Special Transformer

Your Professional Special Transformer Supplier

 

Hebei Hozee Electric Co., Ltd., a professional Chinese distribution transformer manufacturer registered in Shijiazhuang, Hebei, adheres to "Efficient, Intelligent, Green" and is led by founder/CTO Liu Yanchao (15+ years in transformers) and his team of senior engineers (avg. 8+ years, mastering IEC/GB standards).It provides customized solutions (for voltage, working conditions, load) to serve domestic industrial/new energy/grid upgrade markets and over 50 countries globally. Future-focused on tech innovation, aiming to support the global energy transition.

 

 
  • Photovoltaic Transformer
    Rated power: 2500 kva Photovoltaic transformer
    Primary voltage: 690V
    Secondary voltage: 35000V
    Impedance:6-8%
    Connect groups:Dyn11
    Frequency:50hz
    read more

 
Why Choose Us
 

Our Certificate
3 intelligent production lines with an annual production capacity of 500,000 kVA. It has passed ISO 9001 and ISO 14001 certifications, and the products comply with standards such as GB/T and IEC 60076.

 

Production Equipment
Our core equipment includes: slitting machines, horizontal shearing machines, horizontal shearing winding machines, and annealing furnaces; transformer equipment includes: foil winding machines, winding machines, drying furnaces, casting tanks, and transformer testing equipment.

 

Production Market
Our products are exported to countries along the "Belt and Road" such AS Southeast Asia, the Middle East, Latin America and Africa. They are adapted to different climatic conditions (such as tropical high humidity, desert high temperature and plateau low pressure) and power grid standards (IEC, ANSI, BS, AS/NZS, etc.), and have passed international certifications such as CE, CB and SASO, achieving "localized technology and global quality".

 

Technical Team
Our team of senior engineers, with an average of 8+ years of experience, excels in distribution transformer principles, market demands, and international standards (IEC, GB).

 

Advantages of Photovoltaic Transformer

Increased energy efficiency: Well-designed transformers minimize energy losses, ensuring more of the electricity produced by solar panels is used.

 

System protection: They protect the system by assisting with load regulation and preventing damage to other components like inverters. They also provide safety through galvanic isolation, which shields equipment and users from electrical problems on the DC side.

 

Improved grid compliance: Transformers help the PV system meet strict utility requirements for voltage, frequency, and harmonic content before sending power to the grid.

Enhanced durability and longevity

By regulating load and protecting components, transformers extend the overall lifespan of the solar power system. Some sources note that the systems can last for over 30 years with low maintenance.

Safety

Transformers provide a crucial safety feature by isolating the DC and AC sides of the system, preventing the transfer of certain electrical faults.

Reduced voltage fluctuations

Transformers help to smooth out voltage, preventing issues caused by voltage fluctuation.

 

Specification

 

35kV~38.5 kV/0.4 kV~ 1. 14kV

Rated capacity
KVA

Level 1

Level 2

Level 3

Impedance
%

No load loss
KW

No load loss(75 ℃)
KW

No load loss
KW

No load loss(75 ℃)
KW

No load loss
KW

No load loss(75 ℃)
KW

1000

0.6

10.4

0.8

10.4

0.9

10.9

6. 0~ 14. 0

1250

0.8

12.5

0.9

12.5

1.1

13.2

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

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

3150

1.7

20.7

2.0

20.7

2.2

23.0

4000

2.0

24.6

2.3

24.6

2.6

27.3

4500

2.2

27.1

2.6

27.1

3.0

30.1

5000

2.4

28.2

2.8

28.2

3.2

31.3

5500

2.6

30.3

3.0

30.3

3.5

33.6

6300

2.9

31.5

3.4

31.5

3.8

35.0

8000

4.0

34.6

4.7

34.6

5.2

38.1

10000

4.8

40.8

5.7

40.8

6.3

45.3

12500

5.6

50.7

6.5

50.7

7.2

56.3

 

Installation and Configuration of Photovoltaic Transformer

 
 

Firstly, ensure that you have selected the appropriate transformer that is compatible with your solar panels and meets the specific requirements of your solar energy system.

