We offer the Power + N range of Neutral Grounding Resistor (NGR) Panels up to 66 KV. Ngrs are used to connect the neutral phase and the earth to limit the earth fault current to a safe value thereby protecting the transformer, generator system. The Typical operation conditions are A No Earth Fault: Continuous current (5 % to 10 % of full load current) may pass through the resistor due to system unbalance or Earth Fault Condition where restricted fault current passes through the resistor protecting the system till automatic protection takes place.
Power+N Neutral Grounding Resistor Panels upto 66 KV
Purpose: Neutral Grounding Resistor is connected between the neutral & the earth so that it will limit the earth fault current to a safe value [Normally full load current of the generator, transformer, etc. thereby protecting the transformer, generator system].
Typical operation conditions:
No Earth Fault: Continuous current (5 % to 10 % of full load current) may pass through the resistor due to system unbalance.
Earth Fault Condition: Restricted fault current passes through the resistor protecting the system till automatic protection takes place. The earth pressure (Rated Voltage) is absorbed by the resistor protecting the winding etc.
Salient Design features:
Typical Specifications: