35kV 38kV 38.5kV Intelligent three-phase on-load tap-changing power transformer

Three phase power transformer Overview

As a core power equipment, the 35kV three phase Power Transformer (three-phase on-load tap-changing type) has achieved a series of major innovations in materials, processes and structures. This on-load Power Transformer features the multiple advantages of small size, light weight, high efficiency, low loss, low noise and reliable operation. The three phase Power Transformer can significantly reduce power grid losses and operation costs, creating remarkable economic benefits. As a high-performance on-load Power Transformer, it is widely applicable to scenarios such as power plants, substations and large industrial and mining enterprises, providing stable power conversion support for various power systems.

On-load power transformer product Features

• High Efficiency & Low Loss Performance：This three phase Power Transformer adopts an optimized electromagnetic design and high-quality iron core materials, with no-load and load losses reduced by more than 8% compared with industry standards, achieving first-class energy efficiency. As a dedicated on-load Power Transformer, its low-loss characteristics can save users substantial power grid operation costs in the long run, meeting the requirements of energy conservation and carbon reduction.
• Precise Intelligent Voltage Regulation：This on-load Power Transformer is equipped with a high-precision intelligent voltage regulation module, which can realize stepless voltage regulation under load conditions with a voltage regulation accuracy of ≤±0.5%. Combined with the balanced power supply design of the three phase Power Transformer, it can stably output voltage and avoid damage to downstream equipment caused by voltage fluctuations.
• Compact & Reliable Structure：The three phase Power Transformer adopts an integrated sealed structure and lightweight casing design, with its volume reduced by 15% compared with traditional products, facilitating outdoor transportation and installation. Meanwhile, the windings of this on-load Power Transformer are reinforced, and its short-circuit withstand capacity far exceeds national standards, greatly improving operational stability.
• Quiet & Energy-Saving Operation：Through optimized iron core shock absorption and winding noise reduction design, the noise of this three phase Power Transformer is ≤55dB under rated load, making it suitable for noise-sensitive scenarios such as industrial parks and suburban substations. As a low-noise on-load Power Transformer, it can balance equipment operation efficiency and surrounding environmental comfort.
• Wide-Range Adaptability：This on-load Power Transformer supports voltage level switching among 35kV/38kV/38.5kV, enabling flexible adaptation to different power grid architectures. Combined with the high-temperature-resistant insulation system of the three phase Power Transformer, it can operate stably in the temperature range of -30℃~+40℃, adapting to complex working conditions such as high altitude and large temperature differences.
• Convenient Intelligent Operation & Maintenance：This three phase Power Transformer has built-in multi-dimensional monitoring sensors that can collect real-time data such as oil temperature, winding temperature and voltage regulation status. The intelligent diagnosis function of the on-load Power Transformer can early warn potential faults, reducing the frequency of manual inspections and lowering the difficulty and cost of operation and maintenance.

On-load power transformer Technical Specifications

• Device Type: Outdoor
• Ambient Temperature: Maximum +40℃, Minimum -30℃
• Altitude: ≤1000m (Temperature rise correction is required when altitude >1000m)
• Relative Humidity: ≤90% (at 25℃)
• Installation Site: Areas free of corrosive gases and significant pollution