Page 197 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

EXERCISE 81 : Identify different parts of Synchronous

Motor

Objectives

At the end of this exercise you shall be able to:
• read and interpret the name plate details of given shynchronous motor
• identify the parts of synchronous motor.

Requirements

Tools/Instruments Equipment/Machines
• Masonry tools like travel • Synchronous motor 3 KVA,
Spirit level etc. - 1 Set 500V. 3 phase 50Hz with
• Drilling machine electric 12.mm suiTable starter - 1 No.
capacity with drills - 1 No • DC source/rectifier suiTable for
• Measuring tape 3 meters - 1 No above motor - 1 No.
• Electrician hand tool kit - 1 Set • TPIC switch 32A, 500V - 1 No.
• DPIC switch 16A 250V - 1 No.
• SuiTable field Rheostat - 1 No.

Procedure

TASK 1 : Install a given sychronous motor

1 Read the name-plate details and record
Name plate details

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 : ..........................................

TASK 2: Identify the parts of synchronous motor
1 Identify three phase supply input terminals

2 Identify the DC excitation terminals
3 Identify sliprings
4 label parts with number tags.
5 Write the name of the parts of each labelled number in the Table.

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