Specifications

3
INSTALLATION AND MAINTENANCE
LSA 50.1 / LSA 51.2
ALTERNATORS
Réf. 3281 en - 10.2007 / g
LEROY-SOMER
CONTENTS
1 - RECEIPT .............................................................. 4
Standards and safety measures
Inspection
Identification
Storage
2 - TECHNICAL CHARACTERISTICS ..................... 5
Electrical characteristics
Options
Mechanical characteristics
Options
3 - INSTALLATION .................................................. 6
Assembly
Handling
Coupling
Location
Inspection prior to first use
Electrical checks
Mechanical checks
Terminal connection diagrams
Terminal connection
Connection checks
Electrical checks on the AVR
Commissioning
Settings
R 449 settings
Max. excitation setting
Special type of use
4 - SERVICING - MAINTENANCE ......................... 8
Safety measures
Regular maintenance
Checks after start-up
Cooling circuit
Bearings
Electrical servicing
Mechanical servicing
Fault detection
Mechanical defects
Electrical faults
Checking the winding
Checking the diode bridge
Checking the windings and rotating diodes
using separate excitation
Dismantling, reassembly
Tools required
Screw tightening torque
Access to diodes
Access to connections and the regulation system
Replacing the NDE bearing on
single-bearing machines
Replacing the DE bearing on
two-bearing machines
Complete dismantling
Reassembling the bearings
Reassembling the rotor
Installation and maintenance of the PMG
Mechanical characteristics and assembly
Electrical connection
Table of electrical characteristics
5 - SPARE PARTS ................................................... 14
First maintenance parts
Technical support service
Exploded views, parts list
Parts list
Exploded view : single-bearing
Exploded view : two-bearing
DE bearing assembly
NDE bearing assembly
PMG assembly