How to check fault record in abb relay

[@MangalManjhi-p6l]

Great sir, all my doubt got cleared

[@prabhatsingh5377]

Now voice clear 👍

[@pcmclassesbydevthakur7560]

Nice

[@ervijay668]

Sir COS ( carier out of sevice ) kese dekhe pls explain it

[@prabhatsingh5377]

In numerical relay what is the meaning of trigger L/H and trigger H/L and no trigger ?

[@powersystemhub2811]

L/H means when voltage is high or ur any input is from 0 to 1 on relay then ur DR will trig. H/L is just opposite I.e. 1-0