10.5kV Neutral grounding resistor cabinet for Generator

1.Connecting to the generator neutral points 2.limit the ground fault of the generator 3. develop Intellect controller unit

1.General Introductions:

THT-FZG Neutral Grounding Resistors Enclosure is a complete set of equipment specially used for the power generator’s neutral point adapts the high resistance grounding.

2.  Design principle: The arc grounding over-voltage occurs when the Generator main circuits have a high earth fault current. While the generator usually capable of loading low withstand voltage and easier to damage. The generator coil will sever burns if the earth current is too high. 3.Site condition:

(1)Ambient temperature: -40°C~60°C

(2)Altitude: less than 4000m

(3)Relative humidity: less than 95% (25°C)

(4)Rated frequency: 50/60HZ

4.Specifications:

Generator capacity (MW)	100/125
Rated Voltage (kV)	10.5	13.8
Max. ground fault current(A)	4
Primary Voltage of sign phase grounding transformer (kV)	10.5/√3	13.8/√3
Secondary Voltage of sign phase grounding transformer (kV)	0.22
Grounding transformer capacity (kVA)	30
Resistance on the secondary	1.0

10.5kV Neutral grounding resistor cabinet for Generator