GW23A Double Columns, Horizontal Expansion HV AC Disconnector
Product Characteristics
For this series of disconnector, the voltage ranging from 72.5kV to 550kV, GW23A disconnector, characterized by double columns, horizontal expansion, comprises three mono poles and each of which is presented as the double column structure, including the dynamic side and the static side. The dynamic side is composed of the base, the supporting insulator, the rotating insulator, the main blade, etc, while the static side is composed of the base, the supporting insulator, the static contact of the main blade, etc. The assembling structures is applied to the vertical transmission rod connecting the mechanism of main &earthing blade with the main body and the horizontal transmission rod among the three pole.
Product Parameters

No.

Name

Unit

GW23A-72.5

GW23A-126

GW23A-145

GW23A-170

GW23A-252

GW23A-363

GW23A-420

GW23A-550

1

Rated voltage

kV

72.5

126

145

170

252

363

420

550

2

Rated current

A

2000/3150

2000/3150/4000

2000/3150/4000

2000/3150

2000/3150/4000/5000

4000/5000

4000/5000

3150/4000/5000

3

Rated short-time withstand current and duration

DS & ES

kA/s

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

4

Rated peak withstand current

kA

100,125,160

5

Rated power frequency withstand voltage, 1min

Across the open contact

kV

202

303(339)

315

375

606(726)

720/610(922)

720/610(922)

1058(1055)

To earth

160

230(260)

275

325

460(552)

510/520(653)

510/520(653)

740

Rated lightning impulse withstand voltage

(1.2/50 s)

Across the open contact

kV

439

653(735)

750

860

1256(1500)

1380/1665(1882)

1380/1665(1882)

1990(2125)

To earth

380

550(622)

650

750

1050(1260)

1175/1425(1504)

1175/1425(1504)

1675

Rated switching impulse withstand voltage

Across the open contact

kV

/

/

/

/

/

1145/1350(1466)

1145/1350(1466)

1625

To earth

/

/

/

/

/

950/1175(1140)

950/1175(1140)

1300


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