rklopp
Diamond
- Joined
- Feb 27, 2001
- Location
- Redwood City, CA USA
I have an Aciera F5 mill from the Canadian market. It is equipped with motors labeled 550 V on the nameplates. One motor is explicitly labeled as being wired Y, and I assume the other is, too. I have no idea whether the neutrals are accessible. In any event, what is the allowable range of voltages I can use to drive these things? +/-10%? This will help me pick a transformer. I have a commercial 240-V RPC that runs on the high side, perhaps at 245 V, on the non-generated legs. The mill came with a brand new 208-600V open-delta 3-phase autotransformer. I have not tested it, but the math says I should get over 700 V on the non-generated legs. Is this unacceptably high?
(Sorry for the sideways and upside-down pictures. Blame my iPhone. (Which, by the way, is fantastic for reaching into dark obstructed places to visualize motor nameplates that would be silly difficult to see using a flashlight and mirror, and impossible otherwise, especially for my bifocal-ed eyes.)
(Sorry for the sideways and upside-down pictures. Blame my iPhone. (Which, by the way, is fantastic for reaching into dark obstructed places to visualize motor nameplates that would be silly difficult to see using a flashlight and mirror, and impossible otherwise, especially for my bifocal-ed eyes.)