cable schedule design assistance.<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S6 ===== -->\n  <section class=\"body\" id=\"s6\">\n    <h2>Dimensional &#038; Electrical Data \u2014 Single-Core (2\u201312 Cores)<\/h2>\n\n    <div class=\"tw\">\n      <table>\n        <caption>WS-FSTN-2PNCT-SB \u2014 Single-Core Configurations (2\u201312 Cores)<\/caption>\n        <thead><tr><th>Cores<\/th><th>Size (mm\u00b2)<\/th><th>Cond. \u00d8 (mm)<\/th><th>Insulation (mm)<\/th><th>Shield (mm)<\/th><th>Sheath (mm)<\/th><th>OD (mm)<\/th><th>Mass (kg\/km)<\/th><th>Max. R 20\u00b0C (\u03a9\/km)<\/th><th>Min. IR 20\u00b0C (M\u03a9\u00b7km)<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>2<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.3<\/td><td>1.8<\/td><td>11.0<\/td><td>130<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>2<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>1.8<\/td><td>12.0<\/td><td>155<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>2<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.3<\/td><td>1.9<\/td><td>13.0<\/td><td>185<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>2<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.0<\/td><td>14.5<\/td><td>245<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>3<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.3<\/td><td>1.8<\/td><td>11.5<\/td><td>150<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>3<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>1.9<\/td><td>12.5<\/td><td>185<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>3<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.3<\/td><td>1.9<\/td><td>13.5<\/td><td>215<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>3<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.0<\/td><td>15.0<\/td><td>295<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>4<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.3<\/td><td>1.9<\/td><td>12.5<\/td><td>175<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>4<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>1.9<\/td><td>13.5<\/td><td>215<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>4<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.3<\/td><td>2.0<\/td><td>14.5<\/td><td>260<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>4<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.1<\/td><td>16.5<\/td><td>360<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>5<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.3<\/td><td>1.9<\/td><td>13.5<\/td><td>200<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>5<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.0<\/td><td>14.5<\/td><td>355<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>5<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.3<\/td><td>2.0<\/td><td>15.5<\/td><td>300<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>5<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.2<\/td><td>17.5<\/td><td>435<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>6<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.3<\/td><td>2.0<\/td><td>14.5<\/td><td>235<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>6<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.1<\/td><td>15.5<\/td><td>295<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>6<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.3<\/td><td>2.1<\/td><td>16.5<\/td><td>355<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>6<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.3<\/td><td>19.0<\/td><td>510<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>10<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.3<\/td><td>2.2<\/td><td>17.5<\/td><td>255<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>10<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.3<\/td><td>19.0<\/td><td>450<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>10<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.3<\/td><td>2.3<\/td><td>21.0<\/td><td>550<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>10<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.5<\/td><td>24.0<\/td><td>835<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>12<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.3<\/td><td>2.2<\/td><td>18.0<\/td><td>385<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S7 ===== -->\n  <section