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Grounding Transformer

Product categories of Grounding Transformer, we are specialized manufacturers from China, Grounding Transformer, Neutral Grounding Transformer suppliers/factory, wholesale high-quality products of Neutral Earthing Transformer R & D and manufacturing, we have the perfect after-sales service and technical support. Look forward to your cooperation!

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The Grounding Transformer is a kind of auxiliary transformer that used to offer an earth point for the Delta-Star system. They are typically used for providing a path to ground for unbalanced load current and for fault currents on system where a suitable ground is otherwise not available.


The grounding transformers are generally designed with one of the two configurations: Zig-Zag (Zn) with or without an auxiliary winding or a Wye (Ynd) with a delta connected secondary. The Zig-Zag connection is preferred as it is more cost effective and have smaller size than the Delta-Wye unit. For more safety, neutral earthing resistors (NER) are often used in conjunction with the grounding transformer to limit neutral ground fault current magnitude. The rated voltage of the NER should be equal to the line to ground voltage of the grounding transformer. The current rating and duration should match the grounding transformer


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