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ProGrade, Certified Electrical Contractor
Category: Electrical
Satisfied Customers: 547
Experience:  28+ years exp. - installation, troubleshooting, & repair of commercial, & residential electrical systems.
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What equipment do I need to convert 208-230V 3 phase to 460V

Customer Question

what equipment do I need to convert 208-230V 3 phase to 460V 3 phase
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: new project, we need about 50A of 460 3ph
JA: Do you plan on doing the work yourself?
Customer: yes, we have our maint people here at plant
JA: Anything else we should know to help you best?
Customer: don't think so
Submitted: 7 months ago.
Category: Electrical
Expert:  ProGrade replied 7 months ago.

Welcome to

What kind of loads will the 50 amp consist of, a large motor or two or several smaller Motors and other mixed equipment?

Customer: replied 7 months ago.
We are running a 50Hp and 25Hp motors with VFD. We are using a 600 second ramp up time, so no sudden loads
Expert:  ProGrade replied 7 months ago.

Thank you so both Motors will be running at the same time will they both start at the same time even on vfd?

Customer: replied 7 months ago.
they start at same time
Expert:  ProGrade replied 7 months ago.

10-4, thanks, ***** ***** it...

Expert:  ProGrade replied 7 months ago.

This would require a minimum 75 kVA step-up transformer, 225A feeder conductors, with secondary distribution and OC protection.

Let me know if you have any questions

Thank you

Expert:  ProGrade replied 7 months ago.

Following up, any progress? Any more questions?

If not, please rate my service before leaving the site so I can be paid for my efforts on your behalf.

Thank you very much

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