Electrical Machines Lab

     The laboratory has D.C. Motors and Generators, 3 Ph. Induction Motors, (Squirrel cage and slipring type), 3 Ph. Synchronous machines , Single phase & 3 Ph. Transformers, 1 Ph. Induction Motors (Various types), Cut sections of actual machines like , D.C. motors, Generators, A.C. motors and Generators, associated with well designed panels and informative displays. The Machines laboratory is supported with Large capacity three phase A.C. to D.C. rectifier unit to supply D.C. power. The machines laboratory is well equipped with all kinds of measuring instruments.

Specifications of Equipments

EQUIPMENT NAME

SPECIFICATION

DC motor-DCGenerator

3hp,2.2kW,220V,10amps,1500rpm(04)

Transformers

1KVA,1-phase,50Hz,230/230v

DC Generator-DC Motor Sets

5hp,220v,19A,1500rpm 3kw,13.6A(02)

DC Motor with brake Drum

5hp,220v,19A,1500rpm

Induction Motor-DC Generator Sets(2)

5hp,415v,3-phase, 1440rpm, 2kW,220V,9A 1500rpm,Field1.1A

AC Generator-DC Generator Set(2)

3kVA,440V,3-Phase, 0.8pf, 4.0A,1500rpm-5hp,220V,19.2A,1500rpm

Induction Motor

3-Phase, 5hp,415V,7.5A,1440rpm

3-Phase Slipring Induction Motor

5hp,400V,8A,0.8pf,1480rpm

1-Phase Induction Motor

1hp,230V,50Hzs,7.2A,1410rpm Capacitor Start

 M/Cs 1

M/Cs 2

Exercises Conducted:

  • Determination of Efficiency & Regulation of Transformer
  • Sumpner's Test
  • Poly Phase Connection & Scott Connection using 1_phase Transformer
  • Load test on 3-Phase Induction Motor
  • Performance determination- circle diagram of Induction motor
  • Load test on 1-phase Induction Motor
  • Study 3-phase Induction motor starter
  • Performance Ch. of 3-Phase Induction Generator
  • Load test on DC shunt Motor
  • Hopkinson's Test
  • Speed Control of DC shunt Motor
  • Ward-Leonard Speed control
  • Swinburne's Test
  • Field & Load test on DC series motor
  • Synchronisation of alternator
  • V and inverted V curves of synchronous motor
  • Perfarmance of Synchronous motor connected to infinite BUS