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location:Return ZN63A(VS1)-24
ZN63A(VS1)-24
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Indoor High Voltage Vacuum Circuit Breaker

ZN63A(VS1)-24

VTZ24-31.jpg


1.General  Description

ZN63A(VS1)-24 series of Indoor High Voltage Vacuum Circuit Breaker

with embedded poles is 3 phase A.C.50 Hz indoor power distribution equipment with the rated voltage of 24kV. It's used for protecting and controlling the

electrical equipment in fields of industry&mining enterprise. power plants and substation.

The vacuum circuit breaker with spring mechanism is embedded pole that

can greatly improve the reliability of insulation, mechanical and breaking performance.and  own free maintance and long mechanical&electrical life.

The Vacuum Circuit Breaker conforms to national standards and IEC standard. The capability reaches grade of M2-E2-C2.The product is used for many kinds of switchgears such as KYN28-24 and can be fixed installation.

2.Applying  conditions:

Ambient temperature;-10----+40

Relative humidity:daily average ≤95%,monthly average ≤90%

Seismic intensity ≤8

Saturated vapor pressuredaily average ≤2.2kPamonthly average≤1.8kPa

Altitude:≤1000m;(Not including special requirement

Service environmentshould be avoided fire, explosion risk, serious pollution, chemical corrosion and violent vibration

3.Technical specification

No.

Item

Unit

Data

1

Rated voltage

kV

24

2

Rated frequency

Hz

50/60

3

Rated insulation levels

Rated power frequency withstand voltage/1min

kV

65

Rated lighting impulse withstand voltage

kV

125

4

Rated current

A

630

1250

1600

2000

2500

3150

5

Rated short circuit breaking current                        Rated short time   withstand current(4s)

kA

20

20





25

25

25





31.5

31.5

31.5

31.5

31.5

6

Rated short circuit making current(peak)                  Rated withstand   current(peak)

kA

50

50





63

63

63





80

80

80

80

80

7

Rated duration of short circuit

s

4

8

Rated operating sequence


O-0.3s-CO-180s-CO

9

Mechanical life

Times

30000

10*

Rated single capacitor bank breaking current

A

400

11*

Rated back to back capacitor bank breaking current

A

400

12

Max DC component


50%

Remark:

      1.No.11 &No.12 is offered while user need.


4.Overall drawing








Overall drawing of fixed circuit breaker


6.Secondary connection diagram




Secondary connection diagram of withdrawable type circuit breaker




Secondary connection diagram of fixed type circuit breaker







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