class=\"body\" id=\"s7\">\n    <h2>Dimensional &#038; Electrical Data \u2014 Single-Core (12\u201330 Cores)<\/h2>\n\n    <div class=\"tw\">\n      <table>\n        <caption>WS-FSTN-2PNCT-SB \u2014 Single-Core Configurations (12\u201330 Cores)<\/caption>\n        <thead><tr><th>Cores<\/th><th>Size (mm\u00b2)<\/th><th>Cond. \u00d8 (mm)<\/th><th>Insulation (mm)<\/th><th>Shield (mm)<\/th><th>Sheath (mm)<\/th><th>OD (mm)<\/th><th>Mass (kg\/km)<\/th><th>Max. R 20\u00b0C (\u03a9\/km)<\/th><th>Min. IR 20\u00b0C (M\u03a9\u00b7km)<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>12<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.3<\/td><td>19.5<\/td><td>495<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>12<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.3<\/td><td>2.4<\/td><td>21.0<\/td><td>620<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>12<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.6<\/td><td>25.0<\/td><td>945<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>16<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.3<\/td><td>2.3<\/td><td>19.5<\/td><td>475<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>16<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.4<\/td><td>22.0<\/td><td>640<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>16<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>2.5<\/td><td>24.0<\/td><td>800<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>16<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.7<\/td><td>27.0<\/td><td>1,190<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>20<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.45<\/td><td>2.4<\/td><td>22.0<\/td><td>595<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>20<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.5<\/td><td>24.0<\/td><td>770<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>20<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>2.7<\/td><td>26.0<\/td><td>975<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>20<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.9<\/td><td>30.0<\/td><td>1,450<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>24<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.45<\/td><td>2.5<\/td><td>24.0<\/td><td>695<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>24<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.7<\/td><td>27.0<\/td><td>920<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>24<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>2.8<\/td><td>28.0<\/td><td>1,150<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>24<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>3.1<\/td><td>33.0<\/td><td>1,740<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>30<\/td><td>0.75<\/td><td>1.1<\/td><td>0.8<\/td><td>0.45<\/td><td>2.6<\/td><td>25.0<\/td><td>815<\/td><td>26.6<\/td><td>500<\/td><\/tr>\n          <tr><td>30<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.8<\/td><td>28.0<\/td><td>1,080<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>30<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>2.9<\/td><td>30.0<\/td><td>1,360<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>30<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>3.2<\/td><td>35.0<\/td><td>2,070<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <div class=\"note amber\">\n      <div class=\"nt\">Shield Braid Thickness Note<\/div>\n      <p>Cables with higher core counts and larger conductor sizes transition from <strong>0.3 mm<\/strong> to <strong>0.45 mm<\/strong> shield braid thickness. This compensates for the greater cable circumference, maintaining consistent shielding coverage density. The transition occurs at approximately 10\u201312 cores for 3.5 mm\u00b2 conductors and at 16\u201320 cores for smaller conductors. Always verify the shield thickness in the specification table when calculating cable weight and outer diameter for festoon system design.