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By Edvard Csanyi | Jul, 24th 2019 | 8 comments | Translate | Save to PDF
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Home / Technical Articles / Practical implementation of the six most common transformer protection principles
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We have 10MVA power transformer STAR-STAR in our 110/33KV Sub-Station and we have two Incomers the Transformer is tripping on Diffrential relay on all three pahses (RET 615) ABB make whenever one of the Incoming Supply fails .all the CTs connections are ok. can you explain me what is causing this type of tripping.your comments would be higly appreciated
You are great, Edvard, for sharing your even greater knowledge to many engineers and technical oriented individual. This is a big help to maintenance engineer like me. God bless you, Edvard.
Am a young engineer. I want to know if mercury oil and transformer oil the same.
What type of electrical transformers use mercury?
Where are Mercury located in electrical transformers?
I loved your article , can you please describe the way we do relay settings for
1) transmission line protection using ( distance (21) , Pott, dcb )
2) Transformer protection ( using differential ( 87 ) , 50/51 , 50/51G )
3) Busbar protection ( 87 )
4) Feeder protection ( 50/51, 50/51G)
you can take any arbitary example any arboitary line parameters , and calculated fault values and do the relay settings , it would be real helpful to my project and my new job to learn something for a knowledgable guy like you , again doesnt matter what the relay , I just want to know the basics , thank you
This is good staff.keep us posted. I want to be a member
Am excited to read your article which are more powerful.
Let be in touch for your advice .
Nice article. Very informative.
In Figure 1, mercury is already a banned substance. Any new materials replacing Mercury and its details? Thank you.
I got this information incidentally and since then getting very good articles on electrical engineering. what more benefits I will get by becoming membership.