low voltage motors

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Page 1: Low Voltage Motors
Page 2: Low Voltage Motors

CONTENTS WHAT IS MOTOR WORKING PRINCIPLE OF MOTOR TYPES OF MOTOR MAIN PARTS OF SQUIRRAL CAGE MOTOR TYPE OF MAINTENANCE OVERHAULING STEPS PURPOSE OF OVERHAULING NATURE OF FAULT PROTECTION SAFETY QUESTION AND ANSWER SECTION

Page 3: Low Voltage Motors

WHAT IS MOTOR & WORKING PRINCIPLE

Page 4: Low Voltage Motors

MAIN PARTS OF MOTORTERMINAL BOX

D/E BEARING N/DE

BEARING

EYE BOLT GREASINGNIPPLE

Page 5: Low Voltage Motors

TYPES OF MOTOR

AC MOTOR DC MOTOR

SINGLE PHASE MOTOR

3 Ø MOTOR

CAPACITOR START MOTOR

CAPACITOR RUN MOTOR

UNIVERSAL SERIES MOTOR

SYNCHRONOUS MOTOR

ASYNCHRONOUS MOTOR

SLIP RING INDUCTION MOTOR

SQUIRAL CAGE INDUCTIONMOTOR

SERIES MOTOR

SHUNT MOTOR

COMPOUND MOTOR

Page 6: Low Voltage Motors

MOTOR NAME PLATE

RATED VOLTAGE 380V RATED POWER 248KW FREQUENCY 50 HZ NR . OF POLES 4 R . P . M 1490 POWER FACTOR 0.88 RATED CURRENT 447 A INULATION CLASS F SERVICE TYPE CS DEGREEOF PROTECTION IP 55 BEARING TYPE NU 222 - 6217-C3

Page 7: Low Voltage Motors

TYPE OF MAINTENANCE

CORRECTIV MAINTENANCE

PREVANTIVE MAINTENANCE

4 YEARLY OVERHAULING

Page 8: Low Voltage Motors

OVER HAULING STEPS SAFETY DOCUMENT ( PERMET) TAKE FIVE DISCONNECTION SHIFTING OVER HAULING , DISMENTLING / REASSEMBLING SHIFTING INSTALATON ALIGMENT RECONNECTION HOUSE KEPING CANCEL SAFETY DOCUMENT UNCOUPLED RUN TEST COUPLED RUN TEST CHECK SHEET

Page 9: Low Voltage Motors

PURPOSE OF OVERHAULING

PREVENTION OF FAILURE, SIGNEFCANT LOOS OF PRODUCTION

ROCORDING INFORMATION OF MOTOR HEALTH

INCREASES RELIABLITY INCREASES AVAIBILATY

Page 10: Low Voltage Motors

OVERHAULING DESMENTLING

N. DRIVE END COVER

DRIVE END COVEROUTER GREAS CUP

Page 11: Low Voltage Motors
Page 12: Low Voltage Motors
Page 13: Low Voltage Motors
Page 14: Low Voltage Motors

BEARING PULL OUT

BEARING PULLER BEARING

Page 15: Low Voltage Motors

MAJOR INSPECTION

STATOR AND STATOR WINDING

ROTOR INSPECTION

HOUSING AND BEARING INSPECTION

TERMINAL BOX AND TERMINAL PLATE

Page 16: Low Voltage Motors

ROTOR INSPECTION

COPPER BAR

END RING

INER COOLING wings

ROTOR COOLING DUCT

Page 17: Low Voltage Motors

STATER & WINDING INSPECTION

STATER INSULATED WINDING

BINDING

INSULATED PAPER

CONNECTIO LEADS

SLOT

Page 18: Low Voltage Motors

BEARING & HOUSING INSPECTION

BEARING HOUSING

Page 19: Low Voltage Motors

BEARING

CAGE

ROLLER BEARING

BALL BEARING

Page 20: Low Voltage Motors

TERMINAL BOX INSPECTIONTERMINAL BOX INSPECTION

GASKETCONNECTION LEAD

TERMINAL PLAT

CABLE GLAND

Page 21: Low Voltage Motors

CLEANING AND WASHING OF MOTOR PARTS

Page 22: Low Voltage Motors

REASSEMBLINGREASSEMBLING

NEW BEARINGNEW BEARING

INNER GREAS CUP

Page 23: Low Voltage Motors

NATURE OF FAULT

BEARING FAILURE ABNORMAL SOUND VIBERATION OVER HEATING OVER LOAD EARTH FAULT / OVER CURRENT WINDING OPEN

Page 24: Low Voltage Motors

PROTECTION

THERMAL OVER LOAD RELAY 49 OVER CURRENT

IM 30 RELAY

51-OVER CURRENT 50 N- EARTH FAULT

Page 25: Low Voltage Motors

SAFETY

SAFETY DOCUMENT ISOLATION MANUAL HANDLIG SKIN INFECTION DURING BEARING HEAT

Page 26: Low Voltage Motors