Lec-01: Introduction to Digital Relays-I

In this lecture, I have discussed about the classification of digital relays. Here, relative advantages and disadvantages of first generation of relays i.e. electromechanical and second generation of relays i.e. static relays are discussed.

[@Souvik91]

very well explained

[@deepakbaba2393]

Good afternoon noon sir....
In locomotive two relays used OCR 78 and MVR 86 ....WHAT IS THE MEANING OF THESE NUMBERS 78 AND 86 ...?????

[@salamkadhim6949]

Thank you very much
l need pdf