VFD for a Transformer
VFD for a Transformer
(OP)
Okay here we go again on this subject about sending machines to other frequency Countries. They want to send a couple of small band saws (120v-60hz) to a 240v 50hz country. If I set the VFD for a max of 120v output, will this work?





RE: VFD for a Transformer
Actually, for a universal motor it may work well on 120 Volts 50 Hz.
OR
How about one of these?
http://www.milwaukeetool.com/power-tools/cordless/...
It may be easier to power the charger. You may be able to do it with a modified UPS.
Bill
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"Why not the best?"
Jimmy Carter
RE: VFD for a Transformer
RE: VFD for a Transformer
You would have to SERIOUSLY over size a UPS to be able to deal with the starting current of an AC motor on something like a band saw. That would be very expensive.
By the time you get done with all the rigamarole it will take, it will be far far easier to just go out and get 230V 50Hz motors for them. If not, just get a transformer to step the 240V 50Hz down to 100V 50 Hz, which gives them the same V/Hz ratio as the motors were designed for. The motor will run 20% slower, but will produce full torque and not over heat or (shouldn't) over load.
Or buy new small band saws over there that are designed to work over there, saving the shipping cost as well. Sometimes people try too hard to insist on making electrical stuff work in foreign countries when it would be so much simpler to start fresh. They just don't understand what it means.
"Will work for (the memory of) salami"
RE: VFD for a Transformer
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: VFD for a Transformer
RE: VFD for a Transformer
Aside from the voltage and frequency issue you may also have approvals issues.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: VFD for a Transformer