GW4 Double Columns, Horizontal Rotation HV AC Disconnector
Product Characteristics
For this series of disconnector, the voltage ranging from 40.5kV to 420kV, GW4 type disconnector, double columns, horizontal rotating central single-break, which is composed of the base, the supporting insulator and the conductive part, and the earthing switches can be equipped on one side or two sides. Moreover, the main blade and the earthing blade can be applied to three-phase gang operation and independent pole operation by adopting the motor mechanism or manual mechanism.
Product Parameters

No.

Name

Unit

GW4-40.5

GW4-72.5

GW4-126

GW4-145

GW4-170

GW4-252

GW4-363

GW4-420

1

Rated voltage

kV

40.5

72.5

126

145

170

252

363/420

363/420

2

Rated current

A

1250/2000/2500/3150/

4000/5000/6300

1250/2000/2500/3150/4000

2000/3150/

4000

3150/4000

3150/4000

3

Rated short-time withstand current and duration

DS & ES

kA/s

40/4@1250A,2000A,50/3@2500A,3150A,63/3@4000A,5000A,6300A

4

Rated peak withstand current

kA

100,125,160

5

Rated power frequency withstand voltage, 1min

Across the open contact

kV

118(134)

202(226)

303(339)

315

375

606(726)

720/610(922)

720/610(922)

To earth

95(108)

160(181)

230(260)

275

325

460(552)

510/520(653)

510/520(653)

Rated lightning impulse withstand voltage

(1.2/50 s)

Across the open contact

kV

215(243)

439(464)

653(735)

750

860

1256(1500)

1380/1665(1882)

1380/1665(1882)

To earth

185(210)

380(396)

550(622)

650

750

1050(1260)

1175/1425(1504)

1175/1425(1504)

Rated switching impulse withstand voltage

Across the open contact

kV

/

/

/

/

/

/

1145/1350(1466)

1145/1350(1466)

To earth

/

/

/

/

/

/

950/1175(1140)

950/1175(1140)

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