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Vacuum Circuit Breaker
Home / Products / Vacuum Circuit Breaker / Column Vacuum Circuit Breaker

Vacuum Circuit Breaker

Column Vacuum Circuit Breaker

ZW32-12 series outdoor column vacuum circuit breaker (hereinafter referred to as circuit breaker) is distribution equipment of three-phase alternative current 50Hz which voltage rated at 12kV,it's mainly used for breaking and making load current, overload current, and short-circuit current in power system.It's suitable for use as protection and control in urban and rural power network, more suitable for places where are frequently operated.
Overview

Product Feature

◆Circuit breaker is designed with small volume,fully-closed structure,unique packaging technique of arc chamber and good sealing performance, which is suitable for use in high temperature and wet area.

◆The breaking performance of circuit breaker is steady,which has feature of inflammation, non-explosive danger, safe, maintenance-free light weight, long service life (10000 time), etc.

It’s set with two-phase CT which outputs two-phase current, for information analysis by intelligent controller.To fulfill its function of over-current protection.CT ratio from 50/5 to 600/5, user can choose as per actual requirement.

◆It’s set with closing surge elimination device (compound controller), not only avoids malfunction caused by surge.

◆It can set with intelligent switch controller also, which has many protecting function like three-stage current protection,Zero-sequence protection,r eclosing,interrupting protection, etc.

◆It supports many kinds of protocols, which can be chosen to generate communication network,not only can it do manual operation locally and remote control to switch, but it also fulfills remotecontrol by communication network.lf it’s equipped with relative recloser or breaker controlling device, which can be used as recloser or breaker.

◆The operation mechanism is set inside of switch box,it avoids rust of mechanism effectively under long-time outdoor condition.

◆Column-mounted installation.

Main Technical Specifications

Rated voltage kV 12
1 min rated power-frequency withstand voltage kV Phase to phase:42
Phase to ground:42
Fracture:48
Rated lightning impulse withstand voltage (peak value) kV Phase to phase:75
Phase to ground:75
Fracture:85
Rated current A 630
Rated frequency Hz 50
Rated short-circuit breaking current KA 12.5 16 20
Rated short-circuit making current(peak value) kA 31.5 40 50
Rated peak withstand current kA 31.5 40 50
4s rated short-circuit withstand current KA 12.5 16 20
Rated operation sequence   open-0.3s-close open-180s-close open
Closing time ms 25~60
Opening time ms 20~55
Rated short-circult breaking current breaking times times 30
Mechanical life times 10000
Second-time circuit 1 min power-frequency withstand voltage V 2000
Rated power of energy storoge motor W 40
Rated voltage of energy storage motor V DC220, 110
Rated closing operation voltage V DC220, 110 AC220
Rated opening operation voltage V DC220, 110 AC220
Motor energy storage time s ≤8

Main Mechanical Characteristics

Contact travel mm 9±1
Contact ultra travel mm 2±0.5
Central distance of interphase mm 340±1.5
Contact bouncing time on closing ms ≤ 2
Three-phase non-synchronous opening and closing ms ≤2
Average opening speed m/s 1.2±0.2
Average closing speed m/s 0.6±0.2
Conductive circuit resistance on each phase μΩ ≤ 80

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