HENTG POWER 500kVA 33kV/0.4kV Oil Immersed Distribution Transformer ONAN Type Step Down Power Transformer Manufacturer
HENTG POWER 500kVA 33kV/0.4kV Oil Immersed Distribution Transformer is a high-performance ONAN type step-down power transformer designed for medium-voltage distribution networks. Engineered in accordance with IEC 60076 standards, it ensures stable voltage conversion from 33kV to
500kVA oil immersed transformer
,33kV step down power transformer
,ONAN type distribution transformer
Product Overview
The HENTG POWER 500kVA 33kV/0.4kV oil immersed distribution transformer is designed for reliable and efficient power distribution in medium-voltage systems. Utilizing advanced silicon steel core technology and high-quality copper windings, the transformer delivers stable performance under varying load conditions.
With ONAN cooling, it ensures effective heat dissipation without requiring auxiliary cooling equipment, making it ideal for outdoor and industrial applications.

Performance Advantages
Low No-load Loss & Load Loss
Designed with high-permeability silicon steel core and optimized winding structure, the transformer significantly reduces no-load loss and load loss. This improves overall energy efficiency, lowers operating costs, and meets international energy-saving standards. Ideal for long-term continuous operation in distribution networks.
High Short-circuit Strength
The transformer is engineered with reinforced winding structure and strong mechanical support to withstand high short-circuit currents. Advanced clamping design ensures structural stability during fault conditions, enhancing system reliability and safety in industrial and utility applications.
Excellent Overload Capability
Stable Voltage Regulation
Precision-designed winding ratio and strict manufacturing tolerances ensure excellent voltage regulation performance. The transformer delivers stable output voltage under varying load conditions, protecting downstream equipment from voltage fluctuation risks.
Low Noise Operation
Using high-quality silicon steel laminations and vibration-reduction structural design, the transformer operates with low acoustic noise levels. Suitable for urban substations, commercial areas, and noise-sensitive environments.
Long Service Life (20+ Years)
Manufactured with high-grade materials, hermetically sealed tank design, and anti-corrosion surface treatment, the transformer ensures long-term durability even in harsh environments. With proper maintenance, service life exceeds 20 years, providing reliable return on investment.
Company Introduction
HENTG POWER is a professional power transformer manufacturer with over 15 years of experience in designing and manufacturing medium and low voltage transformers.
With a modern production base covering 100,000 square meters and more than 250 skilled employees, including over 30 senior engineers, we operate 8 advanced production lines and achieve an annual production capacity exceeding 20,000 sets.

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