Nice presentation. At around 13 mins.,you mentioned CT ratio 1:1. This was confusing a bit because if CT ratio is 1:1, we cant run 10A through it. I know you used it to explain the concept. All good, thanks.
Excellent Presentation and many thanks for sharing it !!! If you can make practical video tutorial on same topic by actually taking up a real substation drawing correlating it with control schematics and showing how actually the entire thing works then it would be great enhancement to this tutorial.
09:56 fault agar line ya feeder mei hai ( bus bar ka apna fault nahi hai) toh Differential current mei koi change nahi aaega. But stabilization current hamesha Raheja kyuki wo sab feeder current ke magnitude ka sum hai