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		GW7-126	GW7-145	GW7-170
Rated voltage kV		126	145	170
The rated current A		2000, 3150, 4000		2000, 3150, 4000, 5000
Disconnector	Rated peak withstand current kA	125		125,160
	Rated short-time withstand current (RMS)kA	50	50	50,63
	Rated short circuit duration s	3	3	3
Grounding switch	Rated peak withstand current kA	125	125	125,160
	Rated short-time withstand current (RMS)kA	50	50	50,63
	Rated short circuit duration s	3	3	3
Rated short-time power frequency withstand voltage (RMS) kV	to earth	230	275	325
Rated short-time power frequency withstand voltage (RMS) kV	across isolating point	230+70	315	375
Rated lightning impulse withstand voltage (peak) kV	to earth	550	650	750
Rated lightning impulse withstand voltage (peak) kV	across isolating point	550+100	750	860
open and close busbar for current transfer	open and close current A	2500	2500	2500
	transfer voltage V	400	400	400
	open and close times	100	100	100
open and close low current	capacitance current A	1	1	2
open and close low current	inductance current A	0.5	0.5	1
Radio interference level		less than 500 μv
Mechanical life		3000	3000	3000
rated terminal static mechanic load N	longitudinal level	1250	1500	1500
	Horizontal level	750	1000	1000
	Vertical force	100	1250	1250
rated contact area mm	Longitudinal displacement	350	350	350
	horizontal displacement	350	350	350
	Vertical displacement	300	300	300
All applied in an altitude of 2000m

Technical Specifications		GW7-252	GW7-363	GW7-420	GW7-550
Rated voltage kV		252	363	420	550
The rated current A		2000, 3150, 4000, 5000	2000, 3150, 4000, 5000	3150, 4000,5000
Disconnector	Rated peak withstand current kA	125, 160	125, 160	125, 160	125, 160
	Rated short-time withstand current (RMS)kA	50, 63	50, 63	50, 63	50, 63
	Rated short circuit duration s	3	3	3	3
Grounding switch	Rated peak withstand current kA	125, 160	125, 160	125, 160	125, 160
	Rated short-time withstand current (RMS)kA	50, 63	50, 63	50, 63	50, 63
	Rated short circuit duration s	3	3	3	3
Rated short-time power frequency withstand voltage (RMS) kV	to earth	460	510	520	740
Rated short-time power frequency withstand voltage (RMS) kV	across isolating point	460+145	510+210	610	740+315
Rated lightning impulse withstand voltage (peak) kV	to earth	1050	1175	1425	1675
Rated lightning impulse withstand voltage (peak) kV	across isolating point	1050+200	1175+295	1425+240	1675+450
Rated operation impulse withstand voltage(peak) kV	to earth	none	950	1050	1300
Rated operation impulse withstand voltage(peak) kV	across isolating point	none	850+295	900+345	1175+450
open and close busbar for current transfer	open and close current A	2500
	transfer voltage V	427
	open and close times	100
open and close low current	capacitance current A	2
open and close low current	inductance current A	1
Radio interference level		less than 500 μv
Mechanical life		3000
rated terminal static mechanic load N	longitudinal level	2000	2500	4000	4000
	Horizontal level	1500	2000	2000	2000
	Vertical force	1250	1500	2000	2000
rated contact area mm	Longitudinal displacement	500	500	600	600
	horizontal displacement	500	500	600	600
	Vertical displacement	450	450	500	500
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:Transmission lines are not electrical equipment?: Transmission lines are not electrical equipment? The answer is: the device is a function of the assembly

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:Are electric wires and cables belong to distribution equipment?: Wire and cable for the transmission of electric (magnetic) energy, information and realize electromagnetic energy conversion of wire products, wire and cable general also referred to as the cable,

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: Transmission and transformation of basic electrical equipment, including the main wire, transformers, switchgear, high voltage insulators, 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:What are the two power distribution equipment?: Primary equipment is the equipment used in the main system of transmission, transmission and distribution

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: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.

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