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cable chain cable

21 Min Read
600V 2TC Light-SB (600V 2PNCT-SB) cable solves this problem. Built on the same proven JIS C 3327 platform as the unshielded 2TC Light, it adds a critical engineering layer: a tinned copper wire braided combined with cotton yarn shielding that surrounds the insulated conductor bundle. This hybrid metallic/textile braid provides effective EMI containment across the full VFD emission spectrum, preventing radiated noise from escaping power cables and protecting control cables from external interference. Combined with the Kevlar® para-aramid fibre braided tensile reinforcement for mechanical load bearing, the 2TC Light-SB delivers both electromagnetic cleanliness and structural durability in a single cable design purpose-built for the electrical and mechanical demands of modern VFD-controlled port cranes.
Technical Department
on13/04/2026

600V 2TC Light-SB (2PNCT-SB) Shielded Crane Cable

600V 2TC Light-SB (600V 2PNCT-SB) cable solves this problem. Built on the same proven JIS C 3327 platform as the unshielded 2TC Light, it adds a critical engineering layer: a tinned copper wire braided combined with cotton yarn shielding that surrounds the insulated conductor bundle. This hybrid metallic/textile braid provides effective EMI containment across the full VFD emission spectrum, preventing radiated noise from escaping power cables and protecting control cables from external interference. Combined with the Kevlar® para-aramid fibre braided tensile reinforcement for mechanical load bearing, the 2TC Light-SB delivers both electromagnetic cleanliness and structural durability in a single cable design purpose-built for the electrical and mechanical demands of modern VFD-controlled port cranes.
19 Min Read
The 600V 2TC Light (600V 2PNCT) cable, manufactured to the Japanese Industrial Standard JIS C 3327, represents one of the most proven and widely deployed cable designs for port crane and ship unloader applications worldwide. This cable combines ethylene propylene (EP) rubber insulation for superior dielectric performance, polychloroprene rubber sheathing for environmental protection, and—critically—a Kevlar® para-aramid fibre braided tensile reinforcement layer that transforms the cable from a simple electrical conductor into a load-bearing mechanical component capable of supporting its own weight and absorbing the extreme dynamic forces generated by crane operation.
Technical Department
on13/04/2026

600V 2TC Light (2PNCT) Kevlar®-Reinforced Crane Cable

The 600V 2TC Light (600V 2PNCT) cable, manufactured to the Japanese Industrial Standard JIS C 3327, represents one of the most proven and widely deployed cable designs for port crane and ship unloader applications worldwide. This cable combines ethylene propylene (EP) rubber insulation for superior dielectric performance, polychloroprene rubber sheathing for environmental protection, and—critically—a Kevlar® para-aramid fibre braided tensile reinforcement layer that transforms the cable from a simple electrical conductor into a load-bearing mechanical component capable of supporting its own weight and absorbing the extreme dynamic forces generated by crane operation.
10 Min Read
crane cable range is a complete family of six specialised cable types engineered to cover every electrical and data connection on modern port cranes — from the simplest yard crane spreader circuit to the most complex automated STS crane with integrated fibre optic networking. The family is divided into two series: the WS-RLIN series for motorised cable reel systems, and the WS-SPRD series for gravity collector basket (festoon basket) systems. Every cable in the range shares a common engineering foundation: JIS C 3327 compliance for rubber-insulated machinery cables, chloroprene rubber (CR) sheathing for oil/ozone/UV resistance, EPR insulation rated to 90°C, and an ambient temperature range of −40°C to +90°C that covers every port environment on earth from arctic to tropical. Within this shared foundation, each cable type is differentiated by its reinforcement system, voltage class, conductor range, and application-specific optimisations.
Technical Department
on13/04/2026

