What is the significance of Protected Unit Scaling Factor in relay setting calculation?
For Relay setting of any protected unit like HT Motor, it required FLC, CT Primary and secondary and Relay input current. In almost cases,FLC and CT Primary current never matched.yes, CT secondary and Rated Relay input current are matched. That’s are like 1000/5 A 930 A or 2000/5 A 1650 A consider, Rated Relay input…