66 kV Oil-immersed Three-phase Two-winding On-load Tap-changing Power Transformer

Our transformers are available in a wide range of capacities and configurations to meet project requirements, suitable for applications of all scales. Customization is supported based on specific voltage, power and environmental requirements. They are widely used in industrial, commercial and utility sectors. Featuring cost efficiency and stable operation, these transformers help optimize your energy distribution network.

Model

SZ – 3150 ~ 63000 kVA

S：Three-phase

Z：on-load tap changing

Main Technical Parameters

Voltage Class: 66 kV

Rated Capacity Range: 3150~63000 kVA

Vector Group: Dyn11 / YNd11

Core Material: Silicon Steel

Core Type: Laminated Core

Voltage Regulation: On-load Voltage Regulation

 

Contact us for detailed information.

 

Main Application Features

Lower Loss and No-load Current

Our transformers are designed with advanced computer simulation software to optimize energy efficiency. Combined with our sophisticated manufacturing processes, they effectively reduce customers’ operating costs.

Superior Electrical, Mechanical and Thermal Performance

1. Through meticulous electric field calculation and winding arrangement, our transformers achieve enhanced dielectric strength and reliable insulation performance.

2. Comprehensive mechanical strength tests are carried out, and the design is optimized for extreme working conditions such as short circuits to deliver strong short-circuit withstand capability.

3. Advanced fluid dynamics analysis and upgraded cooling systems are adopted to improve thermal resistance. The transformer maintains safe temperature levels even under prolonged operation at normal load.

Greatly Reduced Noise Level

For better environmental performance and applications with strict noise requirements such as urban residential areas, our transformers are equipped with low-noise cooling fans and high-quality core materials. The noise level is significantly reduced (8–10 dB lower than the national standard).

Backed by advanced technology and a sound quality assurance system, we guarantee a longer service life and higher reliability of the transformers under normal operating conditions.