[Windy]

Hello Everyone, I have a question for some of you old-time EVers. Does anyone know what application the 84-144 volt EV-1 might have been used in? FSIP Flight Systems Industrial Products lists this control card in their catalog. They sell Repo. manuals as well as a rebuild exchange program for several kinds of controllers. I know these ar low tech by todays standards but it would be nice to be able to upgrade a low voltage EV-1 to 84-144. Thanks,Windy

[Ioku]

I;m sort of confused on what you mean, it sounds like you what to upgrade an ev1 with some sort or ev1 controller, now you do know the ev1 is basically gone now right, all but a few of them have been crushed.

[TheSGC]

Originally Posted by Ioku

I;m sort of confused on what you mean, it sounds like you what to upgrade an ev1 with some sort or ev1 controller, now you do know the ev1 is basically gone now right, all but a few of them have been crushed.

The poster is referring to the GE EV-1, not the GM EV-1. The GE EV-1 is a SCR controller that was mainly used on forklifts and other large electric moving vehicles. It was a controller that was modular, and had different "cards" for different voltage ratings. I believe a few people have EVs with them in the EV Album, but the controller itself is not nearly as efficient as a modern PWM controller, but it will do the job.

[Chris Sandberg]

Hello Windy and group, The General Electric EV-1 control is a early PWM (power with modulator) control from the info I have received and it came in voltages for the applied forklift or other DC mobile equipment. The control came in voltages of 24-36vdc, 36-48vdc and higher, but I only have data on the 48vdc controls. I am sure they are the same just larger in size for the higher currents and voltages. If you need a copy let me know and I can PM it to you. The challenge now is I have modified the drawing for my use and was wondering if anyone would give me input as to if this will still work. I have posted the images and and hope they are readable let me know if not
Thanks in advance
Chris Sandberg
A newbie / beginner

[jtmarten]

My 1980 Bradley GTE came with the GE EV-1 control system, with a 96v system. Just finishing up replacing it with a 1221C.

[mamodbasher]

[quote=Chris Sandberg;80273]Hello Windy and group, The General Electric EV-1 control is a early PWM (power with modulator) control from the info I have received and it came in voltages for the applied forklift or other DC mobile equipment. The control came in voltages of 24-36vdc, 36-48vdc and higher, but I only have data on the 48vdc controls.

Does anyone have a photo of this actual controller? I think that I may hve one of these, but need to see a picture in order to verify it. Mine looks like a finned aluminum box about 12" square and maybe 3" deep and has the GE "meatball" up in the top left corner of the box - can this be an EV1 controller? Thanks, Ken.

[jtmarten]

The EV-1 is not a PWM (Pulse Width Modulation) controller, its a simple SCR forklift-type controller. I'll try uploading a pic of my original 96v system.

[mamodbasher]

Originally Posted by jtmarten

The EV-1 is not a PWM (Pulse Width Modulation) controller, its a simple SCR forklift-type controller. I'll try uploading a pic of my original 96v system.

Thanks for the info and the picture - wow, that's an impressive looking array! Mine does not look anything like that. I guess I will have to wait until next week (the guy is gutting it and all of the other parts out of the machine for me) and get some numbers off of it. I hope he can find the manual for it. Ken

[Dennis]

The EV-1 is not a PWM (Pulse Width Modulation) controller, its a simple SCR forklift-type controller. I'll try uploading a pic of my original 96v system.

WRONG! This IS a PWM controller that uses the GTO thyristor as a switch instead of a mosfet to do the chopping. You can hear the whine noise of the switching frequency at low speeds.

[headrush]

I found I inherited one or actually two of these. I have no idea where to find information on them, what they are worth or if it would be better to get rid of them and get Kelly or Curtis controlers.

and this one