Phase Converter manufacturer: Phase-A-Matic, Inc.Phase-A-Matic, Inc. Rotary Phase Converter
  HOME
 
 CONVERSION PRODUCTS

  PRODUCTS PAGE
  ROTARY CONVERTER
KW ROTARY CONVERTER .
   KW MODELS & PRICES
   KW DESCRIPTION
   KW INSTALLATION
.

  CNC CONVERTER
  VOLTAGE STABILIZER
  STATIC CONVERTER
  TRANSFORMERS
.

 
 PHASE-A-MATIC, INC.
  CONTACT US
  HOW TO ORDER
  BECOME A DEALER
  ABOUT US
  HOME PAGE
.
 SITE MAP
.

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 














 

      "KW" Rotary Converter Application Notes


On this page:

4 Year Warranty

.

For world-wide use on 50Hz, 400-480VAC

Motor Load Types
Resistive, Computer, Rectifier, Transformer
Multiple Motor Loads
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

PDF Brochures: 

KW Rotary Converter Brochure
KW Rotary Technical Notes
 To download PDF file viewer 
   

 

The Rotary Converter is designed to supply full running current to a three-phase motor, normally providing it with full running torque. However, most motors will draw five times their running current during start-up. When sized KW for KW the Rotary Converter cannot deliver the full (5 times) starting current to the motor and therefore cannot provide full starting torque. You must always use a larger KW rated Rotary Converter than the KW rating of the motor.   

There is no minimum load requirement for the Rotary Converter. Some customers will install a Rotary Converter larger than needed to accommodate any future additions to their equipment. Below are the minimum size recommendations for various applications.

.

Sizing For Load Types

1.

Motor Loads

A...

TYPE 1 Motor Load - American made motors:

This load type applies to machinery with American made motors and which start with no load such as mills with step-pulley speed change, lathes with a clutch, sewing machines, and so forth. Use a converter with KW rating of at least 50% larger than the KW of the motor.*

*Many restrictions apply. Most applications require sizing the converter a minimum of 100% larger (twice the rating). See all load types. Contact Phase-A-Matic, Inc. to verify load type.  

Note: For instant reversing (as for rigid tapping), use a converter with twice the KW rating of the motor.
.

B.

TYPE 2 Motor Load - American and European made motors:

Use a converter with a KW rating of at least 100% larger than KW of the motor (twice the rating). This load type includes American & European lathes without a clutch, some pumps, blowers, paper cutters, flywheel driven equipment, woodworking saws, dough mixers, meat grinders, motors rated below 1000 RPM, etc.

Note: For instant reversing (as for rigid tapping), use a converter with twice the KW rating of the motor.
.

C.

TYPE 3 Motor Load - Taiwanese, Chinese, Brazilian*, Mexican made, Design  "E" motors and motors starting under load:

This load type includes Design "E" motors, Taiwanese, Chinese, Brazilian*, Mexican motors, machinery starting under load such as pumps, refrigeration compressors, etc., and for any motor which is used for instant reversing, as for rigid tapping. Use a converter with twice the KW rating of the motor.

*NOTE: Some Brazilian motors require sizing the converter 3 times the KW rating of the motor..
.

D.

TYPE 4 Motor Load - Extreme start-up load:

Extreme start-up loads include laundry extractors, hoists, elevators, etc. This type of equipment can be extremely heavily loaded on start-up. Use a converter with three times the KW rating of the motor. Consult Phase-A-Matic, Inc. for the possibility of successfully using a converter sized less than three times larger on these machines.
.

E.

TYPE 5 Motor Load - Hydraulic:

Often hydraulic pumps, which come under a momentary load during use will be loaded well beyond the KW rating of the motor for the brief period of maximum PSI. Examples includes bailers, compactors, paper cutters, shears, pumps, etc. The KW rating of the converter must be at least as high as the actual KW developed by the motor during maximum compression. Size accordingly.

2.

Resistive, Computer, Rectifier & Transformer Loads

Size a minimum KW of 50% larger.

3.

Multiple Motor Applications

The Rotary Converter can run multiple loads simultaneously, but only within certain parameters. RESTRICTIONS APPLY!  Contact Phase-A-Matic, Inc. for consultation.

 

.

      * To download PDF file viewer:

You must have the  Adobe Reader program on your computer. This program is free.

Back to top