WALSREEN® Complete Port Crane Cable Range

crane cable range is a complete family of six specialised cable types engineered to cover every electrical and data connection on modern port cranes — from the simplest yard crane spreader circuit to the most complex automated STS crane with integrated fibre optic networking. The family is divided into two series: the WS-RLIN series for motorised cable reel systems, and the WS-SPRD series for gravity collector basket (festoon basket) systems. Every cable in the range shares a common engineering foundation: JIS C 3327 compliance for rubber-insulated machinery cables, chloroprene rubber (CR) sheathing for oil/ozone/UV resistance, EPR insulation rated to 90°C, and an ambient temperature range of −40°C to +90°C that covers every port environment on earth from arctic to tropical. Within this shared foundation, each cable type is differentiated by its reinforcement system, voltage class, conductor range, and application-specific optimisations.
19 Min Read
WS-SPRD-HEXNCT was engineered specifically for this extreme duty class. Its defining characteristic is the HEXNCT enhanced chloroprene rubber sheath — a heavy-duty outer layer with thickness ranging from 4.5 mm to 5.1 mm, representing a 36–38% increase over the standard WS-SPRD-2PNCT's 3.3–3.7 mm sheath. This enhanced sheath provides a dramatically larger abrasion wear allowance at basket carrier contact points, greater resistance to mechanical impact from falling debris, and a more robust barrier against the chemical and environmental hazards of the container crane operating environment.
Technical Department
on13/04/2026

WALSREEN® WS-SPRD-HEXNCT Spreader Basket System Flexible Cable

WS-SPRD-HEXNCT was engineered specifically for this extreme duty class. Its defining characteristic is the HEXNCT enhanced chloroprene rubber sheath — a heavy-duty outer layer with thickness ranging from 4.5 mm to 5.1 mm, representing a 36–38% increase over the standard WS-SPRD-2PNCT’s 3.3–3.7 mm sheath. This enhanced sheath provides a dramatically larger abrasion wear allowance at basket carrier contact points, greater resistance to mechanical impact from falling debris, and a more robust barrier against the chemical and environmental hazards of the container crane operating environment.
20 Min Read
WS-SPRD-2PNCT was engineered specifically for this unforgiving application. It combines high-core-count construction (30, 36, or 42 cores at 3.5 mm²) to carry the full complement of spreader control and signal circuits in a single cable, steel-wire-stranded conductors for tension resistance under self-weight suspension, chloroprene rubber sheathing for oil, ozone, and UV resistance in coastal port environments, and a cable geometry specifically optimised for the continuous lateral bending and catenary formation cycles unique to gravity collector basket systems. Manufactured to dual standards — JIS C 3327 (rubber-insulated machinery cables) and VDE 0250-813 (flexible cables) — the WS-SPRD-2PNCT represents dedicated engineering for a niche but mission-critical application. A failed spreader basket cable means a stopped crane, a grounded spreader, and halted container operations. There is no redundancy — the cable is the sole electrical lifeline between the crane's trolley and the spreader that grips the containers.
Technical Department
on13/04/2026

WALSREEN® WS-SPRD-2PNCT Spreader Basket System Flexible Cable

WS-SPRD-2PNCT was engineered specifically for this unforgiving application. It combines high-core-count construction (30, 36, or 42 cores at 3.5 mm²) to carry the full complement of spreader control and signal circuits in a single cable, steel-wire-stranded conductors for tension resistance under self-weight suspension, chloroprene rubber sheathing for oil, ozone, and UV resistance in coastal port environments, and a cable geometry specifically optimised for the continuous lateral bending and catenary formation cycles unique to gravity collector basket systems. Manufactured to dual standards — JIS C 3327 (rubber-insulated machinery cables) and VDE 0250-813 (flexible cables) — the WS-SPRD-2PNCT represents dedicated engineering for a niche but mission-critical application. A failed spreader basket cable means a stopped crane, a grounded spreader, and halted container operations. There is no redundancy — the cable is the sole electrical lifeline between the crane’s trolley and the spreader that grips the containers.
25 Min Read
WS-RLIN-3PNCT-OF is the engineering answer to this convergence challenge. It integrates three-phase medium-voltage power conductors (3 × 38–60 mm² at AC 6,600 V) with a dedicated neutral/earth return conductor and six optical fibres housed in individually colour-coded ETFE protective tubes — all within a single Kevlar®-reinforced, chloroprene-sheathed cable construction. This hybrid design eliminates the need for separate power and fibre optic cables on the reel system, reducing reel complexity, installation time, maintenance burden, and total cable weight, while ensuring perfect synchronisation between power and data paths — because both travel through the same physical cable at all times.
Technical Department
on13/04/2026

