Balancing Contingency Event
Any single event described in Subsections (A), (B), or (C) below, or any series of such otherwise single events, with each separated from the next by one minute or less.
A. Sudden loss of generation:
a. Due to
i. unit tripping, or
ii. loss of generator Facility resulting in isolation of the
generator from the Bulk Electric System or from the responsible entity’s System, or iii. sudden unplanned outage of transmission Facility;
b. And, that causes an unexpected change to the responsible entity’s ACE;