Product Details:

Product Description

The photovoltaic (PV) power generation inverter isolation transformer is a technology that directly converts light energy into electrical energy using the photovoltaic effect at the semiconductor interface. The key component of this technology is the solar cell. Solar cells are packaged together after being connected in series to form large-area solar modules. Combined with components such as power controllers, this forms a photovoltaic power generation system. PV transformers are generally used for solar inverters. Because the photovoltaic transformer itself has low photoelectric efficiency, it specifically requires high transformer efficiency.
For grid-connected PV inverter isolation transformers, the grid-side connection is dyn11, while the inverter side is yd5, with a phase shift of 120 degrees. The PV isolation transformer can be set to operate during the day and stop at night, reducing no-load energy loss.

Main Technical Parameters of PV Transformers:
 Rated Capacity: 5kVA-1000kVA
 Input Voltage: Rated 270V or 315V
 Input Current: According to actual voltage
 Output Voltage: Rated 380V or 400V
 Output Current: According to actual voltage
 Connection Type: Dyn11 or Yyno
 Efficiency: ≥98.5%
 Frequency: 50Hz/60Hz
 Insulation Resistance: 25A less than 500MΩ
 Induced Withstand Voltage: 125Hz/800V/60s
 Insulation Class: H (Temperature resistant 180°C)
 Noise: ≤30dB
 Temperature Rise: ≤ permissible rise of 115K
 Impedance Voltage Drop: ≤4%
 Structure: Forced air cooling; temperature controller activates the fan automatically at a set temperature according to customer requirements.
 Protection Level: IP00
 Interference Resistance: Copper foil isolation, shield grounded
 Waveform Distortion: No additional waveform distortion
 Electrical Strength: 3000V AC sinusoidal for one minute without breakdown or flashover
 Insulation Resistance: (Input/output to ground): Test voltage at least 1000VDC, insulation resistance greater than 1000MΩ
 Overload Capacity: Twice the rated current for one minute.

Characteristics of Isolation Transformers:

Due to the specific nature of photovoltaic power generation, large-scale deployment of grid-connected PV systems may pose risks to the reliability and stability of the power grid, such as harmonics, flicker, DC bias, overvoltage, etc. An effective method is to add a JINBAI isolation transformer between the grid and the grid-connected inverter, creating effective isolation between the inverter and the grid.

1. Altitude not exceeding 4000m;
2. Ambient temperature: not lower than -25°C, not higher than 40°C;
3. Current and voltage waveforms similar to sinusoidal wave;
4. Location not exposed to rain or snow, without significant shaking or vibration impact;
5. Free from explosive media, and no gases or conductive dust capable of corroding metal or damaging insulation.