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DC Motor Speed Control Trainer Unit ( with 1HP ; 1500 rpm Motor, speed measurement and Loading Arrangement )

SKU: 8539 Category:

SALIENT FEATURES :

DC Motor Speed Control Demonstration Unit is a versatile stand alone unit useful in the study & demonstration of the principle & working of a DC Motor Speed Control. The circuit consists of a ramp generator, comparator, pulse transformer isolated trigger circuit with short circuit, overload protection & field failure protection. The unit can be operated in three modes namely, armature feedback, open loop & tacho feedback. A 3pin socket for CRO is also provided for isolation. It is housed in an elegant metal cabinet with a well spread intelligently designed circuit layout on front panel. Multi – coloured test points are provided at various stages in the circuit to observe voltages & waveforms.

TECHNICAL SPECIFICATIONS:

  • Input : 230V, 50Hz AC 1?.
  • Output : Variable DC ( 0 – 230V ).
  • Circuitry : Ramp generator, Comparator, short circuit, overload protection circuit & pulse transformer isolated trigger circuit.
  • Power Circuit : Using 2 SCR?s ( 1200V, 25A ) ( i.e. Half bridge ).
  • Feedback : 1. Armature.
    2. Tacho.
  • Protection : 1. Overload.
    2. Short circuit
    3. Field failure.
  • Controls : 1. Speed.
    2. Armature – open loop ? Speed measurement feedback selector switch.
  • Indicator : 1. Drive ON.
    2. +12V.
    3. -12V.
    4. Trip.
    5. Mains ON.
  • Socket : 1. 8 pin socket for connecting motor & tacho.
    2. 3 pin socket for CRO.
  • Display : 1. 3 ? digit to indicate armature current.
    2. 3 ? digit to indicate armature voltage.
    3. 3 ? digit to indicate RPM.
  • Motor : 1 HP DC Motor with speed measurement unit & loading arrangement.

Experiment :

1. Study of firing circuit.
2. Speed control of DC motor with armature feedback.
3. Speed control of DC motor with tacho feedback.

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