Product Overview

ZW32-12 type outdoor high voltage vacuum pole type circuit breaker (hereinafter referred to as the circuit breaker), is rated voltage 12KV, 50HZ AC three-phase high voltage distribution network control and protection equipment. It is mainly used for load current, overload current and short-circuit current in breaking and closing power lines.

　　Applicable advantages and scope of application

●The main advantages include: small size, light weight, convenient installation, simple operation, high reliability, long life, etc., especially suitable for the requirements of frequent operation places. It is more suitable for installation and use when the rural power grid with weak maintenance capacity is not strong. It can also be used as a segmented switch of the power grid. After installing the controller, the distribution network automation can be realized.

The use of 20kV voltage level power supply has a series of advantages such as increasing power supply capacity, ensuring voltage quality, reducing power loss of the power grid, and saving the construction cost of the power grid.

It is suitable for the construction and transformation of power equipment in urban networks, rural networks, mines and railways. Substations and industrial and mining enterprises in the power distribution system for protection and control purposes.

Main technical parameters of products

Serial Number

Name

Unit

Numerical

1

Rated voltage

kV

12

2

Rated current

A

630

3

Rated frequency

Hz

50

4

Rated thermal stability current

kA

20/25

5

Rated short-circuit breaking current

kA

20/25

6

Rated dynamic stability current (peak value)

kA

50/63

7

Rated short-circuit closing current (peak)

kA

50/63

8

thermal stability time

S

4

9

Rated operating sequence

S

O-0.3s-CO-180s-C

10

Rated insulation level

1min power frequency withstand voltage interphase, ground/fracture

kV

42/48

Rated lightning impulse withstand voltage (peak) Interphase, ground/fracture

75/85

1min power frequency withstand voltage of secondary circuit

2

11

Mechanical life

Times

10000

12

Rated short-circuit breaking current breaking times

30

13

Rated current breaking times

10000