220V 3 phase

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Rfoster66

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Hello I’m not quite sure if this is the correct group to ask, but here we go…

My friend has bought a machine from…. CHINA. It says 3 phase 220V and has a motor that says 220/380V 3 phase wired delta (220V). We are in VA USA, and have single phase 240V, I’m possibly thinking of using an ATO 1 ph to 3 ph VFD to convert. I have no clue about 220V 3 PH, can anyone tell me if phase to phase IS 220V? Or is that phase to ground? THANK YOU
 
When checking that the name plate does say 50/60 Hz, I noticed it also has "Ratio: 50:1" stamped on it. Just curious what that means?

Cheers, Wayne
 
If this is a 6-lead motor, it appears that it draws 0.5A when connected in a wye configuration with 380V L-L, and 0.85A (i.e., 1.73 x 0.5A) in a delta with 220V L-L. In either case there would be 220V across each winding.

The 380/220V would be common in 50Hz systems. If you were only supplying the motor, you could likely maintain the same V/Hz and run it at 460/266V. However, this machine evidently has heating elements and electronics and so I would not elevate the voltage from what is shown.
Isn't there a nameplate on the machine itself, preferably near where its power input is located?
 
synchro said:
If this is a 6-lead motor, it appears that it draws 0.5A when connected in a wye configuration with 380V L-L, and 0.85A (i.e., 1.73 x 0.5A) in a delta with 220V L-L. In either case there would be 220V across each winding.

The 380/220V would be common in 50Hz systems. If you were only supplying the motor, you could likely maintain the same V/Hz and run it at 460/266V. However, this machine evidently has heating elements and electronics and so I would not elevate the voltage from what is shown.
Isn't there a nameplate on the machine itself, preferably near where its power input is located?
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Thank you for the information. There wasn’t much data to be had on this thing. Lots of sharpie writing, I’ll see if I can find more info and post it here ASAP.
 
Rfoster66 said:
I’m possibly thinking of using an ATO 1 ph to 3 ph VFD to convert.
Click to expand...

I would not feed a VFD with a VFD,
You can find info on that ENC VFD thats in the photo here:

EN600 series high performance flux vector type frequency inverter-Frequency Inverter，servo controller，PLC specialized manufacturer-Shenzhen Encom Electric Technologies Co., LTD.

As one of top 10 low voltage frequency inverter brand in China, Shenzhen Encom are national high-tech enterprise with independent intellectual property rights. We focus on the research, development, production and sales of industrial automation products which mainly includes frequency inverter...
www.encvfd.com
 
Rfoster66 said:
Hello I’m not quite sure if this is the correct group to ask, but here we go…

My friend has bought a machine from…. CHINA. It says 3 phase 220V and has a motor that says 220/380V 3 phase wired delta (220V). We are in VA USA, and have single phase 240V, I’m possibly thinking of using an ATO 1 ph to 3 ph VFD to convert. I have no clue about 220V 3 PH, can anyone tell me if phase to phase IS 220V? Or is that phase to ground? THANK YOU
Click to expand...
3phase voltage designation is always phase to phase.

Your machine already appears to have a VFD on it already. You cannot (should not) feed a VFD with a VFD, what you would do is REPLACE that VFD with another one that is properly rated for single phase input. That then entails understanding ALL of the programming in the one on the machine now, and being able to successfully program the new one to match in EVERY detail. If this is foreign to tou, I suggest your friend find someone who is experienced and capable of this task, it can be daunting for those unfamiliar and mistakes can be costly.
 
Jraef said:
3phase voltage designation is always phase to phase.

Your machine already appears to have a VFD on it already. You cannot (should not) feed a VFD with a VFD, what you would do is REPLACE that VFD with another one that is properly rated for single phase input. That then entails understanding ALL of the programming in the one on the machine now, and being able to successfully program the new one to match in EVERY detail. If this is foreign to tou, I suggest your friend find someone who is experienced and capable of this task, it can be daunting for those unfamiliar and mistakes can be costly.
Click to expand...
That takes care of the motor issue, but it does not address the heating system and controller.

I would be looking at a digital style 1phase to 3phase convertor.
I have seen units, like those from Phase Perfect, used on CNC machines.
 
What if a transformer was used to drop/buck the voltage to 220V, then use a rotary phase convertor for the 3Ø?
Or, if the machine could handle the 240V, skip the transformer and just use the RPC?

I hooked up a machine with a control center and it allowed an RPC as long as the manufactured leg wasn't used for the single Ø controls.
 
Little Bill said:
What if a transformer was used to drop/buck the voltage to 220V, then use a rotary phase convertor for the 3Ø?
Or, if the machine could handle the 240V, skip the transformer and just use the RPC?

I hooked up a machine with a control center and it allowed an RPC as long as the manufactured leg wasn't used for the single Ø controls.
Click to expand...
That’s what I had to do, the manufacturer specified a specific rotary converter, and from what I read, buck/boost where not recommended on the output side, so even though it would call for a larger transformer, it would be the best like you said, and put it on the line side of the converter. This manufacturer even gave which phase input the manufacturered leg should go on.
 
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