If you’ve read anything about relay testing in the last five years, you’ve probably read the terms “system testing” or “dynamic testing”. This style of testing tries to answer the question “Will this relay work properly when I put it into service?”; instead of the typical relay test plan that answers “What do I need to do to get checkmarks on my electro-mechanical based relay test sheet?”
Dynamic, or system, tests draw the characteristic curve of the protection and apply faults along the characteristic to prove that the relay has been programmed correctly. We’ll show you how to perform this style of testing in the following videos.
These videos will show you how to create and/or modify dynamic tests to test logic with your test-set.
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Click Here if You Use an Omicron Test-Set
Click Here if You Use an Omicron Test-Set
Click Here if You Use a Manta Test-Set
Click Here if You Use RTS Software to Perform Your Tests
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Would it be possible to get copies of the plans you used in these training videos for the Omicron? I would like to go through them and see how you made them which is a bit hard to do from watching the videos
This should be the file I used in the video .
Download the file
Hope it helps.
Thanks
On your second video Putting it all together omicron test universe I think you may accidently built the wrong test during the 2 minute mark…Once you built your test for your 50 p element, you switched over to a 51G, where I think you intended originally for a 50G.
Thanks for the comment. You are correct that the relative to field shows 51G, but that field doesn’t really do anything in this context. The genius of the Omicron Overcurrent module is that it knows what the relay will do when I apply 9.6A and will mark the test as a pass. The test module description is 50 timing tests.
Hi Chris,
So have you changed to dynamic testing whenever you’re testing a digital relay instead of the old pick-up timing testing method?
And do you recommend I make this change cause the old pick-up timing test method is still more recognized at my place.
Thanks,
dc
It was pretty anti-climatic when I changed from regular testing to dynamic test dynamic testing of digital relays. I was worried about backlash, so I didn’t tell anyone that I changed how I was testing the relays and… no-one noticed. The choice is really:
Do I just want to get numbers for my test report? Choose the old-fashioned method and cross your fingers that the relay was programmed correctly; and that someone won’t start asking questions in the future when the relay doesn’t trip, or trips when it’s not supposed to.
Do I want to get numbers for my test report and make sure the relay will operate when it is supposed to? Choose dynamic testing, expect to find problems, and maybe educate the equipment owner.
When running the dynamic tests as shown in the video do I need to run one for each phase to ground and each phase to phase combination? I have already run a proper meter test sequence.
That’s up to you. Technically you probably wouldn’t have to do A-N, B-N, and C-N when testing a ground element because the element uses residual neutral current instead of phase current. The same would apply if a phase element uses the maximum current instead of the specific phase currents. Phase and neutral elements are different, so the minimum would be one phase and one ground fault.
However, as relays get more complicated, simple typos can disable relays, so I would perform tests on all phase combinations for my own peace of mind. The extra time is usually negligible.