IEC 60050-692:2017 gives the terminology used when considering the dependability and quality of service of electric power systems. The concepts are categorized according to the following sections:
- system concepts,
- operating states of electric power systems,
- failures in electric power systems,
- outages of electric power systems equipment,
- outage occurrences in electric power systems,
- state durations and availability related concepts,
- interruptions in electric power systems,
- selected customer interruption measures,
- bulk electric power system load/energy curtailments,
- bulk electric system failures and measures,
- supply performance measures.
This terminology is consistent with the terminology developed in the other specialized parts of the IEV.
It has the status of a horizontal standard in accordance with IEC Guide 108.