Large Power Transformers

As one of the main products of Kechang Electric's high-capacity equipment series, large-scale power transformers are designed for demanding power transmission and distribution applications. Designed according to IEC60076 and GB1094 standards, they support capacities from 6300kVA to 60,000 kVA and voltage levels up to 35kV. These devices play a key role in power networks, industrial complexes, and large-scale infrastructure systems to ensure reliable conversion and transmission of electricity under heavy loads.

In order to improve the overall efficiency, the transformer adopts a grain-oriented silicon steel core with low power loss. The iron core is made of thin, high-quality laminates and arranged in a precise step-by-step lap manner, which reduces hysteresis and eddy current loss. Compared with common industry designs, load loss can be reduced by 10%-15%, helping to reduce long-term operating costs. This configuration supports modern goals of reducing energy consumption and emissions.

In order to manage the heat generated during high-capacity operation, the transformer relies on a forced oil circulation cooling system. The pump quickly moves the insulating oil through the windings and radiator, thereby effectively taking away heat. This keeps the temperature rise of the winding at ≤65k, helps prevent insulation deterioration, and maintains stable performance even at 110% overload. Cooling options can be adjusted according to installation location and environmental restrictions.

In order to extend the service life, the winding of the transformer adopts a reinforced insulation system. High-purity copper conductors are wrapped in multiple insulating layers and impregnated with vacuum pressure to enhance structural stability. This enhances resistance to short-circuit forces and supports more than 100,000 hours of reliable operation. The shell is made of heavy-duty steel with anti-corrosion protection, which enables the equipment to operate reliably in harsh industrial environments.

These units can be configured to meet project-specific requirements. Parameters such as capacity, voltage ratio, winding setting and cooling arrangement can be customized according to engineering drawings and application needs. Typical use cases include the upgrading of mining, metallurgy, petrochemical sites, and urban distribution networks. Technical support covers every stage from early design discussion to on-site commissioning.

Integrated monitoring components can track temperature, oil level, and local discharge activity. This information can be sent to a remote control center via a wired or wireless link, enabling operators to observe operating conditions in real time and proactively plan maintenance. This helps reduce the need for manual inspections and supports safe and continuous operation.

 

• Customized Design: We can customize voltage, windings, capacity, and losses to meet customer requirements.
• Technical Support: Our professional technical team provides comprehensive support, from selection and installation to commissioning, to ensure stable and efficient transformer operation. We also offer professional training to familiarize customers with transformer operation and maintenance.
• Long-term After-Sales Service: We offer ongoing maintenance and repair services, including regular inspections, troubleshooting, and technical upgrades, ensuring equipment reliability and durability.
• Emergency Response: If a transformer malfunction or anomaly occurs during operation, we provide 24/7 service to quickly resolve the issue and minimize losses.
• Transportation: We offer a variety of shipping methods, including sea, air, rail, and truck transport, ensuring customers receive their goods safely and in good condition.