Variable Auto Transformer (Variac)

Variable Auto Transformer (Variac)

V&T Enterprises offers high-quality Variable Auto Transformers (Variac) designed to provide smooth and continuous AC voltage control. These transformers deliver distortion-free output, making them suitable for sensitive electrical and electronic equipment used in both residential and industrial applications.

Manufactured using advanced technology and precision engineering, our variacs ensure linear AC voltage regulation with negligible waveform distortion. They are widely used for controlling current, light intensity, heat, and motor speed with accurate voltage adjustment.

Construction:

  • Single layer winding on toroidal core made of high-grade CRGO steel
  • Contact arm fitted with a carbon brush on the center shaft
  • Special durable contact surface provided on the copper winding
  • Carbon brush moves smoothly over the winding surface
  • Voltage is adjusted by rotating the control knob

Features:

  • Provides smooth and stepless voltage control
  • Can increase output voltage beyond twice the input voltage
  • Low temperature rise during operation
  • Any desired voltage can be obtained within the range
  • Wide current rating from 4 Amp to 1200 Amp
  • Calibrated dial indicates approximate no-load output voltage
  • Spare carbon brushes provided up to 28 Amp
  • Contact arm can be operated manually or by motor
  • Made with high-quality carbon brush and 99.9% pure copper
  • Short-time overload capacity
  • Low maintenance cost

Applications:

  • Auditoriums, hotels, and conference halls
  • Laboratories and testing instruments
  • Servo stabilizers, rectifiers, and battery chargers
  • Colleges and universities
  • Welding equipment
  • Industrial control and automation systems

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