Timeline for Method to guarantee relay minimum contact switching (wetting) current
Current License: CC BY-SA 3.0
6 events
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| Dec 19, 2018 at 23:03 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Feb 14, 2018 at 20:31 | comment | added | Marshall Eubanks | I have not found any hermetically sealed relays which meet the requirements. This is for testing/qualification so it is desirable to prevent any increase in contact resistance, though I suspect you are right insofar as in our case this is a problem not likely to manifest itself for years after the relays are installed. In either event "assume it won't be a problem" isn't really an ideal response, and I need to have the resulting solution in service long before we'd have time to test this empirically. | |
| Feb 14, 2018 at 19:47 | comment | added | vofa | What kind of environment is the relay installed in? Wetting current requirements depend on how contaminated the contacts can get. If there is no source of contamination, there is no need to ensure a wetting current. If it's installed exposed to salty sea air the situation is totally different than if it's installed inside a climate controlled residence, for example. If this is a big concern in your system, consider using a hermetically sealed relay. | |
| Feb 14, 2018 at 17:43 | answer | added | Andy aka | timeline score: 2 | |
| Feb 14, 2018 at 17:14 | review | First posts | |||
| Feb 14, 2018 at 17:38 | |||||
| Feb 14, 2018 at 17:13 | history | asked | Marshall Eubanks | CC BY-SA 3.0 |