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Compact Secondary Substation 11kv Compact Substation Power Transformer Box Electricity Substation
Buried box-type substation is mainly composed of buried transformer and outdoor switchgear of advertising light box. The buried transformer is a new type of compact substation equipment composed of a transformer, a high-voltage load switch, a fuse, etc., which is installed in a pit, does not occupy the surface space, and can be submerged in water for a period of time. The outdoor switchgear of advertising light box is a hybrid structure integrating billboards and outdoor switchgear, and is installed on the ground.The inside of the box is an outdoor high and low voltage power distribution cabinet, and both sides are advertising light boxes, which have excellent visual effects. The fully buried type is also called an underground substation. Its box has excellent anti-corrosion and compression resistance, and has absolute air tightness.
Product features:
1. It can greatly save land, without land acquisition and civil
construction, and save infrastructure investment.
2. There are no obstacles on the ground, which does not affect the
environment, and does not affect people's vision and scenery.
3. The fully buried type installed on the lawn and green belt can
also be designed with some decorative ornaments on the ground, such
as sculptures, rockery, etc.; if the ground requires no obstacles
(including ventilation ducts), you can choose a square type
prefabricated substation.
4. The power distribution equipment of the fully buried
prefabricated substation is set underground, which is safe and
reliable.
5. The ground is not affected by transformer noise.
6. As the underground is relatively shady and cool, the temperature
rise of the transformer is relatively stable during operation.
7. The internal space of the fully buried prefabricated substation
is relatively spacious, and the maintenance operation will not
cause interference on the ground, and will not interfere with the
surrounding environment.
Normal ambient conditions for service:
1. Altitude shall be within 2000m;
2. Ambient temperature range shall be : -40ºC~+40ºC;
3. Outdoor wind speed shall not exceeds 35m/s;
4. Relative humidity: daily average value shall not exceed 95%,
monthly average value 90%;
5. Service environment: installed in sites with no fire or
explosion danger, serious fifth, chemical corrosion and fierce
vibration.
6. When transcend the above normal ambient conditions for service,
users can negotiate with us to solve.
Parameter of 40.5kV oil immersed load switch
Item | Unit | Parameter | ||
Rated voltage | KV | 40.5Kv | ||
Rated current | A | 315 | 630 | |
Rated frequency | Hz | 50 | ||
Rated short-circuit withstand current | kA/2s | 12.5 | 20 | |
Rated peak withstand current | kA | 31.5 | 50 | |
Mechanical endurance | times | >2000 | ||
1 min power withstand voltage (phase-to-phase, phase-to-earth) | kV | 95 | ||
Lightning impulse level (phase-to-phase, phase-to-earth) | KV | 185 |