So I drew a really crude wiring diagram. http://goo.gl/kAj5wH
Note that it is important the two packs are balanced within a few volts of
each other after the series charging. Otherwise when you reconnect them in
parallel they will arc across the connector and cross charge at a VERY HIGH
AMPERAGE.
T-Rex / KD
SSI-Racing
-----Original Message-----
From: Steve Clunn via EV
Sent: Thursday, March 26, 2015 7:15 AM
To: ev@lists.evdl.org
Subject: [EVDL] charging two parallel packs in series
Subject: [EVDL] Open Circuit Voltage Across Contactors
I've got two Anderson contacts on my pack, one on the negative side
and one on the positive side. So when the key is out of the ignition,
the controller and all other components are separated from the
traction pack. I currently have a 120V system, with two strings in
parallel, because I have a Curtis controller, which has a 144V max. I
would, however, like to be able to charge faster with my PFC-30. So
my question is, if I reconfigure the packs to be in series for
charging, is there any problem, since both contactors will be open?
Bill>
This could be done safely by leaving one pack ( pack A ) hooked up
normally then using two Anderson connectors with your charger being
the only thing connected to pack B's battery plus ,chargers neg will
go to pack A's neg. Pack B will hook to pack A using a 175amp or
bigger Anderson disconnect with pack A's pluses going to pack B's plus
and A's neg to B's neg , this will be for driving and parallel
charging . Pull the disconnect and plug in a Anderson jumper plug
which will connect the A packs positive to the B packs negative and
now your are charging in series. If you forget to switch back , no big
deal you will just be running on pack A . A few ways to set up these
Anderson's , I think the 175 amp Anderson would be big enough . I
would have one on pack A and 2 and pack B ( one for series and one for
parallel ) The series plug will have its b+ plug going to the B packs
neg .
shameless plug ,, we sell them but there not on the web site
Steve Clunn
Merging the best of the past with
the best of the future.
www.Greenshedconversions.com
_______________________________________________
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)
