Power System 50Hz/60Hz, Three Phase
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
Huajidian auto power transformers employ a single-set continuous winding structure, with the input and output terminals sharing a portion of the winding. Flexible voltage boosting, bucking, and precise voltage stabilization are achieved through different taps on the winding. The product is manufactured strictly in accordance with the latest national standards for dry-type power transformers, featuring no waveform distortion, low noise, heat and moisture resistance, chemical corrosion resistance, and long-term stable operation. It is the preferred voltage stabilization equipment for industrial, commercial, and precision electronics fields.
Autotransformers are optimized and upgraded based on traditional transformer principles. After the entire winding of the equipment is connected to the rated voltage, a stable magnetic field is formed inside the iron core. By drawing winding coils with different numbers of turns, the required voltage is output.
The equipment operates using a dual energy transfer mode: part of the electrical energy is transferred through magnetic field induction, and the other part is directly transmitted through a common winding. This structure significantly reduces material loss and operating energy consumption, improving energy transmission efficiency; however, there is no electrical isolation between the input and output terminals, which is its core difference from an isolation transformer.
Based on the winding tap design, the product supports three core functions: step-down, step-up, and small-amplitude voltage stabilization correction, adapting to the voltage matching needs of various equipment.
Designed specifically for low-voltage civil equipment and building power distribution systems, it features a compact structure and convenient installation. Suitable for household appliances, building lighting, and small low-voltage equipment, it achieves stable voltage conversion, ensuring stable power supply to the end user.
Adapted to high-power industrial scenarios, it is widely used in factory power distribution, large motor starting, and industrial grid voltage stabilization. It can stabilize the operating voltage of high-power mechanical equipment, suppress grid fluctuation losses, ensure continuous and stable operation of the production line, and reduce industrial energy consumption.
Adopting a toroidal core structure, it solves the drawbacks of traditional transformers, such as high electromagnetic interference and high noise. It boasts advantages such as low electromagnetic interference, high efficiency, and quiet operation, making it suitable for scenarios with extremely high power quality requirements, such as high-end audio equipment, precision electronic instruments, and high-precision testing equipment.
The shared winding structure significantly reduces copper and iron losses, achieving an operating efficiency of ≥98%. There is no waveform distortion during power transmission, resulting in minimal energy loss and long-term savings in equipment operating costs for users.
Compared to traditional transformers of the same capacity, it requires fewer materials, is smaller in size, and lighter in weight, significantly reducing transportation and installation difficulties. It is suitable for various limited installation spaces, such as factories and commercial buildings.
Complies with the latest national standards for dry-type transformers, operating with low noise and no harmonic interference. Utilizing low-carbon, heat-resistant, moisture-proof, and corrosion-resistant composite materials, it is suitable for complex working conditions and can operate stably and unattended for extended periods.
Optimized structure effectively reduces production costs, while the equipment boasts a low failure rate, requires minimal maintenance, and has a long service life, ensuring high performance and creating long-term economic benefits for users.
Huajidian auto power transformer undergoes rigorous performance testing, ensuring reliable and standardized parameters suitable for most common operating conditions:
1. Operating Efficiency: ≥98%
2. Waveform Performance: No waveform distortion, no harmonic interference
3. Protection Function: Built-in overcurrent protection, supporting long-term unattended operation
4. Insulation Resistance: ≥50MΩ
5. Electrical Strength: Withstands 2000V voltage for 1 minute without breakdown or flashover
6. Overload Capacity: Withstands twice the rated current for 1 minute
7. Ambient Temperature: -15℃ ~ +40℃
8. Applicable Altitude: Up to 1000 meters
9. Relative Humidity: <90%
Installation Precautions: The installation site must be free of explosive gases, chemical vapors, and conductive dust. Ensure the equipment is properly insulated and operates safely.
In a chemical industrial park in East China, a 160kW chemical centrifugal pump experienced an instantaneous starting current as high as 800A upon direct start-up, frequently causing grid voltage fluctuations and equipment shutdowns, resulting in multiple production interruptions each month and significant economic losses. After the park upgraded its facilities using Huajidian's three-phase auto power transformer, the starting current was stabilized at 320A through 65% winding tap optimization, completely resolving voltage fluctuations and downtime issues. The equipment operates stably year-round with zero faults, effectively extending the lifespan of the machinery.
Q1: What is the core difference between an auto power transformer and a regular isolation transformer?
A1：The core difference lies in the winding structure and energy transfer method. Huajidian's auto power transformer shares input and output windings, employing a dual magneto-electric energy transfer method, resulting in higher energy efficiency, smaller size, and lower cost, but lacking electrical isolation. An isolation transformer has completely independent primary and secondary windings, transferring energy only through the magnetic field, providing electrical isolation. Therefore, auto power transformers are suitable for industrial voltage stabilization and substation scenarios, while isolation transformers are suitable for scenarios requiring electrical safety isolation.
Q2: In which scenarios is Huajidian's auto power transformer suitable?
A2：Our products cover all power supply and voltage stabilization needs: single-phase models are suitable for home appliances, lighting, and small low-voltage equipment; three-phase models are suitable for industrial production lines, large motor starting, factory power distribution, and grid voltage regulation; and toroidal models are specifically designed for high-end audio equipment, precision instruments, and high-precision testing equipment, enabling step-up, step-down, and precise voltage stabilization in various medium and low-voltage scenarios.
Q3: Will the shared winding structure affect the transformer's safety and lifespan?
A3：No. Huajidian autotransformers are manufactured strictly according to national standards, with built-in overcurrent protection, and have passed 2000V withstand voltage testing and 2x overload current testing. The equipment uses high-quality composite materials that are temperature-resistant, moisture-proof, and corrosion-resistant, ensuring strong environmental adaptability and a long service life. The shared winding only optimizes the energy transfer structure and does not affect the equipment's safety performance. It fully complies with international industry standards and can operate stably unattended for extended periods.
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Room 2106, West End, Guangfeng Building, Ouhai District, Wenzhou City, Zhejiang Province, China
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