20.2KV generator neutral point grounding resistance cabinet 13.8KV generator resistance cabinet

Li Wei
Contact: Li Wei





R generator neutral point grounding resistance cabinet
, Foreword
.Selection of generator neutral point grounding method
The generator is the driving force of the power system and must be used during operation. It has the ability to adapt to sudden faults, and the grounding method of the generator neutral point is closely related to this.
The grounding methods of the generator neutral point are: ① The neutral point is directly grounded ② The neutral point is grounded through low impedance ③ The neutral point is not grounded ④ The neutral point is grounded through the arc suppression coil ⑤ The neutral point is grounded through high impedance Ground.
Allowable value of single-phase ground fault current of generator stator winding
Rated voltage of generator ()
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Allowable value of fault current
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.The generator is grounded through high impedance
The neutral point of the generator is grounded through high impedance, which can effectively suppress the ground fault current of the generator, thereby effectively preventing power generation. The stator winding of the machine is burned out and the arc grounding transient overvoltage is reduced.
There are many solutions for grounding the neutral point through high resistance, among which the solution combining a single-phase grounding transformer and a resistor is the best. The R-type grounding resistance cabinet produced by our company is small in size and light in weight. The grounding transformer is impact resistant, flame retardant and has low partial discharge. The resistor is made of special materials with stable performance and strong flow capacity.
, Product Overview
.Scope of Use
R-type generator neutral point resistance cabinet is a complete set of devices specially used for high-resistance grounding of the neutral point of power plant generators. The generator voltage level is mainly to. When the stator is grounded at one point, the grounding current can be limited to a very small value and the arc grounding transient overvoltage can be effectively suppressed.


.Use environment
Suitable for indoor use.
Ambient temperature: not lower than ℃, not higher than +℃.
, the altitude does not exceed.
, Relative humidity: not greater than (℃).
, Grid frequency: ~(system), ~(system).
The air in the installation site should not contain chemical corrosive gases and steam, and there should be no explosive dust.
< /C:\C~\~\C~\\\.. />, model description





The company calculates the resistance value and determines the model according to user requirements for free
. Grounding transformer parameters
Insulation level: Class
Temperature rise:
Cooling method:.