VS1-24(ZN63A) Side-mounted Indoor Vacuum Circuit Breaker
The vacuum circuit-breakers of type VS1-24 side-mounted type are intended for indoor installation and for operation at frequencies of 50Hz on system having voltage of 24kV.
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Description

VS1-24(ZN63A) Side-mounted Indoor Vacuum Circuit Breaker

Overview

The vacuum circuit-breakers of typeVS1-24side-mounted type are intended for indoor installation and for operation at frequencies of 50Hz on system having voltage of 24kV.


Vacuum circuit-breakers have particular ad-switching frequency in the working current range and/or where a certain number of short-circuit breaking operations are expected.VS1-24 for fixed installation vacuum circuit-breakers have exceptionally high operating reliability and long life.


This productcomplieswithGB1984andIEC62271-100,“High Voltage Alternating-currentCircuit Breakers”and other international standards.


Technical Data

Sr.NO

Description

Unit

Data

1

Rated voltage

kV

24

2

Rated frequency

Hz

50

3

Rated current

A

630

630

1600

1250

1250

2000

4

Power frequency withstand voltage 1min.

kV

65

5

Lightning impulse withstand voltage

kV

125

6

Rated short time withstand current

kA

20

25

31.5

7

Rated short circuit duration

s

4

8

Rated peak withstand current

kA

50

63

80

9

Rated short circuit breaking current

kA

20

25

31.5

10

Rated short circuit making current

kA

50

63

80

11

Rated short circuit breaking times

times

30

12

Double-earth fault breaking current

kA

17.4

21.75

27.4

13

Rated operating sequence

O-0.3s-CO-180s-COO

14

Rated Cable-charging breaking current

A

25

15

Rated single capacitor bank breaking current

A

630

16

Rated back-to-back capacitor bank breaking current

A

400

17

Mechanical operation

times

10000

18

Total allowable wearing thickness between moving and fixed and contact

mm

3





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