Rockwill Electric Group
FN18-12 Air pressure load break switch
FN18-12 Air pressure load break switch. It is used in three-phase power distribution of AC 50Hz rated voltage 12kv and rated current 630A Esp for power ring network in city network construction. ...

Detailed description

  • Description

General:

It is used in three-phase power distribution 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 featrues of advanced design simple operation impact structure smart appearance light weight complete function fast on-and off speed and high reliability.

 

Technical data:

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

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