<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S8 ===== -->\n  <section class=\"body\" id=\"s8\">\n    <h2>Dimensional &#038; Electrical Data \u2014 Paired-Core (2P\u20138P)<\/h2>\n\n    <div class=\"tw\">\n      <table>\n        <caption>WS-FSTN-2PNCT-SB \u2014 Paired-Core Configurations (2P\u20138P)<\/caption>\n        <thead><tr><th>Pairs<\/th><th>Size (mm\u00b2)<\/th><th>Cond. \u00d8 (mm)<\/th><th>Insulation (mm)<\/th><th>Shield (mm)<\/th><th>Sheath (mm)<\/th><th>OD (mm)<\/th><th>Mass (kg\/km)<\/th><th>Max. R 20\u00b0C (\u03a9\/km)<\/th><th>Min. IR 20\u00b0C (M\u03a9\u00b7km)<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>2P<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.3<\/td><td>19.5<\/td><td>370<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>2P<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.3<\/td><td>2.4<\/td><td>21.0<\/td><td>440<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>2P<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.6<\/td><td>25.0<\/td><td>625<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>3P<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.3<\/td><td>2.4<\/td><td>21.0<\/td><td>435<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>3P<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>2.5<\/td><td>23.0<\/td><td>550<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>3P<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.7<\/td><td>26.0<\/td><td>760<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>4P<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.5<\/td><td>23.0<\/td><td>545<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>4P<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>2.6<\/td><td>25.0<\/td><td>660<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>4P<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.8<\/td><td>29.0<\/td><td>920<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>5P<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.6<\/td><td>25.0<\/td><td>650<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>5P<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>2.7<\/td><td>27.0<\/td><td>790<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>5P<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>3.0<\/td><td>32.0<\/td><td>1,120<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>6P<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.7<\/td><td>27.0<\/td><td>760<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>6P<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>2.9<\/td><td>30.0<\/td><td>940<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>6P<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>3.1<\/td><td>34.0<\/td><td>1,320<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>7P<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>2.9<\/td><td>30.0<\/td><td>890<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>7P<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>3.0<\/td><td>32.0<\/td><td>1,080<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>7P<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>3.3<\/td><td>37.0<\/td><td>1,540<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n          <tr><td>8P<\/td><td>1.25<\/td><td>1.5<\/td><td>0.8<\/td><td>0.45<\/td><td>3.0<\/td><td>32.0<\/td><td>1,010<\/td><td>16.00<\/td><td>500<\/td><\/tr>\n          <tr><td>8P<\/td><td>2<\/td><td>1.8<\/td><td>0.8<\/td><td>0.45<\/td><td>3.2<\/td><td>35.0<\/td><td>1,250<\/td><td>10.20<\/td><td>500<\/td><\/tr>\n          <tr><td>8P<\/td><td>3.5<\/td><td>2.5<\/td><td>0.8<\/td><td>0.45<\/td><td>3.5<\/td><td>41.0<\/td><td>1,800<\/td><td>5.54<\/td><td>400<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <div class=\"note blue\">\n      <div class=\"nt\">Understanding Paired-Core Specifications<\/div>\n      <p><strong>P = pair<\/strong> (2 conductors per pair). A 6P cable contains 12 individual conductors arranged as 6 twisted pairs. The <strong>Max. R @ 20\u00b0C<\/strong> and <strong>Min. IR @ 20\u00b0C<\/strong> values apply to each individual conductor within a pair. The paired construction provides inherent <strong>common-mode rejection ratio (CMRR)<\/strong> of typically 40\u201360 dB at frequencies up to 1 MHz, making these cables suitable for analogue sensor circuits, RS-485 fieldbus communication, and encoder feedback applications in electrically noisy crane environments.