Products
Substations
Medium voltage switchgear, a transformer and low voltage distribution supplied together, so what arrives on site is one item to set rather than three to integrate.
Specified by
- Transformer
- rating and voltage pairsets the rest of the station
- Medium voltage side
- ring main unit or panelsset by the network connection
- Low voltage side
- incomer and outgoing waysset by the loads
- Enclosure
- operated from outside or walk inset by site and operating practice
- Standard
- IEC 62271-202AC prefabricated substations up to 52 kV
Buying a substation as a station rather than as parts moves the integration risk to the manufacturer. A prefabricated station is type tested with its equipment inside it, so the internal arc behaviour and the temperature rise are proven for the assembly rather than inferred from its components.
The choice between the types below is mostly about the site and the operating practice. A compact station keeps the footprint small and is operated from outside. A walk in station has an internal aisle. A package substation close couples the equipment on a common base without a building around it.
Substation types
Station types compared
| Type | What defines it | Trade off |
|---|---|---|
| Compact substation | A prefabricated enclosure, type tested with its contents | Small footprint, operated through external doors |
| Walk in substation | A prefabricated enclosure with an internal operating aisle | More floor area, easier operation in poor weather |
| Package substation | Switchgear, transformer and low voltage cabinet close coupled on a common base | No building, quick to install, exposed to the weather through its own enclosures |
| Building integrated | Equipment installed in a room within a building | No external footprint, the room becomes part of the design |
Related
Send us the requirement
Send the rating, the voltage and the destination, or submit the specification, drawing or nameplate. Anything missing is raised before it reaches a supplier.