RE: Maxwell 37667 pulse caps

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Leigh Copp" <Leigh.Copp@xxxxxxxxxxx>

Yes, BIL stands for Basic Impulse Level, however in IEEE 
C57-12.01-1998 they actaully call it Basic Lightning Impulse 
Insulation Level, even though the acronym is BIL. It is indeed a 50 
us rise ring wave test.

IEEE stds C57, and 400-1991 more specifically defines this in detail. 
I'd attach the excerpts but they are in table format, and I'm not 
sure how much cut and paste is allowed before they call it copyright 
infringement :)

It does pertain to the lightning "withstand" capability of electrical 
apparataus.

Happy thanksgiving to all those on the list who are celebrating this weekend.

Cheers,

Leigh



	-----Original Message-----
	From: Tesla list [mailto:tesla@xxxxxxxxxx]
	Sent: Wed 22/11/2006 12:17 PM
	To: tesla@xxxxxxxxxx
	Cc:
	Subject: Re: Maxwell 37667 pulse caps
	
	

	Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>
	
	Hi Jim, all,
	
	It's my understanding that although the "BIL" rating
	does have something to do with an electrical utility
	component's high voltage standoff of line transients
	well above the typical operational voltage (like light-
	ning hits), the letters B-I-L actually stand for -- Basic
	Impulse Level. I've been told that the BIL voltage
	rating is the test voltage that the component is designed
	to withstand in the form of a 50 u/sec pulse. I believe
	that fellow list members Bert Hickman and/or Jim Lux
	has explained this on this list in the past and I'm sure
	that they could further expound upon it much better
	than I have.
	
	David Rieben
	
	
	----- Original Message -----
	From: "Tesla list" <tesla@xxxxxxxxxx>
	To: <tesla@xxxxxxxxxx>
	Sent: Wednesday, November 22, 2006 4:33 AM
	Subject: RE: Maxwell 37667 pulse caps
	
	
	> Original poster: "Jim Mora" <jmora@xxxxxxxxxxx>
	>
	> Chip,
	>
	> Don't feel bad, I have my pair as do many others, I'm sure. They are
	usually
	>
	>
	> They generally have a high built in "BIL"
	> rating (Built in Lightning standoff) which says a lot about the
	insulation.
	> Anacronyms go with the territory! I think there is place on Pupman that
	> defines them.
	>
	> Jim Mora