GW6A Single Column, Double Arms, Vertical Expansion HV AC Disconnector
Product Characteristics
For this series of disconnector, the voltage ranging from 72.5kV to 550kV, GW6A type disconnector, single column, double arms and vertical expansion, is of small distance, small transverse space at the opening position and applicable for the busbar disconnector. Moreover, the dynamic contact is characterized by wide scope and strong ability in breaking ice.
Product Parameters

No.

Name

Unit

GW6A-72.5

GW6A-126

GW6A-252

GW6A-363

GW6A-420

GW6A-550

1

Rated voltage

kV

72.5

126

252

363

420

550

2

Rated current

A

2000/3150

2000/3150/4000

2000/3150/4000/5000

3150/4000/5000

3150/4000/5000

3150/4000/5000

3

Rated short-time withstand current and duration

DS & ES

kA/s

40/4@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)

606(727)

720/610

720/610

1058

To earth

160

230(260)

460(553)

510/520

510/520

740

Rated lightning impulse withstand voltage

(1.2/50 s)

Across the open contact

kV

439

653(735)

1256(1503)

1380/1665

1380/1665

1990

To earth

380

550(622)

1050(1262)

1175/1425

1175/1425

1675

Rated switching impulse withstand voltage

Across the open contact

kV

/

/

/

1145/1350

1145/1350

1625

To earth

/

/

/

950/1175

950/1175

1300


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