High Voltage Cable Ladder Non Conductive HDG Or Isolated FRP 200mm-700mm Width

High Voltage Cable Ladder Non-Conductive is specified where a route passes close to high voltage equipment and the support system must not introduce a conductive path, a tracking surface or an arc bridge into the installation. The design combines a high voltage rated steel ladder with insulating isolation components, and a full composite version where complete non conductivity is required.

In the standard configuration the ladder is formed from carbon steel or stainless steel rails with 100 mm to 150 mm height, 200 mm to 700 mm usable width and rung pitch of 225 mm or 300 mm, in 2 m and 3 m modules. Insulating standoff brackets and isolating joint plates break the metallic path at the specified clearance from live parts.

For installations that must be non conductive throughout, the same geometry is produced in pultruded FRP with a fire retardant resin system, tested for surface and volume resistivity to ASTM D257 and IEC 60093. That version carries no current at all, so no bonding is required and no tracking path can form across a contaminated surface.

High voltage work also sets the mechanical requirement: cables are heavy, spans are long and vibration from transformers or reactors is continuous, so the section is sized on deflection rather than on ultimate strength, and the supports are designed for the short circuit forces that a fault can impose on a cable group.

BENDIN produces both the steel and the composite version at 7000 m per working day with 180 staff and thirty years of power project experience, exporting 60 to 70 percent of output to utilities and EPC contractors. Resistivity, coating and dimensional records accompany every order, and third party inspection can be arranged.

Minimum order 600 pcs, 25 working day delivery, 10 to 30 USD per piece, pallet packing, terms L/C, D/P or T/T. Tell us the system voltage, the clearance requirement and the cable load and we will confirm whether the steel plus isolation or the full FRP solution is the correct specification.

BENDIN holds ISO 9001 quality certification and issues CE Declarations of Conformity. The standards above state the design and test basis of this product; third party test reports or national approvals are supplied on request and are not implied unless confirmed in the contract.

Dimensions, rung spacing and surface treatment are produced to project drawings. Load and deflection calculations are issued for spans above 3 m.

• High voltage substations and switchyards
• Transformer and reactor cable routes
• Test bays and HV laboratories
• Converter and traction power rooms
• Battery energy storage installations

Q: Which version do I need for a 33 kV substation?
A: It depends on clearance to live parts and the earthing design. Send the voltage class and clearance requirement and we confirm steel plus isolation or full FRP.

Q: How is the insulating path broken?
A: Standoff brackets and isolating joint plates interrupt the metallic run, and in the FRP version no metallic path exists at all.

Q: Is the FRP version fire rated?
A: The resin is fire retardant and tested to ASTM E84, with data supplied for the project fire class.

Q: What is the minimum order?
A: Minimum order 600 pcs, delivery 25 working days, prices from 10 to 30 USD per piece.