The single phase leg to leg voltage at my panel is 246V.
I got my 25HP rotary phase converter (RPC) running. I have a 30KVA transformer hooked up to it to get 400V 3ph to drive my German CNC lathe. I want to use both the low voltage 230V side and the high voltage 400V side.
At my old place, I was getting about 415V leg to leg or so on the high voltage side. At my house, I’m getting about 430V-440V leg to leg on the HV side, without any load.
Now, on the low voltage side, I read 265V, 256V and 242V leg to leg, without any load.
265V and 256V seem a little on the high side for me.
I’m wondering what an acceptable voltage range would be that won’t hurt my machines (Mighty Comet VMC 10HP spindle, Webb/Whacheon WL-435 lathe 5HP spindle, Boyar-Schultz surface grinder, pedestal grinder, ...)
I got my 25HP rotary phase converter (RPC) running. I have a 30KVA transformer hooked up to it to get 400V 3ph to drive my German CNC lathe. I want to use both the low voltage 230V side and the high voltage 400V side.
At my old place, I was getting about 415V leg to leg or so on the high voltage side. At my house, I’m getting about 430V-440V leg to leg on the HV side, without any load.
Now, on the low voltage side, I read 265V, 256V and 242V leg to leg, without any load.
265V and 256V seem a little on the high side for me.
I’m wondering what an acceptable voltage range would be that won’t hurt my machines (Mighty Comet VMC 10HP spindle, Webb/Whacheon WL-435 lathe 5HP spindle, Boyar-Schultz surface grinder, pedestal grinder, ...)