10KV Double-winding Non-excited Voltage Regulating Distribution Transformer 30KVA 50KVA 80KVA 100KVA 3 Phase Oil-immersed

Henan GNEE Electric Co., Ltd. is one of the leading manufacturers and suppliers of 10kv double-winding non-excited voltage regulating distribution transformer 30kva 50kva 80kva 100kva 3 phase oil-immersed in China, also supports customized service with low price. Welcome to buy discount 10kv double-winding non-excited voltage regulating distribution transformer 30kva 50kva 80kva 100kva 3 phase oil-immersed for sale here from our factory. If you have any enquiry about pricelist, please feel free to email us.

This transformer features a dual-winding design with non-excited tap changers (±5% or ±2×2.5% voltage adjustment), enabling stable voltage output without external power for excitation. Ideal for 10KV/0.4KV grids, it supports industrial plants, renewable energy systems, and urban power networks. Encased in a robust, corrosion-resistant tank, it utilizes high-grade silicon steel and copper windings to minimize losses and enhance efficiency. Oil-immersed cooling ensures thermal stability in harsh environments, while simplified maintenance and compliance with IEC/GB standards guarantee reliability. Customizable configurations (e.g., protection class, tap settings) adapt to diverse grid demands, offering a durable, cost-effective solution for precise voltage regulation and energy-efficient power distribution.

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This product distinguishes itself through high stability, precise voltage regulation, environmental adaptability, and energy efficiency optimization, designed for industrial, commercial, and infrastructure applications. Key features are as follows:

1. Double-Winding Design: Enhanced Electrical Isolation and Short-Circuit Resistance

Technical Advantage: The transformer uses a double-winding structure, significantly improving insulation strength between the primary and secondary circuits compared to single-winding designs. This effectively isolates high- and low-voltage circuits, reducing short-circuit risks.

Application Value: Ideal for high-load industrial environments (e.g., metallurgy, chemical plants), where it can withstand frequent startups, sudden load changes, or impact loads, ensuring safe and reliable equipment operation.

2. Non-Excited Voltage Regulation: Stable Power Supply and Precise Voltage Control

Technical Advantage: The non-excited voltage regulation (tap changer) allows voltage adjustment without power interruption during maintenance (e.g., ±5% or ±2×2.5% range), ensuring output voltage remains within the 0.4kV standard.

Competitive Edge: Compared to on-load tap changers (OLTC), it eliminates the need for complex online control systems, reducing costs and simplifying maintenance. Unlike fixed-voltage transformers, it flexibly adapts to grid voltage fluctuations, preventing equipment damage from under-voltage or overvoltage.

3. Oil-Immersion Cooling: Efficient Heat Dissipation and Extreme Environment Tolerance

Technical Advantage: The oil-immersed sealed structure uses circulating insulation oil to rapidly dissipate heat, reducing temperature rise by over 30% compared to dry-type transformers. The oil layer forms a closed barrier, effectively resisting dust, high temperatures, and humidity.

Environmental Adaptability: Optimized for harsh environments such as metallurgical workshops, open-pit mines, or tropical regions. With a maximum operating temperature of 95°C and enhanced dust resistance, it achieves a 50% lower failure rate than conventional dry-type transformers.

4. Precise Capacity Adaptation: Versatile Solutions for Small-to-Medium Power Needs

Flexible Capacity Options: Offers 30kVA–100kVA configurations to precisely match requirements for small-to-medium factories, community power distribution, and data center backup systems, avoiding resource waste from over-sized equipment.

Modular Expandability: Supports parallel operation (e.g., two 50kVA units combined into a 100kVA system), enabling scalable power capacity for temporary infrastructure or phased production expansions.

5. Energy Efficiency and Safety Certification

Energy Efficiency Standards: Complies with IEC 60076-7 and national Tier 1 energy efficiency standards, reducing no-load losses by 15–20% and lowering lifecycle operational costs compared to conventional alternatives.

Safety Compliance: Features IP23 protection rating, a low-loss cold-rolled silicon steel core for fire resistance, and robust insulation design-meeting stringent safety requirements for hospitals, data centers, and other high-risk environments.

This transformer stands out through its double-winding architecture, non-excited voltage regulation, oil-immersion cooling, modular scalability, and rigorous safety standards, delivering superior reliability, environmental resilience, and cost-efficiency over traditional transformers. It is an ideal choice for industries and infrastructure projects with fluctuating power demands, harsh operating conditions, and strict stability requirements, offering a premium solution for upgrading small-to-medium power systems globally.

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