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VSm-12
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Permanent magnet indoor high voltage vacuum circuit breaker

VSm-12


1.General  Description

VSm-12 series of indoor high voltage vacuum circuit breaker is adopted front and rare construction for their permanent

magnetics and vacuum inlerrupters.The main conducting circuit is with floor-standing type. the upper and lower outlet

terminal and vacuum interrupters are installed in one insulation house.The insulation house is casted with epoxy resin

material by APG technology.which can protect the surface of the vacuum interrupters against dust accumulation and

impact.lt also has good insulation property under humid, hot and pollution ambient condition.

The vacuum circuit breaker with permanent mechanism is air-insulated,used for indoor installation for different kind

of power load,it is suitable for electrical net construction and reconstruction project in municipal net,rural net,mineral

and railway system. especially used in that fields which require frequently switching and have some requirement

for short circuit operation cycles.This product was introduced by some international advance technique and

processing technology with characteristics of intelligence. high reliability.long endurance and free maintenance etc.

2.Applying  conditions:

Ambient temperature;-10----+40

Relative humidity:daily average ≤95%,monthly average ≤90%

Seismic intensity ≤8

Saturated vapor pressuredaily average ≤2.2kPamonthly average≤1.8kPa

Altitude:≤1000m;(Not including special requirement

Service environmentshould be avoided fire, explosion risk, serious pollution, chemical corrosion and violent vibration

3.Technical specification

No.

Item

Unit

Data

1

Rated voltage

kV

12

2

Rated frequency

Hz

50/60

3

Rated insulation levels

Rated power frequency withstand voltage/1min

kV

42

Rated lighting impulse withstand voltage

kV

75

4

Rated current

A

630

1000

1250

1600

2000

2500

3150

5

Rated short circuit breaking current        Rated short time withstand   current(4s)

kA

20

20

20





25

25

25






31.5

31.5

31.5

31.5

31.5

31.5




40

40

40

40

6

Rated short circuit making current(peak)    Rated withstand current(peak)

kA

50

50

50





63

60

63






80

80

80

80

80





100

100

100

100

7

Rated short circuit breaking times

Times

30

8

Rated operating sequence


O-0.3s-CO-180s-CO;O-180s-CO-180s-CO(40kA and above)

9

Mechanical life

Times

60000

10

Control voltage of opening and closing

V

AC/DC220V;AC/DC110V

11

Contact travel

mm

11`1

12

Over-travel of contact

mm

3.5`0.5

13

closing speed

m/s

0.6`0.2

14

opening speed

m/s

1.1`0.2

15

Bounce time of contact closed

ms

≤2

16

Simultaneity of 3 phase contact opened&closed

ms

≤2

17

Closing time

ms

≤75

18

Opening time

ms

≤65

19

Supply voltage of permanent magnetic driver

V

DC220V

20

Max DC component


50%

 

4. Overall drawing














5. Secondary connection diagram








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