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And another electrical question--HZ differences

A

anallisguy

Member
Receiving a new labeling production machine at work, from China. (sorry, don't ask). Machine includes a transformer. Input to the transformer is
110v, 60hz, single phase. Output is 220v, 50hz, single phase. Machine draws about 12 amps. If I were to skip the transformer, and run an American
220v, 60hz line to the machine, what could I expect? Shortened machine life? operating speed incorrect, causing machine errors? or no noticeable difference?? or something else I missed??
 
First, a transformer will not change 60hz to 50hz.

Being a new machine, I would contact the dealer before making any changes.

If no dealer support is available, I would still connect it exactly as it is intended. At only 12 amps, there would be little to no advantage to going to 220v. If the reason you want to go with 220v is because it's already there, you can move one leg to the neutral, mark it with white tape on both ends, replace the double breaker with a single, 15a for 14ga wire, 20a for 12ga wire. Be sure the ground remains intact.
 
The static transformer is not changing hertz there must be another device to do this with moving parts,Do you have a picture ?
 
As the fine gents below so correctly described a transformer, it is my opinion a passive inductor type of device (if only a true transformer nothing else), can change voltage BUT NOTTTTTTTTTTTTTTTTTTT FREQUENCY

John T
 
Best thing you can do is have your purchasing agent send it back and get a 60hz unit. At the plant where I work now we got in a batch of circuit boards made for 50hz a while back. Did a lot of damage before an electrician happened to notice the hz difference.
 

Need a VFD set to 50hz or the motors will spin everything at 120% of design rpms.
State this in writing to the genious who saved money purchaing the cheapest bid.
 
so I am also confused. I don't yet have the machine, but I do have the transformer, if in fact that is what it is. It has no data plate. The info I provided I received in an email when I asked for the specs. When the machine arrives, I think I'll hook it up the way they said...that way any problems are on them.
 
I've got my Canadian radio on right now made for 50 cycle current and it's working just fine in my American 60 cycle power. It also has a record player and I suspect that would be a little off with turntable speed.
 
It's possible your "transformer" is actually a solid-state inverter, converting the 60 hertz power to 50 hertz.

The frequency may or may not be critical. Many devices are insensitive to frequency. Universal motors, for example, will run on ac or dc. But if there are synchronous or induction motors in the machine, they don't usually like being run at the wrong frequency. Your best bet is to check with the manufacturer of the machine.
 
(quoted from post at 15:35:27 01/05/17) I've got my Canadian radio on right now made for 50 cycle current and it's working just fine in my American 60 cycle power. It also has a record player and I suspect that would be a little off with turntable speed.
Click to expand...

The radio has a rectumfire that converts the AC to DC for the frequency matters little to none.
The turn table will make your music sound somewhat Mickey Mouse but a person could become accustomed to that.
 
(quoted from post at 17:14:38 01/05/17) It's possible your "transformer" is actually a solid-state inverter, converting the 60 hertz power to 50 hertz.

The frequency may or may not be critical. Many devices are insensitive to frequency. Universal motors, for example, will run on ac or dc. But if there are synchronous or induction motors in the machine, they don't usually like being run at the wrong frequency. Your best bet is to check with the manufacturer of the machine.
Click to expand...



What I was thinking... more and more devices have a switching power supply that takes the raw input voltage and converts it to the desired voltage. The frequency of the switching or inverter is preset irregardless of input frequencies.
 
That is the smart move.
Must be more than a transformer if it changes frequency. a transformer would only change voltage. Then again if the Chinese wrote the label/manual it could be anything. still trying to understand the manual for my UHF VHF radio and they did a fair job with that translation.
My wife's exercise machine has a caution sticker that warns her not to put her eye winker too close to the platform...
 
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