As long as you don't need the full blower capacity, you can probably do the 3-phase-to-single-phase trick by using a capacitor from the third lead to either (which one will determine rotation direction) of the two other leads and feeding those leads with single-phase. It's done very often here with 3-phase shop equipment acquired by residential hobbyists. For motors, it's not critical, but it's not something that you'd want to do for electronics--the phase distortion rules that out.
--Chuck On 9/7/21 11:31 PM, Curious Marc wrote: > Yes, we are hoping that we can power the blower with 3 phase and the > rest directly from the 240V electric car circuit… Not sure if that can > be rewired for that. > Marc > >> On Sep 6, 2021, at 6:50 AM, Patrick Finnegan <p...@vax11.net> wrote: >> >> >> On Mon, Sep 6, 2021, 06:36 Curious Marc via cctalk >> <cctalk@classiccmp.org <mailto:cctalk@classiccmp.org>> wrote: >> >> I got both the 3420s and the 3808 from Sellam. On the restoration >> docket, now with a better chance thanks to the ALDs which I >> recently got from Gabriel himself. I scanned my 3420 ALDs and gave >> them to Gabriel in return. Biggest annoyance, besides humongous >> size and weight, is the amount of 3 phase power required. >> >> >> From what I remember, the only thing that requires 3 phase in the >> whole system is the blower motor in the 3420 drives. The rest are >> powered off of single phase 200-240VAC. >> >> The large 3 phase input on it 3803 is likely overkill for even a >> controller and full string of 8 drives. It's easier to oversize things >> and have a 3x safety margin, then deal with running close to the >> limits and risk any problems from poorly installed site wiring. >> >> Pat >> >> -- --Chuck Sent from my digital computer
