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Home    Vacuum Circuit Breaker    VS1 Indoor Vacuum Circuit Breaker

VS1 Indoor Vacuum Circuit Breaker

12/24kv,three-phase AC 50/60Hz
Embedded pole,Adapter KYN-28 series switchgear
630A, 1250A,1600A,2000A,2500A
OEM & ODM,Complete equipment
CCC,ISO9001,CE, CB,IEC60898
WhatsApp:+86 182 0364 1998
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Product Introduction

VS1-Series embedded pole. vacuum circuit breakers are applicable to 12/24kV, three-phase AC 50Hz indoor switchgear and can serve as protection and control units for industrial and mining establishment transformer substation equipment. With modular and independent-frame design for their spring operating mechanisms, VS1-Series circuit breakers can operate with KYN28 mid-set and fixed switchgear. These circuit breakers are subject to both fixed installation and assembly with truck as a handcart unit

 

Normal service condition

Altitude

≤1000m

Ambient temperature

Max

+40℃

Min

-15℃

Ambient humidity:

Maximum average humidity

24 hours ≤95%

1 month ≤90%

Maximum water vapor pressure

24 hours ≤2.2kpa

1 month ≤1.8kpa

Solar radiation is negligible. Vibration from the outside of switchgears and control-gears is negligible. The ambient air has no obvious pollution of dust smoke, corrosive or combustible gases, steams or smog  

 

VS1 Technical Parameters

No.

Item

Unit

Parameter

1

Rated voltage

KV

12/24

2

Rated frequency

Hz

50

3

 

Rated insulation level

1min power frequency withstand voltage(r.m.s)

 

KV

42(phase-to-phase,phase-to-earth)

48(across the isolating distance)

Lighting impulse withstand voltage (peak)

75(phase-to-phase,phase-to-earth)

85(across the isolating distance)

 

 

4

 

 

Rated current

 

 

A

630

630

1250

1600

1250

1250

1600

2000

 

 

2000

2500

 

 

2500

3150

 

 

 

4000

5

Rated short-circuit breaking current

 

KA

20

25

31.5

40

6

Rated short-time withstand current

20

25

31.5

40

7

Rated short-circuit marking current

50

63

80

100

8

Rated peak withstand current

50

63

80

100

9

Rated duration of short-circuit

s

4

10

Rated operating sequence

 

O-0.3s-O/C-180s-O/C

O-180s-O/C-180s-O/C(40KA)

11

Breaking times of rated short-circuit current

Times

30/20 times(40KA)

12

Mechanical endurance

Ops

20000

13

Rated single capacitor bank breaking current

 

A

630

14

Rated back-to-back capacitor bank breaking current

400

15

Double-earth fault breaking current

27.4

16

Allowable maximum contact erosion

 

mm

3

17

Clearance between open contacts

10±1

18

Over stroke

3.5±0.5

19

Non-simultaneity of 3-phase opening and closing

ms

 

≤2

20

Bounce duration of contact closing

≤2

21

Average breaking speed (instant breaking 6mm)

m/s

 

1.1±0.2

22

Average making speed

0.8±0.2

23

Making time

ms

 

≤100

24

Breaking time

≤50

 

 

25

 

Resistance of each phase main circuit

 

μΩ

630A

≤50

1250A

≤45

1600A~2000A

≤35

≥2500A

≤25

26

Contact breaking bounce amplitude

mm

≤2

 

27

Rated operating voltage

Rated operating voltage(V)AC/DC

 

V

24*

110

220

Scope of normal operation voltage

Opening:65%-120% rated voltage, in case the voltage is lower than 30% rated voltage,opening operation is not allowed

28

Rated voltage of energy storage motor

V

AC110/220,DC110/220

29

Energy storage time

s

≤15

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