CEEG’s Voltage Regulating Furnace Transformer for France's Saint-Gobain

CEEG has successfully delivered the HKSSPZ-13000/15 special voltage regulating furnace transformer to Saint-Gobain in 2024, a renowned multinational based in France specializing in a range of construction and high-performance materials. As part of this comprehensive service, CEEG deployed staff for on-site installation and commissioning to ensure seamless integration and optimal performance.

Our solution stood out from multiple competitors, primarily due to CEEG's ability to meet specific, high-demand requirements, meanwhile offering a competitive price.  Saint-Gobain’s manufacturing process necessitates a furnace transformer that can handle high currents and extensive load fluctuations reliably while maintaining precise voltage control. CEEG's solution ensured the HKSSPZ-13000/15 was not only capable of delivering the required power but also equipped with superior control and durability under high-stress conditions.

Technical Highlights of the HKSSPZ-13000/15:

Precision Voltage Regulation

The transformer integrates fine and coarse adjustment windings on the high-voltage side, achieving a 63-level step output. This results in a low-voltage range of 532-100V with a current capacity reaching 16,000A, achieved through the constant flux of the main transformer and the alternating flux of the series transformer.

Advanced Structural Design

To address winding and assembly complexities, CEEG developed a dual-transformer body regulating structure alongside an "8"-shaped low-voltage coil. Specialized winding molds and lifting tools were utilized to ensure reliable assembly and operation.

Thermal and Magnetic Stability

Through extensive simulation analyses of the temperature and leakage magnetic fields, as well as prototype testing, CEEG resolved issues related to local overheating during extended overloads (up to 130%) and managed the over 40% imbalance in the low-voltage side three-phase current, ensuring consistent, safe operation.

Eddy Current Reduction

A same-phase reverse parallel structure and special corner sealing measures on the low-voltage side effectively reduced eddy current losses caused by high currents, enhancing transformer efficiency.

Enhanced Operational Efficiency

Equipped with the German-made MR ETOS ED intelligent control cabinet, the transformer enables remote digital monitoring and control via an embedded automatic voltage regulator and management system. This feature significantly boosts operational efficiency and reduces maintenance costs.

CEEG is dedicated to delivering high-quality, reliable transformer solutions tailored to the specific needs of global clients. This project with Saint-Gobain reflects our commitment to technical innovation and customer-focused service, supporting our partners in achieving efficient, resilient operations across diverse industries.