 
 

Next, inspect the transformer for any physical damage, and verify that all necessary accessories and components are available before installation.

 
 

Then, position the transformer in a location where it can be easily accessed for maintenance, while being protected from any external damage.

 
 

Now, connect the transformer to the appropriate circuits and electrical cables as per the manufacturer’s instructions. Ensure that all connections are secure and tight to prevent any damage or energy loss.

 
 

After all the connections are made and triple-checked for safety, check the voltage level to ensure proper power distribution. Adjust the voltage level as necessary, and in accordance with safety regulations.

 
 

If the transformer is equipped with a fuse, examine the fuse carefully to make sure it is properly installed and not burned-out.

 
 

Finally, turn on the transformer and verify that it is functioning correctly. Check for any abnormalities in voltage levels or physical behavior, and troubleshoot any issues if necessary.

 

 

How It Photovoltaic Transformer Works

 

Solar Energy Collection

Solar panels capture sunlight and convert it into DC electricity. This process involves photovoltaic cells that generate direct current based on sunlight exposure.

01

DC to AC Conversion

The DC electricity flows into an inverter, which converts it into alternating current (AC). This step is essential because most electrical grids operate on AC power.

02

Voltage Regulation

The AC output from the inverter often needs to be stepped up or adjusted to match grid standards. This is where the PV transformer comes into play, transforming the voltage to appropriate levels.

03

Power Transfer

The transformed electricity is then transmitted through power lines to the grid or local consumers. The PV transformer ensures minimal energy loss during this transfer.

04

Protection & Monitoring

Throughout this process, the transformer and associated systems monitor parameters like voltage, current, and temperature to prevent faults and optimize performance.

05

 

Photovoltaic Transformer

 

Application of Photovoltaic Transformer

Utility-Scale Solar Farms: PV transformers are used to step up voltage levels for large solar installations, enabling efficient transmission over long distances. They help reduce energy losses and improve overall system reliability.

 

Commercial & Industrial Installations: Businesses installing solar panels on rooftops or grounds rely on PV transformers to connect their systems to the local grid, ensuring compliance with voltage standards and safety regulations.

 

Remote & Off-Grid Applications: In isolated areas, PV transformers facilitate local energy distribution, supporting rural electrification and off-grid solar solutions.

 

Hybrid Power Systems: PV transformers integrate solar with other renewable sources like wind or diesel generators, optimizing energy flow and stability.

 

FAQ

 

Q: What distinguishes PV transformers from standard distribution transformers?

A: PV transformers feature reinforced insulation systems to handle DC bias from inverters, higher harmonic withstand capability (K-factor >4), and wider voltage regulation ranges (±10% vs ±5%). They're optimized for bidirectional power flow during cloud-cover fluctuations.

Q: How often should PV transformers undergo maintenance?

A: Annual infrared inspections for hotspot detection and dissolved gas analysis every 24 months for oil-filled units. Dry-type transformers require dust cleaning quarterly in arid regions and winding resistance tests biennially.

Q: What efficiency standards apply to commercial PV transformers?

A: EU Tier 2 regulations mandate >98.7% efficiency at 50% load for 1-3MVA units. DOE 2016 standards require >99% for 1,000-1,500kVA transformers in North America.

Q: Can existing transformers be retrofitted for solar farms?

A: Only if originally designed with <2% impedance and equipped with harmonic mitigation. Retrofitting costs typically exceed 60% of new PV-specific units due to required filter additions and tap-changer modifications.

We're professional special transformer manufacturers and suppliers in China, specialized in providing high quality products with advanced design. We warmly welcome you to buy special transformer at competitive price from our factory. For specifications and drawings, contact us now.

Photovoltaic Transformer, special transformer