<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S9 ===== -->\n  <section class=\"body\" id=\"s9\">\n    <h2>Application Guide: Port Cranes, Ship Unloaders &#038; Industrial Use<\/h2>\n\n    <h3>Ship-to-Shore (STS) Container Cranes<\/h3>\n    <p>STS cranes require multiple festoon cables running in parallel along the crane boom: power cables for the trolley drive system, multi-core control cables for PLC-based crane management, paired signal cables for load cell data and wind sensor feedback, and shielded cables for VFD encoder signals. The WS-FSTN-2PNCT-SB cable family provides all of these cable types within a single product specification, ensuring mechanical compatibility across the festoon system and simplifying procurement for crane builders and terminal operators.<\/p>\n\n    <h3>Grab-Type Ship Unloaders<\/h3>\n    <p>Grab-type ship unloaders handling bulk cargo (coal, iron ore, grain, phosphate, cement) use festoon cables for trolley power and control across the unloader boom. The cable&#8217;s JIS C 3327 abrasion resistance is critical in the dusty, abrasive bulk cargo environment. The high core-count configurations (16\u201330 cores) accommodate the complex control wiring required for grab bucket operation, hoisting, trolley travel, and safety interlock circuits.<\/p>\n\n    <h3>Rail-Mounted Gantry Cranes (RMG\/RTG)<\/h3>\n    <p>Container yard gantry cranes use festoon cables along the gantry rail for power supply to the gantry drive and container handling spreader. The WS-FSTN-2PNCT-SB cable&#8217;s flame retardancy (JIS C 3005) is essential for gantry cranes operating in close proximity to container stacks, where fire propagation risk must be minimized.<\/p>\n\n    <h3>Cable Chain (Energy Chain) Systems<\/h3>\n    <p>The WS-FSTN-2PNCT-SB is fully compatible with cable chain (energy chain) systems. The cable&#8217;s minimum bending radius of 6\u00d7OD matches standard energy chain bend radii, and the flexible Class 5 conductor stranding ensures long flex life under the guided-bending conditions of cable chain operation. The extensive core-count range allows a single cable chain to carry power, control, and signal circuits in separate cables of the same product family.<\/p>\n\n    <h3>General Industrial Overhead Cranes<\/h3>\n    <p>Beyond port applications, the WS-FSTN-2PNCT-SB is used on industrial overhead cranes in steel mills, automotive manufacturing plants, power stations, and warehouse logistics systems. The \u221240\u00b0C to +90\u00b0C temperature range accommodates both cold-storage environments and high-temperature industrial settings.<\/p>\n\n  <\/section>\n\n  <!-- ===== S10 ===== -->\n  <section class=\"body\" id=\"s10\">\n    <h2>Environmental Performance: Oil, Ozone, UV &#038; Coastal Conditions<\/h2>\n\n    <p>The WS-FSTN-2PNCT-SB cable&#8217;s outer sheath is formulated from a <strong>special chloroprene rubber (CR) compound<\/strong> providing comprehensive multi-threat environmental protection for permanent outdoor installation in coastal port and industrial environments.<\/p>\n\n    <div class=\"tw\">\n      <table>\n        <caption>Environmental Resistance Summary<\/caption>\n        <thead><tr><th>Environmental Threat<\/th><th>Protection Mechanism<\/th><th>Compliance Standard<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>Mineral oils &#038; hydraulic fluids<\/td><td>CR rubber sheath formulation resists swelling and degradation<\/td><td>JIS C 3005<\/td><\/tr>\n          <tr><td>Ozone degradation<\/td><td>Ozone stabilizers in CR rubber compound prevent surface cracking<\/td><td>Weather rated<\/td><\/tr>\n          <tr><td>UV radiation<\/td><td>UV absorbers in sheath polymer prevent brittleness and chain scission<\/td><td>Outdoor certified<\/td><\/tr>\n          <tr><td>Saltwater spray<\/td><td>CR sheath impervious to salt; tinned copper braid resists corrosion<\/td><td>Coastal rated<\/td><\/tr>\n          <tr><td>Abrasive dust (coal, ore, grain)<\/td><td>Abrasion-resistant CR rubber compound<\/td><td>JIS C 3327 Table 6.12<\/td><\/tr>\n          <tr><td>Flame \/ fire<\/td><td>Self-extinguishing CR rubber formulation<\/td><td>JIS C 3005<\/td><\/tr>\n          <tr><td>Extreme cold (\u221240\u00b0C)<\/td><td>CR rubber maintains flexibility at cryogenic temperatures<\/td><td>Full rated operation<\/td><\/tr>\n          <tr><td>Extreme heat (+90\u00b0C)<\/td><td>Cross-linked elastomer insulation maintains dielectric integrity<\/td><td>Full rated operation<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S11 ===== -->\n  <section class=\"body\" id=\"s11\">\n    <h2>Festoon System Design Considerations<\/h2>\n\n    <h3>Cable Selection by Circuit Function<\/h3>\n    <p>A well-designed festoon system assigns cable types by circuit function: <strong>single-core cables<\/strong> for power distribution (trolley drive, hoist motor) and discrete control signals (relay outputs, limit switches, indicator lamps), and <strong>paired-core cables<\/strong> for analogue measurements (load cells, wind sensors, position transducers) and digital communication (RS-485 fieldbus, encoder feedback). This separation minimises electromagnetic crosstalk between circuits and simplifies troubleshooting and maintenance.