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Why is grounding necessary for current transformers?

Grounding current transformers is to ensure equipment and personal safety. The primary winding of the voltage transformer is connected to the high-voltage system. If the insulation is damaged, high voltage may enter the secondary side, endangering equipment and personnel. Grounding can introduce fault current into the ground and limit the secondary voltage increase. Grounding the secondary side of the current transformer is also to prevent high voltage from appearing on the secondary side and to avoid the electrostatic induction voltage generated by capacitive coupling between the primary and secondary sides from endangering equipment and personnel.

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What are the differences between voltage transformers and current transformers in use?

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What are the differences between voltage transformers and current transformers in use?

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