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GW4 Outdoor Isolation Switch

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  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch Featured Image
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
  • GW4 Outdoor Isolation Switch
S9-M Oil-immersed  Transformer

GW4 Outdoor Isolation Switch

GW4 outdoor MV isolation switch is used for three-phase AC 50Hz outdoor high-voltage electrical equipment, switching of lines under  high-voltage  no-load  conditions,  and  electrically  isolating  electrical  equipment  such  as  high-voltage  busbars,  circuit breakers, and live high-voltage equipment for maintenance voltage lines , can also be used to switch small capacitor or inductor current. When the knife is in the normal open circuit position, it can provide insulation distance that meets safety requirements. Widely used in 35-110kV substations.

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Product Details

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product description01

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)

product description02

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)

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