Solar Power Equipment Box-type Transformer(Prefabricated Substation)

Product overview: 

• A Solar Power Equipment Box-type Transformer that integrates 0.27kV 0.315kV 0.69kv voltage of grid-connected photovoltaic inverter into power grid output energy through a boost transformer.

•  High-voltage switchgear, transformer body and protective fuse are centrally placed in the oil tank. High-voltage/low-voltage pre-installed substation is set up together with low-voltage switchgear and corresponding auxiliary equipment.

•  Mainly used for small and medium-sized solar power generation.

•  Execution standard: IEC61850 series, GB/T17467, etc.

Product advantages：

Leading technology:

•  Standard anti-corrosion and salt spray environmental plan to meet the stringent environmental requirements of the site.

•  Compact structure, small footprint, easy installation.

•  Fully enclosed, fully insulated structure, safe and reliable operation.

•  Easy to operate, maintenance-free, low equipment cost.

Enclosure:

•  Adopt cold rolled high quality hot dip galvanized sheet.

•  The surface is treated by electrostatic spray, and the paint can not be taken off for 50 years.

•  Laser numerical control equipment cutting, drilling, bending, to ensure the processing accuracy.

•  Product structure is divided into three parts: high voltage chamber, low voltage chamber and transformer.

•  The cabinet is mainly pre-installed with: lightning arrester, load switch, transformer tap switch, protection fuse, oil level thermometer, oil level gauge, pressure relief valve, amount of oil discharge valve and other accessories.

•  The low-voltage side is equipped with main circuit breaker, overvoltage protector, and can be designed and installed in complete sets of automatic measurement and intelligent control system.

•  The transformer is a low loss oil-immersed transformer produced by WONE You Electric.

Functional units:

•  Fully sealed structure, using the transformer insulating oil as the insulating medium and heat dissipation medium, overall has the advantages of compact structure, good heat dissipation performance.

•  The high-voltage indoor door should be equipped with electromagnetic lock and live display. When the high-voltage side is live, the high-voltage chamber door cannot be opened.

• The external door of the box transformer should be equipped with mechanical lock to meet the five requirements of high-pressure products and ensure personal safety.

 Components:

•  Choose high-quality brand components such as Chint, Shanghai People Electric, Changshu Electric, etc.

•  Schneider, ABB high-quality partners.

Supplementary material：

•  High quality tin - plated busbar copper bar, with insulation sleeve.

•  Hanhe cable is selected for secondary wiring.

 Processing and assembly：

• Assembly workers have been trained for at least 6 months.

• Secondary wiring is fully automatic equipment cutting to ensure reliable wiring.

• Use power tools to ensure proper torque for bolting reinforcement.

• The copper wire bus is NC punched and bent.

• All kinds of experimental tests before leaving the factory to ensure normal operation.

Product parameters:

• Voltage：0.69kV/33kV  0.69kV/11kV.

Conditions of use：

•  Altitude: ≦2000m.

• Ambient temperature range: -45℃ -- +45℃.

• Outdoor wind speed: ≤35m/s.

• Relative humidity: daily mean ≤95%, monthly mean ≤90%.

• Installation location: Install in the place without fire, explosion risk, serious pollution, chemical corrosion and violent vibration.

• If the above normal operating conditions are exceeded, customers can contact our company for customized solutions.

• The above is suitable for 50/60Hz photovoltaic power generation system, the rated capacity of the transformer is 500~ 1600kVA.

Ordering instructions:

When ordering, the customer shall provide the following information:

• Main loop scheme diagram and secondary loop system diagram.

• Electrical schematic diagram of auxiliary circuit and wiring terminal layout.

•  Equipment layout drawing, combination drawing, floor plan drawing.

• Brand, model, specification and quantity of main electrical components of the equipment.

• Incoming and outgoing line method and cable specifications.

• Device surface color.

• Other special requirements can be negotiated with the manufacturer.