Help Identify That Cap

Einric · 21st May 2013, 10:31 PM

Hey folks, I obviously can tell this is a 17.5uF cap @ 300VAC but could somebody help me with the type (I know it's electrolytic, LOL).

Einric · 10:59 PM

It still measures 17.7uF.

Bibliophile · 21st May 2013, 11:22 PM

Quote:

Originally Posted by Einric

Hey folks, I obviously can tell this is a 17.5uF cap @ 300VAC but could somebody help me with the type (I know it's electrolytic, LOL).

No, not electrolytic.
Probably paper in oil.

jacco vermeulen · 21st May 2013, 11:46 PM

Metalized polypropylene, oil (eccol) filled.
Identical to CSC motor-run caps (commonwealth sprague capacitors)

Einric · 22nd May 2013, 12:02 AM

I have a box of like 10 of these they appear to never have been used.
None of the quick connects have been scratched by use.

JMFahey · 22nd May 2013, 12:25 AM

As jacco says, probably motor run/starter caps *or* line power factor correctors.
Same grueling industrial use anyway.
Tough guys.

Einric · 22nd May 2013, 03:02 AM

They were in the box with some power traffo's that were about the size of a softball.

I'm thinking about building a Tubelab Simple P-P with 6CW5's and a couple of these in parallel would get me right to the 47uF I need.

21st May 2013, 10:33 PM	#2
Einric diyAudio Member Join Date: Feb 2011 Location: Bozeman, MT	It still measures 17.7uF. Last edited by Einric; 21st May 2013 at 10:59 PM.

21st May 2013, 11:46 PM	#4
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, Rotterdam or Curaçao	Metalized polypropylene, oil (eccol) filled. Identical to CSC motor-run caps (commonwealth sprague capacitors) __________________ Not so much,.......if it says "ZM" in the corner.

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22nd May 2013, 12:02 AM	#5
Einric diyAudio Member Join Date: Feb 2011 Location: Bozeman, MT	I have a box of like 10 of these they appear to never have been used. None of the quick connects have been scratched by use.

22nd May 2013, 12:25 AM	#6
JMFahey diyAudio Member Join Date: Mar 2009 Location: Buenos Aires - Argentina	As jacco says, probably motor run/starter caps or line power factor correctors. Same grueling industrial use anyway. Tough guys.

22nd May 2013, 03:02 AM	#7
Einric diyAudio Member Join Date: Feb 2011 Location: Bozeman, MT	They were in the box with some power traffo's that were about the size of a softball. I'm thinking about building a Tubelab Simple P-P with 6CW5's and a couple of these in parallel would get me right to the 47uF I need.