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 two power distribution equipment?: Such as generator, transformer, circuit breaker, isolating switch, bus, power cable and transmission lines, etc..

Q: What are the distribution network equipment: Electricity and other energy sources, its main features are: cannot be stored in large scale, power generation, transmission, distribution and consumption at the same instant

Q: What are the general requirements for working on distribution equipment?: Common type cable connector used in power distribution equipment

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: 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

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: Rural high voltage transmission line equipment ownership: You do not want to what the transformer behind the high-voltage line,

Q: Transmission and transformation equipment: Power transmission and transformation of the protection of the main transformer, relay protection devices, lightning arrester, etc..

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

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