| Height of the main structure of the substation: | |
| Standard | 2850 mm |
Placement of equipment
Mzb1 20/630-4"a”
Mzb1 20/630-3"b”
Mzb1 20/630-1"b”
| 1 | Walls, 120 mm thick - standard, 90 mm thick - optional Walls without holes - REI 120 fire integrity class |
| 2 | Ventilation louvres IP 23D - standard, IP 43 - optional In ventilation louvres mounted in walls with fire integrity class, fire dampers are installed (e.g. EI 60 or EIS 120) - optional |
| 3 | Doors: solid or with ventilation louvres, 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 |
Technical parameters / configuration possibilities
| Mass / area 3,06x1,71 (3x1,65) | |
| Main structure | 9 000 (8 000) kg |
| Concrete roof | 2 000 kg |
| Usable area | 4,06 m2 |
| Technical parameters / configuration possibilities | |||
| Transformer* (4) Maximum power / dimension | 630 kVA / 950 x 1550 x 1850 [mm] | ||
| Internal arc resistance classification | IAC-AB-20 kA-1s | ||
| Enclosure class | 10 | ||
| Electrical parameters of switchgears | MV | LV | |
| Rated voltage | up to 25 kV | up to 0,69 kV | |
| Rated current | 630 A | up to 1250 A | |
| Rated short-time withstand current | up to 25 kA (1s) | up to 25 kA (1s) | |
| Rated peak withstand current | up to 63 kA | up to 55 kA | |
| Switchgear** | Type | Maximum number of bays | |
| LV (5) | RN-W | 12 | |
| MV (6) | Rotoblok (1000 mm) | 1 (possibility only in „b” version) | |
| TPM / TPM Kompakt | 3 (TLL or WLL) / 4 (LLTL) | ||
* Transformer inserted from above, before the roof is attached.
** Detailed selection of switchgears and their equipment is listed in chapters dedicated to individual devices in the catalogue. Example layouts of switchgears and corresponding substation configurations are specified in parentheses. The possibility of installing other types and configurations of switchgears should be arranged every time with the substation manufacturer.