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Author Topic: Looking for a capacitor  (Read 594 times)

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Offline MagnumTopic starter

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Looking for a capacitor
« on: March 17, 2024, 07:21:16 pm »
Hello,
I am looking for a capacitor, I think the english word is safety or suppression capacitor.

It is from a heater controller between mains. It blew up, I removed it and now the controller works again.
Unfortunately I can't find it online, can someone tell me what I could use instead? It seems to be 5nF Y1?

Many thanks!
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Offline fzabkar

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Re: Looking for a capacitor
« Reply #1 on: March 17, 2024, 07:42:55 pm »
« Last Edit: March 17, 2024, 08:08:21 pm by fzabkar »
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Offline TimFox

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Re: Looking for a capacitor
« Reply #2 on: March 17, 2024, 07:43:39 pm »
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Offline MagnumTopic starter

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Re: Looking for a capacitor
« Reply #3 on: March 17, 2024, 07:52:41 pm »
Thank you for your help.
In Germany I found this one, does it matter if it is Y1 or Y2?

https://www.pollin.de/p/entstoerkondensator-4-7-nf-250-v-rm-10-y2-200693
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Offline MagnumTopic starter

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Re: Looking for a capacitor
« Reply #4 on: March 17, 2024, 07:53:39 pm »
Ok, I found the explanation for Y1 and Y2. IMHO Y2 should also be fine...
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Offline Gyro

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Re: Looking for a capacitor
« Reply #5 on: March 17, 2024, 08:47:24 pm »
That should never happen with a Y cap. It is there to provide interference suppression but safe isolation between primary (mains) and secondary sides, or primary and ground. Y1 capacitors have a test voltage of 8kV and Y2, 5kV. What happened? Nearby lightning strike?
« Last Edit: March 17, 2024, 08:49:03 pm by Gyro »
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Best Regards, Chris
 

Offline fzabkar

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Re: Looking for a capacitor
« Reply #6 on: March 17, 2024, 08:54:21 pm »
Quote
It is from a heater controller between mains.

If the capacitor is connected from line to line, then it's an X class capacitor, not Y class.

That said, your chosen replacement appears to be X1/Y2 rated.
« Last Edit: March 17, 2024, 08:55:59 pm by fzabkar »
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Online Zero999

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Re: Looking for a capacitor
« Reply #7 on: March 17, 2024, 09:12:54 pm »
Does the rest of the circuit work? Assuming it's not a fake Y capacitor, then I would expect other parts to be badly damaged it replacing it will not fix it.
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Offline MagnumTopic starter

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Re: Looking for a capacitor
« Reply #8 on: March 20, 2024, 06:24:03 pm »
Sorry for the late reply.

The rest of the circuit works after I removed the capacitor. I don't know what happened as no-one was at home when it blew.

The one I ordered is a Y2, I have to recheck if it connects between mains or to ground.

Thank you for all your help and information!
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Offline gamalot

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Re: Looking for a capacitor
« Reply #9 on: March 21, 2024, 07:28:30 am »
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Offline MagnumTopic starter

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Re: Looking for a capacitor
« Reply #10 on: March 21, 2024, 10:09:45 am »
Thank you!
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