In the current industrial smelting sector, medium and large electric arc furnaces and induction furnaces often face issues such as insufficient voltage regulation accuracy, frequent overloading shutdowns, inadequate heat dissipation, high energy consumption, and weak resistance to harsh working conditions during production. These problems directly impact smelting efficiency, product quality, and corporate production costs. In response, Hongwei Power has designed a 5000kVA, 10kV/0.6kV specification electric furnace transformer solution tailored to customer requirements. The core objective is to meet the needs of medium and large industrial smelting scenarios. Through technical optimization and process upgrades, the solution aims to achieve stable and efficient smelting processes and long-term reliable equipment operation, helping enterprises reduce costs, improve efficiency, and enhance production competitiveness.

Product Model: Customized 5000kVA Transformer for Electric Furnaces, Suitable for Medium/Large Arc Furnaces and Induction Furnace Smelting Production Lines

Voltage levels: 10kV high voltage and 0.6kV low voltage. This industrial-standard high-voltage power supply system is designed to meet the low-voltage power requirements of electric furnaces.

Rated capacity: 5000kVA. A single electric furnace operates continuously at full load for smelting, supporting multi-furnace collaborative production.

Pressure regulation method: multi-tap precise pressure regulation; power matching for all stages of electric furnace including arc initiation, melting, refining, heating, and holding.

Cooling method: forced oil circulation combined with high-efficiency air cooling. This system is designed for high-temperature, high-dust industrial smelting workshops operating at full capacity for extended periods.

Winding Structure: Tangled/Spiral Special Winding for High Current Density, High-Frequency Voltage Regulation, and Shock Resistance Applications

1. Precise Voltage Regulation for Stable Production: Featuring a multi-stage voltage control module, it enables precise and wide-range voltage adjustment to meet power demands at different smelting stages. This effectively prevents temperature instability and substandard metal purity caused by voltage fluctuations, ensuring uninterrupted production and product consistency.

2. High Impact and Overload Resistance: The equipment features reinforced structural design capable of withstanding 150% rated load impact for short durations. This robust design effectively handles sudden overload scenarios during electric furnace startups or material feeding operations, preventing frequent equipment shutdowns and significantly improving production line efficiency.

3. Enhanced Durability and Reliability: Through optimized winding and core manufacturing processes, combined with high-strength insulation materials and a secure mounting structure, the system achieves short-circuit resistance far exceeding industry standards. This effectively mitigates risks such as short-circuit failures and equipment vibrations during smelting, extending the equipment's service life by over 30%.

4. High-efficiency Energy Saving and Cost Reduction: By optimizing core technologies, the equipment achieves reduced copper and iron losses, with an energy conversion efficiency exceeding 96.5%. Compared to traditional electric furnace transformers of the same capacity, this results in annual electricity savings of over 80,000 kWh, significantly lowering corporate energy costs.

1. Customized winding design: Crafted from high-conductivity copper, the winding features either braided or spiral configurations with multi-tap structures. This design flexibly accommodates varying voltage levels and current density requirements across different furnace types, while minimizing winding heat dissipation to enhance operational stability.

2. Intelligent and Efficient Cooling: The system combines forced oil circulation with high-efficiency air cooling, featuring an intelligent temperature control module that automatically optimizes heat dissipation based on real-time operating temperatures. This rapid heat removal effectively manages the substantial thermal output during smelting processes, ensuring stable and consistent equipment performance while adapting to harsh industrial environments.

3. End-to-end process optimization: Tailored adjustments to transformer impedance characteristics precisely align with the full smelting cycle of electric arc furnaces (EAF) – from arc initiation to melting and refining–and induction furnaces (IF) – from heating to holding. This approach reduces energy consumption while boosting smelting efficiency and metal purity, ultimately enhancing both production capacity and product quality.

The winding process has been upgraded by abandoning traditional winding methods, adopting high-conductivity copper materials with tightly braided or spiral winding, and combining them with high-strength insulation protection. This innovation addresses the issues of high copper losses, severe heat generation, insufficient voltage regulation accuracy, easy aging of windings, and weak impact resistance in conventional transformers.

The cooling system has been upgraded to a forced oil circulation and high-efficiency air-cooling hybrid mode, with the addition of intelligent temperature control and heat dissipation monitoring modules. In large-scale smelting scenarios, the industry's pain point lies in delayed equipment heat dissipation, frequent overheating-induced shutdowns, and inability to sustain full-load operation for extended periods.

Structural strength enhancement: The core clamping structure is optimized, and a special anti-seismic and deformation-resistant casing is adopted to improve the overall sealing and protective performance of the equipment. The smelting workshop is characterized by high vibration and excessive dust, which can lead to equipment loosening, accelerated insulation aging, and insufficient short-circuit fault resistance.

Process adaptation enhancement: Customized optimization of transformer impedance parameters and voltage regulation curves based on the characteristics of different smelting processes. Traditional transformers exhibit poor process adaptability, resulting in high energy consumption, significant temperature fluctuations during smelting, and consequently lower smelting efficiency and product quality.

1. Pre-sales phase: Our technical team provides one-on-one on-site consultations. By analyzing the client's specific needs—including electric furnace type, smelting process, production capacity, and power supply conditions—we precisely match product specifications and deliver customized solutions with energy efficiency optimization recommendations, ensuring the plan fully aligns with actual production requirements.

2. Mid-sales phase: We provide end-to-end support including equipment installation guidance, wiring and commissioning training, and on-site technical support. Our services assist clients in equipment positioning, system integration, and initial trial operation, ensuring swift production deployment.

3. Post-sales service: We provide lifetime technical support, including regular equipment inspections, rapid fault diagnosis and maintenance, as well as equipment upgrades. We regularly release maintenance guidelines and industry updates, promptly resolving equipment issues in production to ensure long-term stable and efficient operation.

The 5000kVA electric furnace transformer solution delivers precise parameter configuration, core technology upgrades, and end-to-end service support. It effectively resolves critical challenges in industrial smelting, including inaccurate voltage regulation, inadequate overload capacity, poor heat dissipation, high energy consumption, and low reliability. Furthermore, it significantly enhances smelting efficiency, ensures product quality, and reduces operational and maintenance costs for enterprises. This solution provides stable, efficient, and energy-saving power support for medium-to-large smelting enterprises, driving their high-quality production and development.