WALSREEN® WS-RLIN-3PNCT-OF Hybrid Power & Fibre Optic Reel System Flexible Cable

WS-RLIN-3PNCT-OF is the engineering answer to this convergence challenge. It integrates three-phase medium-voltage power conductors (3 × 38–60 mm² at AC 6,600 V) with a dedicated neutral/earth return conductor and six optical fibres housed in individually colour-coded ETFE protective tubes — all within a single Kevlar®-reinforced, chloroprene-sheathed cable construction. This hybrid design eliminates the need for separate power and fibre optic cables on the reel system, reducing reel complexity, installation time, maintenance burden, and total cable weight, while ensuring perfect synchronisation between power and data paths — because both travel through the same physical cable at all times.
19 Min Read
WS-RLIN-2PNCT-KB was engineered specifically to solve this challenge. Its defining innovation is a Kevlar® aramid fibre reinforcing layer — the same poly-paraphenylene terephthalamide material used in military-grade ballistic body armour — woven into a proprietary helical braid pattern that distributes tensile load uniformly across the cable's cross-section. This Kevlar reinforcement delivers tensile strength comparable to steel braid at a fraction of the weight, eliminates the fatigue-induced wire breakage that plagues conventional steel-armoured reeling cables, and maintains exceptional flexibility throughout the cable's operational life.
Technical Department
on13/04/2026

WALSREEN® WS-RLIN-2PNCT-KB Reel System Flexible Cable

WS-RLIN-2PNCT-KB was engineered specifically to solve this challenge. Its defining innovation is a Kevlar® aramid fibre reinforcing layer — the same poly-paraphenylene terephthalamide material used in military-grade ballistic body armour — woven into a proprietary helical braid pattern that distributes tensile load uniformly across the cable’s cross-section. This Kevlar reinforcement delivers tensile strength comparable to steel braid at a fraction of the weight, eliminates the fatigue-induced wire breakage that plagues conventional steel-armoured reeling cables, and maintains exceptional flexibility throughout the cable’s operational life.
19 Min Read
FSTN-OFNCT is a high-performance optical fiber flexible cable designed specifically for signal and data transmission on port cranes, ship unloaders, container gantry cranes, and heavy-duty material handling equipment. Unlike conventional industrial fibre optic cables that rely on standard polymer or steel-wire tensile members, the WS-FSTN-OFNCT incorporates a Kevlar® (para-aramid) fibre reinforcement layer—the same ballistic-grade material used in bulletproof vests and military-grade protective equipment—braided in a proprietary pattern that delivers exceptional tensile strength while preserving the cable's full flexibility under continuous reeling and festoon operation.
Technical Department
on13/04/2026

Kevlar® Aramid Fibre Reinforced Optical Fiber Flexible Cable with Specially Braided Tensile Layer for Signal and Data Transmission on Port Cranes, Ship Unloaders, Container Gantry Cranes, and Heavy-Duty Material Handling Equipment — Engineered for Cable Reel Systems, Festoon Systems, and Continuous Flexing Applications with Graded Index 50/125, 62.5/125, and Singlemode E9/125 Fibre Options

FSTN-OFNCT is a high-performance optical fiber flexible cable designed specifically for signal and data transmission on port cranes, ship unloaders, container gantry cranes, and heavy-duty material handling equipment. Unlike conventional industrial fibre optic cables that rely on standard polymer or steel-wire tensile members, the WS-FSTN-OFNCT incorporates a Kevlar® (para-aramid) fibre reinforcement layer—the same ballistic-grade material used in bulletproof vests and military-grade protective equipment—braided in a proprietary pattern that delivers exceptional tensile strength while preserving the cable’s full flexibility under continuous reeling and festoon operation.
7 Min Read
WS-FSTN-3PNCT fills a critical gap in the festoon cable product range: it provides the mechanical reinforcement of 3PNCT construction — the dedicated textile reinforcing layer that protects against impact, crush, and abrasion — without the weight and cost of a metallic shield braid. This makes it the optimal choice for power distribution and discrete control circuits in harsh mechanical environments where EMI shielding is not required but standard 2PNCT cables cannot survive.
Technical Department
on10/04/2026

