145KV, 40KA, 2000A three pole single throw Line disconnect switch

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Product Description:

Specifications

1. Outdoor 145kV AC Bus and Line Disconnectors(ISOLATOR) 
2. KEMA test report 
3. ISO quality certificate 
4. Good quality

General introduction :

GW4-40.5/72.5/126/145/170/252 Ⅲ Series, two columns, horizontally rotating type, HV, AC, disconnector

 Product classifications and Main Technical Specifications :

1), Product classification 

Voltage level: 40.5kV, 72.5kV, 126kV, 145kV, 170kV, 252kV. 

Current level: 630A,1250A, 2000A, 2500A,3150A, 4000A. 

Auxiliary earthing switch type: none earthing switch, left earthing switch, right earthing switch, double earthing switches. 

2), Main Technical Specifications

 

Technical Specifications

Product Type

GW4-40.5Ⅲ

GW4-72.5Ⅲ

GW4-126Ⅲ

Rated voltage kV


40.5

72.5

126

The rated current A


1250, 2000, 3150, 4000

Disconnector

Rated peak withstand current kA

100, 125

Rated short-time withstand current (RMS)kA

40, 50

Rated short circuit duration s

4, 3

Grounding switch

Rated peak withstand current kA

100, 125

Rated short-time withstand current (RMS)kA

40, 50

Rated short circuit duration s

4, 3

Rated short-time power frequency withstand voltage (RMS) kV

to earth

95

160

230

across open contacts

118

200

230+70

Rated lightning impulse withstand voltage (peak) kV

to earth

185

350

550

across open contacts

215

410

550+100

minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector


53

94

164

rated terminal static mechanic load N

longitudinal level

1000

1000

1000, 1250

Horizontal level

750

750

750

Vertical force

1000

1000

1000

switching micro-capacitance current A


2

2

2

switching micro-inductance current A


1

1

1

switching busbar for current transfer A (busbar transfer voltage 100V)


400V, 2500A, 100 times

Radio interference level


less than 500 μV

Mechanical life


3000

3000

3000

single pole weight (kg)


120

200

260

Note: All applied to an altitude of 2000m

 

 

Technical Specifications


GW4-145Ⅲ

GW4-170Ⅲ

GW4-252Ⅲ

Rated voltage kV


145

170

252

The rated current A


1250, 2000, 3150, 4000

Disconnector

Rated peak withstand current kA

100, 125

Rated short-time withstand current (RMS)kA

40, 50

Rated short circuit duration s

4, 3

Grounding switch

Rated peak withstand current kA

100, 125

Rated short-time withstand current (RMS)kA

40, 50

Rated short circuit duration s

4, 3

Rated short-time power frequency withstand voltage (RMS) kV

to earth

275

325

460

across open contacts

315

375

460+145

Rated lightning impulse withstand voltage (peak) kV

to earth

650

750

1050

across open contacts

750

860

1050+200

minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector


188

221

291

rated terminal static mechanic load N

longitudinal level

1000, 1250

1500

1500

Horizontal level

750

1000

1000

Vertical force

1250

1250

1250

switching micro-capacitance current A


2

2

2

switching micro-inductance current A


1

1

1

switching busbar for current transfer A (busbar transfer voltage 100V)


400V, 2500A, 100 times

Radio interference level


less than 500 μV

Mechanical life (times)


3000

3000

3000

single pole weight (kg)


300

326

900

Note: All applied to an altitude of 2000m

 


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after the high and low voltage power failure, the work must be carried out before the first inspection
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