GW7(F)Three Columns, Horizontal Rotary HV AC Disconnector
Product Characteristics
For this series of disconnector, the voltage ranging from 40.5kV to 550kV, GW7 type disconnector, horizontal rotation, three columns, adopts the overturning structure. The fixed crimping shall be applied to the static contact seat and the contact finger. The mechanical or electric linkage method can be applied to the controlled connection among three phases of the equipment as required by users. The CJTK motor mechanism (also manual operation) shall be applied to the disconnector, and the CS31 manual mechanism can be equipped as per the need of the user.
Product Parameters

No.

Name

Unit

GW7-40.5

GW7-72.5

GW7F-126

GW7F-145

GW7F-170

GW7F-252

GW7F-363

GW7F-420

GW7F-550

GW7F-800

GW7F-1100

1

Rated voltage

kV

40.5

72.5

126

145

170

252

363

420

550

800

1100

2

Rated current

A

1250/2000

1250/2000

2000/3150

2000/3150

2000/3150

2000/3150/4000/5000

3150/4000/5000

3150/4000/5000

3150/4000

5000

8000

3

Rated short-time withstand current and duration

DS&

ES

kA/s

40/4@1250A, 2000A, 50/3@3150A, 63/3@4000A, 5000A

63/3

63/3

4

Rated peak withstand current

kA

100, 125, 160

170

170

5

Rated power frequency withstand voltage, 1min

Across the open contact

kV

118

202

303

315

375

606(726)

720/610(922)

720/610(922)

800

960+460

1230+635

To earth

95

160

230

275

325

460(552)

510/520(653)

510/520(653)

620

960

1230

Rated lightning impulse withstand voltage

(1.2/50 s)

Across the open contact

kV

215

439

653

750

860

1256(1500)

1380/1665(1882)

1380/1665(1882)

1550+315

2100+650

2690+900

To earth

185

380

550

650

750

1050(1260)

1175/1425(1504)

1175/1425(1504)

1550

2100

2690

Rated switching impulse withstand voltage

Across the open contact

kV

/

/

/

/

/

/

1145/1350(1466)

1145/1350(1466)

900+450

1300+650

1675+900

To earth

/

/

/

/

/

/

950/1175(1140)

950/1175(1140)

1175

1550

1860

Note: The value shown in the bracket is the Max. offered value of our product.