Auto Variable Transformer (VARIAC)

Variable Auto Transformer, manufactured by ECI is the most useful and effective device for stepless, breakless and continuous control of A.C voltage and therefore, for control of various other parameters, dependent on A.C voltage. It is ideal controlling device for numerous applications in laboratories and in industrial & commercial fields.

Salient Features

• Simple & rugged in construction
• Good Requlation- Voltage drop on load is low
• Output voltage variation on no-load and even on load is effortless, smooth, continous,breakless and linearly proportional to angular rotaion.
• High Effeciency- No load losses and load losses are low.
• Negligible waveform and power factor distortion due to simple transformer action.
• Excellent short time overload capacity
• Easy for remote operation with the help of motor drive.
• Wide range of models.

Technical Specifications

• Rated for 240V A.C. 50/60Hz. single phase supply and three phase model for 415V A.C. 50/60Hz three phase 4 wire supply.
• The output voltage can be varied smoothly over two ranges :
• Zero to full supply voltage
• Zero to approx. 12% higher than the supply voltage
• Suitable for indoor use a maximum ambient temperature of 45oC