<\/p>\n\n    <h3>Hanger Spacing &#038; Sag Calculation<\/h3>\n    <p>Cable weight (from the specification tables) determines the sag profile between festoon hangers. Heavier cables (higher core counts, larger conductors) require closer hanger spacing to maintain acceptable sag. The sag formula for uniformly distributed load is: <strong>S = (w \u00d7 L\u00b2) \/ (8 \u00d7 T)<\/strong>, where S is sag (m), w is cable weight per metre (kg\/m), L is span between hangers (m), and T is cable tension (kg). Consult the crane manufacturer&#8217;s festoon system design manual for maximum permissible sag values.<\/p>\n\n    <h3>Multi-Cable Festoon Arrangements<\/h3>\n    <p>Large cranes typically run 4\u20138 cables in parallel on the festoon system. The WS-FSTN-2PNCT-SB&#8217;s tinned copper shield braid ensures that power cables do not radiate EMI into adjacent signal cables. When running power and signal cables on the same festoon, maintain minimum separation distances as specified by the crane manufacturer&#8217;s EMC design guidelines \u2014 typically 50\u2013100 mm between power and signal cable groups.<\/p>\n\n    <h3>Minimum Bending Radius Compliance<\/h3>\n    <p>The cable&#8217;s minimum bending radius of <strong>6\u00d7OD<\/strong> must be maintained at all points: festoon hanger saddles, cable chain bend sections, junction box entries, and cable reel drums. For the largest cable in the range (30-core \u00d7 3.5 mm\u00b2, OD = 35.0 mm), the minimum bending radius is 210 mm. Verify that all festoon system components accommodate this radius.<\/p>\n\n  <\/section>\n\n  <!-- ===== S12 ===== -->\n  <section class=\"body\" id=\"s12\">\n    <h2>WS-FSTN-2PNCT-SB vs. WS-FSTN-2PNCT-PSB: Choosing the Right Cable<\/h2>\n\n    <p>Feichun offers two festoon cable families under the WALSTOON\u00ae brand. The <strong>WS-FSTN-2PNCT-SB<\/strong> (this cable) and the <strong>WS-FSTN-2PNCT-PSB<\/strong> (Kevlar\u00ae para-aramid fibre reinforced) serve different requirements within the same festoon system.<\/p>\n\n    <div class=\"tw\">\n      <table>\n        <caption>WS-FSTN-2PNCT-SB vs. WS-FSTN-2PNCT-PSB Feature Comparison<\/caption>\n        <thead><tr><th>Feature<\/th><th>WS-FSTN-2PNCT-SB (This Cable)<\/th><th>WS-FSTN-2PNCT-PSB (Kevlar\u00ae)<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td>Tensile Reinforcement<\/td><td>Tinned copper shield braid (standard)<\/td><td><strong>Kevlar\u00ae para-aramid fibre braided layer<\/strong><\/td><\/tr>\n          <tr><td>Configuration Range<\/td><td><strong>Widest: 2\u201330 cores + 2P\u20138P<\/strong><\/td><td>Paired only: 2P\u201312P<\/td><\/tr>\n          <tr><td>Conductor Size Range<\/td><td><strong>0.75\u20133.5 mm\u00b2<\/strong><\/td><td>1.25\u20133.5 mm\u00b2<\/td><\/tr>\n          <tr><td>Tensile Strength<\/td><td>Standard (cable self-weight + moderate dynamic)<\/td><td><strong>Extreme (5\u00d7 steel strength-to-weight)<\/strong><\/td><\/tr>\n          <tr><td>Shock Absorption<\/td><td>Standard<\/td><td><strong>Excellent (Kevlar\u00ae energy absorption ~60 J\/g)<\/strong><\/td><\/tr>\n          <tr><td>Weight<\/td><td>Standard<\/td><td><strong>20\u201335% lighter<\/strong> (comparable configs)<\/td><\/tr>\n          <tr><td>Best For<\/td><td><strong>Control, signal, and general power circuits<\/strong><\/td><td><strong>Long-span, high-speed, heavy-duty festoon runs<\/strong><\/td><\/tr>\n          <tr><td>Typical Use<\/td><td>Multi-core control cables, signal pairs, moderate-span festoon<\/td><td>Primary power festoon on STS cranes, long-span ship unloaders<\/td><\/tr>\n          <tr><td>Cost<\/td><td><strong>Lower<\/strong><\/td><td>Higher (Kevlar\u00ae material premium)<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <div class=\"note green\">\n      <div class=\"nt\">Recommended Combination Approach<\/div>\n      <p>Most crane festoon