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Dc tachogenerators With Rare Earth Magnet

Features

  • Simple disassembly without voltage loss
  • Compact & light weight construction
  • High linearity better than 0.15%
  • Low Ripple (Less than 0.6%)
  • Temp. draft error-0.03%/oC
  • Grade of protection-IP44
  • Temp. compensation on request

Application

  • Ideal choice for prices speed control for textile/steel/cement industries & passenger lifts

Construction

  • These precision tachogenerators incorporate the following special constructional features to retain high accuracy and extreme reliability even under arduous duty in aggressive environment.
  • High energy magnets used for maximum field s trength, high coercivity and minimum linearity error due to temperature drift.
  • S.G. Iron Housing duty heat treated and precision machined.
  • Shift made from alloy steel duty heat treated, machined and precision ground to achieve optimum strength, rigidity and accuracy.
  • Prelubricated and sealed precision ball bearings used for long maintenance free life.
  • Silver graphite brushes used to minimize voltage drop at varying loads & speeds.
  • Brush holders precision machined to ensure smooth movement of brushes.
  • Optimum brush pressure maintained by specially designed spring.
  • Temperature compensation on request to ensure extreme accuracy even with wide fluctuation in Ambient Temperature.
  • Commutator built with Silver bearing hard drawn copper segments moulded and machined to close tolerances to achieve sparkles commutation and minimum wear. Use of mica insulation between segments ensures maximum dielectric strength and stability.
  • Monel metal commutator provided on request
  • Armature built with special silicon steel stampings and wound with polyester grade class "F" enameled Cu wire and trickle impregnated for high electrical and mechanical strength. Leads hot staked to commutator segments for excellent electrical contact and mechanical bonding. The Armature dynamically balanced to ensure vibration free rotation, sparkles commutation and low ripple content.
  • Teflon coated silver plated copper sire leads used for connection between brushes and terminal board.