Our meter tests have three goals:
- Prove that the analog-to-digital converters inside the relay are working correctly.
- Prove that we’ve connected it correctly; so we’re not wasting time troubleshooting connections later.
- Prove that the relay’s frequency, phase rotation, CT ratios, and PT Ratios settings are consistent with the system.
Can a simple three-phase test prove all of this? Watch this video to find out.
Do you think an unbalanced three-phase test can meet all of our goals? Watch this video to find out.
This is the test procedure I use to make sure that I’ve met all of our goals.
There are plenty of other ways to meet all of our goals and you can create your own now you know the strengths and weaknesses of the most common tests.
Open-Delta PTs and GE SR Relays
Watch this video to see how to perform a meter test with wye and open-delta PTs on a GE SR relay.
Modern relays can be set with Open-Delta or Wye PTs. We try some experiments to see what happens when we apply the wrong connections and voltages to both kinds of PT configurations; so you can see what it should look like when they’re right and wrong.
Perform a Meter Test on GE UR Relays
Watch this video to see how to perform a meter test on a GE UR relay.
Modern relay software can also show phasor diagrams and we look at that procedure in this video.
Perform a Meter Test on Beckwith Electric Relays
Perform a Meter Test on Siemens SIPROTEC Relays
Perform a Meter Test on ABB Relays
Perform a Meter Test With Omicron Test Universe
Watch this video to see how to perform a meter test using Omicron Test Universe.
Perform a Meter Test With Doble F6150 Test-Sets or Enoserv RTS Software
We can’t use their products without express permission from them, even if we rented or purchased them. We’ve been trying to get that permission for years but no-one seems to know who we should talk to, or they don’t return our messages. At this point, the only hope is for you to contact your local Doble rep and ask them to contact us to participate.
Perform a Meter Test With Megger Test-Sets
We contacted Megger to see if they wanted to participate and they said that they need approval from the higher-ups before they could send a test-set. Please contact your Megger rep and ask them to contact Greg Valdez (Megger’s Marketing Communications Manager) to see if we can add them to this series.
Perform a Meter Test With Other Test-Sets
Don’t see your test-set in this series? Leave a comment below and we’ll see if we can get a demonstration unit and add a video for that test-set.
Click “Mark Complete” below after watching the video so you can keep track of your progress.