40.5KV High Voltage Photovoltaic Box Transformer Prefabricated Substation

The output voltage of the photovoltaic generator set generally used in China is 690V, and it is necessary to achieve the purpose of long-distance power transmission by boosting the voltage. In the photovoltaic power field - generally use cables to connect the generator to a special box boost transformer to raise the voltage to 40.5 or 12kV and then send it to the photovoltaic power field central substation, and then from the central substation step-by-step boost to the grid, the combination of photovoltaic generator and box boost transformer adopts a one-machine transformer unit connection. Our company's design and development of 40.5 and 12kV photovoltaic special voltage boosts are to meet this demand and project development.

Model meaning

Normal usage environment for 40.5KV High Voltage Photovoltaic Box Transformer Prefabricated Substation

1. The altitude does not exceed 1000m.

2. The ambient air temperature is not higher than +50C, not lower than -25C; .

3. Relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%.

4. Outdoor wind speed does not exceed 35m/s.

5. The installation site is free from fire, explosion danger, serious pollution, chemical corrosion and violent vibration. A small amount of dust, smoke, salt spray and corrosive gas pollution are allowed, and the pollution level does not exceed I|.

6. Earthquake intensity: VII degree;

7. Ground horizontal acceleration ≤0.2m/s Vertical acceleration ≤0.1m/s', safety factor 1.67.

Note: Under the use environment, when the use site exceeds the requirements of normal use environmental conditions, the user needs to negotiate with the manufacturer.

Functions and features for 40.5KV High Voltage Photovoltaic Box Transformer Prefabricated Substation

1. High-voltage switchgear, transformer, low-voltage switchgear three-body, complete sets of strong;

2. Perfect high and low-pressure protection, safe and reliable operation, and simple maintenance;

3. Small footprint, provincial investment, short production cycle, easy to move;

4. Flexible wiring scheme;

5. Structure: Honeycomb structure double layer (composite plate) shell is firm, heat insulation and heat dissipation ventilation, beautiful, high protection level, shell materials are stainless steel alloy, aluminum alloy, cold rolled plate, color steel plate is optional;

6. Various types: universal type, villa type, compact and other styles;

7. The network automation terminal (FTU) can be assembled in the high voltage ring network cabinet to realize the reliable detection of short circuits and single-phase grounding faults and has the "four-remote" function to facilitate the automatic upgrade of the distribution network.

Main technical parameters for 40.5KV High Voltage Photovoltaic Box Transformer Prefabricated Substation

40.5KV High Voltage Photovoltaic Box Transformer Prefabricated Substation acceptance, installation and commissioning

◆ When the user receives the goods, they should be carefully checked according to the relevant regulations. In the case of immediate installation, it should be stored in the appropriate place according to the normal conditions of use, and attention should be paid to the storage of the box.

◆ The installation basis should be made in strict accordance with the basic drawing provided by the manufacturer or jointly formulated by the two sides. The installation site should have enough loading and unloading space, and the unloading process should also run according to the loading requirements.

◆ The box should be reliably grounded after it is changed into place, the grounding device should share a group of ground devices, the grounding resistance should be less than 1 port and no less than two ground leads should be led from the grounding network to the box. The gap between the base of the container and the foundation is sealed with a cement slurry to prevent rainwater from entering the cable room.

◆ Because it is an outdoor installation, both parties shall immediately organize product acceptance, acceptance standards for the ordering technical agreement and national standards, and check spare parts; spare parts drawings are complete and then signed by both parties.

40.5KV High Voltage Photovoltaic Box Transformer Prefabricated Substation outline and mounting dimensions