40 kVA three-phase auto transformer can be customized for you, primary and secondary voltages of 120V, 208V, 380V, 440V AC, enameled copper/aluminum wires, IP20 protective enclosure. The unique design of 3-phase auto transformers make them a vital part of induction motors, industrial machinery.
Three Phase Auto Transformer Specification
Note: * denotes optional and customized parameters and you can select every parameter in drop-down lists to complete your order.
|Winding Material*||Enameled copper wire or enameled aluminum wire (Optional)|
|Capacity*||40 kVA (Customized)|
|Primary Voltage (VAC)||120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 440V/ 415V/ 460V/ 480V/ 690V...(Customized)|
|Secondary Voltage (VAC)||120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 440V/ 415V/ 460V/ 480V...(Customized)|
|Insulation Resistance||Primary to secondary 2500V>100 megohm;
Primary to safety ground 2500V>100 megohm;
Secondary to safety ground 1500V>100 megohm.
|Frequency||50Hz/ 60Hz||Cooling Method*||Natural or air cooling|
|Efficiency||≥80%~90%||Protective Enclosure*||IP00/ IP20|
|Working Method||Unattended working for a long time.||Temperature Rise||F≤100K, H≤125K|
|Dielectric Strength||3000VAC/min||Operating Temperature||-15℃~+40℃|
|Ground Resistance||25A<80 milliohmΩ||Noise||≤60dB (A) (Within 1 metre)|
|Air Carrying Current||<0.5%~25%||Relative Humidity||≤90%|
|Impedance Voltage*||1%~20%c||Designed Life, Certificate||30 years, CE, ISO|
|Overload Capacity||Two times rated current lasts for 1 minute.||Weight||100Kg|
|Overall Dimension (L*W*H)||440*310*430mm||Installation Dimension (L*W)||300*165mm|
Three Phase Auto Transformer Features & Diagram
The iron core thickness is flexible, 0.27mm, 0.30mm, 0.35m, H18, H14, H12. Brand new and high quality cold-rolled silicon steel sheets are adopted. Other material is also available according to customer requirements.
Features excellent temperature resistance, pressure resistance, flame retardancy, high power and is made of high-quality copper.
Made of nylon with high temperature resistance, great flame retardancy. The high-power and frameless design is adopted and there are ventilation slots between the coils so that the air flows smoothly, which can reduce the temperature of coils quickly and effectively.
Winding material is made of H-class enameled copper or aluminum wires featuring 180°C temperature resistance and arranged tightly and uniformly. The outer surface is not wraped with an insulating layer, which has high heat dissipation.
The whole transformer adopts H-class insulating paint under vacuum pressure, temperature resistance of 180°C, low operation noise and good insulation performance and is anti-rust and anti-corrosion.