TEMPORARY RATINGS. 1) The intent of these procedures is to provide uniform, well-documented methodologies for rating transmission line and terminal equipment. When a Market Participant deems it necessary to meet system events or unusual weather conditions, they may provide sets (Normal, LTE, STE) of temporary ratings for specific facilities as described in ISO New England Operating Procedure No. 19, Transmission Operations (OP19). Such ratings will typically recognize factors such as local ambient temperatures or and equipment preloading and would be available to be invoked by system operators.
