Why NGR Neutral Grounding Resistor are used. The Short form of NGR is Neutral Grounding Resistor. NGRs are used in an electrical power system to protect the star connected alternator/generator or the transformer. NGR is constructed by inserting a resistor between the star connected neutral terminal and ground terminal. NGRs grounding system provides more benefits […]
A grounding transformer or earthing transformer is one kind of auxiliary transformer that used in three-phase electric power transmission systems to provide a ground or earth path. In short we can say Earthing or Grounding Transformers are part of an earthing system of the electrical transmission network.