ZW32-24 Series Outdoor High Voltage Vacuum Circuit Breaker
Circuit-breakers form a most vital part of your medium-voltage network. They must make and break all currents within the scope of their ratings, from small inductive and capacitive load currents up to the shortcircuit current, regardless of earth faults,phase opposition, etc.
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Description


General

ZW32-24 series outdoor AC high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is a kind of three-phase AC 50Hz outdoor power distributing equipment with rated voltage of 24kV, mainly used to make and break load current, overload current and short circuit current in power system. It’s suitable for protection and control of transformer substation and industrial and mining enterprise, especially for rural power grid and places in need of frequent operation. The circuit breaker has small volume, light weight, condensation prevention and maintenance-free features, and is adaptive to severe climate condition and dirty environment.

Model Implication


Main Technical Parameters

S/NO

Item

Unit

Parameter

1

Rated voltage

KV

24

2

Rated frequency

Hz

50

3

Rated current

A

630

4

Rated short circuit breaking current

KA

20

5

Rated peak withstand current

KA

50

6

Rated short-time withstand current

KA

20

7

Rated short circuit making current (peak)

KA

50

8

Mechanical life

Time

10000

9

Rated short circuit breaks number

Time

30

10

Power frequency withstand voltage (1min):

11

Phase-to-phase, phase-to-earth

KV

65

12

Isolating distance

KV

79

13

Lightning impulse withstand voltage (peak)

14

Phase-to-phase, phase-to-earth

KV

125

15

Isolating distance

KV

145

16

1min power frequency withstand voltage of secondary circuit

KV

2





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