The Burndy compound is not a dielectric, it is a contact aid we use on our electrical connections such as cadmium plated aluminum or un-plated aluminum or copper wire and buss terminals.
The dielectric compound we use, is a GE silicone grease that is only use to coat the insulation of a wire only up to the a the wire terminal and on the exterior of a electrical contact. In using a contact aid compound, it must be subjected to a high hydraulic compression for it to work properly. Not good for low compression fitting. I tested this contact aid on one of my battery terminals which was torque to 15 ft lbs which was too high resistance. Roland ----- Original Message ----- From: Hoegberg<mailto:[email protected]> To: Electric Vehicle Discussion List<mailto:[email protected]> Sent: Monday, January 13, 2014 8:49 AM Subject: Re: [EVDL] Dissimilar Metal Contact on LiFePO4 Battery Posts interesting Noalox and Penetrox is not the normal dielectric?, so I would not use it on sensor plugs for example http://ecat.burndy.com/Comergent/burndy/product/PENA134<http://ecat.burndy.com/Comergent/burndy/product/PENA134> this seems to be zinc-fume/dust in thick non-petroleum grease and used for joins with alu-alu or alu-copper. /John ---------------------------------------- > From: [email protected]<mailto:[email protected]> > To: [email protected]<mailto:[email protected]> > Date: Fri, 10 Jan 2014 10:04:14 -0500 > Subject: [EVDL] Dissimilar Metal Contact on LiFePO4 Battery Posts > > Hi Lee etc:I thought that stainless bolts would be a problem on connections on the Cray-3 supercomputer I worked with Seymour Cray on in Colorado Springs but the actual electrical connection is *not* through the bolt but through the contact surfaces of the terminal top and strap (the power supply was 2000A) - although it was in liquid flourinert - no corrosion. All the LiFePO4 batteries sold T-Sky & CALB batteries have M8 stainless bolts and copper straps supplied which are dissimilar metals with the aluminum threads on the battery terminals. I haven't heard of connection problems from those who actually drive their EV's 10K+ miles per year but first sanding or wire brush them & adding Noalox-probably best or dielectric grease to the contacts elleviates dissimilar metal galvanic corrosion. I noticed that doing nothing in a wet east coast environment leaves some white surface corrosion after 20k miles on the aluminum-copper contact point. I ordered NORD lock washers & Noal > ox from Grainger to redo all my connections with the stainless bolts.Have a renewable energy day,mark in roanoke, VA www.REEVAdiy.org<http://www.reevadiy.org/> > From: Lee Hart <[email protected]<mailto:[email protected]>> > To: Electric Vehicle Discussion List <[email protected]<mailto:[email protected]>> > Subject: Re: [EVDL] Keeping LiFePO4 battery terminals tight every 10k > miles > Message-ID: <[email protected]<mailto:[email protected]>> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Michael Ross wrote: >> It is necessary to have a properly sized torque wrench, the willingness to >> look up the proper torque setting for the materials involved, and a _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub<http://www.evdl.org/help/index.html#usub> http://lists.evdl.org/listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA<http://groups.yahoo.com/group/NEDRA>) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140113/09c29ab3/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)
