Nidec LSA 52.3 - Preventive Maintenance Programme; General Information; Stator; Rotor

Electric Power Generation
Installation and maintenance
5382 en - 2022.11 / h
LSA 52.3 / LSA 53.2 / LSA 54.2
Industrial Range Alternators
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5.1 PREVENTIVE MAINTENANCE PROGRAMME
5.1.0 General information
The purpose of the general preventive maintenance programme below is to assist in establishing the installation-specific
maintenance programme. Suggestions and recommendations should be followed as closely as possible to keep the machine
efficient so as not reduce its service-life.
The maintenance operations are detailed in the chapters dedicated to the topics concerned.
The time required for the operations is indicated for information purposes only.
Hours
Comments
Task duration
Major overhaul 40000 Or 5-7 years depending on on-site conditions 4 weeks
5.1.1 Stator
Hours
Comments
Task duration
Winding temperature 24 Daily operation, (without generator set). Refer to chapter
2.1.3.2
Insulation
8000
(*1) Refer to 5.8
4 hrs
Polarisation index 8000 (*1) Refer to chapter 5.8.2
Bolt tightening 8000 (*1) Refer to chapter 5.6 2 hrs
Winding visual inspection 8000 (*1) Refer to 5.8 1 hr
Stator RTD function 8000 (*1) Refer to 2.1.3.2
Cleaning air inlet and outlet 1000 (*1) Refer to chapter 5.5
(*1): or once a year, whichever comes first
5.1.2 Rotor
Insulation 8000 (*1) Refer to 5.8
0.5 hr
Polarisation index 8000 (*1) Refer to chapter 5.8.2
Winding visual inspection 8000 (*1) Refer to 5.8
Cleaning diodes 8000 (*1) Refer to chapter 5.9
0.5 hr Diodes and varistor check 8000 (*1) Refer to chapter 5.9
Diode tightening 8000 (*1) Refer to chapter 5.6.4
(*1): or once a year, whichever comes first
5.1.3 Terminal box
Cleaning 8000 (*1) 0.5 hr
Regulator assembly & supports 8000 (*1) Applicable if mounted in the terminal box
Bolt tightening
8000
(*1) Refer to chapter 5.6.3
1.5 hrs