Neutral Grounding Transformer ... - AMPCONTROL
2021-4-2u2002·u2002neutral grounding transformer ( NGT ) steps down the voltage of neutral bus from 6.6 kv 11 kv 15.75 kv level to 110 volt or 220 volt level. This stepped down voltage is connected to a netral grounding resistance and a ground earth terminal fro bringing the voltage level of neutral bus as close as possible to zero voltage level.
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