Our company manufactures three-phase oil-immersed distribution transformers featuring an advanced body insulation design that significantly enhances short-circuit withstand capability. The core is constructed from premium cold-rolled silicon steel laminations. For the high-voltage winding, we utilize high-grade oxygen-free copper wire arranged in a multi-layer cylindrical configuration. All fasteners receive specialized anti-corrosion treatment. The unit incorporates a corrugated, fully-sealed tank. This product is characterized by high efficiency and low losses, leading to substantial savings in power consumption and operational expenses. It delivers notable social benefits and is recognized as a nationally-promoted high-tech product.

Reliable structure

Building upon conventional designs and proven technology, our company has implemented numerous enhancements, including:

① The use of spiral coils with longitudinal oil ducts for superior internal cooling.

② Enhanced effective support at the coil ends, providing increased resilience against short-circuit currents.

③ The adoption of innovative lifting and core positioning systems to ensure greater reliability during long-distance transport and operation.

④ A variety of other unique and robust structural features designed to serve our customers.

⑤ Models with higher performance ratings, which embody a more advanced level of technical sophistication.

⑥ A fully-sealed tank structure that isolates the transformer from the atmosphere. This prevents and retards oil degradation and insulation moisture absorption, boosts operational reliability, and eliminates the need for maintenance under normal operating conditions.

High quality materials

All raw materials undergo stringent quality inspections, and their manufacturers are rigorously assessed in compliance with the ISO9000 national standard.

① We select oxygen-free copper wire with lower resistivity, which then undergoes additional surface treatments to achieve a smoother finish free of burrs and sharp edges. This results in reduced load loss and more dependable transformer electrical performance.

② High-quality silicon steel sheets are selected. For higher performance levels, we use sheets with lower unit loss to minimize transformer no-load loss.

③ High-grade laminated wood insulation components are employed, ensuring they remain crack-free and immovable even under short-circuit current stress.

④ Deep-filtered transformer oil is selected, featuring lower levels of water, gas, and impurities for more reliable transformer operation.

⑤ Premium rubber sealing materials are used to effectively resist aging and prevent any leakage.

Normal usage conditions

Altitude: Not exceeding 1000m;

Ambient Temperature:  Maximum temperature: +40°C; Average temperature of the hottest month: +30°C; Maximum yearly average temperature: +20°C; Minimum outdoor temperature: -25°C.

Power Supply Voltage: The waveform should approximate a sine wave. For three-phase transformers, the three-phase supply voltage should be substantially symmetrical.

Installation environment: No obvious pollution in the installation environment; Ground acceleration caused by earthquake ag: Horizontal direction below 3m/s², vertical direction below 1.5m/s²

Special usage conditions

Any special service conditions falling outside the normal parameters specified above must be clearly stated during the inquiry and order placement process.