Tom, Did you use heatshrink on the cables? I know of many types of Heat Shrink that has heat activated glue inside to adhere to the cable it is crimped onto, maybe that glue migrated to the wire strands? Alternatively, maybe the cable insulation expelled something, possibly under high temp, which then dried on the connections? Cor.
On Thu, Dec 15, 2022 at 2:10 PM Tom Jones via EV <ev@lists.evdl.org> wrote: > > I have a conversion that has been on the road since 2009. It has a Zilla > 1kLV and a Warp9 for propulsion. The traction pack consists of 44 CALB > 180 Ah cells for about 150 volts. > > The Zilla, hairball, two contactors, breaker and a shunt have been in an > aluminum box for all those years. I recently had reason to open the box > and check connections and see if there was anything going wrong. The box > is not water tight but the contents were dry and generally very clean, > there were no signs of any problems. > > When I took apart some of the high current connections, I found them to > be covered with a very sticky clear film. That film was very hard to > remove. Acetone and a lot of rubbing did a fair job of cleaning the > contacts. But, it was not easy. Only the high current contacts had this > problem. Inside the box, no other surface had the sticky film. > > So, here is my question, does anyone on this list have any idea about > how that sticky film developed? Or, has anyone else ever seen this issue? > > Tom Jones > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20221215/4513b3eb/attachment.htm> > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
