EVTV News - March 5, 2010. Part 1 of 8 2009 Mini Cooper Clubman Electric Car

[vpoppv]

Mr. Rickard, I tend to agree with you wrt the misinformation in the forums, and I greatly appreciate the information you present. I will not use coil suppression in my next EV based on Kilovac's recommendation. However, I AM using the coil suppression diode that originally came on my Albright contactor (sw-200) in my current EV, because on page 11 of the Curtis Controller manual it is recommended. I was hoping you could comment on Curtis' recommendation. Thank you,

Paul

[marionrickard]

If you are set on using coil suppression, and the older Albrights do tend to use them, you want a zener in series with the coil suppression diode. This changes the time constant of the spike suppression. These circuits are described all over the net - Google.

[AndY1ksi]

I'm not that much of electrician, mostly basic knowledge, but I know, that repair engineers, that fix Vectrix maxi-scooter (120V-145V battery charged voltage), use Inrush Current Limiter, when the reconnect the battery to the electronics. Couldn't you use ICL, connected in series as well? You'd avoid arcing entirely.

[Doctorbass]

Jack, Are you sure it's Hydrogen in these EV250 contactor? like you mentionned near 6:32.. I would think it is more like NITROGEN.. and not Explosive Hydrogene right?