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7 Yrs
C- 13, Radhu Palace Road, Laxmi Nagar
New Delhi, Delhi-110092, India+(91)-11-42448381
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Variable Auto Transformer

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We offer a wide range of high quality Variable Auto Transformer (Variac). This type of transformers are AC voltage controls that provide a variable AC voltage. Their distortion free output is ideal for sensitive electronic applications. These transformers have a single layer winding on a toroidal core of high-grade cold rolled grain oriented (CRGO) steel. On one face of the copper winding along the periphery, a special durable contact surface is made and a specially finished carbon brush slide smoothly on the surface. A contact arm holding the carbon brush fitted on the centre shaft and as the control knob is rotated the carbon brush slides over the winding and taps of a portion of voltage across the winding. Variac transformers can boost the output voltage in excess of twice the input voltage. Any desire voltage with in the Maximum range can be obtained by adjusting the position of the Brush. The calibrated dial show approximately output voltage at no load, when the input is at its rated value. Rotation of the arm by manual or motor drive delivers an output voltage from 0 to above line voltage, High voltage Transformer, Constant Voltage Transformer, Air Cooled Transformer, we also offer High voltage Transformer, Constant Voltage Transformer, Air Cooled Transformer.
Application Areas

  • Auditorium, hotels, conference hall, laboratories et
  • College & universities
  • Servo stabilizer, rectifiers, battery charger
  • Testing instruments
  • Welding equipments

  • Simple rugged construction
  • 99.9% pure copper
  • High Efficiency
  • Negligible wave form & power factor distortion
  • Coils made from high grade CRGO steel
  • Low temperature rise
  • Long life with negligible maintenance
  • High quality carbon brush used for current flow
  • Smooth & stepless voltage control
  • Short time overload capacity
  • Simple Installation & Connection
  • Spare carbon brushes provided up to 28 Amp
  • Wide range of current rating 4 Amp. To 1200 Amp.


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