Hey folks, we have a 10 meter fully rotating dome structure with a shutter door. The shutter door motor is a 3-phase AC motor (1.6 A, 0.18 kW, 900 RPM) connected to some gearbox which is attached to a pulley system. The pulley system is responsible for opening & closing the shutter door. It was operating since 1986 but malfunctioned a few years ago and now we're trying to bring it back online. The main issue is that the AC motor needs a 480 3-phase power source to operate which means that we cannot rotate the dome if we want to open/close the shutter door, otherwise the power cable will snap.
So under these circumstances, what's the optimal solution? Slip rings are not an option as this is a volunteer effor and we want to minimize costs. Would replacing it with a DC motor + batteries work? Any ideas?
Attachment 247570