neutral point earthing device for generator

Mainly grade for the generator voltage is from 6 kv to 20 kv. When the stator one-point earthing occurs, It can limit the grounding current in a small value and effectively suppress arc grounding transient overvoltage.

1)It is suitable for equipment with high-resistance grounding



2)installation :general indoor



3)resistor material:electrothemal alloy grid element type is better than stainless steel



4)Generator neutral grounding resistor ark also equip single-phase disconnector so that it can isolate power supply during the test and repairs



5)It can be equipped with electric current and recorder,When normal monitoring neutral unbalance current,When a single-phase earth fault occur, it can record active number;And can provide analog output for protection and monitoring system



6)Our company has researched intelligent control unit which can monitor more data than counter and transfer the data to the mainly control room

limit the earth fault

HGR

Protection and measurement

protect generator stator

neutral point of generator which voltage is from 6kv to 20kv

Working principle



In the operation of the generator , single-phase grounding is the most common fault. The point of failure in arc grounding will further expand the stator winding insulation damage even core burn sintering. If not timely to find and fast to remove faults, and will become or interturn short circuit..Based on the above reasons, it has widespread adopted internationally generator neutral high resistance grounding in order to limit the earth current and avoid the harm of various overvoltage.