CURRENT LOCATION：The home page > News
cabletraySelection
Add time：2015-05-18 Click rate：4423
1 cable tray selection
1.1 in the engineering design, the arrangement of cable tray should be according to the comparison of economic rationality, technical feasibility, operation safety factors, to determine the best solution, but also fully meet the construction installation, maintenance and overhaul and cable laying requirements.
1.2 cable bridge horizontal laying is apart from the ground height of not less than 2.5m, laid vertically from the ground 1.8m following parts should add metal cover protection. The laying of in electrical special room except. Cable tray laying in equipment or on the mezzanine level people Ma and less than 2.5m, should be taken to protect grounding measures.
1.3 cable tray, slot line and a hanger in corrosive environment, the resistance to corrosion of made of a rigid material. Or take anti-corrosion treatment, anti-corrosion treatment should meet the requirements of environmental engineering and durability. The corrosion resistance of high performance requirements or requirements of clean place, should use aluminum alloy cable tray.
1.4 cable tray in fire safety requirements of section, in cable ladder rack, tray add with fire or flame retardant performance of the plate, network and other material to form a closed or semi closed structure and take measures in bridge support and hanger painted on the surface of the fireproof coating. Its overall fire resistance should meet the requirements of relevant national standards or standards. In the fire engineering requirements of the higher places. Should not be used for aluminum alloy cable tray.
1.5 to electromagnetic interference shielding cable line. Or door outside influence on N to such as outdoor sunlight, oil, corrosion of liquid, flammable dust environment requirements. Should be used without hole tray type cable tray.
1.6 in place to the accumulation of dust and cable tray should choose cover; outdoor and public channel cross section of the road. On the bottom tray should add pad or use trays without holes.
1.7 different voltage, different uses of the cable should be laid at the same layer of cable tray:
(1) 1kV above and 1kV and below:
(2) the same path to a power supply of a double circuit cable;
(3) emergency lighting and other lighting cables:
(4) power, control and telecommunication cables.
If the cable laying in different levels in the same cable tray, the middle partition should be increased.
Next：TheComponentsOfCableTray