ELBOW 1159226 - Caterpillar

Excitation System
Table 5
Maintenance object L1 L2 L3 L4 Check / Test
Exciter diode bridge V V / T / C V / T / C V / T / C Cleanliness, operation
Exciter semiconductors V V / T / C V / T / C V / T / C Operation, fixing
Exciter connections V V / T / C V / T / C V / T / C Fixing, general condition
Exciter winding insulation V V / T V / T V / T Wear, cleanliness, insulation resistance
Exciter air gap V V / T V / T / D V / T / D Cleanliness, equality
Automatic Voltage Regulator (AVR) V V / T V / T V / T Operation, settings, stability test
Current transformer for parallel operation V V V / T V / T Operation, cleanliness
Temperature detectors V V / T V / T V / T Operation, resistance
Anti-condensation heaters V V / T V / T V / T Operation, insulation resistance
Auxiliary terminals V V / T V / T V / T General condition, terminals, wiring condition
Exciter stator fixing V V V V General condition, cracks Bearings
Table 6
Maintenance object L1 L2 L3 L4 Check / Test
Bearing assembly V V / T V / T V / T General condition
Re-lubricated bearing R R R R Re-greasing
Closed bearing (no re-lubrication) V V V / R R Condition, change bearing Cooling System - Open Air
Table 7
Maintenance object L1 L2 L3 L4 Check / Test
Fans V V V V Operation, general condition, cracks
Air intake V V / C V / C V / C Cleanliness, operation
Air outlet V V / C V / C V / C Cleanliness, operation