145kv Wall Mounted Disconnector

• Type: High-voltage
• Structure: Three-column Disconnector
• Installation: Wall Mounted
• Operation: Electric
• Grounding Mode: Grounding
• Certification: ISO
• Model NO.: GW7
• Transport Package: Wooden
• Specification: 145KV
• Trademark: HEMG
• Origin: China
• Production Capacity: 10000

Product Description

GW7 145kv double breaker Disconnector

 

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
	across isolating point	230+70	315	375
Rated lightning impulse withstand voltage (peak) kV	to earth	550	650	750
	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
	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
	across isolating point	460+145	510+210	610	740+315
Rated lightning impulse withstand voltage (peak) kV	to earth	1050	1175	1425	1675
	across isolating point	1050+200	1175+295	1425+240	1675+450
Rated operation impulse withstand voltage(peak) kV	to earth	none	950	1050	1300
	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
	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