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UniSwitch is air-insulated (AIS) and metal-enclosed.
UniSwitch provides long-term technical solutions for various applications. Safety, user-friendliness and environmental concerns have been the driving forces in the development of the switchgear. UniSwitch switchgear is a compact solution for a fully automated power distribution network. Supported by high technology and the latest in protection relays, it meets even the most demanding requirements in different applications.
UniSwitch can be used in various applications in the distribution network. UniSwitch offers a wide range of panels, making it possible to identify the most cost-efficient solution for all applications by combining the available panel types.
Ambient conditions
The switchboard ratings are guaranteed under the following ambient conditions:
| Minimum ambient temperature |
|
-5 °C |
| Maximum ambient temperature |
|
+40 °C |
| Maximum relative humidity |
|
95% |
| Maximum altitude |
|
1000 m |
Switchgear electrical characteristics
| Rated voltage |
kV |
12 |
17.5 |
24 |
| Rated insulation voltage |
kV |
12 |
17.5 |
50 |
| Test voltage at power frequency |
kV |
28 |
38 |
125 |
| Impulse withstand voltage |
kV |
75 |
95 |
50-60 |
| Rated frequency |
Hz |
50-60 |
50-60 |
50-60 |
|
Rated short-time withstand current
Rated duration of short circuit |
kA
Sec.
|
25
1/2
|
20
1/3 |
20
1/3 |
| Peak current |
kA |
62.5 |
50 |
50 |
| Internal arc withstand current |
kA 1s |
20 |
20 |
20 |
|
Bus bar rated current
Feeder rated current |
A |
630/1250
630
|
630/1250
630
|
630
630
|