How to ground the transformer body?
Answer
For grounding of the transformer main body, the grounding type is determined by the operating voltage of the transformer (the higher of primary and secondary voltage).
(1) Class A grounding is required when the operating voltage is high voltage.
(2) When the operating voltage exceeds 300 V, Class C grounding is required.
(3) When the operating voltage is 300 V or less, Class D grounding is required.
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