Summary

ZW32-24 type outdoor vacuum circuit breaker (hereinafter referred to as circuit breaker) for rated voltage 24KV, three-phase AC 50Hz outdoor power distribution equipment, mainly used in the power system, the load current, allergic current and short circuit current.

This circuit breaker has the advantages of small volume, light weight, anti condensation, maintenance etc, can adapt to harsh climatic conditions and pollution environment.

Accord with standard

GB1984  《AC high voltage circuit breaker》

GB11022 《Common technical requirements for high voltage switchgear and control equipment》

GB311.1-6《Insulation coordination for high voltage transmission and distribution          equipment》

GB763   《Heating of AC high voltage apparatus in long term》

GB2706  《Test method for dynamic and thermal stability of AC high voltage       apparatus》

GB3309  《Mechanical test of high voltage switchgear at room temperature》

DL/T593  《Common order technical conditions for high voltage switchgear》

The main technical parameters :

Number Item Unit Data

1 rated voltage kV 24

2 rated frequency Hz 50

3 rated current A 630

4 rated short circuit interrupting current KA 20

5 rated peak withstand current(peak value) KA 50

6 Rated short time withstand current KA 20

7 rated short circuit making current KA 50

8 mechanical endurance 次 10000

9 Break time for rated short circuit interrupting current 次 30

10 power frequency withstand voltage(1min):(west)(dry)phase、ground/fracture KV 65/79

11 Lighting impluse withstand voltage(peak value)phase、ground/fracture KV 125/145

12 Secondary circuit power frequency withstand voltage(1min) KV 2