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ZW32-12kV Pole-Mounted Vacuum Circuit Breaker

The ZW32-12 outdoor high-voltage vacuum pole-mounted circuit breaker (hereinafter referred to as the “circuit breaker”) is a control and protection device for 12 kV, 50 Hz three-phase AC high-voltage distribution networks. It is primarily used to interrupt and make connections of load currents, overload currents, and short-circuit currents in power lines.

Keywords: High- and low-voltage complete sets – packaged substations – ring main units

Category:

Circuit breaker

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Product Description

　　Product Overview

　　The ZW32-12 outdoor high-voltage vacuum pole-mounted circuit breaker (hereinafter referred to as the “circuit breaker”) is a control and protection device for 12 kV, 50 Hz three-phase AC high-voltage distribution networks. It is primarily used to disconnect and make contact with load currents, overload currents, and short-circuit currents in power lines.

　　 Applicable Advantages and Scope of Application

　　● The main advantages include compact size, light weight, easy installation, simple operation, high reliability, and long service life, making them particularly well suited to applications involving frequent switching. They are especially ideal for installation and use in rural power grids where maintenance and repair capabilities are limited. They can also serve as sectionalizing switches in the distribution network, and when equipped with a controller, they can enable distribution automation.

　　● Supplying power at the 20 kV voltage level offers a range of advantages, including increased power supply capacity, guaranteed voltage quality, reduced power losses in the grid, and lower grid construction costs.

　　● Suitable for the construction and renovation of power equipment in urban distribution networks, rural distribution networks, mines, railways, and other applications. Used for protection and control in substation and industrial/mining enterprise distribution systems.

　　Main Technical Parameters of the Product

Serial Number

Name

Unit

Numerical value

1

Rated voltage

kilovolt

12

2

Rated current

A

630

3

Rated frequency

Hertz

50

4

Rated thermal stability current

kA

20/25

5

Rated short-circuit breaking current

kA

20/25

6

Rated dynamic stability current (peak)

kA

50/63

7

Rated Short-Circuit Making 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

1-minute power-frequency withstand voltage between phases and to ground/open circuit

kilovolt

42/48

Rated lightning impulse withstand voltage (peak), phase-to-phase, phase-to-ground, and across gaps

75/85

1-minute power-frequency withstand voltage of the secondary circuit

2

11

Mechanical life

next

10000

12

Rated short-circuit breaking current breaking operations

30

13

Rated Current Interrupting Capacity

10000
设计原理 动态屈光+单点多焦
镜片材质 PC太空镜片
瞳距标尺 54mm-68mm
镜片屈光度 +2.00D~-5.00D
眼镜尺寸 160*13.3*7.3mm
眼镜重量 45g
镜盒重量 239g
镜盒电池规格 2600ma
眼镜电池规格 180ma
传动系统寿命 50万次