GW4 Outdoor Isolation Switch

Selection

Technical data

Item		Unit	Parameters
			GW4- 40.5	GW4- 72.5	GW4- 126	GW4- 126G	GW4- 145
Rated voltage		KV	40.5	72.5	126	126	145
Rated current		A	630 1250 2000 2500	630 1250 2000 2500 4000	630 1250 2000 2500	630 1250	1250 2000 2500
Rated short-time withstand current (RMS)		KA	20 31.5 40(46)	20 31.5 40(46)	20 31.5 40(46）	20 31.5	20 31.5 40(46)
Rated peak withstand current (peak)		KA	50 80 100(104)	50 80 100(104)	50 80 100(104)	50 80	50 80 100(104)
Rated short-time   withstand voltage (effective value)	To the ground	KV	80	140	185(230)	185	375
	Fracture		110	160	210(265)	210	315
Rated lightning impulse withstand voltage (peak)	To the ground	KV	185	325	450(550)	450	650
	Fracture		215	375	520(630)	550	750
Wiring terminal rated the horizontal tension			490(735)	735	735	735	960
Weight of single pole			80	200	240	300	300

Operating conditions

1. Ambient temperature: upper limit +40℃, lower limit -30℃ 2. Altitude: no more than 3000m; 3. Wind speed: no more than 35m/s; 4. Earthquake intensity: do not exceed 8 degree; 5. Pollution level: no more than III class 6. No severe vibration, no corrosive gas, no fire, no explosion danger place.

Overall and mounting dimensions(mm)

1. Wiring terminal 2. Contact 3. Contact finger 4. Support insulator 5. Switch base 6. The main knife operating crank arm 7. The main knife vertical rod (galvanized steel pipe of φ45×45) 8. Anchor ear 9. The main knife operating mechanism (CJ6 or CS17) 10. Grounding contact finger 11. The earth knife vertical rod (galvanized steel pipe of φ45 ×5) 12. The earth knife operating mechanism (CJ78CS17)