Box Type Electric Substation
Box type electric substations are suitable for 12 kV, 50 Hz rated frequency, three-phase AC systems, and capacity configurations below 2000 kVA, such as residential areas, commercial hotels, large construction sites, high-rise buildings, industrial and mining sites, and temporary workplaces. It...
Description
Box type electric substations are suitable for 12 kV, 50 Hz rated frequency, three-phase AC systems, and capacity configurations below 2000 kVA, such as residential areas, commercial hotels, large construction sites, high-rise buildings, industrial and mining sites, and temporary workplaces. It is suitable for ring network power supply and also suitable for radial terminal power supply.
It has the advantages of compact structure, complete set, safe and reliable operation, convenient maintenance, and beautiful appearance. Moreover, it also has other features such as small size, small footprint, wide range of options, easy on-site installation, short installation and commissioning time, and movement with the load center.
Working environment:
Temperature range: -25°C to +40°C.
Altitude: ≤1000 m. If special transformers and low-voltage components are used, the altitude can reach up to 3000 m.
Vertical gradient: ≤5°.
The workplace should avoid severe vibration and impact, conductive dust, explosion hazards, corrosive metals and electrical equipment components.
Air humidity: ≤90% (+25°C).
Outdoor wind speed: ≤35 m/s.
Technical parameters
| Items | High voltage unit | Transformer | Low voltage unit |
|---|---|---|---|
| Rated voltage (kV) | 12 | 10/0.4 | 0.4 |
| Rated current (A) | 630 - 1250 | - | - |
| Rated frequency (Hz) | 50 | 50 | 50 |
| Rated capacity (kVA) | - | 300 - 2000 | - |
| 1 min power frequency withstand voltage (kV) | Phase-earth and phase-phase: 42, across open contacts: 48 | 35/28 | 2.0/2.5 |
| Lightning impulse withstand voltage (kV) | 75 | 75 | - |
| Protection degree | IP23 | ||
| Noise level (dB) | - | Oil immersed: ≤ 55 Dry-type: ≤ 65 | - |
| Overall size (mm) | According to the specific program | ||
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