WEG G Serie Manual De Instalación, Operación Y Mantenimiento página 10

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4.8.1 Electrical connections ....................................................................................................................... 27
4.8.1.1 Main connection ................................................................................................................. 27
4.8.1.2 Grounding .......................................................................................................................... 27
4.8.1.3 Electronic voltage regulator connections............................................................................... 28
4.8.1.4 Terminal identification.......................................................................................................... 28
4.8.2 Connection diagrams ....................................................................................................................... 29
4.8.2.1 Three-phase alternators - 12 terminals ................................................................................. 29
4.8.2.2 Three-phase alternators - 6 terminals ................................................................................... 30
4.8.2.3 Three-phase alternators with single-phase connection - 12 terminals ..................................... 31
4.8.2.4 Electrical connections of the voltage regulator ....................................................................... 31
4.8.3 Accessories connection diagram ....................................................................................................... 32
4.8.3.1 Stator thermostats .............................................................................................................. 32
4.8.3.2 Bearing thermostats............................................................................................................ 32
4.8.3.3 Stator thermoresistances .................................................................................................... 32
4.8.3.4 Bearing thermoresistances .................................................................................................. 32
4.8.3.5 Space heaters .................................................................................................................... 32
4.9 MECHANICAL FEATURES............................................................................................................. 33
4.9.1 Bases and foundations ..................................................................................................................... 33
4.9.2 Alignment and leveling ...................................................................................................................... 33
4.9.2.1 Alternators with double bearing (B35T or B3T) ...................................................................... 33
4.9.2.2 Alternators with single bearing (B15T) ................................................................................... 33
4.9.2.3 Rotor turning ...................................................................................................................... 34
4.9.3 Coupling.......................................................................................................................................... 34
4.9.3.1 Alternators with double bearing (B35T / B3T) ........................................................................ 34
4.9.3.2 Alternator with single bearing (B15T) .................................................................................... 34
4.10 GENERAL NOTE OF INSTALLATION .............................................................................................. 35
5 COMMISSIONING ................................................................................................. 36
5.1 PRELIMINARY TEST ..................................................................................................................... 36
5.2 INITIAL SPIN ................................................................................................................................. 36
5.3 OPERATION ................................................................................................................................. 36
5.4 TRIMPOTS ADJUSTMENT ............................................................................................................ 36
5.5 SHUTDOWN................................................................................................................................. 37
5.6 ALTERNATORS IN PARALLEL ....................................................................................................... 37
5.6.1 With each other and / or with the electrical grid .................................................................................. 37
6 MAINTENANCE ..................................................................................................... 38
6.1 EMERGENCY GENSETS ............................................................................................................... 38
6.2 CLEANING ................................................................................................................................... 38
6.3 NOISE .......................................................................................................................................... 38
6.4 VIBRATION ................................................................................................................................... 38
6.5 BEARINGS ................................................................................................................................... 38
6.5.1 Lubrication ...................................................................................................................................... 38
6.5.1.1 Type and amount of grease ................................................................................................. 38
6.5.1.2 Instructions for lubrication ................................................................................................... 39
6.5.1.3 Procedures for relubrication of bearings ............................................................................... 39
6.5.2 Bearings replacement ....................................................................................................................... 39
6.5.2.1 Alternator with single bearing - B15T .................................................................................... 39
6.5.2.2 Alternator with double bearing - B35T .................................................................................. 39
6.5.2.3 Bearing withdraw ................................................................................................................ 40
6.6 MAINTENANCE OF THE EXCITER ................................................................................................. 40
6.6.1 Exciter ............................................................................................................................................. 40
6.6.2 Test on the diodes ........................................................................................................................... 40
6.6.3 Diodes replacement ......................................................................................................................... 40
6.6.4 Test on varistor ................................................................................................................................ 41
6.6.5 Replacement of the varistor .............................................................................................................. 41
6.6.6 Test on the capacitor........................................................................................................................ 41
6.6.7 Replacement of the capacitor ........................................................................................................... 41
6.7 AIR FLOW..................................................................................................................................... 41
6.8 COMPLETE INSPECTION ............................................................................................................. 41
10 l Installation, operation and maintenance manual - Synchronous Alternator - G line - Horizontal
4.8.1.1.1 Cables connection .............................................................................................. 27
4.9.3.1.1 Direct coupling ................................................................................................... 34
4.9.3.1.2 Coupling by pulleys and belts .............................................................................. 34
4.9.3.2.1 Measure "G" ...................................................................................................... 34
4.9.3.2.2 Change of measure G ......................................................................................... 35
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