What is a trip? Why does it cause tripping?

The action of automatically disconnecting the circuit breaker due to an accident is called "tripping".

When an accident occurs, the relay protection devices installed in the traction substation (switching station, sub-district pavilion) are started by the short-circuit current generated by the accident, and the circuit breakers supplying power to the accident point are automatically disconnected, so as to narrow the scope of the accident and ensure the safe operation of other equipment and the normal power supply to non-accident lines. The safe operation of traction power supply system of electric locomotive is ensured.

Extended data

The jumping situation of ordinary houses

1. The electrical appliances at home are overloaded, exceeding the rated load. This trip belongs to overload protection trip. Just reduce the electrical equipment.

2. Some electrical appliances at home are grounded and tripped due to leakage protection. Electrical appliances can be plugged in or turned on gradually. When an electrical appliance trips when it is powered on, first check whether this one is suspected of leakage, or whether the load of high-power electrical appliances has accumulated more than the rated load.

3. Check whether the equipment leaks electricity. All other electrical appliances can be turned off, and this device can be turned on separately. If it is turned on normally, it means that this device does not leak electricity. If it trips, it means that the problem lies in this equipment.

4. If it is found that the equipment is not leaking, it is a load problem. You can first look at the size of your open circuit, but also pay attention to the allowable load of the meter, and then convert the total power of the electrical appliances you are using. If there is really no way to adjust and avoid overload, you should consider the problem of capacity expansion and open circuit replacement of electric meters.

5. If the above problems do not exist, replace it with a new air switch with the same capacity to see if it is caused by air switch failure or allergy.

Baidu encyclopedia-travel