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EXVS-12kV-630A Breaker

10kV MV Indoor Vacuum Circuit Breaker/Permanent Magnet Mechanism Type EXVS-12kV-630A

EXVS-12kV-630A
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1. General description
   EXVS-12kV/630A type permanent magnet operating mechanism vacuum circuit breaker is a circuit breaker with quick split function developed by our company.
   
The vacuum circuit breaker of permanent magnet mechanism is installed indoors and air insulated. It is used to switch open and close various power loads of different properties. It is suitable for urban power grid, rural power grid and other power grid construction and transformation projects, especially for frequent operation within the working current range and occasions with certain requirements for short-circuit breaking performance. The product absorbs advanced technologies and processes at home and abroad. It has the characteristics of intelligence, high reliability, long service life and maintenance free. When used, it has no pollution to the surrounding environment. It is a green environmental protection product.

The Technical Specifications of this Permanent Magnet VCB define its electrical and mechanical parameters for indoor medium-voltage distribution applications. The VVS-12kV-630A Breaker is a permanent magnet operating mechanism vacuum circuit breaker with quick split function, designed for indoor installation with air insulation. This 12kV Indoor Vacuum Circuit Breaker is used to switch open and close various power loads of different properties, making it suitable for urban power grid, rural power grid, and other power grid construction and transformation projects. The vacuum circuit breaker is especially suitable for frequent operation within the working current range and occasions with certain requirements for short-circuit breaking performance. This Permanent Magnet VCB absorbs advanced technologies and processes from domestic and international sources, featuring intelligence, high reliability, long service life, and maintenance-free operation. The VVS-12kV-630A Breaker provides no pollution to the surrounding environment, making it a green environmental protection product. This 12kV Indoor Vacuum Circuit Breaker has a rated voltage of 12kV, rated frequency of 50Hz, rated insulation level of 42/48kV, and rated current of 630A (with options for 1000A and 1250A). Each vacuum circuit breaker undergoes comprehensive testing to ensure reliable performance in demanding distribution networks.
2. Technical parameters
Table 1 Technical parameters

Item

Unit

Data

Rated voltage

kV

12

Rated frequency

Hz

50

Rated insulation level

1min power frequency withstand voltage

kV

42/48

Lightning impulse withstand voltage

75/85

Rated current

A

630(1000;1250)

Partial discharge value (14.4kV/1min)

pC

≤5

Rated short-time withstand current

kA

20(25;31.5)

Rated peak withstand current

kA

50(63:80)

Rated short-circuit current duration

S

4

Rated short-circuit current breaking times

times

30

Rated thermal stability time

S

4

Mechanical life

times

10000

Rated energy storage voltage

V

AC/DC: 24V;48V;110V;220V

Rated closing and opening operating voltage

V

AC/DC:24V;48V;110V;220V

Table 2 Mechanical parameters

Item

Unit

Data

Clearance between open contacts

8.5±0.3

Contact overtravel

mm

2.5±0.5

O/C asynchronous

ms

≤2

Contact closing bounce time

ms

≤2

Phase distance

mm

(150;180;200;230;250;275;300)±1.0

Closing speed

m/s

0.8±0.2

Opening speed

m/s

1.6±0.2

Closing time

ms

≤50

Opening time

ms

≤15 (Inherent time less than 5)

Controller energy storage time

s

<5A

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