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Medium voltage, Metal enclosed, Air-insulated switchgear
SF6 insulated circuit breaker in withdrawable version
Fully type tested in CESI laboratory, 24kV, 1250A, 25kA/1Sec.
Description and characteristics
- Metal-clad air-insulated switchboard.
- Compartments segregated by means of metallic partitions.
- Limited use of insulating materials.
- Complete with mechanical safety interlocks.
- Structure made of pre-galvanized sheet.
- Putting into service, maintenance and service operations can be carried out from the front.
- Equipped with conventional instrument transformers.
- Wide range of functional units for any all installation solutions.
- Easy-to-assemble modular structure.
- UniTec-FP is medium voltage metal-clad switchgear suitable for indoor installations.
- The unit compartments are metallically segregated from each other and the live parts are air insulated.
Environmental conditions
The switchgears are intended to use under the normal environmental conditions according to IEC for indoor installation:
| Minimum ambient temperature |
|
-5 °C |
| Maximum ambient temperature |
|
+40 °C |
| Average value in 24 hours |
|
+35 °C |
| Maximum relative humidity |
|
95% |
| Maximum altitude |
|
1000 m |
Electrical characteristics of the switchgear
| Rated voltage |
kV |
24 |
| Rated insulation level |
kV |
24 |
| Rated power frequency |
kV |
50 |
| Impulse withstand voltage |
kV |
125 |
| Rated frequency |
Hz |
50 |
| Main busbar rated current |
A |
2500 |
| Rated short-time withstand current (3s ) |
kA |
25 |
| Internal Arc (IAC) |
kA |
25 |
| Rated peak withstand current |
kV |
63 |
| Internal arc withstand current (0.5s) |
kA |
25 |
Degrees of protection
The protection degrees for standard switchgear are as fallow:
- External housing: IP4X
- Inside the units: IP2X.