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Line drawings similar to the Westinghouse PDF and other texts would be a Good Thing. X/R operate characteristics, also; at least enought to introduce the ideas that protection designers have to work with in a quantitative way. Plus, of course, it's so much more interesting to see how springs and fields interact as opposed to the generic black box "convert everything to digits and crunch numbers" approach of digital relays. -- Wtshymanski ( talk) 16:02, 8 September 2010 (UTC) reply

I found a link to the Westinghouse Silent Sentinel book, (reference 5) but I'm on company time and it would take a long time for me to remember how to do citations. If someone wants to add it, here it is https://babel.hathitrust.org/cgi/pt?id=wu.89089711683;view=1up;seq=5 7/7/17 173.15.73.218 ( talk) 19:33, 7 July 2017 (UTC) reply

There is a separate article Numerical relay. However, much of the content overlaps unnecessarily with the content in this article. Further, the difference between digital and numerical protection relay from an industry insider perspective rests on points of fine technical detail, and the work required to have separate Wikipedia pages on these topics may not be necessary or justified. I recommend merging the content of Numerical relay with this article, and then deleting it. Marshelec ( talk) 02:09, 5 April 2020 (UTC) reply

• Oppose - numerical relay article is a broad topic and is expandable. Störm (talk) 14:05, 13 August 2020 (UTC) reply
• Oppose - Numerical relays have can have control functions and thus not limited to protective functions in a power network. — Preceding unsigned comment added by 203.30.100.1 ( talk) 00:53, 8 March 2021 (UTC) reply

Closing given the uncontested objections and no support. Klbrain ( talk) 21:51, 16 March 2021 (UTC) reply