50-1600 KVA Oil Cooled Power Transformer

Before performing the tap - changer switching operation, the 50-1600 KVA oil cooled power transformer must be powered off first, and all safety protection measures should be strictly implemented to ensure the safety of operators and equipment.​

Synchronous Switching Requirements: During the switching operation, it is necessary to ensure that the three - phase switching of the oil immersed current transformer is carried out simultaneously and switched to the same initial gear synchronously to maintain the balanced operation of the three - phase circuit and avoid electrical failures caused by asynchronous switching.​

During the switching process, the tap - changer of the oil immersed type transformer needs to be switched back and forth several times, and then finally switched to the target gear. This is to eliminate the adverse effects of the oxide film that may exist on the contact surface on the contact effect and ensure good electrical connection.​

Resistance Measurement Steps: After the switching operation is completed, the three - phase DC resistance should be measured immediately. The measurement results can effectively determine whether the tap - changer switching is in place and whether the contact is good, so as to promptly detect and solve potential problems.