00568oam 2200181z- 450 9962800950033161-5044-4682-8(CKB)4100000006937967(EXLCZ)99410000000693796720190811c2018uuuu -u- -engIEEE/IEC P60255-118-1/D8, January 2018IEEEP60255-118-1/D8, Jan 2018 - IEEE/IEC Approved Draft International Standard - Measuring relays and protection equipment - Part 118-1DOCUMENT996280095003316IEEE878179UNISA