Saturday 20 April 2013

CVT(Constant Voltage Transformer), Key Features, Specification, Recommendations


KEY FEATURES

  • High reliability as no semiconductors/moving parts used.
  • Provide relatively sine wave output irrespective of quality of input wave shape.
  • High insulation values.
  • Instantaneous voltage regulation.
  • Output highly isolated from mains for suppression of transients & spikes.
  • Short-term over LOAD capacity.
  • Intrinsic current limiting & short circuit protection.
  • Higher input voltage control range for LOADS less than rated load.
Details Are Here: CVT(Constant Voltage Transformer)

SPECIFICATION

  • Input Voltage    180-260, at rated load
  • Output Voltage 220/230V+/-1%
  • Frequency          50Hz+/-1%
  • Response Time 30 milliseconds
  • Efficiency             90% (app) under full load condition
  • Output wave form          Sinusoidal
  • Wave form distortion     less than 4% under full load condition.
  • Load Power Factor          0.75% lag to 0.9% lead
  • Ambient Temp.                -5 to 50 c
  • Effect of line frequency                1.5% (app) change in output voltage for  every in line frequency



RECOMMENDATIONS

  • Place the CVT away from equipment and all magnetic display and storage devices like diskettes, monitors, tapes etc.
  • It is safer to connect CVT to mains supply through a 3 Pin socket ensuring thereby the availability of proper ‘Earth’ connection.
  • Switch ON the CVT first then the attached peripherals and while switching OFF, switch OFF attached peripherals first and then the CVT.
  • In case of supply from a generator, check frequency, CVT is not be used if frequency variation is beyond 50 +/-1Hz.
  • Switch OFF the CVT when not in use.
  • Not to be used for high inductive LOADS like motors.


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