FN18-24 Air Pressure Load Break Switch
Standard Specification++++General:
FN18-24 Load break switch, disconnector used for the 24kV 50Hz power systems.This switch is installed indoor, can match with the manual and motor operating machanism.This switch can match with the fuse and the earthing switch.
++++Main technicals：
|
No. |
Item |
Unit |
Parameters |
|
1 |
Rated Voltage |
kV |
24 |
|
2 |
2Maximum Service Voltage |
kV |
25.8 |
|
3 |
Withstand Voltage to earth and between poles |
kV |
50 |
|
4 |
Withstand voltage across the isolating distance |
kV |
60 |
|
5 |
Impulse withstand voltage to earth and between poles |
kV |
125 |
|
6 |
Impluse withstand voltage across the isolating distance |
kV |
145 |
|
7 |
Rated current |
A |
400 630 800 |
|
8 |
Breaking capacity for active circuits (cos Ø0.7) |
A |
400 630 800 |
|
9 |
Breaking capacity for no-load transformers |
A |
16 |
|
10 |
Breaking capacity for no-load line and cables |
A |
25 |
|
11 |
Short-time current |
kA/1s |
20 |
|
12 |
Making Capacity |
kA |
40 |