Leroy-Somer LSA M49.1 User Manual

Réf. 2592 - 4.33 /a - 05.97
ALTERNATEURS - ALTERNATORS
LSA; LSA M; LSA C; LSA K; LSA T 49.1LSA; LSA M; LSA C; LSA K; LSA T 49.1
A R E P - 6 P A R E P - 6 Pôles - R 44les - R 448
Installation et/and maintenanceInstallation et/and maintenance
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Leroy-Somer LSA M49.1 Specifications

General

Frequency	50/60 Hz
Number of poles	4
Protection	IP23
Alternator Type	Brushless
Insulation Class	H
Phase	3
Engine Type	Diesel

Summary

Installation Procedures

Location and Cooling Requirements

Electrical Connection Checks

Pre-operation checks for safe and correct electrical connections.

Insulation Resistance Testing

Starting Up and Initial Checks

Preliminary Electrical Checks

Ensuring electrical safety and correct connections before startup.

Wiring Diagrams and Terminal Layout

Alternator and AVR Wiring Diagram

Detailed schematic showing connections for the alternator and AVR.

Maintenance and Spare Parts

Bearing Lubrication and Care

Initial Troubleshooting Checks

Initial checks to perform when the alternator malfunctions.

Troubleshooting Apparent Defects

Overheating, Noise, and Vibration Issues

Diagnosing and resolving issues related to overheating, noise, and vibration.

Impact Damage and Smoke Faults

Addressing faults from impact damage, smoke, sparks, or flames.

Voltage Faults and Adjustments

No Load and Low Load Voltage Issues

Diagnosing and resolving issues with voltage at no load or low load.

High Voltage and Voltage Oscillation

Adjusting voltage settings and troubleshooting stability issues.

Voltage Verification and Diode Checks

Voltage Correctness and Diode Testing

Verifying voltage levels and checking rotating rectifier diodes.

Rotating Rectifier Diode Testing Procedure

Voltage Regulator (R 448 LS) Introduction

Regulator Description and Features

Overview of the R 448 LS regulator's components and functions.

Static Test Setup and Procedure

Instructions for connecting and performing static tests on the regulator.

Regulator Settings and LAM Function

Regulator Data and Specifications

Detailed characteristics and data for the R 448 regulator.

Load Acceptance Module (LAM) Explanation

Explanation and function of the Load Acceptance Module.

LAM Functionality Effects

Typical LAM Effects with Turbo Engines

Static Regulator and LAM Tests

Static Regulator Test Procedure

Static LAM Test Procedure

AVR Adjustment Procedures

Voltage, Frequency, Stability Adjustment

Settings for voltage, frequency, and stability using potentiometers.

AVR Adjustment Procedure Steps

Advanced AVR Adjustments

Stability and Frequency Fine-Tuning

Parallel Operation Adjustments

Procedures for synchronizing and adjusting alternators in parallel.

Maximum Excitation Current Adjustment

Excitation Ceiling Adjustment

Internal Protection Verification

Dismantling Procedures

Bearing Dismantling and Replacement

Reassembly Procedures

Bearing Reassembly Steps