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bob.verwey(at)gmail.com
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 Posted: Sun Jun 27, 2021 7:41 am Post subject: Interav OV relay: how to do an integrity test. |
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So I'm sitting with this interav OV regulator of unknown condition that I want to test.
It has all white leads, but it's fairly easy to pick up what appears to be the coil at 3 ohms and the contacts on the other two wires.
[img]cid:ii_kqfcys9w6[/img]
Now since I don't really know how these devices work, I'm looking for advice on how to test effectively.
Do these devices work/not work, or is there more to it?
Best Regards,Bob Verwey
082 331 2727
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user9253
Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan
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| Posted: Sun Jun 27, 2021 11:50 am Post subject: Re: Interav OV relay: how to do an integrity test. |
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Are the wires shorted together that you suspect are the contacts?
If not, maybe the 3 ohms are the contact wires. 3 ohms could be from corroded contacts.
3 ohms is too low for a coil. It would draw almost 5 amps and get very hot, 70 watts of heat.
Assuming the contacts are normally closed, then:
If one pair of wires is open, it means that either the contacts are not making contact or the coil is open.
In either case, the relay is defective.
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Joe Gores |
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bob.verwey(at)gmail.com
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| Posted: Tue Jun 29, 2021 11:13 am Post subject: Interav OV relay: how to do an integrity test. |
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Hi Bob,
Indeed, a potted version of the device so no salvageable knowledge there!
Appreciate the feedback; this is one for the bin!
Best Regards,Bob Verwey
082 331 2727
[img]https://docs.google.com/uc?export=download&id=0B5d7rgAInTuTUUZsUjY4QmJsdVU&revid=0B5d7rgAInTuTdDJDaXRFZVh3b3lMa3FWL0s3MFdzc01YRlNvPQ[/img]
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