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FN18-12 Air pressure load break switch
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FN18-12 Air pressure load break switch
Detail

++++General:

   It is used in three-phase power distribuiton of AC 50Hz rated voltage 12kv and rated current 630A Esp For power ring network in city net work construction improvement high-rise buildings and public facilities as an ideal product to protect package substation and transformer It has the featrres of advanced design simple operation impact structruee smatr appearancelight weight complete function fast on-and off speed and high reliability.

++++Technical parameter:
Number
Name
Unit
FN18-12D/630
FN18-12DR/100-31.5
1
Rated voltage
KV
12
2
Rated frequency
Hz
50
3
Rated current
A
630
100
4
1min power frequency withstand volage
kv
To ground and interphase42 isolation break48
Lighting impulse resisting voltage
To ground and interphase75 isolation break85
5
Distance between phases
mm
170
6
Rated machine stabling current
KA
50

7
Rated heat-stabling current
KA/S
20/2

8
Rated cble chrgig current
A
10
9
Rated transfer current

1600
10
Switch-off no-load transformer capacity
KVA
1250
11
Rated short-circuit switch-off current(fuse value)
KA

31.5-50
12
Rated short-circuit controlly current(peak)
50
13
Rated power load switch-off current
630

14
Earth switch rated heat-stabling current
KA/S
16/2
15
Breaking times of rated power load current

100
16
Mechanical life
2000