NON-CONFIDENTIAL 1 Response IR-1: (cont'd) 2 3 The database of relays contains all mechanical relays in the system. A number of those 4 relays are no longer in service because they have been replaced with newer digital relays, 5 or parts o...
AI summary The response discusses the database of relays in NSPI's system, noting that many mechanical relays have been replaced by digital ones or removed due to system retirements and upgrades for renewable energy integration. Testing of relays is conducted according to a 3-year program and NPCC requirements, with one relay not tested due to the significant impact of its removal.