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Side-mounted Indoor High Voltage Vacuum Circuit Breaker
  • Side-mounted Indoor High Voltage Vacuum Circuit BreakerSide-mounted Indoor High Voltage Vacuum Circuit Breaker

Side-mounted Indoor High Voltage Vacuum Circuit Breaker

The Side-mounted indoor high voltage vacuum circuit breaker produced by Chinese factory Kexun is mainly used for protection and control circuits. It is suitable for places with rated voltage of 12kV and frequency of 50Hz where frequent operation or circuit current interruption is required. It can be installed in fixed switchgear or used alone.
Model: VS1
Brand:KEXR

●structural characteristics of The Side-mounted indoor high voltage vacuum circuit breaker

▶Lateral Operation Mechanism 

▶Epoxy Resin Insulated Pole 

▶Trip-Free Spring Operating System

▶Front/Rear Cable Terminations

 

● Side-mounted indoor high voltage vacuum circuit breaker using conditions

▶Ambient temperature range: The temperature surround Side-mounted indoor high voltage vacuum circuit breaker should be -15~40℃

▶Altitude: The Side-mounted indoor high voltage vacuum circuit breaker should be installed less than 1000 meters.

▶Relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%, the daily average of saturated vapor pressure is not more than 2.2×10-3MPa, and the monthly average is not more than 1.8×10-3MPa.

▶Earthquake intensity: less than 8 degree 

▶Places without fire, explosion, serious pollution, chemical corrosion and severe vibration.

 

● Technical parameters of The Side-mounted indoor high voltage vacuum circuit breaker

Item

Unit

Data

Rated voltage

KV

12

Rated current

A

630~1250

1250

1250

Rated short circuit break current

KA

20

25

31.5

Rated short circuit closing current

KA

50

63

80

Rated peak withstand current

KA

50

63

80

4S short circuit withstand current (peak)

KA

20

25

31.5

Rated insulate level

Working withstand voltage

KV

42(48)

Impact withstand voltage

75(85)

Rated operating sequence

 

Break-0.3s-close-180s-close

Mechanical life

Time

10000

Rated short-circuit current interruption

Time

50

Rated opening voltage of operating mechanism(DC)

V

110,220

Contact terminal distance

mm

11±1

Overtravel (contact spring compression length)

mm

35±0.5

Three-phase separation and closing bounce time

ms

≤2

Contact closing bounce time

ms

≤2

Average opening speed

m/s

1.1±0.2

Average closing speed

m/s

0.6±0.2

Opening time

Max operating voltage

s

≤0.05

Min operating voltage

≤0.08

Closing  time

s

0.1

Allowable wear accumulation thickness of dynamic and static contacts

mm

3




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