Great video... Very helpful... May I know if you have video regarding reverse power relay and differential relays?... How the ratings of these relays are calculated?
If psm is more than 20 should we consider it as 20.....if so is it applicable in both IEC and IEEE/ANSI equations..... Also can we use both IEC /ANSI curves in same plot for coordination of relays in same power network...
Sir,as the fault current is inversely proportional with time,but we select the time settings before only then how does the characteristics effect or which type of characteristics we use? Also sir,in today's numerical relays, can we select different characteristics for a single relay?