Rotary Phase Converter General Questions

What is a rotary phase converter, and what does it do?
A rotary phase converter is an electrical device that converts single-phase power into three-phase power. The third phase, also known as the generated leg, is created by an idler motor. The generated leg combines with the two single-phase lines to create three-phase power. This allows for the operation of three-phase equipment without needing to upgrade the utility service.
What does CNC mean? Can a North America Phase Converter run a CNC machine?

CNC stands for Computer Numerical Control. There are multiple types of CNC machines, including lathes, mills, routers, and plasma cutters. Preprogrammed computer software guides the machine, turning raw materials into finished parts.

Computer-operated machinery is often highly voltage sensitive, requiring a balanced and consistent power supply to run. Pro-Line rotary phase converters are rated to run CNC machines by keeping the voltage balanced +/-5%. Additionally, TritonPro Maxx™ digital phase converters are equipped to run voltage-sensitive CNC machines.

What size rotary phase converter do I use for my load?

Correctly sizing a rotary phase converter is extremely important for it to properly run. Generally, we recommend either sizing for the largest load it will start and run by itself or for the total of all the loads that it will start and run together. Each phase converter page features a sizing chart to use as a starting point.

Important Questions to Consider During Sizing:

  • What type of load (machine/equipment/motors) are you running?
  • What is the horsepower, amperage, or kVA rating of your load?
  • How old is the load/equipment?
  • Where were the machines, equipment, or motors made?

These are just some of the factors to consider when sizing a phase converter. Our sizing tools page is a helpful resource. You may also email us at info@napces.com or call us toll-free at 877-545-2926 for professional sizing help.

Starting and Running Questions

How does the rotary phase converter start? Do I need a starter/motor starter?
Every rotary phase converter needs a manual or magnetic motor starter or some other approved motor starting mechanism. Every North America Pro-Line Rotary Phase Converter includes a built–in motor starter.
How much electricity does a phase converter use?
Inconsequential! A rotary phase converter, by itself, is in an idle state and draws only the amount needed to keep it energized. This is only a few kilowatts and in some cases less than one.

Mounting, Installation and Wiring Questions

Do North America rotary phase converters have flexible mounting options?
A North America rotary phase converter is a two component design featuring an idler generator and the control panel.
Can I install a rotary phase converter outdoors?
Yes, NEMA 3R enclosures and TEFC idler generators are available as an upgrade for outdoor locations.

Please call us at 877-545-2926 or use our contact form …

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