Distribution box use requirements - Solutions - Huaqiang Electronic Network

SMD aluminum electrolytic capacitor

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

1. The distribution box and switch box should have the name, purpose, shunt mark and system wiring diagram.
2. The distribution box and switch box door should be equipped with locks and should be handled by a special person.
3. The distribution box and switch box should be inspected and repaired regularly. Inspection and maintenance personnel must be professional electricians. During inspection and maintenance, it is necessary to wear and wear insulated shoes and gloves as required. Electrical insulation tools must be used, and inspection and maintenance work records should be made.
4. When the distribution box and switch box are regularly repaired and inspected, the corresponding electric isolation switch of the previous stage must be disconnected and powered off, and the “disabled closing, someone working” power failure sign is suspended. .
5. The distribution box and switch box must be operated in the following order:
(1) The power transmission operation sequence is: total distribution box → distribution electric box → switch box;
(2) The power failure operation sequence is: switch box → distribution electric box → total distribution box. Except for emergency situations where electrical failure occurs
6. When the construction site stops working for more than 1 hour, the power switch box should be powered off and locked.
7. The operator of the switch box must comply with the requirements of 3.2.3 of the specification.
8. Do not place any messenger in the distribution box or switch box, and keep it clean and tidy.
9. Do not hang other electrical equipment in the distribution box or switch box.
10. The electrical configuration and wiring in the distribution box and switch box are strictly prohibited. When the melt of the fuse is replaced, it is strictly forbidden to use a melt that does not meet the original specifications. Before the leakage protector is used every day, the leakage test button should be started to test the jump once. If the test jump is not normal, it is strictly forbidden to continue using it.
11. The incoming and outgoing lines of the distribution box and switch box are strictly forbidden to withstand external forces. It is strictly forbidden to contact with sharp metal fractures, strong corrosive media and flammable and explosive materials.
The items and requirements placed in the three-level distribution box of the secondary distribution box of the temporary power supply level distribution box are to further implement the construction site of the city by the Ministry of Construction, “Safety Technical Specifications for Temporary Electricity Use at Construction Sites” (JGJ46-2005). Temporary power distribution box and switch box (ACS) ensure the safety of electricity on the construction site to prevent electric shock and electrical fire accidents. In accordance with the actual conditions of this city, these rules are formulated.