What can happen if generator startup surges are not managed?

• A. Voltage sags that can cause regulator misoperation and nuisance trips
• B. Increased fuel consumption
• C. Improved voltage stability
• D. Faster engine start

Answer: (A)

Startup surges in the generator system cause transient voltage dips on the output. If these surges aren’t controlled, the bus voltage can sag enough to push the automatic voltage regulator out of its normal range, which can lead to misoperation of regulation and nuisance trips by protective devices. In short, unmanaged surge events destabilize the voltage and can trigger unwanted trips, rather than improving stability or speeding engine starts. The other outcomes don’t reflect the actual effect of a sudden, large inrush on the electrical system.