Three Major Reasons For The Failure Of The Distribution Box

The reasons why High And Low Voltage Distribution Cabinets fails are considered to be as follows:

1. Failures caused by the influence of ambient temperature on low-voltage electrical appliances: There are low-voltage electrical appliances in the distribution box, which are composed of fuses, AC contactors, residual current action protectors, capacitors and meters, etc. They will be affected by low temperature. If the temperature is too low, it will affect our use;

2. Failures caused by product quality: If the quality of the explosion-proof distribution box is unqualified, failures will occur. For example, some models of AC contactors cannot operate due to burnout of the contactor closing coil shortly after the distribution box is put into operation;

3. Failures caused by improper selection of electrical appliances in the explosion-proof distribution box: Due to improper selection of AC contactor capacity during manufacturing, AC contactors of the same capacity are installed for different outgoing line circuits, and the imbalance of three-phase load is not taken into account, and the current level of some outgoing contactors cannot be increased by one current level on the basis of the normal selection model, which leads to the burning of AC contacts during operation in the high temperature season in summer.