Restricted Earth Fault (REF) Protection Basics | Example Using the SEL-487E Protective Relay

[@romeroengineering]

Learn more with our online courses here: www.romeroengineering.co/courses

[@davesmith9867]

Love your content. I like that you give specific examples whereas other channels often just explain the general principle.

[@romeroengineering]

Thanks Dave! Glad you're liking our content

[@krshnkk]

@@romeroengineering can you explain why transformer neutral is solid grounded?

[@synapticmemoryseepage4447]

Your explanation and example is very helpful!

[@kevinxu1765]

Really love it! Very practical.

[@romeroengineering]

Thanks!

[@ahmedsaleh2920]

Many Thanks!

[@jollysingh3949]

Amazing, thanks!

[@romeroengineering]

Thanks!

[@ИльяЛитвинов-ь7э]

Thank you, sir!

[@venkateshkumar4827]

Nicely explained. thanks

[@romeroengineering]

Glad it was helpful!

[@romanluis9908]

Very useful as always. I only have one question, does the type of CT affect the implementation of this scheme?, I mean as this is basically a differential protection, CT's for this REF have to be px class?

[@aloosedeuce8935]

Would the only reason to change the REF50Ga value from the default only come from an unbalanced load?

[@akwasiasare4833]

Nice video up there, can you please make a video on the thermal element is configured in the 487E?

[@romeroengineering]

Thanks for the recommendation, we’ll consider it for a future video.

[@RaymundSanone]

pls also discuss the difference between REF,50/51G and 50/51N

[@romeroengineering]

Thanks! We'll consider it for a future video