systems benefit from using <strong>both cable families together<\/strong>: WS-FSTN-2PNCT-PSB (Kevlar\u00ae reinforced) for the primary power festoon cable that spans the full boom length and experiences the highest tensile and dynamic loads, and WS-FSTN-2PNCT-SB for the control and signal cables that run alongside the power cable on the same festoon hangers. This combination delivers maximum tensile performance where it matters most (the heavy, long-span power cable) while optimising cost on the lighter control and signal cables where extreme tensile strength is not required. Contact Feichun&#8217;s application engineering team for a complete festoon cable schedule recommendation.<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S13 ===== -->\n  <section class=\"body\" id=\"s13\">\n    <h2>Cost-Effective Feichun Equivalent<\/h2>\n\n    <p><strong>Feichun Lead Times:<\/strong> 3\u20135 weeks for standard WS-FSTN-2PNCT-SB configurations (wider range than PSB variant, shorter lead time due to simpler construction). Japanese OEM suppliers: 10\u201316 weeks.<\/p>\n\n    <p><strong>Feichun Pricing:<\/strong> Japanese OEM 12-core \u00d7 2 mm\u00b2 festoon cable quoted at \u00a52,800\u20133,600\/metre; Feichun equivalent: \u00a51,400\u20131,900\/metre. Per 200-metre crane installation: savings of \u00a5280,000\u2013\u00a5340,000 per cable run.<\/p>\n\n    <div class=\"note green\">\n      <div class=\"nt\">Real Procurement Success Story<\/div>\n      <p><strong>Case Study: Middle East Bulk Terminal:<\/strong> A bulk cargo terminal operator replacing festoon cables on 4 grab-type ship unloaders needed 3,600 metres total across 8 cable specifications (ranging from 4-core \u00d7 3.5 mm\u00b2 power cables to 6P \u00d7 1.25 mm\u00b2 signal cables). Japanese OEM quoted $420,000 with 14-week delivery for the complete cable package. Feichun quoted $215,000 with 4-week delivery. All specifications underwent independent laboratory testing: conductor resistance within \u00b12% of nominal, insulation resistance exceeding minimum values by 15\u201325%, shield braid coverage confirmed >90%, outer sheath oil immersion test (72 hours in IRM 903 reference oil at 100\u00b0C) passed with <15% tensile strength change. Total savings: $205,000 with 10 weeks faster delivery. The unloaders were back in service before the start of the coal import season.<\/p>\n    <\/div>\n\n    <div class=\"note amber\">\n      <div class=\"nt\">Custom Configurations Available<\/div>\n      <p>Feichun manufactures WS-FSTN-2PNCT-SB equivalent cables in extended configurations beyond the standard range: <strong>core counts up to 50<\/strong> for complex multi-circuit crane control systems, <strong>conductor sizes up to 10 mm\u00b2<\/strong> for high-current trolley power supply, <strong>hybrid power + signal<\/strong> cables combining large-gauge power cores with small-gauge signal pairs in a single sheath, <strong>individually shielded pairs<\/strong> for maximum EMI isolation on critical signal circuits, and <strong>fire-resistant (IEC 60331)<\/strong> variants for safety-critical crane control cables requiring circuit integrity during fire. Contact the engineering department for specifications.<\/p>\n    <\/div>\n\n  <\/section>\n\n  <!-- ===== S14 ===== -->\n  <section class=\"body\" id=\"s14\">\n    <h2>Technical FAQ<\/h2>\n\n    <h3>What is the difference between WS-FSTN-2PNCT-SB and WS-FSTN-2PNCT-PSB?<\/h3>\n    <p>The SB variant uses a standard tinned copper shield braid and offers the widest range of configurations (2\u201330 single cores plus 2P\u20138P paired cores). The PSB variant adds a Kevlar\u00ae para-aramid fibre braided tensile reinforcement layer for extreme tensile strength, but is available only in paired-core configurations (2P\u201312P). Use SB for control and signal circuits; use PSB for long-span, high-load power festoon runs. Most crane festoon systems use both cables together.<\/p>\n\n    <h3>Why does the shield braid thickness change from 0.3 mm to 0.45 mm on larger cables?<\/h3>\n    <p>Shielding effectiveness depends on braid coverage density \u2014 the percentage of the cable circumference covered by braid wires. As cable diameter increases (more cores, larger conductors), a thicker braid is required to maintain consistent coverage density. The 0.45 mm braid on larger cables provides the same >90% coverage as the 0.3 mm braid on smaller cables, ensuring uniform EMI shielding performance across the entire product range.