Depends whether you design and build the charger or you want a retrofit. The simplest form of isolating anything is to add an isolation transformer on the incoming AC lines. Drawback is that it is a heavy and somewhat expensive (and inefficient) device, especially for large power levels. Up to 1000 or 1500 Watts it is OK and there are plenty charger implementations that actually use a transformer (either for isolation or to adjust voltage, in the latter case it is not guaranteed to be isolated, depending on the design. Modern design will always use high frequent conversion which allows isolation using much smaller transformers, typically using some form of powder iron as conversion losses in old fashoned laminated core (iron sheets) transformers are too high at high frequency. This means that chargers (as well as power supplies) can be much smaller and lighter and still provide high power output. Since isolation often requires one additional transformer, the lowest cost (or highest power per volume/weight) chargers are not isolated. But there is no reason not to add isolation if you find it important in your design - just select the correct topology.
Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.info Skype: cor_van_de_water Tel: +1 408 383 7626 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of M. G. Sent: Sunday, June 30, 2013 4:40 AM To: [email protected] Subject: Re: [EVDL] AC-76 and faster charger thoughts? What would it take to make any charger isolated? Mike Sent from Yahoo! Mail on Android -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130630/d340 b134/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
