testing of various numerical and electromagnetic relays installed in unit 11 ph-4 and 400kv sarni ashta-i or ii feeders stps sarni during aoh or short shutdown.- 1 work part 2 ge numerical multilin 650 3 micom p345 generator protection 4 micom p633 differential/ref protection 87/64rgt 5 micom p634 overall differential protection 87oa 6 micom p127 gen. backup e/f protection, incomer to 415v mcc & bus couplers 7 micom p122 415v incomer boiler acdb 8 micom p211 415v outgoing motor feeders 9 micom p111 outgoing feeders 10 micom 921/922 bus under voltage relays 11 distance protection relay (main-i)micom-p444 12 distance protection relay (main-i)micom-p443/442 13 transformer protection relay micom p-642 14 feeder protection relay micom p-141 15 3 phase over current relay (inverse) type cdg 16 2 over current + 1earthfault relay type cdg 31 17 instantaneous under voltage relay type 27yb, vagm 18 fuse failure relay ,vapm 19 86lockout relays vajh 23/pq8nch2js/mvaj203 20 aux relay vaa 21 trip ann relay 22 earth fault relay type cdg 23 timer relay (definite time relay), 24 anti pumping relay 25 trip ckt supervision relay 26 breaker contact multiplier relay vajc11 27 check synch relay ske 28 tripping relay 29 under voltage relay vajg 30 over frequency relay 31 neutral displacement relay 32 pt fuse failure relay