Indoor AC High-voltage Vacuum Load Break Switch FN12-24RD

Indoor AC High-voltage Vacuum Load Break Switch FN12-24RD

1.Rated voltage: 24kV
2.Three phases AC 50Hz
3.It can be equipped with earthing switch with capability of making short circuit current.
4.Two operation modes: electrical and manual.
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Product Details

FN12-24RD type indoor AC high-voltage vacuum load switch and its composite apparatus is three phases AC 50Hz, rated voltage of 24KV.

It can be equipped with earthing switch with capability of making short circuit current.

The operating mechanism can be operated by electrical or manual, which is easy to realize remote control.


Applying ambient conditions of indoor AC high-voltage vacuum load switch FN12-24RD

a.Ambient temperature: -10℃~+40℃.

b.The height above sea level: no more than 1000m.

c.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%.

d.Seismic intensity: below 8 degrees.


Main technical specification of indoor AC high-voltage vacuum load switch FN12-24RD

Main technical specification of   FN12-24RD Type Indoor AC High-voltage Vacuum Load Break Switch

S.N.

Name

Unit

Data

1

Rated voltage

KV

24

2

Rated frequency

Hz

50

3

Rated current

A

630

4

Max. rated current of fuse

A

100

5

Rated active load breaking current, rated closed loop

breaking current

A

630

6

Rated short time withstand current (2S)

KA

20

7

Rated short circuit making current, rated peak withstand

current

KA

50

8

1min power frequency withstand voltage, between phases

and to ground/gap

KV

65/79

9

Lightning impulse withstand voltage (peak) between

phases and to ground/gap

KV

125/145

10

Rated cable-charging breaking current

A

16

11

Rated breaking no-load transformer

KVA

1250

12

Mechanical life

times

2000

13

Rated breaking transfer current

A

1050

14

Rated short circuit breaking current of fuse

KA

31.5


Mechanical parameters of FN12-24RD Type Indoor AC High-voltage Vacuum Load Break Switch

S.N.

Name

Unit

Data

Remark

1

Phase distance

mm

300±3


2

Total stroke of conducting rod

mm

290±5


3

Contact clearance of fixed and moved contact at

opening position

mm

215


4

Electrical contact overstroke of moved contact

rod

mm

42±3


5

Closing speed when first touch

 

m/s

+0.7

2.8

-0.2


6

Opening speed when first touch

m/s

1.7


7

Non-synchronism of three-phase closing

ms

10

Contact of moving contact rod

and contact finger

8

Non-synchronism of three-phase opening

ms

5

Separation of moving contact rod and contact finger

Mechanical parameters of earthing switch

S.N.

Name

Unit

Data

Remark

1

Contact clearance of fixed and moved contact at

opening position

mm

230


2

Non-synchronism of three-phase closing

ms

10



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