Frequently Asked Questions for the Installation of Closed Busbars – Vernal

Create Date: 2024-8-30 12:03:23|Source: Woehner/Wiehner

1. The cable in and out of the bridge is not piping

2. The orientation of the bridge grounding and crossing is incorrect, and the special grounding line of the spray or painted bridge device is not equipped with a special disc gasket

3. The fireproof board of the electric well is not fixed, and the fireproof plugging is not perfect

4. The bridge is open at will, and no standard accessories are used

5. The connection between the bridge and the distribution box is not standard

6. The pipe into the bridge frame is not grounded and crossed

7. The line pipe is not in place

8. The bridge is located below the water pipe interface

9. The bridge frame and pipeline wear the fire shutter door

Frequently Asked Questions for the Installation of Closed Busbars – Vernal

Frequently Asked Questions for the Installation of Closed Busbars – Vernal

The following points should be paid attention to in the device:

1. The metal cable tray and its bracket and the metal cable conduit introduced and drawn out must be reliably grounded.

(1) The total length of the metal cable tray and its bracket shall not be less than 2 places connected to the grounding or zero trunk line;

(2) The two ends of the connecting plate between the non-galvanized cable tray shall be made of crossover grounding wires, and the cross-section of the jumper wire shall not be less than 4mm2.

(3) The two ends of the galvanized bridge adapter do not need to cross the grounding wire, but there are no less than 2 connecting fixing bolts with locknuts or locking washers at both ends of the adapter.

2. Emergency distribution lines and normal distribution lines should be laid in separate slots; The two power circuits of dual power supply should not be laid in the same slot.

3. Strong current and weak current should be laid in slots. Different systems in weak current should be laid in slots, and weak current lines such as fire protection and induction wiring should be laid in slots.

4. Compensation methods should be adopted when the trunking, bridge and closing bus pass through the deformation joints of the building; When passing through the firewall and fireproof floor, the trunking and the surface of the bridge should adopt fireproof blocking methods.

5. Bolts should be used between the bridge and the bracket, and the nut should be located on the outside of the bridge.

6. Close the connection of the plug-in bus must comply with the provisions of the product technical documents, when laying vertically, the accessory support should be selected at the floor slab, and the floor height is more than 3.5m and the end of the bus bar should be fixed horizontally when the bracket is suspended.

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