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    ZW32-12FG Outdoor High Voltage Vacuum Circuit Breaker / Intelligent Type

    ZW32-12FG series outdoor high voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is a rated voltage of 12kV, three-phase AC 50Hz outdoor power distribution switchgear. The circuit breaker is mainly used to break and close the load current, overload current and short-circuit current in the power line. It has overload and short-circuit protection functions, meets the control and measurement requirements, and can also realize remote control and monitoring functions. It is widely used in substations, industrial and mining enterprises' power distribution systems for control and operation, and is particularly suitable for places that require frequent operations.
  • Category:
    Outdoor High Voltage Vacuum Circuit Breaker
  • Browse number:
    32
  • Release time:
    2024-09-21 11:22:42
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Overview

ZW32-12FG series outdoor high-voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is an outdoor power distribution switchgear with a rated voltage of 12kV and three-phase AC 50Hz. The circuit breaker is mainly used to open and close the load current, overload current and short-circuit current in the power line. It has overload and short-circuit protection functions, meets the control and measurement requirements, and can also realize remote control and monitoring functions. It is widely used in substations and industrial and mining enterprises for control and operation in power distribution systems, especially suitable for places that require frequent operation.


The circuit breaker complies with technical standards such as GB1984-2003, DL/T 402-2007 and IEC60056.


Model meaning


Normal use conditions

◆ The surrounding air may be polluted by dust, smoke, corrosive gas, steam or salt mist, and the pollution level is level III;

◆ The wind speed does not exceed 34m/s (equivalent to 700Pa on the surface of the cylinder);

◆ Use conditions: The circuit breaker can be used under normal use conditions different from those specified above. Please consult with us for requirements.


Technical Parameters

NO.

Items

Unit

Data

01

Rated voltage

kV

12

02

Rated current

A

630

1250

03

Rated frequency

Hz

50

04

rated insulation level

one minute power frequency withstand voltage

Dry test

kA

42/48

Wet test

34

Secondary circuit to ground

2

Lightning impulse withstand voltage

75/85

05

Rated short circuit breaking current

kA

50

63

06

Rated short circuit making current

kA

20

25

07

Rated peak withstand current

kA

50

63

08

Rated Short-circuit Breaking Current Breaking Times

Times

30

09

Rated Duration of Short-circuit

s

4

10

Rated operating voltage and rated voltage of auxiliary circuit

V

DC220、AC220、AC/DC220

11

Rated operating sequence


OC-0.3s-CO-180s-CO

12

Rated current for overcurrent tripping

A

5

13

Mechanical life

Times

10000

14

Allowable Cumulative Wear Thickness of Dynamic and Static Contacts

mm

3

15

Current ratio of Current Transformer

200/5 400/5 600/5

16

Contact stroke

mm

9±1

17

Exceed range(the compress length of contact sping)

mm

2±5

18

Average break speed

m/s

1.2±0.3

19

Average closing speed

m/s

0.6±0.2

20

Opening time

ms

20~40

21

Closing time

ms

30~60

22

The jump time of contact close break

ms

≤2

23

Different period of three-phase break and close break


≤2

24

Resistance of each phase main loop

μΩ

≤80(isolation belt≤150)


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