1.Stainless steel grid resistor banks standard
2.Optional Edge wound resistor banks
3.Mill Galvanized Type enclosure
LY-NGRB Type Transformer Neutral Grounding Enclosure
Features
1.Stainless steel grid resistor banks standard
2.Optional Edge wound resistor banks
3.Mill Galvanized Type enclosure
4.Extra heavy duty mounting channels for transformer
5.Terminal block for easy addition of protective relaying equipment
LY-NGRB type transformer neutral grounding resistance used for the transformer’s neutral of 6-35kV ac power to realize grounding by resistance.
Standard ventilated enclosures are painted or mill-galvanized, with stainless steel, hot-dipped galvanized, and aluminum as options. Neutral grounding transformers in resistance grounding resistor systems protect power transformers from damaging fault currents. Resistance grounding of the neutral limits the ground fault current to a high level in order to operate the protective fault clearing relays and current transformers. These devices are then able to quickly clear the fault, usually within a few seconds. The limited fault current and fast response time also prevent over-heating and mechanical stress on conductors. Low resistance grounding resistors are commonly found on medium voltage systems. Ground fault protection for high voltage transformer grounding applications typically requires a grounding transformer to lower the voltage reflected to the neutral grounding resistor. Our product resistors are designed according to customer specification.
