Professional Cable Tray Manufacturer

Shandong Hongfeng Electric Group Co., Ltd.

The products can be widely used in construction, energy, power, plant.

Analysis of several matters needing attention in the wiring Cable Tray

Release time:

2024-01-16

when cable tray wiring is used in corrosive or particularly humid places, corresponding protective measures should be taken according to the different corrosion media, and plastic sheathed cable tray elbow supplier should be selected

(1)when cable tray wiring is used indoors, the cable shall not have an outer protective layer of jute or other flammable materials.
(2)when cable tray wiring is used in corrosive or particularly humid places, corresponding protective measures should be taken according to the different corrosion media, and plastic sheathed cable tray elbow supplier should be selected.
(3)when the cable tray is installed horizontally, the height from the ground should not be less than 2.50m, and the part below 1.80m should be protected by metal cover when vertically installed, except when it is laid in the electric special room (such as power distribution room, electrical shaft, technical layer, etc.).
(4)when the cable bridge is installed horizontally, the best span should be selected according to the load curve, and the span is generally 1.5-3m.
When laying vertically, the distance between fixed points should not be more than 2m.
(5)when several groups of cable bridges are installed in parallel at the same height, the maintenance and overhaul distance between the adjacent cable bridges should be considered.
(6)the cable can be laid without spacing on the cable tray, and the filling ratio of the cross section of the cable in the tray: the power cable should not be more than 40%; the control cable should not be more than 50%.
(7)the following cables with different voltages and different uses should not be laid on the same bridge: 1) cables above lkV and below 1kV.
two-way power supply cable that supplies power to the first-stage load in the same path.
cables for emergency lighting and other lighting.
strong and weak power cables.
If it needs to be installed on the same floor bridge under the condition, the partition shall be applied.
when the cable tray is parallel to or crosses with various pipes, the minimum clear distance shall comply with the provisions of Table DQ4-1.
the cable tray should not be installed above the corrosive gas pipe and thermal pipe and below the corrosive liquid pipe, otherwise anti-corrosion and thermal insulation measures should be taken.
the cables in the cable tray shall be fixed in the following parts.
When laying vertically, the upper end of the cable tray elbow supplier and every 1.50 to 2m.
When laying horizontally, the head and tail ends of the cable, turns and every 5m to 10m.
The minimum clear distance table of cable tray and all kinds of pipes DQ4-1 pipe category parallel clear distance m cross clear distance (m) general process pipeline 0.40.3 corrosive liquid (or gas) pipeline 0.50.5 thermal pipe with insulation 0.50.5 non-insulation 1.01.0 (11) the cable in the cable tray should be at the head, tail, turn and every 50m without number, type, start, stop and other marks.
fireproof isolation measures should be taken when cable bridges pass through firewalls and fireproof floors.

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cable tray vendors show cleaning methods of galvanized cable tray

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