Product Introduction
Photovoltaic Transformer is a specialized transformer engineered for photovoltaic (PV) power generation systems. Its core function is to step up the low voltage output from PV panels to a high voltage suitable for grid connection, thereby enhancing power transmission efficiency and ensuring system stability. Oil-immersed transformers are commonly adopted for this application. The enclosure of such transformers is typically treated with anti-corrosion coatings and features thermal insulation design, boasting a protection class of up to IP54. This enables it to adapt to a wide temperature range and operate stably in harsh environments such as sandy, dusty, and salt-spray conditions.
Scope of Supply
Product: Photovoltaic Transformer;
Number of phases: 3 phase;
Rated power: up to 12500 kVA;
Primary voltage: 0.4kV, 0.69kV;
Secondary voltage: 10KV, 35KV;
Vector Group: Dyn11;
Customizable production: Available.
Customizable production
Customization of PV transformers involves personalized design of parameters, structure, and performance based on the specific scenarios and technical requirements of PV power plants, ensuring high compatibility between the equipment and the overall system. The Photovoltaic Transformer can be tailored to meet diverse project needs, making it adaptable to various application environments.
1. Core Demand Scenarios for Customization
Customization of PV transformers is usually driven by the following special requirements: Grid connection differences; Extreme environmental conditions; Space constraints; Special functional requirements; Capacity and load characteristics.
2, Core Demand Scenarios for Customization
Electrical parameter customization: Voltage level, Short-circuit impedance, Vector group, Loss level; Structure and material customization: Thermal design, Protection class, Insulation material, Appearance and installation; Functional module customization: Intelligent monitoring.
Application scenarios and characteristics
1. Large-scale ground-mounted PV power stations
2. Distributed industrial and commercial PV systems
3. Agrivoltaic/fishery-voltaic complementary projects
4. Rooftop distributed PV (residential/small commercial)
5. Special environment PV power stations: Plateau PV, Coastal PV, Mountain PV.
The core application principle of PV transformers is to "adapt to the scale and environment of the power plant": large-scale power stations prioritize capacity and weather resistance, distributed projects focus on safety and flexibility, and special scenarios require targeted customization of protection and structure. Its design must take into account the characteristics of large fluctuations in PV output and high harmonic content, ensuring compatibility with inverters and power grids to achieve efficient and stable power transmission.
Execution standards
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35kV oil-immersed three-phase double-winding non-excitation voltage regulation transformer for photovoltaic, wind power, and energy storage on the new energy generation side. Voltage range: 35kV~38.5kV (high-voltage side); 0.4kV~1.14kV (low-voltage side).
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35kV~38.5 kV/0.4 kV~ 1. 14kV |
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rated capacity |
Level 1 |
Level 2 |
Level 3 |
impedance |
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No load loss |
No load loss(75 ℃) |
No load loss |
No load loss(75 ℃) |
No load loss |
No load loss(75 ℃) |
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1000 |
0.6 |
10.4 |
0.8 |
10.4 |
0.9 |
10.9 |
6. 0~ 14. 0 |
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1250 |
0.8 |
12.5 |
0.9 |
12.5 |
1.1 |
13.2 |
|
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1600 |
0.9 |
14.9 |
1.1 |
14.9 |
1.3 |
15.8 |
|
|
2000 |
1.2 |
16.5 |
1.4 |
16.5 |
1.5 |
17.4 |
|
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2500 |
1.4 |
17.6 |
1.7 |
17.6 |
1.8 |
19.6 |
|
|
3000 |
1.6 |
20.3 |
1.9 |
20.3 |
2.1 |
22.5 |
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3150 |
1.7 |
20.7 |
2.0 |
20.7 |
2.2 |
23.0 |
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4000 |
2.0 |
24.6 |
2.3 |
24.6 |
2.6 |
27.3 |
|
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4500 |
2.2 |
27.1 |
2.6 |
27.1 |
3.0 |
30.1 |
|
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5000 |
2.4 |
28.2 |
2.8 |
28.2 |
3.2 |
31.3 |
|
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5500 |
2.6 |
30.3 |
3.0 |
30.3 |
3.5 |
33.6 |
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6300 |
2.9 |
31.5 |
3.4 |
31.5 |
3.8 |
35.0 |
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8000 |
4.0 |
34.6 |
4.7 |
34.6 |
5.2 |
38.1 |
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10000 |
4.8 |
40.8 |
5.7 |
40.8 |
6.3 |
45.3 |
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12500 |
5.6 |
50.7 |
6.5 |
50.7 |
7.2 |
56.3 |
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Note: "35 kV~38.5 kV" refers to the voltage range on the high voltage side; 0.4 kV~1.14 kV "represents the voltage range on the low voltage side . |
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Customer Case
2500kVA PV Transformer for Agrivoltaic Complementary Power Station in the North China Plain, China. Located in an agricultural area of the North China Plain, this project adopts the "agrivoltaic complementary" model-growing crops such as wheat and soybeans under PV panels, realizing PV power generation without affecting agricultural production. This customized transformer integrates "PV grid connection + agricultural power supply" through a dual-winding design, eliminating the need for additional investment in agricultural transformers and saving approximately 150,000 RMB in equipment costs per unit. The project not only improves land use efficiency (with a PV output of about 3,000 RMB per mu per year and an agricultural output of about 2,000 RMB per mu per year) but also provides a cost-effective power solution for the "agrivoltaic complementary" model.
FAQ
Q: How are goods transported? How is the freight calculated?
A: Shipping method is determined by order quantity: Small batch/samples: International express (DHL/UPS/FedEx), 3-7 days delivery, freight calculated by weight/volume; Large quantity: Ocean freight (container shipping), 20-40 days delivery, freight quoted based on destination port and container type. We can assist in arranging transportation, and customers may also designate their own freight forwarders.
Q: What documents are required for customs clearance? Will you assist in handling it?
A: Customs clearance documents include commercial invoice, packing list, bill of lading, certificate of origin (CO/FORM A), and product certification report (e.g., CE certificate). We provide a complete set of documents and guide customers to fill out forms required by local customs; additional documents (such as embassy authentication) can be negotiated (separate fees apply).
Q: Do you provide installation guidance or technical support?
A: Yes. We provide English installation manual, wiring diagram, and maintenance guide along with the goods; remote technical guidance is available via video conference or email. On-site installation support can be negotiated (travel expenses borne by the customer) if required.
Q: Can you provide product testing reports or factory inspection records?
A: Sure. Each transformer undergoes more than 10 tests before delivery, including insulation test, load test, and temperature rise test. Detailed English test reports are available to ensure product performance meets standards.
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