1907
UnclassifiedElectrical
What This Code Means
Prolonged Undervoltage; Generator voltage below 80% of nominal for 10+ seconds.; Both Zero Crosses missing Undervoltage; Controller measuring no voltage resulting in undervoltage; Generator voltage less than 120V when undervoltage set; No field current during undervoltage alarm; Generator running underspeed for > 30 seconds when under - voltage alarm set; Single Zero Cross missing Undervoltage; After resuming from a load shed event, still undervoltage because of overload condition.; Generator Xfer Enabled Output has been mis - wired.; Incorrect DC AC wiring hook up.
Possible Causes
- •Brushless Alternator Problem 5 – Generator Shuts Down for Under Voltage page 57
- •Brushed Alternator Problem 1 – Generator Shuts Down for Under Voltage page 53
- •Faulty excitation winding
- •Zero cross circuit failure
- •Circuit in general failure
- •Loose wiring
- •Field boost hardware failure
- •Loose connections
- •Broken wire
- •Wire loose
- •Brush failure
- •Fuel supply/control system issues
- •Engine intake exhaust or mechanical issues
- •Overload condition
- •Miswiring
Suggested Actions
- 1Verify wiring on Wire 194 and Wire 23.
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