WALSTOON® WS-FSTN-3PNCT Festoon System Flexible Cable

WS-FSTN-3PNCT fills a critical gap in the festoon cable product range: it provides the mechanical reinforcement of 3PNCT construction — the dedicated textile reinforcing layer that protects against impact, crush, and abrasion — without the weight and cost of a metallic shield braid. This makes it the optimal choice for power distribution and discrete control circuits in harsh mechanical environments where EMI shielding is not required but standard 2PNCT cables cannot survive.
11 Min Read
WS-FSTN-3PNCT-SB represents the premium tier of the WALSTOON festoon cable family — a cable engineered for applications where standard 2PNCT construction does not provide sufficient mechanical protection. The critical difference is in the designation: 3PNCT versus 2PNCT. The "3" indicates a three-layer sheathing system that includes a dedicated textile reinforcing layer between the core bundle and the outer sheath — a layer that the standard 2PNCT construction does not have. In practice, this reinforcing layer transforms the cable from a flexible electrical conductor into a mechanically reinforced structure that resists impact damage, crushing forces, abrasion penetration, and tensile stress far beyond the capability of standard 2PNCT cables. When a festoon cable runs through a harsh environment — exposed to falling debris from bulk cargo operations, crushed between moving crane structures, subjected to extreme tensile loading during emergency stops, or dragged across abrasive steel surfaces — the reinforcing layer provides the mechanical margin of safety that prevents cable failure. Combined with the tinned copper shield braid for EMI protection, the WS-FSTN-3PNCT-SB delivers dual-layer protection: electromagnetic shielding for signal integrity, and mechanical reinforcement for physical survivability. This combination makes it the cable of choice for the most demanding festoon system positions — particularly on grab-type ship unloaders, heavy-duty overhead cranes in steel mills and foundries, and any application where the cable is exposed to significant mechanical abuse beyond normal festoon system operation.
Technical Department
on10/04/2026

WALSTOON® WS-FSTN-3PNCT-SB Festoon System Flexible Cable

WS-FSTN-3PNCT-SB represents the premium tier of the WALSTOON festoon cable family — a cable engineered for applications where standard 2PNCT construction does not provide sufficient mechanical protection. The critical difference is in the designation: 3PNCT versus 2PNCT. The “3” indicates a three-layer sheathing system that includes a dedicated textile reinforcing layer between the core bundle and the outer sheath — a layer that the standard 2PNCT construction does not have. In practice, this reinforcing layer transforms the cable from a flexible electrical conductor into a mechanically reinforced structure that resists impact damage, crushing forces, abrasion penetration, and tensile stress far beyond the capability of standard 2PNCT cables. When a festoon cable runs through a harsh environment — exposed to falling debris from bulk cargo operations, crushed between moving crane structures, subjected to extreme tensile loading during emergency stops, or dragged across abrasive steel surfaces — the reinforcing layer provides the mechanical margin of safety that prevents cable failure. Combined with the tinned copper shield braid for EMI protection, the WS-FSTN-3PNCT-SB delivers dual-layer protection: electromagnetic shielding for signal integrity, and mechanical reinforcement for physical survivability. This combination makes it the cable of choice for the most demanding festoon system positions — particularly on grab-type ship unloaders, heavy-duty overhead cranes in steel mills and foundries, and any application where the cable is exposed to significant mechanical abuse beyond normal festoon system operation.
10 Min Read
WS-FSTN-2PNCT is the foundation cable of the WALSTOON festoon system product family — a high-performance, unshielded, rubber-insulated flexible cable engineered for the demanding mechanical and environmental conditions of port gantry cranes, ship unloaders, cable chain systems, and industrial overhead cranes. With the widest configuration range in the WALSTOON product line — from single-conductor 250 mm² power cables capable of carrying hundreds of amperes to compact 30-core × 0.75 mm² multi-circuit control cables — the WS-FSTN-2PNCT addresses every power distribution and discrete control requirement on a crane festoon system.
Technical Department
on10/04/2026

WALSTOON® WS-FSTN-2PNCT Festoon System Flexible Cable

WS-FSTN-2PNCT is the foundation cable of the WALSTOON festoon system product family — a high-performance, unshielded, rubber-insulated flexible cable engineered for the demanding mechanical and environmental conditions of port gantry cranes, ship unloaders, cable chain systems, and industrial overhead cranes. With the widest configuration range in the WALSTOON product line — from single-conductor 250 mm² power cables capable of carrying hundreds of amperes to compact 30-core × 0.75 mm² multi-circuit control cables — the WS-FSTN-2PNCT addresses every power distribution and discrete control requirement on a crane festoon system.
14 Min Read
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 — the WS-FSTN-2PNCT-PSB — features Kevlar® 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.
Technical Department
on10/04/2026

