Did you know that a relay connected to, or set with, the incorrect phase rotation can disable its higher level functions? Did you know that the wrong phase rotation can make your relay testing worthless? Did you know you can quickly and easily tell whether the phase rotation is correct
Here is the latest video describing the Permissive Under-Reaching Transfer Trip Communication-Assisted Trip Schemes used in modern distance protection. You can follow along with this animation via the Can You Predict What Happens in a Permissive Over-Reaching Transfer Trip (POTT) Scheme? post found under the Testing handbooks / Book Extras
In-service protective relay meter tests are THE MOST important tests that should be performed on every digital relay. All of your offline relay testing is meaningless if: The CT/PT ratios are incorrect. The relay isn’t connected to its input signals (CTs/PTs). The relay is looking in the wrong direction. The
Jeffrey Brown reached out to help announce his new book, Power Line Carriers – Simplified: A Field Engineer’s Perspective [pullquote align=”normal” cite=”Jeffrey Brown – www.plcexperts.net”]I would like to Introduce your First and Last Book on Power Line Carriers. Everything a Field Engineer needs to Know when it comes to protecting
Want to get the best relay training possible? Sign up for the 35th annual Hands-On Relay School in Pullman, Washington happening March 12-16, 2018. They fill up fast, so you should sign up today! https://cm.wsu.edu/ehome/index.php?eventid=268868& This is not a paid promotion. We did not, and will not, receive any financial
If you’ve read anything about relay testing written in the last ten years or so, you’ll see a pattern; No-one is talking about the traditional pickup and timing tests most relay testers (and most automated relay testing software) use to test relays. You are much more likely to read terms
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