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Turn on surge/ Capacitor rating question....

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Posted on January 22, 2015 at 20:13:44
Iczerman
Audiophile

Posts: 147
Joined: July 23, 2000
 1000v B+.
Power supply is CLC- 50uf-4H-50uf.

Capacitors are ASC 1200v Blue Line oil caps ( not bad caps at all ;) )
Playing with psud..the turn on surge is around 1400v....my 2000v bridge rectifier will be okay...but will the caps be damaged over time or go out with a bang.....or go out with a bang at an unknown period of time?

 

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RE: Turn on surge/ Capacitor rating question...., posted on January 22, 2015 at 20:55:59
Paul Joppa
Industry Professional

Posts: 7295
Location: Seattle, WA
Joined: April 23, 2001
 ASC is a good company - there must be a data sheet or application guide that gives the answer.

 

RE: Turn on surge/ Capacitor rating question...., posted on January 23, 2015 at 05:16:20
Chip647
Audiophile

Posts: 2649
Location: The South
Joined: December 24, 2012
 Sim it with a 50 ohm resistor right off the rectifier.

 

RE: I don't see that cap listed on their web site, posted on January 23, 2015 at 13:50:54
Russ57
Audiophile

Posts: 3754
Location: South Florida
Joined: November 16, 2001
 I doubt you will have a problem but it mostly depends on how long the over voltage lasts. If for a fraction of a second...or one full second...pretty much sure it will be no problem. If several seconds.....gets more iffy.

Drop them an email and ask. I can tell you their DC filter caps that are rated for 1,100 VDC are good for something like 1,600 VDC surge.

 

RE: Turn on surge/ Capacitor rating question...., posted on January 23, 2015 at 17:39:52
sony6060
Audiophile

Posts: 1465
Location: USA
Joined: August 8, 2014
 ASC caps should be ok. Bridge rating is somewhat light (less than 2x voltage). Years ago it was found 2.5 x the operating voltage kept SS rectifiers alive.

 

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