WALSTOON® WS-FSTN-2PNCT-SB Festoon System Flexible Cable

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 — the WS-FSTN-2PNCT-PSB — features Kevlar® 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.
16 Min Read
Festoon cables on port gantry cranes and ship unloaders endure some of the most punishing operating conditions in industrial cable engineering. Every time the crane trolley travels along its rail, the festoon cable is dragged, flexed, accelerated, and decelerated across spans of 100–300 metres. The cable must support its own suspended weight between trolley hangers, absorb dynamic shock loads during emergency stops, withstand continuous wind-induced vibration in exposed coastal environments, and resist the corrosive effects of saltwater spray, UV radiation, and airborne industrial contaminants — all while maintaining electrical continuity and signal integrity for safety-critical crane control systems.
Technical Department
on10/04/2026

WALSTOON® WS-FSTN-2PNCT-PSB Festoon System Flexible Cable

AC 600V Festoon System Flexible Cable with Kevlar® Para-Aramid Fibre Braided Tensile Reinforcement Layer, JIS C 3327 Compliant, −40°C to +90°C Operating Range, Oil-Resistant, Flame-Retardant — Engineered for Port Gantry Cranes, Ship-to-Shore Unloaders, Container Handling Equipment, and Heavy-Duty Cable Chain Applications
13 Min Read
Longwall mining represents the most productive underground coal extraction method available to modern mining operations, with a single longwall face capable of producing over 5,000 tonnes of coal per hour in optimized installations. At the heart of this productivity lies the longwall shearer, a massive mobile machine that travels back and forth along the coal face, cutting coal with rotating drums while advancing through seam heights ranging from 1.6 to 7 meters. The power cables supplying electricity to these shearers operate in one of the most mechanically demanding cable applications in industrial engineering, subjected to continuous motion within cable chain systems (often referred to as "Bretby chains"), constant vibration from cutting operations, tight bending radii as the shearer traverses the face, and the harsh environmental conditions characteristic of underground coal mining.[1] （长壁开采代表了现代采矿作业可用的最具生产力的地下煤炭开采方法，单个长壁工作面在优化安装中每小时可生产超过5000吨煤炭）
Technical Department
on28/01/2026

Longwall Shearer: What are the advantages of using Type 241 over Type 275 for high-vibration longwall shearer power supplies?

Longwall mining represents the most productive underground coal extraction method available to modern mining operations, with a single longwall face capable of producing over 5,000 tonnes of coal per hour in optimized installations. At the heart of this productivity lies the longwall shearer, a massive mobile machine that travels back and forth along the coal face, cutting coal with rotating drums while advancing through seam heights ranging from 1.6 to 7 meters. The power cables supplying electricity to these shearers operate in one of the most mechanically demanding cable applications in industrial engineering, subjected to continuous motion within cable chain systems (often referred to as “Bretby chains”), constant vibration from cutting operations, tight bending radii as the shearer traverses the face, and the harsh environmental conditions characteristic of underground coal mining.[1] （长壁开采代表了现代采矿作业可用的最具生产力的地下煤炭开采方法，单个长壁工作面在优化安装中每小时可生产超过5000吨煤炭）
5 Min Read
Type 7 Mining Cable to BS 6708
Technical Department
on15/11/2025

What is Type 7 Mining Cable to BS 6708?

Type 7 mining cables represent a critical category of flexible trailing cables designed specifically for the demanding conditions encountered in underground coal mining operations. These cables conform to the rigorous requirements established by British Standard BS 6708, which has become an internationally recognized benchmark for mining cable safety and performance. The standard was developed through decades of mining industry experience and addresses the unique electrical and mechanical challenges present in potentially explosive underground environments. According to BSI Knowledge, BS 6708 specifications establish comprehensive requirements for flexible cables used at mines and quarries, ensuring that these critical power transmission components meet stringent safety and performance criteria. The Type 7 designation specifically identifies non-armoured cables with individually metallic screened cores rated at 640/1100V, engineered for both fixed installation and flexible operation in coal face cutting equipment.