VS1-12 Indoor MV Vacuum Circuit Breaker Fixed Type
VS1-12 (ZN63A) type indoor medium voltage vacuum circuit breaker is used as protection and control unit of three-phase AC indoor medium voltage switchgear and industrial and mining enterprise power device of 50Hz and rated voltage up to 7.2~24kV. This products comply with IEC60694, IEC62271-100, and owning KEMA test reports.
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Description

Environmental conditions:

1. Ambient temperature: +40 °C maximum, -15°C minimum

2. Altitude not exceeding 1000m

3. Ambient humidity: daily average not exceeding 95%,

daily average saturated vapor pressure not exceeding 2.2kPa

monthly average not exceeding 90%

monthly average saturated vapor pressure not exceeding 1.8kPa

4. The places for working shall be free from dropping water, fire disaster, explosion risk, severe pollution, chemical corrosion and fierce vibration

5. Earthquake intensity no greater than 8 Richter scale

Techinical Data:

No.

Description

Unit

Data

1

Rated voltage

kV

12

2

Rated insulation levels

Rated power frequency withstand voltage/1min

( phase to phase, phase to earth, open contacts)

kV

42

Rated lighting impulse withstand voltage

(phase to phase, phase to earth, open contacts)

75

3

Rated frequency

Hz

50

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(4s)

kA

20

25

31.5

40

7

Rated short circuit making current

kA

50

63

80

100

8

Rated peak value of withstand current

kA

50

63

80

100

9

Rated operating sequence

O-0.3s-CO-180s-CO

O-180s-CO-180s-CO

10

Rated short circuit breaking current breaking times

times

30/20(40kA)

11

Rated cable charge breaking current

A

25

12

Rated single capacitor bank breaking current

A

630/400(40kA)

13

Rated back to back capacitor bank breaking current

400

14

Allowed abrade cumulative thickness of moving and static contactor

mm

3

15

Clearance between open contacts

mm

11±1

16

Contact stroke

mm

3.5±0.5

17

Bounce duration of contact closing

ms

≤2

18

Non-simultaneity of three phase for opening and closing

ms

≤2



Advantages:

1. Mechanism:The operating mechanism has simple structure and reliable action. Product parts of different specifications have a great versatility. Because the mechanism is independently developed by us, we can make special products subject to different requests from users. Parts of Vacuum Circuit Breaker are strictly chosen with High Quality.

2. Excellent performance

  • Electrical life: in compliance with Class E2 of circuit breaker, 274 operations in various short circuit currents.
  • Mechanical life: 30000 operations in compliance with Class E2 of circuit breaker
  • Capacitive current making/breaking capacity: Class C2, rated single/back to back capacitor bank breaking current 630/4000 A
  • Rated voltages: 6kV; 12kV; 24kV; 40.5kV.
  • Rated current up to 4000A.

3. Certificate: KEMA




Both withdrawable and fixed type are under production.

We accept customized as well.

Any question please Email us.

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