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:High and low voltage distribution equipment
High voltage distribution equipment: high voltage fuse; high voltage isolation switch; high voltage load switch; high voltage circuit breaker.
Q:Distribution system equipment classification
Special equipment used in a certain industry, such as artillery, automatic teller machine, steel making furnace, etc.
Q:Rural high voltage transmission line equipment ownership
High voltage transmission line, one end of the power plant (power), the other end of the number of users in the use of electricity, of course, the current
Q:AC distribution equipment including distribution box
protection of the power supply system is between the power supply and the load are connected, disconnected, conversion
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:What is the power equipment in the distribution room?
which is mainly used for the distribution of the electric energy of the low-voltage users, and the utility model is provided with a medium voltage input line (a small number of outlets)
Q:Difference between distribution voltage and supply voltage
A distribution within the cell, the high voltage side is 10KV, the low voltage side is 220V or 380V.
Q:DC transmission equipment
Power supply operation of power plant and substation in nowadays are used in DC power supply, it provides power for the control of the load and power load and DC emergency lighting load, is the foundation of modern electric power system control and protection
Q:What are the general requirements for working on distribution equipment?
Common type cable connector used in power distribution equipment
Q:Transmission system and distribution system
Simply put, you can distinguish between the end of the cable to the use of electrical equipment (motor, power box) is the distribution system to the substation, transformer is the transmission system

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