| Electronics > Beginners |
| Can electrolytic capacitors freeze and burst? |
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| Xena E:
--- Quote from: bdunham7 on Today at 05:33:10 pm --- --- Quote from: Xena E on Today at 05:21:39 pm ---Get drunk and stay drunk until you get to a hospital with dialysis facilities. The ethanol will competitively inhibit ethylene glycol metabolism, and formation and accumulation of the toxic metabolites. --- End quote --- Two things I remember about this are 1) you have to be very drunk, the ethanol was typically given via IV because the amount would make many people too sick to drink it all and 2) you'll eventually eliminate the glycol on your own because there are two routes--one it is eliminated directly and without harm and the other it is converted to oxalic acid which destroys your kidneys. I'm sure there's more to it, but I remember the oxalic acid because I had a kidney stone (not ethylene glycol related) and it was mentioned as being part of the process. --- End quote --- Could easily be you ingested it in the form of rhubarb pie! Oxalic acid is contained in the leaves of the plant and their stems if exposed to light whilst growing. |
| bdunham7:
Nobody has asked--what brand/model was the capacitor? |
| cybermaus:
Not sure. I did not open the device as yet, as I am awaiting warranty judgement, which will probably take a few days. But it is bound to be a proper one, as it is a Victron, which should be a proper brand MPPT. Here is a link of the exact same model device opened by someone else (for a different reason). https://community.victronenergy.com/t/can-the-non-replaceable-fuse-in-the-100-30-mppt-controller-be-repaired/17584/7 |
| Xena E:
[On topic mode] Was the device powered up whilst in the low temperature state? Some have badly deteriorated specifications when they are operating near their temperature extremes. Even loss of capacitance can cause something like a rise in ripple that could cause it to fail perhaps? X |
| cybermaus:
Well yes. I mean, there will not have been a lot of solar, but it was of course hooked up to the battery. As is normal for a solar install in a camper. And well within -30..+80 operating spec. (Note: for lead, not for LFP. Keep your LFP's out of the frost guys) Anyway, the reason I asked here on EEV as a generic question (as well as with the victron specialists for the more device specific review) is because I wanted to sound out if anyone has ever had a frozen cap. As I asked at the start: "Can they freeze? Anyone has had such a thing before?" "Or am I completely chasing phantoms with this freeze theory?" Personally, it would be a completely new failure mode to me, even though cars are full of capacitors while outside in winder. So far, no one seems to have admitted to ever having a cap fail due to freezing, even though @CaptDon claims to normally test them to -40C. |
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