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Variable Auto Transformer buy in Mumbai
Buy Variable Auto Transformer
Variable Auto Transformer

Variable Auto Transformer

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Technical characteristics
  • BrandVoltamp
  • Country of manufactureIndia
Description

Variable Auto Transformer (VARIVOLT) AUTO TRANSFORMER is a continuously variable voltage auto transformer, having a movable carbon tip, fixed to brush arm sliding on a silver plated commutator. Rotation of the brush arm by either manual or motor drive, Auto Trelivers an output voltage from zero to or above line voltage. "VARIVOLT"conforms to I.S. 5142.


Salient Features :

  • Rugged Construction : "VARIVOLT" Auto transformers are designed for heavy duty trouble free operation. All components are designed to give maximum life to the unit under extreme operating conditions. Except for carbon tips, no other part needs any specific maintenance. Even carbon tips do not require to be changed frequently. This practically makes the "VARIVOLT" a maintenance free electrical equipment.
  • Excellent Regulation : The drop in voltage from "no load to full load" is minimal in "VARIVOLT" Auto-transformers. (See fig...II for regulation characteristics)
  • High Efficiency : Careful copper, core selection and design assures the user of low watt loss, as compared to other controllers.
  • No Wave form Distortion : "VARIVOLT" provides an output voltage wave-form, which is a distortionless replica of the input voltage wave-form.
  • Silver Plated Commutator : A special silver plating technique is used on the commutator, enabling it to withstand high overloads and maintain constant contact drop. It also ensures smooth operation, long life and increased resistance to corrosion.
  • Over-load Capacity : Because of its careful designing, "VARIVOLT" can withstand many over-loads, Fig. 1 gives an idea of the maximum overloading allowed with its relevant time limits. When repeated overloading takes place, care has to be exercised to provide sufficient off time to reduce the temperature build up.
  • Low Operating Torque: A glass smooth commutator, special sintered bushings for the shaft and perfect assembling of coils results in low operating torque for all "VARIVOLT" Auto-transformers.
  • Smooth and Linear Output: As voltage between turns is small and as the brush arms is in constant contact with more than one turn, harmful sparking avoided and output voltage can be set to a fraction of a volt from zero onwards.
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Variable Auto Transformer
Variable Auto Transformer
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