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FZW32-40.5

Outdoor high voltage AC vacuum isolation load switch

1


FZW32-40.5/1250-25 outdoor high-voltage isolated vacuum load switch (hereinafter referred to as load switch) is a new generation of high-voltage electrical equipment developed by our company and produced by our company. This product has undergone strict type test and long-term trial operation evaluation. , all technical performance indicators all meet GB3804 and IE standards, applicable to the rated voltage 40.5kV, rated current 1250A, three-phase AC 50Hz power supply network.


Product model and meaning

2


Main features

1. Vacuum arc extinguishing, no explosion hazard, no need for maintenance.

2. The isolation knife is interlocked with the three-phase vacuum interrupter, and there is a clear isolation fracture when opening.

3. The parts of the body are all made of stainless steel. The bottom frame is made of stainless steel or hot-dip galvanized with carbon steel material for UV protection coating to ensure the normal operation of the machine in outdoor environment.

4. The installation method is mainly double-bar type and electric operation, and can also be operated by electric or remote control.

5. Large breaking capacity, safe and reliable, long electrical life and frequent operation.

6. It is widely used in the transformation of distribution lines such as rural power grids, urban networks and railways.


Main technical data

Serial number

name Weigh

unit

Parameter value

1

Rated voltage

kV

40.5

2

Rated frequency

Hz

50

3

Rated current

A

1250

4

Rated active load breaking current

A

1250

5

Rated closed-loop breaking current

A

1250

6

5% rated active load breaking current

A

62.5

7

Rated cable charging breaking current

A

25

8

1min power frequency withstand voltage: vacuum fracture, phase, relative / isolation fracture

kV

68/95/110

9

Lightning impulse withstand voltage: phase-to-phase, relative/isolated fracture

kV

185/215

10

Rated short-time withstand current (thermal stability)

kA

25

11

Rated short circuit duration

S

4

12

Rated peak withstand current (dynamic stability)

kA

63

13

Rated short circuit closing current

kA

63

14

Mechanical life

Times

10000

15

Vacuum interrupter contacts allow wear thickness

mm

0.6

16

Manual torque

nm

300

17

Grounding knife mechanical life

Times

2000

18

Grounding knife stability

kA

40


Technical parameters of assembly adjustment of load switch vacuum interrupter are shown in the table.

Serial number

name Weigh

unit

Parameter value

1

Contact opening distance

mm

13±1

2

Average opening speed

m/s

1.4±0.2

3

Three-phase contact is opened in different periods

ms

5

4

Three-phase contact closing

ms

2

5

Charged body and relative distance

mm

>420

6

Auxiliary loop resistance

M 0

400^R^1000


The technical parameters of the isolation knife assembly adjustment are shown in the table.

Serial number

name Weigh

unit

Parameter value

1

Isolation knife positive pressure

N

500 ±50

2

The last separation point of the contact knife to the static contact distance is small fracture/large fracture

mm

5=180/420

3

In and out line resistance

M 0

At 150


Dimensional drawing

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Note: The creepage distance of this load switch is 1506mm, and the dry arc is 600mm away.


Installation diagram

Fzw32-40.5 (electric) load switch installation diagram

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