High Accuracy Special High Current Transformer For Testing Equipment And Electrolytic

Special Transformer (High Current Transformer)

technical parameters

Capacity range: single-phase 2kVA-250kVA;  3-phase 5kVA-1000kVA
Efficiency: ≥ 97%
Insulation class: F/H
Temperature rise: ≤ 100K
Noise level: ≤ 55dB
Frequency: 50/60Hz

Product Features

1. Using high-quality silicon steel sheets, with low no-load loss, low noise, and low temperature rise.
2. Using high-quality polyester enameled wire or film-insulated wire, with high temperature resistance and excellent insulation performance.
3.  Interlayer insulation made of DuPont Nomex insulating paper featuring high temperature resistance, high voltage endurance and flame      retardancy.
4. The maximum output current is 25000A.

Process Characteristics

The optimized winding structure and magnetic flux design greatly reduce harmonic loss, eddy current loss and extra temperature rise, and prevent overheating and accelerated insulation aging induced by harmonics in conventional transformers.
 
Windings are manufactured via VPI (Vacuum Pressure Impregnation) process, including vacuum degassing, pressure impregnation and integral high-temperature curing. The insulating resin fully fills all gaps between wire turns, winding layers and insulation materials, achieving bubble-free, void-free windings with ultra-low porosity. This technology completely eliminates common drawbacks of conventional varnished transformers such as moisture ingress, dust accumulation and internal void discharge. It ensures low partial discharge, uniform and stable insulation performance, and rules out insulation breakdown risks during long-term operation.
 

Scope of application

Testing equipment, electrolytic power supply, electric furnace heating, etc.