Definition
A Transmission Line Rating defined in Attachment M that reflects operation for a specified, finite period rather than continuous operation. Emergency Ratings may assume an acceptable loss of equipment life or other temporary physical limitations for the equipment involved. Transmission Providers must use uniquely determined Emergency Ratings — including separate Ambient-Adjusted Rating calculations for each Emergency Rating duration — in contingency analysis and post-contingency simulations of constraints, allowing operators to safely utilize short-term overload capacity during system disturbances.
Topic Deck
Grid Operations
Source
FERC Pro Forma OATT / LGIP
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