Centre Rotating Double Break isolating switch

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Product Description:

Product Classification and Main Technical Specification

 

1), product classification

 

Voltage level: 126kV, 145kV, 170kV, 252kV, 363kV, 420kV, 550kV.

 

Current level: 2000A, 3150A, 4000A, 5000A

 

Auxiliary earthing switch type: None earthing switch, left earthing switch, right earthing switch, double earthing switch.

 

2), Main Technical Specifications

Technical Specifications
GW7-126GW7-145GW7-170
Rated voltage kV
126145170
The rated current A
2000, 3150, 40002000, 3150, 4000, 5000
DisconnectorRated peak withstand current kA125125,160
Rated short-time withstand current (RMS)kA505050,63
Rated short circuit duration s333
Grounding switchRated peak withstand current kA125125125,160
Rated short-time withstand current (RMS)kA505050,63
Rated short circuit duration s333
Rated short-time power frequency withstand voltage (RMS) kVto earth230275325
across isolating point230+70315375
Rated lightning impulse withstand voltage (peak) kVto earth550650750
across isolating point550+100750860
open and close busbar for current transferopen and close current A250025002500
transfer voltage V400400400
open and close times100100100
open and close low currentcapacitance current A112
inductance current A 0.50.51
Radio interference level
less than 500 μv
Mechanical life 
300030003000
rated terminal static mechanic load Nlongitudinal level125015001500
Horizontal level75010001000
Vertical force10012501250
rated contact area mmLongitudinal displacement350350350
horizontal displacement350350350
Vertical displacement300300300
All applied in an altitude of 2000m 

 

Technical Specifications
GW7-252GW7-363GW7-420GW7-550
Rated voltage kV
252363420550
The rated current A
2000, 3150, 4000, 50002000, 3150, 4000, 50003150, 4000,5000
DisconnectorRated peak withstand current kA125, 160125, 160125, 160125, 160
Rated short-time withstand current (RMS)kA50, 6350, 6350, 6350, 63
Rated short circuit duration s3333
Grounding switchRated peak withstand current kA125, 160125, 160125, 160125, 160
Rated short-time withstand current (RMS)kA50, 6350, 6350, 6350, 63
Rated short circuit duration s3333
Rated short-time power frequency withstand voltage (RMS) kVto earth460510520740
across isolating point460+145510+210610740+315
Rated lightning impulse withstand voltage (peak) kVto earth1050117514251675
across isolating point1050+2001175+2951425+2401675+450
Rated operation impulse withstand voltage(peak) kVto earthnone95010501300
across isolating pointnone850+295900+3451175+450
open and close busbar for current transferopen and close current A2500
transfer voltage V427
open and close times100
open and close low currentcapacitance current A2
inductance current A 1
Radio interference level
less than 500 μv
Mechanical life 
3000
rated terminal static mechanic load Nlongitudinal level2000250040004000
Horizontal level1500200020002000
Vertical force1250150020002000
rated contact area mmLongitudinal displacement500500600600
horizontal displacement500500600600
Vertical displacement450450500500
All applied in an altitude of 2000m

 


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Q:What are the distribution network equipment
The transmission function of the power plants issued by the electricity to power consumption areas, or between adjacent grid power to send each other
Q:Distribution system equipment classification
Electronic equipment - named meaning, is mainly composed of electronic components
Q:Rural high voltage transmission line equipment ownership
the transformer can be what, look at the role of electrical appliances can be
Q:What is the role of transmission system and distribution system in power grid
power plant and the load center often separated by long distances, resulting in the problem of power transmission. The power is sent to the user only hydropower area can be fully utilized by high voltage transmission line
Q:AC distribution equipment including distribution box
so there will be in the power distribution cabinet a reference line and a zero line selection of single-phase 6A can switch.
Q:CHINT group in the transmission and distribution equipment to do it?
The national grid is not purchasing some equipment of CHINT, CHINT group is now very powerful
Q:Transmission and transformation equipment
Because of the need to change the current in the process of transmission, so the current transfer is called power transmission.
Q:An introduction to the interpretation of flexible AC transmission systems
synchronous compensator (STATCOM), reactive power distribution is mainly used to improve the system, to adjust voltage and improve the voltage stability of the system;
Q:Power distribution equipment should be prepared before the blackout?
after the high and low voltage power failure, the work must be carried out before the first inspection
Q:DC transmission equipment
DC screen commonly known as intelligent maintenance free DC power supply screen, referred to as DC screen, the general model is GZDW.

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