If the status has been restored within how many minutes of such change, the Generator Operator is not required to notify the Transmission Operator of the status change?

• A. 15 minutes
• B. 60 minutes
• C. 30 minutes
• D. 45 minutes

Answer: (C)

The important idea here is the time-based exception for notifying the Transmission Operator when a generator’s status change is quickly reversed. If the status is restored within 30 minutes of the change, the Generator Operator does not have to notify the Transmission Operator. This threshold is used because a short-lived change that is quickly reversed is less likely to impact real-time reliability coordination, so it keeps communications focused on more prolonged or impactful events.

If the restoration takes longer than that window, the change could affect system operations or topology in a way that the Transmission Operator should be aware of, so notification would be required. The other intervals would imply different rules for when a notification is or isn’t needed, but the 30-minute mark is the specific threshold that stops the notification when the outage is resolved quickly.