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 is the transmission line, what is the power distribution equipment
As the name implies, the transmission is by the power plant or power center regional power grid (sending end), to the load center power grid (by the end) of the transmission of electricity; power distribution is to be distributed by the substation or bus power down.
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:Difference between distribution voltage and supply voltage
In general, the city substation will be reduced to 10KV 110KV to the electrical terminal.
Q:Are electric wires and cables belong to distribution equipment?
Distribution equipment (Electrical Equipment) is in the electric power system of HV switchgear, generator, transformer, power circuit, circuit breaker, low voltage switch cabinet, distribution board, switch box, control box and other equipment collectively.
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:What is the power equipment in the distribution room?
10kV and below voltage rating equipment, divided into high voltage distribution room and low-voltage distribution room
Q:Main equipment of high voltage direct current transmission
The utility model comprises a converter, a converter transformer, a smoothing reactor, an AC filter, a DC lightning arrester and a control protection device.
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:What are the two power distribution equipment?
Such as measuring instrument, relay, switch, button operation and automatic control to provide some of these devices the energy supply device, signal equipment, computer equipment, and control cable (such as batteries, silicon rectifier, etc.).
Q:An introduction to the interpretation of flexible AC transmission systems
The parallel compensation device, such as static var compensator (SVC), thyristor controlled braking resistor (TCBR), static

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