Hello, I apologize if I missed the answer to my questions in the archives.
I have a Jet ElectraVan that I am replacing the old GE EV-1 SCR controller with an Open Revolt controller. I've used a home made reversing switch for years, but it's slow and showing some wear. I picked up a Contact Industries CT200C-12B1 200 amp reversing switch to replace my home made unit. Now I have some questions: 1) Is 200 amps enough? The car is 102 volts with a 20 HP motor. The motor current should average well under 200 amps, but I am a little concerned about the size of the bus bars on the contactor. They measure 1/2" X 5/32" and the supplied jumpers are 1/2" X 1/8" 2) This reversing contactor is built like every other reversing contactor that I have seen in that it has two contactors in tandem and one or the other is activated for either forward or reverse. It doesn't have a mechanical interlock. Why not change the jumpers so that both contactors are activated for reverse and neither for forward? The coils are 12 volts @ 2 amps. 25 coil watts doesn't seem to be continuous duty, so I built a driver to use PWM after the initial pull in to reduce the current to about 200 mA. The driver works fine and includes the interlocking logic for the throttle. But, I would rather not waste the power since the car goes forward 99% of the time. Thanks, Mike _______________________________________________ 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)
