The WST type substation may be used in every situation where the placement of typical transformer substations is not possible due to architectural constraints. Since it occupies a very small area, it fits perfectly into landscapes of old towns, markets and squares surrounded by dense, old buildings, and it has a stylised façade which enables adapting it to the architecture of existing buildings.
The station is a building composed of four monolithic reinforced concrete castings with a circular cross-section, which include: foundations, main structure with MV and LV switchgears, main structure with transformer chamber, and roof.
| Substation height is specified as total above the ground level, with concrete roof | |
| Standard | 5200 mm |
Placement of equipment
Switchgear structure
Transformer chamber structure
| 1 | Walls, 130 mm thick — standard Fire integrity class REI 120 |
| 2 | Ventilation grating IP 23D - standard, IP 43 - optional |
| 3 | Doors: solid or with ventilation louvres without fire integrity IP 23D - standard, IP 43 - optional Doors with fire resistance e.g EI 60 or EI 120 - optional |
| 4 | Transformer |
| 5 | LV switchgear |
| 5a | AMI cabinet / Smart Grid / telemetry / auxiliary |
| 6 | MV switchgear |
| 7 | Cable duct hatch door |
| 8 | Hatch / ladder to the transformer chamber |
