FN12 indoor air pressure LBS
General:It is a three phase H.V. switch equipment of 12KV, 50Hz for breaking or cl…
FN12 indoor air pressure LBS

FN12 indoor air pressure LBS

Detailed description

  • Description

General:

It is a three phase H.V. switch equipment of 12KV, 50Hz for breaking or closing load current., no-load transformer cable charging current and closing short-circuit current. The load switch with earth switch can bear short-circuit current.
It is made up of FN12-12D load switch and S()LAJ-12(XRNT()-10) H.V. current-limiting fuse box. It can break any current, load switch breaking working current and fuse box breaking short-circuit current, jointly breaking any current between short-circuit current. Meantime, fuse box make the switch off of with the striker.

Service Condition:
A. The ambient air temperature:  Max.: +40 °C. Min: -10 °C.
B. The altitude ≤ 1000m.
C. The relatire humidity of air. daily average ≤ 90%. monthly average ≤ 95%.
D. The ambient air should not be obviously polluted by corrosivity or the flammability gas and geam. etc.
E. Without frequent shake.
F. Enviroment degree: grade Ⅱ.
If requirements are not mentioned above, users can fix them with the manufacturer.


Technical date:

Number

Name

Unit

FN12-12D/630-20

FN12-12D.R/100-31.5

1

Rated voltage

kV

12

2

Rated frequency

Hz

50

3

Reated current

A

630

100

4

Lighting impulse resisting voltage

kV

75/85

5

1min power frequency with stand voltage

kV

42/48

6

Rated heat - stability current

kA

20(4S)

7

Rated machine-stability current

kA

50

8

Rated closing current (peak)

kA

50

9

Rated short-circuit breaking current

kA

31.5

10

Rated transfer current

kA

1.5

11

Max. breaking current

kA

1.8

12

Breaking no-load transformer capacity

Kva

1250

13

Rated cable charging current

A

10

14

Rated power load current breaking times

time

>100

15

Switch-off time of rated power load current switch on-and-off

S

>0.06

16

Earth switch heat-stability current

kA

20(2S)

20(2S)

17

Earth switch heat-stability curreak (peak)

kA

50

50

18

Motor operating power valtage

V

AC220,DC48


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