Reparación De Motores Electricos

Recognized as an
American National
Standard (ANSI)
ANSI/EASA
AR100-2006

E ASA Standard AR100-2006
EASA

RECOMMENDED
PRACTICE

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EASA AR100-2006 Recommended Practice - Rev. May 2006

EASA AR100-2006RECOMMENDED
PRACTICE
FOR THE REPAIR OF ROTATING
ELECTRICAL APPARATUS

1

EASA AR100-2006 Recommended Practice - Rev. May 2006

Electrical Apparatus Service Association, Inc.
1331 Baur Blvd. • St. Louis, MO 63132 USA
314-993-2220 • Fax: 314-993-1269
www.easa.com • easainfo@easa.com
Copyright © 2006. All rights reserved.

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EASA AR100-2006 Recommended Practice - Rev. May 2006Table of Contents, Page 1

TABLE OF CONTENTS
SECTION 1: GENERAL
1.1
1.2
1.3

PURPOSE
SCOPE
IDENTIFICATION
1.3.1 Service Center Labeling
1.3.2 Records
1.3.3 Nameplate
1.4 CLEANING
1.5 TERMINAL LEADS
1.6 TERMINAL CONNECTORS
1.7 TERMINAL BOXES
1.8 COOLING SYSTEM
1.9 EXTERIOR FINISH
1.10 PACKAGING AND TRANSPORTATION

SECTION 2: MECHANICAL REPAIR
2.1

2.2

2.3

2.42.5
2.6
2.7
2.8

2.9
2.10
2.11
2.12
2.13

SHAFTS
2.1.1 Shaft Extensions
2.1.1.1 Diameter Tolerances
2.1.1.2 Permissible Runout
2.1.1.3 Keyseat (Keyway) Width
Tolerances
BEARINGS
2.2.1 Ball or Roller Bearings
2.2.2 Sleeve Bearings
2.2.2.1 Sleeve Bearing End-Thrust
2.2.2.2 Oil Rings
2.2.2.3 Seals
LUBRICATION
2.3.1 Grease
2.3.2 Oil
FRAME AND BEARING HOUSINGS
2.4.1 General2.4.2 Mounting Surface Tolerances,
Eccentricity and Face Runout
LAMINATIONS
BALANCING
SLIP RINGS
COMMUTATORS
2.8.1 Machining
2.8.2 Undercutting
BRUSHHOLDERS
BRUSHES
BRUSH SETTING FOR DC MACHINES
AIR GAP MEASUREMENT OF DC
MACHINES
ACCESSORIES

TABLES
2-1 Shaft Extension Diameter Tolerances—
NEMA Frame Size Machines
2-2 Shaft Extension Diameter Tolerances—IEC
Frame Size Machines2-3 Permissible Shaft Extension Runout—NEMA
Frame Size Machines
2-4 Permissible Shaft Extension Runout—IEC
Frame Size Machines
2-5 Shaft Extension Keyseat Width Tolerances—
NEMA Frame Size Machines
2-6 Shaft Extension Keyseat (Keyway) Width
Tolerances—IEC Frame Size Machines
2-7 Labyrinth Seal Diametral Clearance Guide
2-8 Mounting Surface Tolerances, Eccentricity,
and Face Runout—NEMAType C FaceMounting Motors and Type D Flange-Mounting Motors
2-9 Mounting Surface Tolerances, Eccentricity,
and Face Runout—NEMA Type P FlangeMounting Motors
2-10 Mounting Rabbet (Spigot) Diameter Tolerances—IEC Flange-Mounted Machines
2-11 Mounting Surface Eccentricity and Face
Runout—IEC Flange-Mounted Machines
2-12 Brush-to-Brushholder Clearance
2-13 Radial Ball Bearing Fit Tolerances2-14 Cylindrical Roller Bearing Fit Tolerances

SECTION 3: REWINDING
3.1

3.2
3.3
3.4
3.5
3.6

3.7

3.8
3.9

INSPECTION
3.1.1 Windings
3.1.2 Core Laminations
3.1.3 Thermal Protectors or Sensors
REWINDING SPECIFICATION
STRIPPING OF WINDINGS
INSULATION SYSTEM
CONDUCTORS
STATOR, ROTOR, AND ARMATURE
COILS
3.6.1 Random-Wound Coils
3.6.2 Form-Wound Coils
FIELD COILS
3.7.1Stationary Coils
3.7.2 Rotating Coils
AMORTISSEUR AND SQUIRREL CAGE
WINDINGS
THERMAL PROTECTORS OR SENSORS

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Table of Contents, Page 2

3.10 SHAPING AND LACING OF STATOR
WINDINGS
3.11 COIL CONNECTIONS
3.11.1 Making Connections
3.11.2 Insulating Connections
3.12 WEDGES
3.13 BANDING OF ROTORS AND
ARMATURES
3.14 IMPREGNATION OF WINDINGS

SECTION 4: TESTING
4.1
4.2

4.34.4

4.5

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SAFETY CONSIDERATIONS
INSULATION CONDITION TESTS
4.2.1 Inspection
4.2.2 Insulation Resistance Test
4.2.3 Polarization Index (P-I) Test
4.2.4 Insulation Power Factor Tests
4.2.5 Step Voltage Test
4.2.6 Turn-to-Turn Test
4.2.7 Surge Comparison Testing
4.2.8 Interlaminar Insulation Test
4.2.9 Bearing Insulation Test
RECOMMENDED WINDING TESTS
4.3.1 Stator and...