Phase Converter Comparison Chart

Need help evaluating different choices to provide 3 phase power for your equipment or machinery?  Read below about the differences in the types of 3 phase converters and how they score in different tests.  Each product type will receive a rating from 1 to 5 on each category with 1 being poor quality and 5 being excellent.  Remember even in considering these guidelines some companies are currently selling inferior phase converters as another type of product.  We recommend purchasing a product after you have thoroughly investigated the product type and the company who manufactures the product.  One valuable consideration is to choose a manufacturer which is a member of the BBB (Better Business Bureau).  See the Phase Converter Purchasing Checklist for additional important details to consider when selecting the correct brand and model to supply the 3 phase power which you need.  Quality phase converters passing our tests will receive the U.S. Phase Converter Standards Organization Seal of Approval Recommendation.  Click on the product type to read more about why it received the rating in each category.

Quality Category => Phase Converter Type (below)	Operator Safety	Phase Converter Life Span (Target Length of 5 Years)	Produces True Balanced 3 Phase Power	Damage to Equipment
Rotary Phase Converters Note Below	Excellent - Safe.  Rating: 5	Excellent - 35 Years Or More.  Rating: 5	Excellent - Balanced.  Rating: 5	Excellent - Safe.  Rating: 5
Static Phase Converters	Poor - Dangerous.  Rating: 1	Poor - 9 Months Or Less.  Rating: 1	Poor - Not True 3 Phase. Rating: 1	Poor - Can Easily Burn Out Motors And Equipment. Rating: 1
Build Your Own Phase Converter Plans	Poor - Dangerous.  Rating: 1	Poor - 1 Year Or Less.  Rating: 1	Poor - Not True 3 Phase. Rating: 2	Poor - Can Burn Out Motors And Equipment. Rating: 2
Digital Phase Converters	Poor - Rating: 2	Poor - 2 Years Or Less.  Rating: 2	Fair - Not As Balanced. Rating: 3	Fair - Risk To Burn Out Motors And Equipment. Rating: 3
Phase Inverters - VFDs	Fair - Rating: 3	Poor - 2 Year Or Less.  Rating: 2	Poor -  Rating: 2	Poor - Can Burn Out Equipment. Rating: 2
CNC Rotary Phase Converters Note Below	Excellent - Safe.  Rating: 5	Excellent - 45 Years.  Rating: 5	Excellent - Balanced.  Rating: 5	Excellent - Safe.  Rating: 5

Important Notes About 3 Phase Converters
  In our evaluations we found that a number of small companies were selling a product that they called a Rotary Phase Converter, but it was actually just a Static Phase Converter with an electric motor added.  This type of product has the same characteristics as a Static Phase Converter, or a Build Your Own Phase Converter Plans listed above.  There is a big difference between a true 3 Phase Rotary Phase Converter and one of these types.  read more.

See the Phase Converter Purchasing Checklist for additional important details to consider when selecting the correct brand and model to supply the 3 phase power which you need.