10-23-2013, 09:42 AM
I have run both static and rotary phase converters for at least 20 years. They both work without problems. I have run the very same machinery (woodworking machinery 2.5 to 7.5 hp) on true 3 phase power. There is a difference, I can hear it on start up. True three phase has a "quicker, more energetic" start. And I do believe you can "feel" less horsepower with a phase converter. But once that motor is spinning, the machine does what it is intended to do.
I recently "acquired" a VFD and tried it out on a 20" woodcutting Powermatic bandsaw, hoping to be able to use it occasionally for metal work. It seemed to work fine as well. It is not hooked up yet.
The same source offered me a variable speed, 3 hp dc motor (runs off 110 ac) that I am thinking of putting on a SB13 lathe. He assures me that there is plenty of low rpm tork, and I will probably get higher rpm's than I get now with the original 2hp 3ph motor. My only concern with that is whether the bearings are designed to handle higher rpm's on the lathe? But, the high rpm's would only get very occasional use I would think.
Many options to run 3 phase machinery these days.
Larry
I recently "acquired" a VFD and tried it out on a 20" woodcutting Powermatic bandsaw, hoping to be able to use it occasionally for metal work. It seemed to work fine as well. It is not hooked up yet.
The same source offered me a variable speed, 3 hp dc motor (runs off 110 ac) that I am thinking of putting on a SB13 lathe. He assures me that there is plenty of low rpm tork, and I will probably get higher rpm's than I get now with the original 2hp 3ph motor. My only concern with that is whether the bearings are designed to handle higher rpm's on the lathe? But, the high rpm's would only get very occasional use I would think.
Many options to run 3 phase machinery these days.
Larry
LJP, proud to be a member of MetalworkingFun Forum since Aug 2013.