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ZN63A(VS1)-12 Series of Indoor High Voltage Vacuum Circuit Breaker

General Description:

ZN63A(VS1)-12 Model indoor high voltage vacuum circuit breaker applies to power system of rated voltage 12kv as a protective and control unit for power grid equipment and industrial power equipment It can equip with KYN28(GZS1), XGN, GG-1A and other types of switchgear panels. Related products: isolated handcart, fuse handcart and voltage transformer handcart

Structural Features:

1.This series of VCB is used Integrated design for operating mechanism and VCB body with reasonable, beautiful and compact arrangement.2.This series of VCB adapted vertical insulation house against Impact due to different weather, it can effectively prevent VIS against damage by exterior factors.3.The two different installation unit of Fixed type and withdrawable type can meet the different requirements for different switchgear.

Applying Ambient Conditions:

Ambient temperature:-10℃-+40℃Relative humidity:The average humidity of a day should be no more than 95%. The average humidity of a month should be no more than 90%.Earthquake intensity: not exceed 8 degrees.Saturated vapor pressure the average pressure of a day should be no more than 2.2kPa; the average pressure of a month should be no moreThan1.8Kpa;The height above sea level:≤1000 m (Except special requirements)It should be installed in the places without fire, explosion, serious filth, and chemical erosion and violent vibration.

ZN63A(VS1)-12 Series of Indoor High Voltage Vacuum Circuit Breaker

NO.

Item

Unit

Data

1

Rated voltage

KV

12

2

Rated frequency

Hz

50

3

Rated lightning impulse withstand voltage (peak)

KV

75

4

Rated short-lime power frequency voltage (1 min)

KV

42

5

Rated current

A

630、1250

630、1250

1250 、1600、

2000、2500

1600、2000

 2500、3150

 4000、5000

6

Rated short circuit breaking current

KA

20

25

31.5

40

7

Rated short circuit making current (peak)

KA

50

63

80

100

8

Rated short circuit duration

S

4

9

Rated operating sequence

 

O-0.3S-CO-180S-CO                                        0-I80s-C0-I80s-C0 (40KA)

10

Rated single / bock Io back capacitor bank breaking current

A

630/400

11

Rated short circuit current breaking time

Times

30

12

Opening lime

ms

35-70

13

Closing lime

ms

20-50

14

Mechanical life

Times

10000

15

Rated energy storage and operating voltage

V

AC220/11ODC220/110

16

Contact stroke

mm

11 ±1

17

Contact overtravel

mm

3.5 ±0.5

18

Average closing speed

m/s

0.5-0.8

19

Average opening speed

m/s

0.9-1.2

20

Contact closing bounce time

ms

≤2

21

Three-phase opening.dosing asynchronous

ms

≤2

22

The main circuit resistance

μQ

≤50 (630A)≤45 (1250A)

≤35 (1600-2000A) 25 (more than 2500)

Main Technical Specification

Note: 1. No.11&12 are provided when needed.

2. Switchgear should be with cold wind when the rated current is 4000A.


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