63kv 66kv Oil Immersed Power Transformer

The 66kV power transformer is a medium- and high-voltage power transmission and distribution transformer designed and manufactured in strict accordance with GB and IEC standards. It utilizes oil-immersed insulation and cooling technology, using natural cooling, air cooling, water cooling, or forced oil circulation to ensure stable operation under various loads. Its core structure includes key components such as the core, windings, oil tank, oil pillow, radiator, insulating bushing, tap changer, and gas relay. Through comprehensive optimized design and precision manufacturing, it achieves a significant leap in product performance.

66kv Transformer Parameters

Product Features

1. Excellent Electrical and Mechanical Performance: Through our proprietary calculation and verification procedures, core components such as the core, coil, and leads are precisely optimized, resulting in products with high electrical and mechanical strength, capable of withstanding severe grid surges and short-circuit currents.

2. Energy-Saving, Environmentally Friendly, and Economically Efficient: The product features low losses (both no-load and loaded) and low noise levels, effectively reducing power station operating costs, complying with national industrial policies for energy conservation and consumption reduction, and enhancing the overall economic benefits of the power grid.

3. Extremely High Operational Reliability: The low partial discharge design and fully sealed, no-hanging core structure effectively prevent moisture and aging of the insulating oil, significantly reducing maintenance workload, extending the equipment life, and ensuring absolute long-term operational reliability.

4. Compact Structure and Superior Design: Superior craftsmanship and material selection ensure the transformer maintains performance while achieving the advantages of small size and light weight, facilitating transportation and installation, and saving space. The winding arrangement (core-low voltage-medium voltage-high voltage) of the step-down three-winding transformer is optimized to optimize impedance distribution and meet system protection requirements.

5. Excellent grid adaptability: One winding in the three-winding design is typically connected in a delta configuration, effectively suppressing third harmonics, improving voltage waveform quality, and ensuring high-standard adaptability to modern power grids.

Wide Application

Due to their stable and reliable performance, the 66kV power transformer is suitable for a variety of harsh environments. Its main applications are:

Traditional power systems: major power plants and regional substations, serving as key nodes for power transmission and distribution.

Urban infrastructure: power supply systems in densely populated areas such as high-rise buildings, commercial centers, subways, airports, and train stations.
Large-scale industrial sectors: industrial and mining enterprises, petrochemical bases, and other locations with extremely high requirements for power supply continuity and safety.
Harsh environments: particularly suitable for offshore drilling platforms, oil production platforms, and special environments such as flammable and explosive environments. Its fully sealed and rugged structure provides extremely high safety assurance.

Our R&D Advantages

TSTY currently has 600 employees and a technical R&D team of over 200 people. It has established a science and technology innovation center to focus on material and process innovation and realize independent research and development of transformers. Relying on the national CNAS certified laboratory, each product passes more than ten rigorous tests such as lightning impulse and insulation no-load loss to ensure stable operation in all environments.

Project Case

Our products are exported to more than 80 countries and regions, serving power projects in various regions.

About TSTY

TSTY Electric Co., Ltd is a national high-tech enterprise with a history of more than 30 years, focusing on the intelligent manufacturing of power transmission and distribution equipment. It mainly deals in oil-immersed, dry-type transformers, box-type substations, high and low voltage switchgear and have obtained ISO 9001, CCC, CE, IEC, GOST and other certifications, 158 patents, and are exported to more than 80 countries.  Factory scale: 250,000 square meters of park, 15 production lines (including 3 intelligent lines), equipped with 220+ intelligent equipment.  Production capacity efficiency: annual output value of 1.5 billion yuan, product qualification rate> 99.8%.