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DC Drive Trainer

SKU: 8544 Category:

SALIENT FEATURES :

DC Drive Demonstrator is a versatile standalone unit useful in the study & demonstration of the principle & working of a DC drive. The circuit consists of a ramp generator, comparator, pulse transformer trigger circuit, dynamic breaking resistor, contactor, short circuit, overload & field failure protection. The unit can be operated in five modes, namely, Forward, Reverse armature feedback, open loop, tacho feedback. A 3 pin 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. Multicoloured 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, Pulse transformer trigger circuit, Dynamic breaking resistor, Contactor, Short circuit, Overload, & Field failure protection.
  • Power Circuit : Using 2 SCR?s ( 1200V, 25A ) ( i.e. Half bridge ).
  • Feedback : 1. Armature.
    2. Speed Measurement
  • Protection : 1. Overload.
    2. Short Circuit.
    3. Field Failure.
  • Controls : 1. Speed.
    2. Direction ( Forward / Reverse ) selector switch.
    3. Feedback ( Armature – open loop – Speed Measurement ) selector switch.
  • Indicator : 1. Drive ON.
    2. +12V.
    3. -12V.
    4. Trip.
    5. Mains ON.
  • Socket : 1. 8 pin socket for connecting motor & Speed Measurement
    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 & loading arrangement.

Experiment :

1. Study of firing circuit.
2. Speed control of DC motor with armature feedback.
3. Speed control of DC motor with Speed Measurement.
4. Forward reverse operation with dynamic breaking.

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