280:575 volt machine

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jsilva

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Hello everyone, I have a machine caming from Canada and the name plate on the machine shows dual votage 280:575 Volts 3 phase. This machine has heater. I assume that 575v is the high for the motor, and 280v is for the heater. The heater is 25KW and the motor is 37KW
Here in the states and in my facility we have 480v 208v.
Does any one of you knows about power in Canada? what is the high and what is the low voltage.
If the motor can be wired for lower voltage beside 575v? If not can I use a booster transformer to get from 480v to 575v.
please help if you understand what I am asking.
Thanks everyone.
 
Canada
Industrial Commercial Residential
600/347 volt 3P4W Wye* 600/347 volt 3P4W Wye 240/120 volt 1P3W
208/120 volt 3P4W Wye 208/120 volt 3P4W Wye
600 volt 3P3W Delta 240/120 volt 1P3W
United States
Industrial Commercial Residential
480/277 volt 3P4W Wye 208/120 volt 3P4W Wye 240/120 volt 1P3W
208/120 volt 3P4W Wye 480/277 volt 3P4W Wye
480 volt 3P3W Delta
240 volt 3P3W Delta
 
If it is straight 3 phase get two small buck boosts to get the 480 up to 575.

If it's 3 phase 4 wire you will need 3 buck boosts to do it.

That will be the least expensive option.
 
a 95 volt buck/boost probably would not be practical, even if it was available at that high of boost. I have back feed a 480 to 120/208 delta/wye to get 575 (you can actually get 600 with the increment taps at the right point), but that was with a 240 volt delta service as the primary, probably wouldn't even be close with 208 and the increment taps set as high as they would go.( And yes the transformer was not designed for this voltage, but it has been working for 12 years now) Looks like getting a transformer set up for the proper voltage is the best bet. As much Canadian equipment as there is in the states, somebody should make one.
 
hillbilly1 said:
a 95 volt buck/boost probably would not be practical, even if it was available at that high of boost
Click to expand...

They are available, I have used them in the past, I see no reason not to use inexpensive buck boosts to run a single machine.

What do you think is not practical about this? :confused:
 
We are talking close to 70 kw, it's not going to be that small of a transformer, as the boost voltage goes up, so does the kva rating of the buck/boost transformer because its carrying a larger portion of the current compared to a smaller amount of boost. By the time you buy three of them, I would think the cost would be close to what a standard step up transformer would be. Then again, maybe not.
 
The OP still has to get the 280 for the heater, the buck/boost combination would far exceed this voltage to the neutral. The only system I can think of being able to produce this would be a delta with a center tap. Kinda strange set up.
 
hillbilly1 said:
The OP still has to get the 280 for the heater,
Click to expand...

Something does not make sense, 280 is not what you would have at the neutral of 575.

I assume the machine is rated 280 volts 3 phase OR 575 volts 3 phase. Not 575Y/280.
 
To boost 480V upto 600V, you need a standard 480:120V transformer. Connect the X windings in a 120V arrangement and put this in series with the 480V H windings, just like a standard buck-boost transformer.

Most transformer manufacturers' application guides have diagrams for doing this.
 
iwire said:
Something does not make sense, 280 is not what you would have at the neutral of 575.

I assume the machine is rated 280 volts 3 phase OR 575 volts 3 phase. Not 575Y/280.
Click to expand...
Correct, Not with a Wye connected system,That's why I think the only way they would be able to get that particular voltage would be with a delta. I would think that that would be strange too. You never know what those crazy Canadians can come up with, must be the long cold winters!
 
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