Need a 380Y/220 transformer

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CoolWill said:
We cannot change what is in place
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You sound like an agent from CONTROL, the secret, but inept U.S. government spy agency based in Washington, D.C.. that does battle against its equally inept nemesis known as KAOS
 
electrofelon said:
I've got a small mixer I need to power. It needs 3 phases plus a neutral and my premise system is 240V, thus I need a 240 delta to 380y/220 transformer. The motor is only .75 KW. I can find such a transformer no problem however the smallest one immediately available is 3KVA and a couple grand. It won't be used much and isn't really a prize anyway so I'm just trying to come up with a cheaper option. It's an annoying voltage, he's trying to come up with another more common transformer that would have the same ratio and nothing works. I thought about making up my own Delta/Wye Bank out of single phase control transformers. I would need 240 to 220 volt transformers. Can't even find those. Anybody got any nice creative bastard solution I may have overlooked?
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Look up that drive on Google. It's some China verter AT3-0750X, which is 3PH 3W input.

https://www.ebay.com/itm/126941199372 I think the 0.75kW version, the AT4 is a variant of the same series except with 220v 1PH input (which means 220,230,240 whateva, because EU)

This one I think is 1.5kW (2hp) rated version of the same.

So, perhaps the neutral is needed for something else (controls/interface) on the mixer that runs L-N and tells the VFD what to do however that drive should be basically bolt-on.

Then, since it's the same drive (see the manual), I suppose you'll just need to copy over the settings from the original drive to the new one.

 
Flicker Index said:
Look up that drive on Google. It's some China verter AT3-0750X, which is 3PH 3W input.

https://www.ebay.com/itm/126941199372 I think the 0.75kW version, the AT4 is a variant of the same series except with 220v 1PH input (which means 220,230,240 whateva, because EU)
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I would expect the 220V input version of the drive to have a corresponding lower DC bus voltage and lower maximum output voltage.

Jonathan
 
Besoeker3 said:
What's to understand ? I have given you on what my expertise is and where I have been along that road.
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Your resume doesn't explain why you are obsessed with telling Americans how simple it is in Europe.It doesn't matter. It is irrelevant. A man needing a transformer for a 380 volt machine in Pittsburgh isn't helped at all by how simple it is in Liverpool.
 
CoolWill said:
Your resume doesn't explain why you are obsessed with telling Americans how simple it is in Europe.It doesn't matter. It is irrelevant. A man needing a transformer for a 380 volt machine in Pittsburgh isn't helped at all by how simple it is in Liverpool.
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Yet again you are wrong. I'm not obsessed with anything. Not even you,
 
winnie said:
1) What is the frequency rating of this mixer? Will 60Hz operation make it run faster, and might need a higher voltage to maintain V/Hz ratio?
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This…

480V 60Hz is roughly the same ratio of V and Hz as 380V 50Hz, so the motor will operate correctly. It is going to spin faster anyway, but if you give it 380V and 60Hz, the ratio is wrong and it will produce less torque at the higher speed. I suggest just getting a standard 240-480/277 transformer.
 
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