Quality requirements of distribution cabinet
1. Main control items (1) The test and adjustment results of the cabinet (panel) must comply with the construction specifications. (2) The metal frame and foundation section steel of cabinet, scre ...
Why should AC contactor be equipped with short circuit ring?
Why should AC contactor be equipped with short circuit ring? Because the attraction coil of AC contactor passes through single-phase alternating current, when the alternating current passes zero, the ...
