In the power transmission & distribution system, the grounding of transformers is an important link, which is related to the safe and stable operation of the system. For conventional distribution transformers, grounding is usually required to ensure that the problematic part can be quickly cut off in the event of a fault, protecting the system and personnel safety.
However, isolation transformers are a special case. Isolation transformer is a special type of safety power source, with electrical isolation between its input and output terminals. This means that the secondary winding of the isolation transformer should not be grounded, that is, it should not form a circuit with the ground, thereby avoiding the generation of current circuits and achieving safe isolation.
Although a grounding point may be marked on the isolation transformer, this does not mean that the isolation transformer itself needs to be grounded. In specific electromagnetic systems, it may be necessary to ground other equipment to ensure the safe operation of the system and personal safety.
By understanding the characteristics and working principles of isolation transformers, we can better understand their application and importance in the power transmisison & distribution system.