ASC motor run caps....can they be mounted horizontal???

jmillerdoc · 10th March 2010, 04:59 AM

Hello,
I am designing a pair of 300B monoblocks and I have come up with a chassis concept that would require the ASC's to be mounted in a horizontal orientation. Does anybody know if this is ok being that they are filled with oil?

My plans are to have a 3" tall chassis that is 18" deep and 10" wide. In the middle 4" of the amp from front to back I will seperate the PSU part of the amp from the driver/output part of the amp with 3 of the ASC's lying horizontal oriented longwise from front to back. Imagine two seperate boxes about 7x10" connected by the caps themselves, 3 cylinders conneting the 2 boxes. I think it will look pretty neat but I am concerned about this mounting causing some problem with the caps due to the oil level.

Comments???
Jeff

wrenchone · 10th March 2010, 05:08 AM

I doubt there's a problem, but why not check out the ASC web site? Google is your friend...

mach1 · 10th March 2010, 06:55 AM

I've mounted several horizontally with no issues short or long term.

zigzagflux · 10th March 2010, 11:32 AM

They are rated for operation in any orientation.

bear · 10th March 2010, 01:07 PM

Oil filled?

Are you certain??

Seems unlikely - most motor run caps today are Polypropylene or other film, and older ones were paper and foil...

Maybe post a jpeg of the items...??

_-_-bear

jrenkin · 10th March 2010, 01:27 PM

Cool idea! Can't wait to see pictures. Those caps are industrial and pretty sturdy, should run any way you like. I wouldn't think twice about mounting them sideways or upside down, just not inside out....

Gluca · 10th March 2010, 02:16 PM

ASC sells also bracket to mount them horizontally. They are polypropylene and oil and the VDC rating is 1.5x the VAC rating (roughly, confirmed by ASC tech support).

I use them most of the times.

tomlang · 10th March 2010, 02:36 PM

I just replaced a furnace blower motor and associated motor run capacitor. The cap was horizontally mounted from the factory and afaik still fine after 10 years.

kevinkr · 05:07 PM

Quote:

Originally Posted by bear

Oil filled?

Are you certain??

Seems unlikely - most motor run caps today are Polypropylene or other film, and older ones were paper and foil...

Maybe post a jpeg of the items...??

_-_-bear

Have used quite a few "PPIO" ASC oil filled motor run caps over the past few years. (In all orientations) They make lots of them, check out their website for confirmation. Very good for psu use.

Don't confuse motor start caps which are almost always dry (and not rated for continuous duty) with larger motor run caps which are often oil filled and rated for constant operation and quite high currents.

Lots of other companies make them as well.

TheGimp · 10th March 2010, 05:16 PM

http://www.aerovox.com/pdf/T2.PDF

Older article that is none the less interesting and informative. If the predictions in it are correct, current losses should be half what the article states.

10th March 2010, 04:59 AM	#1
jmillerdoc diyAudio Member Join Date: Mar 2009 Location: Lawton, OK, USA	ASC motor run caps....can they be mounted horizontal??? Hello, I am designing a pair of 300B monoblocks and I have come up with a chassis concept that would require the ASC's to be mounted in a horizontal orientation. Does anybody know if this is ok being that they are filled with oil? My plans are to have a 3" tall chassis that is 18" deep and 10" wide. In the middle 4" of the amp from front to back I will seperate the PSU part of the amp from the driver/output part of the amp with 3 of the ASC's lying horizontal oriented longwise from front to back. Imagine two seperate boxes about 7x10" connected by the caps themselves, 3 cylinders conneting the 2 boxes. I think it will look pretty neat but I am concerned about this mounting causing some problem with the caps due to the oil level. Comments??? Jeff

10th March 2010, 06:55 AM	#3
mach1 diyAudio Member Join Date: Sep 2004 Location: Brisvegas	I've mounted several horizontally with no issues short or long term. __________________ Au rutti wop-bop-a-loom-bop-a-boom-bam-boom - Richard Penniman

10th March 2010, 01:07 PM	#5
bear diyAudio Member Join Date: Apr 2002 Location: New York State USA	Oil filled? Are you certain?? Seems unlikely - most motor run caps today are Polypropylene or other film, and older ones were paper and foil... Maybe post a jpeg of the items...?? _-_-bear __________________ _-_-bear http://www.bearlabs.com ...ur feeback please - like/dislike my what I have written? PM/email tnx. --

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10th March 2010, 05:08 AM	#2
wrenchone diyAudio Member Join Date: Feb 2004 Location: Silicon Valley	I doubt there's a problem, but why not check out the ASC web site? Google is your friend...

10th March 2010, 11:32 AM	#4
zigzagflux diyAudio Member Join Date: Oct 2006	They are rated for operation in any orientation.

10th March 2010, 01:27 PM	#6
jrenkin diyAudio Member Join Date: Nov 2007 Location: Denver, Colorado	Cool idea! Can't wait to see pictures. Those caps are industrial and pretty sturdy, should run any way you like. I wouldn't think twice about mounting them sideways or upside down, just not inside out....

10th March 2010, 02:16 PM	#7
Gluca tarmac ripper diyAudio Member Join Date: Nov 2004 Location: Back to Italy	ASC sells also bracket to mount them horizontally. They are polypropylene and oil and the VDC rating is 1.5x the VAC rating (roughly, confirmed by ASC tech support). I use them most of the times.

10th March 2010, 02:36 PM	#8
tomlang diyAudio Member Join Date: Oct 2009 Location: Augusta, GA	I just replaced a furnace blower motor and associated motor run capacitor. The cap was horizontally mounted from the factory and afaik still fine after 10 years.

10th March 2010, 05:16 PM	#10
TheGimp diyAudio Member Join Date: Aug 2009 Location: Johnson City, TN	http://www.aerovox.com/pdf/T2.PDF Older article that is none the less interesting and informative. If the predictions in it are correct, current losses should be half what the article states.

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