585V to 480V

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CNC Girl

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I recently bought a vacuum Pump from Canada, the Voltage is 585V I need to get it stepped down and cant find a transformer, and ideas on how to get it to 480V?
 
CNC Girl said:
I recently bought a vacuum Pump from Canada, the Voltage is 585V I need to get it stepped down and cant find a transformer, and ideas on how to get it to 480V?
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You have 585 and need to provide 480 to the appliance?
Can you share nameplate details?
585 sounds like a 600V distribution.
600V-480V (or the other way around) transformers are pretty common.


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CNC Girl said:
3 phase 60 hz 38 amps
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You need a 480V-600V transformer.
Check with acme, Hammond, sq D, etc. they’ll all have what you need.
Motors usually have a nameplate listing utilization voltage to allow a few volts drop from the service. (Think 460V motor hooked up to 480V supply). So your 575V motor is designed for a 600V service.


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If your 480 supply is Y configuration, you can use three autotransformers, or 480:120 transformers wired as autotransformers.

If this is a small, lightly-loaded motor, you might be able to attain satisfactory performance on 480 volts.
(caveat: This is definitely the Appalachian Engineerin' approach, and requires several variables to align in your favor)
 
You need a nominal 45 kVA 480:600V 3 phase step up transformer.

There are lots of details to a proper transformer installation, breakers on primary and secondary sides, conductor sizing, grounding. All stuff that anyone can learn but not stuff that we (over an internet forum) can know if you don't even know to ask.

You should treat any information you get here as a rough suggestion you should take to a professional electrician, and not as DIY instructions.
 
CNC Girl said:
I recently bought a vacuum Pump from Canada, the Voltage is 585V I need to get it stepped down and cant find a transformer, and ideas on how to get it to 480V?
Click to expand...
Had a 500 ton injection molding machine with a 100 HP 575 Volt very hard to get to motor so we decided to call a great local transformer shop for a 575 to 480 volt three phase transformer rather then have motor shop rework it. Sold us a used large and a small buck boost transformer that worked great.Normally I always used three identical KVA buck boost transformers for three phase loads.
 
synchro said:
The autotransformer below, or another one this manufacturer, might be suitable for powering the vacuum pump:

https://canadatransformers.com/45-kva-autotransformer-rc45j1-h.html
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Negative. The opposite is needed. The goal is to power a 575v motor from a 480v source.

Added: Examples:

Canada Transformers - order and purchase Electrical Transformers

Canada Transformers sells dry-type electrical transformers, three phase isolation transformers, epoxy encapsulated, drive isolation motor-starting autotransformers, line reactors, transient filters
canadatransformers.com canadatransformers.com
 
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Even when 'primary' and 'secondary' are labeled as such?

Added: I looked and found their 480v primary auto-transformers only have lower-voltage secondaries.
 
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