Installation Of Cable Trays Shall Comply With The Following Provisions

Release time:

2025-06-13

Cable tray equipment should comply with the following rules: straight section of steel cable tray length of more than 30m, aluminium alloy or glass fiber reinforced plastic cable tray length of more than 15m with elastic joints; cable tray across the building deformation joints set up to compensate for the equipment cable tray turn at the bending radius, not less than the minimum permissible bending radius of the cable within the bridge.

Lead-free steel armour sheathing rubber insulated power cables have steel armour sheathing rubber insulated power cables, when the planning requirements, the cable tray horizontal equipment bracket ask distance of 1.5 ~ 3m; vertical equipment bracket spacing is not greater than 2m, the bridge and the bracket between the bolts, the bridge connection plate bolts are fixed tightly without loss of nut is located on the outside of the bridge.

Cable tray laid in the flammable and explosive gas pipelines and heat pipes below, when the planning requirements. With the pipe { first broom small sea distance. In line with the rules of the following table, laid in the shaft and through different fire zones of the bridge, according to the planning requirements of the orientation, there is a fire barrier method.

Bracket and embedded parts welded perimeter guarding, weld full; expansion bolts perimeter guarding, the choice of bolts to adapt, joints with tight, anti-loosening parts thoroughly. When the aluminium alloy bridge and steel bracket with the same guard, there is a mutual insulation to prevent galvanic corrosion method.

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