● Inserting an Neutral Grounding Resistor between neutral and ground in series.Proper selection of the resistance value of the connected resistor can not only discharge the energy of the second half wave of the single phase grounding arc, so as to reduce the possibility of arc reignition,and suppress the radiation value of grid overvoltage, but also improve the sensitivity of the relay protection device to act on tripping,so as to effectively protect the normal operation of the system.
●Neutral Grounding Resistor systems can be inserted between the neutral and ground in a power system to provide ground fault protection through resistance. The fundamental purpose of a Neutral Grounding Resistor (NGR) is to limit ground fault currents to safe levels so that all the electrical equipment in a power system is protected.
● Neutral Grounding Resistors are also commonly referred to as Neutral Earthing Resistors and Earth Fault Protection Resistors to ensure the safe operation of power system, power supply reliability and user power safety!