Meat Grinder with 208V 3 Phase motor 1

[surbani]

I purchased a meat grinder and had the option to set the voltage at either 208V 3 phase or 220V 3 phase, we chose 208V.

The problem is we have recently moved to a new location and now have 220V 3 phase service. What can we do to fix this? Is there a way to reset the voltage in the grinder? Or can we use a transformer?

Thank you!

 

[surbani]

scan 3

 

[surbani]

scan 4

 

[Skogsgurra]

That's a very wise move, showing the diagrams.

There are five motors. All are said to be 200 V.

Does that compute? Do the motor nameplates say the same thing?

Gunnar Englund

http://www.gke.org

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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[stevenal]

And five inverters (VFDs). Seems like they should be settable for the higher voltage, or could be replaced with ones that can operate at that voltage.

 

[edison123]

Going by your first attachment, these motors are VFD driven ?

Muthu

http://www.edison.co.in

 

[surbani]

Hi guys thanks for the replies. I'm going to try to check the nameplate voltage this afternoon. If I do get a transformer should I get an auto or isolation? This company beaverelectrical.com said they could make a custom transformer for 240 to 220. But wanted to know auto or isolation. Any suggestions? Thanks again everybody.


What's a vfd?

 

[Skogsgurra]

A Variable Frequency Drive. Used to supply motors if you need to run at other speed or voltage than the nameplate says.

Gunnar Englund

http://www.gke.org

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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[surbani]

They also suggested that harmonics could be a problem with the transformer. Any suggestions?

 

[Skogsgurra]

If there are VFDs, chances are that you can stop ask all these questions. VFDs usually take care of it all. Get help from a professional if you feel unsecure.

Re harmonics. That is usually not a problem with VFDs. But you will certainly not need them.

The adjustment that the supplier did was an adjustment to grid voltage. It can be done again if you have another grid voltage now.

I think that it is about time to close this chatbox. Even if we are nice guys that like to help, we get tired when threads go on and on without getting anywhere.

Gunnar Englund

http://www.gke.org

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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[surbani]

you're right youve all been great guys.

thank you for all your help and sorry for the thread going on and on.

I have one electrician hooking everything up, as well as a guy at the transformer company that is an electrical engineer.

I don't know who else to hire.

Stefan

 

[Skogsgurra]

Welcome back with a report how it all went!

Gunnar Englund

http://www.gke.org

--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[waross]

If that is the Beaver electric that I remember, they were a competent, reputable firm.
I am sure that they will give you what you need at a fair price.
Beaver was one of a couple of motor shops in Vancouver that I had good luck with, years ago.

Bill
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"Why not the best?"
Jimmy Carter

 

[edison123]

Gunnar - The last nail. In future, if anyone comes here with a 'voltage problem', our first question should be, are there any bloody VFD's in the system ?

Muthu

http://www.edison.co.in

 

[surbani]

the VFD's are rated up to 240V so it is on the cusp.