Leroy-Somer LSA 50.1 User Manual

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LSA 50.1 / LSA 51.2
ALTERNATORS
P3
P4
P5
4
49
48
41
205
193
198
50
203
190
Installation and maintenance
Réf. 3281 en - 10.2007 / g

Leroy-Somer LSA 50.1 Specifications

General

Protection degree	IP23
Insulation class	H
Frequency (Hz)	50 Hz
Number of poles	4
Voltage	400 V
Phase	Three-phase

Summary

2 - TECHNICAL CHARACTERISTICS

2.1 Electrical Characteristics

2.2 Mechanical Characteristics

3 - INSTALLATION

3.1 Assembly, Handling and Coupling

Instructions for assembling, handling, and coupling the alternator with the prime mover.

3.2 Inspection and Checks

3.3 Terminal Connection Diagrams

Diagrams illustrating terminal connection configurations for different voltage and winding options.

4 - SERVICING - MAINTENANCE

4.1 Safety Measures

Essential safety precautions to be observed during servicing and troubleshooting operations.

4.2 Regular Maintenance

4.2.4 Electrical Servicing

4.2.5 Mechanical Servicing

4.3 Fault Detection

Methods for identifying the source of malfunctions when the alternator does not operate normally.

4.4 Mechanical Defects

Common mechanical defects, their potential causes, and troubleshooting steps.

4.5 Electrical Faults

Troubleshooting common electrical faults such as no voltage or incorrect voltage output.

4.5.1 Winding Checks

Procedure for checking the winding insulation using high voltage testing.

4.5.2 Diode Bridge Checks

Steps for checking the functionality of the diode bridge using test assemblies.

4.5.3 Rotating Diodes Checks

Method for checking windings and rotating diodes using separate excitation.

4.6 Dismantling and Reassembly

4.6.5 NDE Bearing Replacement

4.6.6 DE Bearing Replacement

4.7 PMG Installation and Maintenance