Electric Power Generation
Installation and maintenance
LSA 52.3 / LSA 53.2 / LSA 54.2
Industrial Range Alternators
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3
4.3.1 Machine stopped checks 16
4.3.2. Machine running checks 16
4.3.2.0 Rotor speed ramp-up (Standard Machine)
16
4.3.2.1 Checks of machine running without
excitation 16
4.3.2.2 Checks of excited machine running with no
load 16
4.3.2.3 Generator and site safety parameter 16
4.3.2.4 Checks of machine running under full load
checks 16
4.3.3 Generator start-up checklist 17
5. MAINTENANCE AND SERVICING 19
5.0 GENERAL INFORMATION 19
5.1 PREVENTIVE MAINTENANCE
PROGRAMME 20
5.1.0 General information 20
5.1.1 Stator 20
5.1.2 Rotor 20
5.1.3 Terminal box 20
5.1.4 Roller bearing 21
5.1.5 Rubber dampers 21
5.1.6 Filters 21
5.1.7 Protection devices 21
5.2 AIR GAP CHECK 22
5.2.1 General information 22
5.2.2 Double-bearing machine 22
5.3 BEARINGS 22
5.3.1 General information 22
5.3.2 Cleaning of old bearing grease 22
5.3.3 Cleaning of the bearing assembly area 23
5.3.4 Bearing disassembly 23
5.3.5 Bearing reassembly 23
5.4 LUBRICANTS 24
5.4.1 Greases 24
5.5 AIR FILTER 24
5.5.1 Cleaning 24
5.5.1.1 Air Filter Cleaning Frequency 24
5.5.1.2 Air filter cleaning procedure 24
5.6 SCREW TIGHTENING 24
5.6.0 General information 24
5.6.1 Steel screws in steel tapping 25
5.6.2 Plugs 25
5.6.3 Electrical contact 25
5.6.4 Rotating diodes 25
5.6.5 Synthetic parts 25
5.7 ELECTRICAL MEASURING
INSTRUMENTS 25
5.7.1 Instruments used 25
5.8 INSULATION CHECK OF WINDINGS 25
5.8.0 General information 25
5.8.1 Insulation measurement 26
5.8.2 Polarisation Index 26
5.9 ROTARY DIODE BRIDGE TEST 27
5.10 COIL CLEANING 27
5.10.0 General information 27
5.10.1 Coil cleaning products 27
5.10.2 Cleaning Operation 27
5.11 WINDING DRYING 28
5.11.0 General information 28
5.11.1 Drying Method 28
5.11.1.1 General information 28
5.11.1.2 Drying generator in a stopped position 28
5.11.1.3 Drying generator in rotation 28
5.12 NEW VARNISH APPLICATION 29
5.13 TERMINAL BOX 29
5.14 SPARE PARTS 29
5.15 MECHANICAL DEFECTS 30
5.16 ELECTRICAL FAULTS 31
6. TYPICAL ASSEMBLIES AND DRAWINGS
32
6.1 MACHINE SECTION VIEWS 32
6.1.1 Machine type A52.3 32
6.1.2 Machine type A53; A54 34
6.2 ROLLER BEARING MOUNTING 35
6.2.1 Machines A52, A53 and A54; standard 35
7. STANDARD SAFETY REGULATIONS 36
7.1 EUROPEAN REGULATIONS AND
DIRECTIVES 36
7.1.1 Low Voltage Machines 36
7.1.2 Medium and High Voltage Machines 37
7.1.3 Short circuit capacity of the terminal box 38
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