<\/p>\n\n    <h3>Can single-core and paired-core variants be used on the same festoon system?<\/h3>\n    <p>Yes \u2014 this is the recommended approach. Single-core cables carry power and discrete control signals; paired-core cables carry analogue measurements and digital communication. Both variants share the same outer sheath material, temperature rating, minimum bending radius (6\u00d7OD), and environmental resistance, ensuring mechanical compatibility on the same festoon trolley and hanger system.<\/p>\n\n    <h3>What is the expected flex life?<\/h3>\n    <p>Laboratory testing at 6\u00d7OD bending radius achieves >5 million flex cycles without conductor failure for single-core variants and >5 million cycles for paired-core variants. In typical crane service (200 trolley cycles per shift, 300 operating days per year), this translates to approximately 8\u201312+ years of operational life, depending on installation quality and environmental conditions.<\/p>\n\n    <h3>Is this cable suitable for variable-frequency drive (VFD) motor circuits?<\/h3>\n    <p>The WS-FSTN-2PNCT-SB is suitable for VFD encoder feedback and control signals (using paired-core variants). For VFD power output to motor, a dedicated VFD-rated power cable with symmetrical ground conductors is typically recommended \u2014 consult the VFD manufacturer&#8217;s cable specifications. The WS-FSTN-2PNCT-SB can carry VFD supply power (line side) in the single-core variants.<\/p>\n\n    <h3>Are 0.75 mm\u00b2 conductors sufficient for crane control circuits?<\/h3>\n    <p>Yes \u2014 0.75 mm\u00b2 conductors are suitable for low-current discrete control signals (limit switches, proximity sensors, indicator lamps, relay coil circuits) where the current draw is typically &lt;1 A per circuit. For higher-current circuits (contactor coils, solenoid valves, motor brakes), use 1.25 mm\u00b2 or 2 mm\u00b2 conductors. For power circuits (trolley drive, hoist motor supply), use 3.5 mm\u00b2 or larger in the single-core variants.<\/p>\n\n  <\/section>\n\n  <!-- ===== S15 ===== -->\n  <section class=\"refs\" id=\"s15\">\n    <h2>References &#038; Standards<\/h2>\n    <ol class=\"rl\">\n      <li>JIS C 3327, <em>Rubber-Insulated Cabtyre Cables \u2014 Requirements and test methods for heavy-duty flexible cables<\/em>.<\/li>\n      <li>JIS C 3005, <em>Test methods for rubber and plastics insulated wires and cables \u2014 Flame, oil resistance, and mechanical tests<\/em>.<\/li>\n      <li>IEC 60228, <em>Conductors of insulated cables \u2014 Class 5 (flexible) stranding requirements<\/em>.<\/li>\n      <li>IEC 60227-2, <em>Polyvinyl chloride insulated cables \u2014 Test methods for repeated bending<\/em>.<\/li>\n      <li>IEC 61000-5-2, <em>Electromagnetic compatibility \u2014 Installation and mitigation guidelines \u2014 Earthing and cabling<\/em>.<\/li>\n      <li>IEC 60332-1-2, <em>Vertical flame propagation test on single insulated wires or cables<\/em>.<\/li>\n      <li>IEC 60331, <em>Fire resistance test for electric cables \u2014 Circuit integrity<\/em>.<\/li>\n      <li>ASTM B117, <em>Standard Practice for Operating Salt Spray (Fog) Apparatus<\/em>.<\/li>\n      <li>FEM 1.001, <em>Rules for the Design of Hoisting Appliances \u2014 Section IV: Electrical Equipment of Cranes<\/em>.<\/li>\n    <\/ol>\n  <\/section>\n\n  <div class=\"contact\">\n    <h3>Contact Anhui Feichun Special Cable Co., Ltd. \u2014 Port Crane &#038; Industrial Festoon Cable Specialists<\/h3>\n    <div class=\"cg\">\n      <div class=\"ci\"><span class=\"lb\">Technical Specifications &#038; Application Engineering<\/span><a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a><\/div>\n      <div class=\"ci\"><span class=\"lb\">Port Equipment Cable Procurement &#038; Bulk Orders<\/span><a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a><\/div>\n      <div class=\"ci\"><span class=\"lb\">WhatsApp &#038; WeChat<\/span>+86 138 5512 3218<\/div>\n    <\/div>\n  <\/div>\n\n  <footer class=\"ft\">\n    <p>This technical guide describes Feichun&#8217;s WALSTOON\u00ae WS-FSTN-2PNCT-SB festoon system flexible cable featuring tinned copper shield braid, JIS C 3327 compliance, AC 600V rating, \u221240\u00b0C to +90\u00b0C operating range, single-core (2\u201330 cores) and paired-core (2P\u20138P) configurations, and comprehensive environmental resistance for port gantry crane, ship unloader, cable chain, and industrial overhead crane applications. WALSTOON\u00ae is a trademark of Anhui Feichun Special Cable Co., Ltd. Specifications subject to manufacturing tolerances. \u00a9 2026 Anhui Feichun Special Cable Co., Ltd. All rights reserved.