Products
ZW20-12 outdoor sf6 circuit breaker with control panel 11KV 12KV recloserOutdoor
 Zw20-12 outdoor ac vacuum circuit breaker is outdoor power distribution equipment with rated voltage of 12kV and three-phase ac 50Hz.It is mainly used for breaking and closing load current, overload current and short circuit current in power system.It is suitable for protection and control in substation and power distribution system of industrial and mining enterprises.More suitable for rural power grid and frequent operation of the site.

The circuit breaker consists of three parts: the main box, the operating mechanism box and the hanger for installation, fixing and lifting.The circuit breaker equipped with vacuum arc extinguishing chamber has stable and reliable breaking performance. Epoxy resin and silicone rubber are used for overall pouring, especially the corner sleeve of A and C phases, to ensure good external insulation. It has the characteristics of no burning and explosion risk, safety, small size, light weight and long service life.The circuit breaker adopts fully closed structure, filled with SFB gas in the box, with good sealing performance, moisture-proof and dew-proof performance, suitable for high temperature and humid area.

     

ZW20-12户外交流离压真空断路器为额定电压 12kV、三相交流 50Hz的户外配电设备。主要用于开断、 关合电力系统中的负荷电流、过载电流及短路电流。适用于变电站及工矿企业配电系统中作保护和控制. 更适用于农村电网及频繁操作的场所。
      断路器由内装有高压系统及其操动部件的主体箱、 操作机构箱和供安装、 固定、 搬(吊)运用的吊架三部分组成。装有真空灭弧室的断路器开断性能稳定可靠 , 采用环氧树脂和硅橡胶整体浇注,尤其A、 C两相的拐角套管,保证良好的外绝缘,具有无燃烧和爆炸危险、安全、 体积小、 重量轻和使用寿命长等特点。断路器采用全封闭结构, 箱内充以SFB气体,密封性能好,有防潮、防凝露性能, 适应于高温潮湿地区使用。


ITEM

UNIT

parameters

Rated voltage

Kv

12

Rated insulation level

1min power frequency withstand voltage

Dry test

KV

42/48(isolation fracture

Wet test

KV

75/85

Lightning impact voltage (peak)

KV

75/85(isolation fracture

Rated Frequency

HZ

50

Rated Current

A

630.100

Rated short-circuit breaking current

KA

16

20

25

Rated short-circuit closing current (peak)

KA

40

50

63

Rated peak withstand current

Ka

40

50

63

Rated short time withstand current

ka

16

20

25

Rated short circuit duration

s

4

Rated number of short circuit breaking current

time

30

Full ON-OFF time

Ms

≤100

Arc time

Ms

≤50

Mechanical life

time

10000

Rated operating voltage and rated voltage of auxiliary circuit

V

AC/DC 220

Contact Distance

mm

9±1

Contact overtravel

mm

3±1

Open speed

m/s

1.2±0.2

Closing speed

m/s

0.6±0.2

Contact closing bounce time

ms

≤2

Interphase center distance

ms

135±1.5

Weight

KG

140


联系
width