Explosion-proof distribution box common faults:
1. The failure caused by product quality In the transformation of rural power grid, due to the large number of distribution boxes required and the short construction period, the distribution box factory needs the supply time of the low-voltage electrical appliances to be urgent and the quantity is large, thus producing the quality of the products. The phenomenon of not strict requirements has caused some products to fail soon after they are put into operation.
2. Faults caused by improper selection of electrical appliances in the explosion-proof distribution box Because the selection of the AC contactor capacity is not very appropriate during manufacturing, the AC contactors of the same capacity are installed for different outlet circuits, and the imbalance of the three-phase load is not considered. However, it is not possible to increase the current level of some of the outlet contactor current levels based on the normal selection model, thus causing the AC contactor to burn out during the summer high temperature season.
Why does the explosion-proof distribution box fail? Wenzhou Luoping Explosion-proof Electric considers the following:
1. Faults 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, which are affected by low temperature. If the temperature is too low, it will affect our use.
2. Failure caused by product quality: If the quality of the explosion-proof distribution box is unqualified, it will malfunction. If some types of AC contactors are not in operation shortly after the switchboard is put into operation, the contactor closing coils will burn out and cannot be operated.
3. Failure 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 outlet circuits, and the imbalance of three-phase load is not considered. In the case, the partial current contactor current level could not be increased based on the normal selection model, and a current level selection was made, which led to the occurrence of AC contactor burnout during summer high temperature season operation.
If you want to know more about the failure of other related distribution boxes, please contact the person in charge of Wenzhou Luoping Explosion-Proof Electric Co., Ltd.
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