What are the safety measures for low-voltage circuit power failure?

1, the power switch must be in accordance with the oil switch (or load switch, etc. ). The load side circuit breaker and the bus side circuit breaker operate in turn.

2. After the power failure of electrical equipment, before disconnecting the circuit breaker and taking safety measures, it should be considered that electricity cannot touch the equipment and enter the barrier to prevent sudden calls.

3. In case of power failure during construction and maintenance, the personnel on duty should take safety measures according to the requirements of the working ticket, including power failure, electricity inspection, installation of obstacles and hanging signs, and check with the working director on site to confirm that there is no electricity, account for the location and precautions of nearby live equipment, and both parties can start work only after handling the construction permit.

4. In case of power failure, the power supply that may call each circuit must be cut off. You can't just turn on the oil switch to work. You must turn on the knife switch so that each circuit has at least one obvious disconnection point. Transformers and voltage transformers must be disconnected from the high and low voltage sides. The primary and secondary fuses of voltage transformer should be removed. The working power supply of the oil switch should be disconnected. The operating handle of the circuit breaker should be locked.

5, low voltage line power outage maintenance should disconnect the power supply, remove the fuse. Hang the sign "No closing, someone is working" on the operating handle of the circuit breaker.