<\/p>\n  <\/footer>\n\n<\/div>\n<\/body>\n<\/html>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/WS-FSTN-2PNCT-SB_Technical_Manual.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"\u5d4c\u5165 WS-FSTN-2PNCT-SB_Technical_Manual\"><\/object><a id=\"wp-block-file--media-dc5cafe2-3b49-487c-ad8b-d11ff0551983\" href=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/WS-FSTN-2PNCT-SB_Technical_Manual.pdf\">WS-FSTN-2PNCT-SB_Technical_Manual<\/a><a href=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/WS-FSTN-2PNCT-SB_Technical_Manual.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-dc5cafe2-3b49-487c-ad8b-d11ff0551983\">\u4e0b\u8f7d<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"WS-FSTN-2PNCT-SB is a comprehensive-range festoon system flexible cable designed to meet the diverse wiring requirements of port gantry cranes, ship unloaders, cable chain systems, and industrial overhead crane applications. While its sibling product \u2014 the WS-FSTN-2PNCT-PSB \u2014 features Kevlar\u00ae para-aramid fibre reinforcement for extreme tensile applications, the WS-FSTN-2PNCT-SB focuses on delivering the widest possible range of core configurations with reliable tinned copper shield braiding, covering everything from compact 2-core signal cables to high-density 30-core multi-circuit cables and paired-core variants for balanced signal transmission.","protected":false},"author":1,"featured_media":10255,"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":[35,464,56],"tags":[2600,2748,771,51926,51933,5327,51931,4616,26502,51934,9323,996,998,16401,1086,787,48949,36,1685,45455,2695,1012,51929,51938,2785,32146,16061,3080,465,3036,51927,26350,51939,796,51936,788,51932,2531,3311,2651,17,51935,2434,51937,1039,2782,2604,808,51930,4309,51928],"class_list":["post-10254","post","type-post","status-publish","format-standard","has-post-thumbnail","category-festoon-cable","category-flexible-cables-with-high-bending-life-and-fatigue-resistance","category-reeling-cable","tag-2pnct-cable","tag-600v-festoon-cable","tag-abrasion-resistant-cable","tag-aramid-fibre-cable","tag-braided-tensile-layer-cable","tag-bulk-material-handling-cable","tag-bulletproof-cable","tag-cable-chain-cable","tag-cable-trolley-cable","tag-coal-unloader-cable","tag-coastal-environment-cable","tag-container-crane-cable","tag-crane-cable","tag-crane-control-cable","tag-emi-shielded-cable","tag-energy-chain-cable","tag-feichun-festoon-cable","tag-festoon-cable","tag-festoon-system-cable","tag-flame-retardant-crane-cable","tag-flexible-crane-cable","tag-gantry-crane-cable","tag-grab-ship-unloader-cable","tag-grain-unloader-cable","tag-harbor-crane-cable","tag-heavy-duty-festoon-cable","tag-high-tensile-cable","tag-japanese-standard-cable","tag-jis-c-3327","tag-jis-standard-cable","tag-kevlar-cable","tag-kevlar-reinforced-cable","tag-minus-40-degree-cable","tag-oil-resistant-cable","tag-ore-unloader-cable","tag-ozone-resistant-cable","tag-para-aramid-cable","tag-port-crane-cable","tag-port-equipment-cable","tag-quay-crane-cable","tag-reeling-cable","tag-rubber-sheathed-festoon-cable","tag-salt-spray-resistant-cable","tag-shielded-pair-cable","tag-ship-to-shore-crane-cable","tag-ship-unloader-cable","tag-sts-crane-cable","tag-uv-resistant-cable","tag-walstoon-cable","tag-wharf-crane-cable","tag-ws-fstn-2pnct-psb","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/10254","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=10254"}],"version-history":[{"count":1,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/10254\/revisions"}],"predecessor-version":[{"id":10258,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/10254\/revisions\/10258"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/10255"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=10254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=10254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=10254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}