Ners sometimes called neutral grounding resistors are used in an ac distribution networks to limit transient overvoltages that flow through the neutral point of a transformer or generator to a safe value during a fault event. High resistance grounding of an electrical power system is the grounding of the system neutral through a resistance which limits ground fault current to a value equal to or slightly greater than the capacitive charging current of that system. Substation Neutral Earthing Ee Publishers What Is Earthing Transformer Or Grounding Transformer Earthing System Wikipedia If the neutral of the transformer has solid ground a high current will flow through the winding of the transformer and it can damage the transformer. Neutral earthing resistor theory . Zero sequence current transformers and ground fault relays will detect the fault and alarm at ...
