• Centre Rotating Double Break isolating switch System 1
Centre Rotating Double Break isolating switch

Centre Rotating Double Break isolating switch

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Loading Port:
Qingdao
Payment Terms:
TT OR LC
Min Order Qty:
1 unit
Supply Capability:
400 unit/month

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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

 


Q: What are the general requirements for working on distribution equipment?
When the high voltage line is not cut off, the person in charge of the work shall explain to the whole staff that there is electricity on the line and strengthen the monitoring
Q: AC distribution equipment including distribution box
AC power distribution cabinet is used to distribute electricity, that is from the power transformer has three phase wires of a zero line of a ground load according to the following requirements to the distribution of electric energy
Q: Transmission system and distribution system
Distribution system is the power supply to the distribution load for the purpose of the general voltage level of not more than 10KV
Q: What is the difference between power supply and distribution
The two is the integration of power generation and power supply.
Q: Are electric wires and cables belong to distribution equipment?
Wire rod products for the transmission of electric (magnetic) energy, information and electromagnetic energy conversion.
Q: High and low voltage distribution equipment
Distribution equipment refers to a variety of power plants, substations and factories and enterprises in the low-voltage power distribution system for power, distribution and lighting of the complete sets of equipment.
Q: Transmission lines are not electrical equipment?
Transmission lines are not electrical equipment? The answer is: the device is a function of the assembly
Q: Main equipment of high voltage direct current transmission
Converter also known as converter valve is the key equipment in the converter station, its function is to achieve rectification and inverter
Q: Power distribution equipment should be prepared before the blackout?
Before the power failure, the person in charge or the electrical appliance technician should fill in the work order.
Q: CHINT group in the transmission and distribution equipment to do it?
not only is the previous low, now from energy production to transportation to use to control a complete solution.

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