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Indoor High Voltage Vacuum Breaker

12kV Indoor Vacuum Circuit Breaker

12kV Indoor Vacuum Circuit Breaker

Mostly purpose VS1-12 Type side-mounted vacuum circuit breaker is an indoor high-voltage switching device and is used for protection and control of electric appliance,applied for three-phase power system with rated voltage of 12KV and frequency of 50HZ,as the special advantage of vacuum circuit......

Mostly purpose
VS1-12 Type side-mounted vacuum circuit breaker is an indoor high-voltage switching device and is used for protection and control of electric appliance,applied for three-phase power system with rated voltage of 12KV and frequency of 50HZ,as the special advantage of vacuum circuit breaker,it is especially suitable for place in need of frequent operation under rated current or multiple breaking short-circuit current.
VS1-12 type side-mounted vacuum circuit breaker adopts fixed installation,mainly used for fixed switch cabinet,this circuit breaker can not only be used independently,but also it can be applied for ringpsystem power supply.cabinet substation or various non-standard poser supply system.

Technic Parameter

Item

Unit

Parameter

Rated voltage

KV

12

max.operating voltage

KV

12

Rated current

A

630/1250

630/1250

630/1250

Rated short circuit breaking current

KA

20

25

31.5

Rated short current switching current

KA

50

63

80

Rated peak value withstand current

KA

50

63

80

Rated short time withstand current

KA

20

25

31.5

Rated insulation level

Power frequency withstand voltage(Rated open section front and back)

Kv

42(Fracture 48)

Impulse withstand voltage(Rated open section front and back)

75( Fracture 84)

Rated operating sequence

 

O-0.3s-CO-180s-CO

Mechanical life

Times

20000

Breaking current frequency under rated short circuit

Times

50

Operating mechanism rated switch-on voltage(DC)

V

110,220

Operating mechanism rated off voltage(DC)

V

110,220

Contact opening

mm

11±1

Over-travel(Compressed length of contact spring)

mm

3.5±0.5

Three-phase switching on or off non-synchroneity

ms

≤2

Contact closing bounce time

ms

≤2

Average Switch off speed

m/s

0.9-1.2

Average switching on speed

m/s

0.4-0.8

Switch-off time

Under maximum operation voltage

s

≤0.05

Under minimum operation voltage

≤0.08

Switch-on time

s

0.1

Loop resistance

60

40

Each phase loop DC resistance

mm

3


External & Build Dimension

图1.jpg

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