Jeffrey Jenkins wrote: > Note that there are some controllers without any significant amount of > input capacitance, like the old GE EV1 and EV100 types, that very well > could be damaged by interrupting power to them while under load.
I can't say that it isn't possible to damage the GE EV1 by repeatedly interrupting power to them while under load, but I can say with certainty that it is possible to interrupt power to it while under load without damaging it in the least. I have done this with mine. It seems to me that any competently designed controller ought to tolerate sudden removal of input power while under load, as this is a completely foreseeable event (e.g. battery pack fuse opens, or interconnect fails, etc.). As to the role of the inertia switch, it seems to me that in addition to disabling the controller (potentially a controller that has lost its mind, and so cannot be relied upon to respond to a keyswitch or other logic input), another important role is to disconnect the traction pack to minimise the risk of traction voltage getting onto the chassis or elsewhere in the event of a serious accident (which is really the only time the inertia switch should be tripped). Cheers, Roger. _______________________________________________ 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)
