Purevolt Products Private Limited
Purevolt Products Private Limited
Okhla Industrial Area, New Delhi, Delhi
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Manual Variable Auto Transformer

Pioneers in the industry, we offer 1 phase manual variable auto transformer and 3 phase manual variable auto transformer from India.

1 Phase Manual Variable Auto Transformer

1 Phase Manual Variable Auto Transformer
  • 1 Phase Manual Variable Auto Transformer
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Approx. Price: Rs 4,000 / PieceGet Latest Price
Single Phase Manual Variable Auto Transformer

Variacs or variable auto transformer is a continuously variable voltage transformer, having a single layer winding on a toroidal core of high grade steel.

In a single phase manually operated auto transformer Variac, portions of the same winding act as both the primary and secondary winding. the winding has at least three taps where electrical connections are made. one end of the winding is usually connected in common to both the voltage source and the electrical load. the other end of the source and load are connected to taps along the winding. Different taps on the winding correspond to different voltages, measured from the common end.

On one face of the copped winding, along the periphery, a special durable contact surface is made. a specially designed carbon brush slides smoothly on the surface. a contact arm holding the contact brush is fitted to the central shaft and as the control knob is rotated, the carbon brush slides over the winding and taps off a portion of voltage across the winding. the basic auto transformer is meant for operation off a nominal voltage of 240 v a.c & can give output voltage anywhere between 0 – 240 v or up to 290 v, by a simple transformer action.

We make these 1 Phase Manual Variable Auto Transformer Variac in below ratings.

Variac Rating Available: 2 Amp to 600 Amp
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3 Phase Manual Variable Auto Transformer

3 Phase Manual Variable Auto Transformer
  • 3 Phase Manual Variable Auto Transformer
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Approx. Price: Rs 10,000 / PieceGet Latest Price

Three Phase Manual Variable Auto Transformer

Variable Auto Transformer Manufactured By Purevolt Is The Most Useful And Effective Device For Step Less, Break Less And Continuous Control Of A.C Voltage And Therefore, For Control Of Various Other Parameters, Dependent On A.C Voltage. also called as dimmerstat they are used for testing purposes.

The Normal Output Range Is 0 To 270 Volt In Single Phase And 0 To 470 Volt In Three Phases. Three Such Variable Auto Transformer When Connected Electrically In Star & Mechanically In Tandem, Became Suitable For Operations Of 415 V 3 Phase A.C. Supply & To Give Output Of 0 – 415 V Or Upto 470 V.

We Are Engaged Into Manufacturing and Supplying of these Three Phase manually operated Variable Auto Transformer with Enclosure or without enclosure. The Normal Input Range Is 415v And the Output Is 0 – 470 V or up to 490 V. We Design And Develop these Three Phase Variable Transformers With Special Features Which Are Appropriate For Educational Institutions, Testing Labs, Etc. And In Oil Cooled Models, We Use Appropriate Radiators Enough To Control The Heat Of The Transformers.

We make these 3 Phase Manual Variable Auto Transformer in below ratings.

Rating Available: 2 Amp to 600 Amp
Single and Three Phase / Air and Oil Cooled
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Sumit Gupta (Managing Director)
D-9/6, Okhla Industrial Area Phase 1
New Delhi- 110020, Delhi, India



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