Connect the Test-Set to the Relay


Connect the Test-Set to the Relay

Topic Progress:

Watch the Manta Test Systems video to see how I would connect any test-set to the relay. The key is to replace the CTs and PTs with test-set channels and simulate what the relay sees when it is connected to the power system.  This way we can find out if the relay is connected and set correctly for this application.  If we connect the test-set to the relay the way that the manufacturer specifies, all of the elements would test perfectly and we would have no idea that some were disabled or looking in the wrong direction because the relay is incorrectly connected to the power system.

Guess how I learned about problems like these?

I should mention that these videos were possible because Omicron and Manta Test Systems have been very generous with their time and resources.

Manta Test Systems

(Everyone should watch this video for universal techniques)

The basic principles discussed in this video can be applied to any test-set, but some test-sets have slightly different voltage/current channel configurations and connections that we discuss in the following videos. We didn’t add additional information about the DC output/input sensing connections because they are almost identical across all test-sets.

These videos will show you how to connect a relay to your test-set.

Valence Electrical Training Services is not endorsed, sponsored, or affiliated with any company, trademark, or owner of any trademarks presented in these videos. This material is intended for educational and informational purposes only and any use falls under the Fair Use Doctrine of Section 107 of the Copyright Act.

Click Here if You Use an Omicron Test-Set

Click Here if You Want to See More Videos About This Topic

Click “Mark Complete” below after watching the video so you can keep track of your progress.

Collapse Comments
vishnupremchand (Group Leader) July 25, 2016 at 2:03 pm

Hi Chris

Excellent demonstration so far.

Just a suggestion; its wise to advise a precautionary voltage test with a multimeter on the test switch voltage connections before connecting to the test set as sometimes the 3 line drawings may be wrong if the engineer did not verify the connections at the FAT before approving the drawings and also ensure the drawings are coded IFC & Stamped by the engineer prior to use. I had some issues like this with equipment connections not matching the drawings in the past. Thanks

Chris Werstiuk (Group Leader) July 25, 2016 at 3:04 pm

Excellent point. Thanks for adding to the conversation!

Shahamat (Group Leader) November 25, 2016 at 2:42 am

Excellent demo.

We have Ponovo POM 2 6143 test set.
Can you give demo on this ?

I can send the test video and its related necessary information.

Chris Werstiuk (Administrator) November 25, 2016 at 7:55 am

Thanks for your comment.

I’ve never seen one of these in North America. Do they have a North American rep? If I can get one shipped to me here in Denver, if something we could do in 2017.

Dave E. (Administrator) March 11, 2017 at 7:20 am

We’re having techincal problems with our comments right now. Hopefully it will be resolved soon. In the Meantime, Dave asks.

‘In reality, I would operate 49T, I would not try to simulate it.’ If you were to choose this route, could you simply leave the switches 13-14, 11-12, and 15-16 closed for the test? Then if you had to simulate 52a and the 86 because you cannot trip the breaker, you can put the output contacts from the test set in parallel with the 86T and 52A contacts which are series with the relay inputs?

Chris Werstiuk (Administrator) March 11, 2017 at 7:20 am

You are correct.

If you were operating the end devices, you would leave all the switches closed.

The connections you show in your drawing would be a second best solution because it uses almost all of the system wiring, so you’re proving more of the system. If the breaker was closed, you would move your output contact across
and to prove the wiring.

The last solution would be applying voltage through the test switches.

jeremy_z889 (Group Leader) November 11, 2017 at 1:01 pm

Omicron CMC 356 ? Can you show testing And information regarding this equipment . It would help me out thanks.

Chris Werstiuk (Administrator) November 12, 2017 at 2:23 pm

There is a video describing Omicron on this page.

Great Videos Chris. I’m finding them very insightful despite my 12 years sporadic experience in testing relays. I’m sure you’ve addressed this elsewhere but do you have a recommendation for best devices to use to make the connection to the test switch? Do you use alligator clips, spades, or something else? I typically use test spades (open lug terminals), from Pomono but find them prone to breaking and relatively expensive to replace.


Chris Werstiuk (Administrator) August 5, 2018 at 11:36 am

Thanks for the question.

Almost all test-set leads have banana to banana, which is great if all your relays are connected to the top of Westinghouse style test switches and you have test paddles. I use bananas to connect to the test-set and alligator clips to connect to the device I’m testing. If I got a set of leads from the manufacturer, I would cut them off and attach some Mueller alligator clips. I wouldn’t solder them, though, because I found that the alligator clips wore out and I had an annual maintenance day where I would go through the leads and replace the worn out bananas and alligator clips. They would get shorter with every maintenance interval if I used solder.

Doble F6150E tutorial please?

Chris Werstiuk (Administrator) September 21, 2020 at 6:59 am

Out lawyers are working on it. Hopefully they’ll come in 2021.

I was raised on a Pulsar and cut my teeth on the Omicron CMC356

We need to get a Pulsar for the people that really started on this early in their career for the sake of “good memories.”

Nothing like hitting 10 buttons to make the machine do the work!

Chris Werstiuk (Administrator) November 29, 2021 at 4:00 pm

I really, really hated the Pulsar. I always forgot to press a key and had to start the whole sequence again.

Leave a Comment