The 8DJ20 switchgear is a factory-assembled, type-tested, metal-enclosed switchgear for indoor installation, used for power distribution in substations. It is suitable for industrial environments, damp, sandy or dusty areas, and some special outdoor substations. It has a highly compact design and can be used in compact substations, wind power stations, etc.
The 8DJ20 switchgear is a factory‑assembled, type‑tested, metal‑enclosed medium‑voltage solution for indoor installation, suitable for compact substations, underground vaults, and harsh industrial environments. It offers up to five feeders, maintenance‑free operation, and a hermetically sealed primary enclosure that is climate‑independent.
The catalog details technical specifications such as rated voltage up to 24 kV, various current ratings, pressure levels, and optional equipment like HV HRC fuse assemblies, pressure absorber systems, and motor‑operated mechanisms. It also includes dimensions, mounting options, and safety features like capacitive voltage detection and logical mechanical interlocks.
| Rated voltage (U) kV | 7.2, 12, 15, 17.5, 24 |
|---|---|
| Rated short‑duration insulation level kV | 20, 28, 36, 38, 50 |
| Rated lightning impulse voltage kV | 60, 75, 95, 95, 125 |
| Rated normal current for ring‑main feeders | 400 A or 630 A |
| Rated normal current for transformer feeders | 200 A |
| Rated filling pressure (absolute) | 1500 hPa |
| Minimum functional pressure (absolute) | 1300 hPa |
| Weight of HV HRC fuse assembly | ≈ 110 kg |
The 8DJ20 is rated for up to 24 kV.