Regarding the grounding of the secondary side of the transformer – seeking advice
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What is the difference between a 380/220V single-phase transformer with its secondary side grounded and one without grounding? Please explain it from the perspectives of safety and practical applications. Thank you
In single-phase transformers, grounding is used to increase the short-circuit current in order to trigger the circuit breaker and disconnect the circuit; this is the principle behind TN and TT systems； A non-grounded transformer is an isolation transformer; since no circuit can be formed, electric shock is not possible. In an IT system, it’s safe to touch the output terminal of the isolation transformer.
What was said upstairs makes perfect sense; to meet the word count requirement, I also agree