LLSG photovoltaic three-phase isolation transformer

This series of products after years of further absorption of the advantages of similar products at home and abroad, the use of, process and rigorous design for manufacturing, and optimization of foreign, method of terminal, the utility model has the advantages of excellent performance, reliable operation, low energy consumption, small size, wiring safety, high protection grade, wide applicability, etc. . The application of cold-rolled silicon steel sheet superimposition, the special paint-dipping process effectively reduces the vibration and noise in operation, and the introduction of new processes and technologies, such as the design of insulation materials, make the transformer more energy-saving, under the rated load can work for a long time, is an ideal and superior transformer power supply.
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  • Product Description
  • Product parameters
  • Photovoltaic three-phase isolation transformer is based on the evolution of three-phase coherent isolation transformer. In addition to changing the voltage, the input and output windings can be electrically isolated from each other, and the primary and secondary windings can be copper foil isolated to filter harmonics and avoid current waveform distortion polluting the city power grid, to avoid the danger of touching both the live parts (or metal parts that may be charged due to damaged insulation) and the ground. The isolation transformer is a widely used measure to suppress the interference of the power line, which can solve the interference between the equipments brought by the ground circuit. The input and output voltages of the isolated transformer can be designed as required, with single-phase, three-phase or multi-input and output, triangle connection and star connection, rated maximum power (2500KVA) . Advanced Winding Machine and a complete set of vacuum pressure varnishing equipment are used to make the windings. The whole set of transformer is dipped in step by step, and the method of increasing baking temperature of 60 ° C, 80 ° C, 100 ° C and 120 ° C is adopted to make the insulating paint better adhere to the coil, the utility model can effectively reduce the noise, loss, temperature rise of the transformer and increase the service life of the transformer.


    Product details advantage:

    Leilang photovoltaic three-phase isolation transformer can be customized according to the specific requirements of customers.

    The standard design includes the following features:

    1. Class H enameled aluminum or copper windings are available upon request.

    2. Ultra-low core loss and high efficiency amorphous and CRGO steels for solar power system applications.

    3. Low residual flux density amorphous core design for applications with specific impulse current requirements.

    4. The transformer is vacuum impregnated with class H varnish and the iron core is coated with epoxy resin. Effectively reduce the vibration and noise in the process of operation, improve the electrical strength, anti-rust anti-corrosion, extend service life.

    5. The oblique connection core structure and the core clamping are protected under the short circuit condition.

    6. Dry air natural transformer with PT100 temperature probe and controller.

    7. Outdoor use of custom waterproof shell

    8, ISO-9001:2025 quality control system.



    this series of single-phase transformer is widely used in new energy power generation and energy storage.

  • 技术参数
    产品型号 LLSG / SG
    额定容量 0.1KVA ~ 2500KVA (可定制)
    输入电压 1V~10000V (可定制)
    输出电压 1V~10000V (可定制)
    相数 三相
    频率 50Hz / 60Hz 
    绝缘等级 F级/ H级 (可选)
    连接方式 Dyn11 (可定制)
    绕组线材 H级 漆包铝线 或 铜线 (可选)
    绝缘方式 H级绝缘漆真空浸漆
    耐压测试 初级对次级2.5KV/1分钟
    绝缘电阻 初级对次级2500V大于100兆欧
    感应耐压 2倍频率/ 2倍电压 /1分钟
    接地电阻 25A<80毫欧
    温升 F级≤100K;H级≤125K
    阻抗电压 约4%
    变    比 <3%
    冷却方式 自冷或风冷
    防护等级 IP20,IP23,IP45,IP54,IP65 (可定制)
    噪   音 ≤35-65dB (1米内)    
    工作效率 ≥98%            
    环境温度 -25℃~+40℃
    海拔高度 ﹤2000M

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