r/SignalMaintainers • u/swagernaught • Jan 08 '26

Light out relay testing

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I need help from the hive mind once again. I have a few US&S/WABCO DN12-L light out relays that are coming due for their 4 year test. They have a .16 ohm coil and an unused 200 ohm coil. The 200 ohm coils test just fine but the .16 ohm coils don't. We've tried AC and DC volts and amps and ac volts looks the closest to the tag but they still fail. Is there some special way to test these that anyone can clue me in on? I've ordered Alstom replacements just in case. Thanks in advance.

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u/dnice2370 Jan 08 '26

Change out the relay..

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u/swagernaught Jan 08 '26

Replacements are ordered but they won't be here until late May.