Page 199 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

EXERCISE 82 : Connect, Start and Run the Synchronous

Motor

Objectives

At the end of this exercise you shall be able to:
• connect three phase synchronous motor as per diagram
• start the motor as induction motor
• run the motor as synchronous motor.
Requirements

Tools/Instruments Materials
• Electrician Tool kit - 1 Set • ICTP switch 16A 500V - 1 No
• MI Voltmeter 0-500V - 1 No • Lamp holder pendent - 2 Nos
• MIAmmeter0-15A - 1 No • Lamp 250V, 60 or 100 watts bulb - 2 Nos
• MC Ammeter 0 to 2.5A - 1 No • Stranded PVC insulated wire
• MC Ammeter 0 to 15A - 1 No 7/1.5 aluminium cable - 4 m
• MC Voltmeter 0 to 250 volt - 1 No • D.P.S.T. Switch 16A, 250V - 1 No
• Power factor meter 500V 15A 0.5 lag • PVC insulated connecting cable - as reqd
to 0.5 lead - 1 No • ICDP switch 16A 250V - 1 No
• Tachometer multi-range • Graph sheet - as reqd
0-300/1000/3000 rpm - 1 No
Equipment/Machines

• Synchronous motor - 5HP 415V three phase

Procedure

TASK 1 : Connect three phase synchronous motor as per diagram
1 Record the name plate details of the synchronous motor

Manufacturer : .................................... Speed : ....................................rpm
Type : .................................... Insulation Class : .........................................
Serial No. : .................................... Excitation voltage : ........................................
Function : .................................... Excitation Current : ........................................

Type of connection : .................................... Direction of Rotation : .........................................
Voltage : ....................................Volt Rating Class : .........................................
Current : ....................................Amp
Power : ....................................KW Protection : ..........................................

2 Make the connections as shown in circuit diagram. Fig 1

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