Excellent post !
On 03/01/2014 17:49, James Lambden wrote:
> The purpose of a fuse is to limit the short circuit current potential
> of a battery. As batteries increase in energy density it becomes
> even more critical. Consider a 400 amp hour Lithium cell. It has a
> short circuit current potential of 4,000 amps. Multiply that by a
> system voltage of 48 volts and you now have a short circuit power
> potential of 192 KW! With Lithium it is advisable to fuse at the
> 12 volt level bringing the potential of 48 KW (12 x 4,000 amps) down
> to 2.7 KW ( 12 x 225 ).
>
> Although we have never seen a fuse blow in one of our systems, it is
> advisable to carry an extra fuse along anyway. The big reason why we
> don't see blown fuses is because the controllers are current limited.
>
> Ignoring safety issues creates issues we don't want to contemplate.
> If we concentrate on the safety issues, then we can make our electric
> boats the safest boats on the water!
--
-hanermo (cnc designs)
------------------------------------
Yahoo Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/electricboats/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/electricboats/join
(Yahoo! ID required)
<*> To change settings via email:
electricboats-digest@yahoogroups.com
electricboats-fullfeatured@yahoogroups.com
<*> To unsubscribe from this group, send an email to:
electricboats-unsubscribe@yahoogroups.com
<*> Your use of Yahoo Groups is subject to:
http://info.yahoo.com/legal/us/yahoo/utos/terms/
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment