Critical Clearing Time

CCT. The maximum permissible duration of the fault.

Definition in an Article by a Joint Task Force of IEEE and CIGRE

Source: ¹

The maximum permissible duration of the fault for which the subsequent system response remains stable. This portion of stability analysis requires the knowledge of actions of protective relaying.

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Last modified: 2025-06-20

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1. P. Kundur and others (2004). Definition and classification of power system stability IEEE/CIGRE joint task force on stability terms and definitions. https://doi.org/10.1109/TPWRS.2004.825981 ↩