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Heavy Duty Roto-Phase II

Rotary Roto Phase Converter Heavy

This unit has a greater capacity than any rotary converter made. The reason for the larger horsepower capacity of this unit is due to the increase in physical size.   The heavy duty converters are substantially larger in comparison than our competitor's units which are listed at a heavy duty rating. This allows the converter to capability of starting motors that are "hard starting" or operating more three phase motor load. When using this series of converter with "high efficiency" motor loads, please consult factor.

Model Largest Motor
HD-2 2
HD-3 3
HD-5 5
HD-7
HD-10 10
HD-15 15
HD-20 20
HD-25 25
HD-30 30
HD-40 40
*HD-2P 50
*HD-2S 60
*HD-3P 75
*HD-4P 100
* Paralleled Units

The Heavy Duty Roto-Phase Design IS the top of the line in the rotary phase converter industry. The Heavy Duty design is capable of handling the tough jobs, such as: GRAIN DRYERS, FERTILIZER MIXERS, DOUGH MIXERS, REFRIGERATION COMPRESSORS, WELDERS, AIR COMPRESSORS, RESISTIVE LOADS, as well as multiple inductive motor loads. The largest motor horsepower rating is in true horsepower and is not intended to operate mis-rated motors or motor loads. The Heavy Duty Roto-Phase is designed to operate ONE or TWO motors equal to the largest motor rating, plus smaller motors to obtain the total horsepower capacity. Where TWO motors match the largest motor rating, be sure motors' starting cycle are at separate times. Where TWO motors match, AND start simultaneously, choose the Roto-Phase largest motor category matching the starting horsepower of the application. The Roto-Phase name stands for more than Quality, Performance, and Dependability...it stands for Service and Technical Support. The converter industry has changed dramatically, and requires skilled knowledge of three-phase equipment along with technical support only available from ARCO Electric. WE SET THE STANDARDS OTHERS STRIVE TO MEET.

Model Notes:

* Paralleled Units

  • O.D.P. or T.E.F.C. Design Available.
  • Total horsepower capactiy may reach 3 to 4 times the larges motor HP catagory.
  • Specify 230 VAC or 460 VAC.
  • Larger models available, consult factory.
  • Refrigeration Equipment/Welders are sized by FLA/INPUT Amperes, consult factory.
  • CAUTION: For foreign motor designs, 2-speed windings, instant reverse applications, consult factory.
Rotary Roto Phase Converter Diagram

Roto-Phase Accessories from ARCO

  • Magnetic Starters
  • Fuses
  • Disconnects
  • Motor-Servers
  • Items sold separately or as a package with Heavy-Duty Roto-Phase Models.
SPECIFICATIONS: Approx.
Ship Wt.
Models A B C E F L M O P CC DD OO TT
HD2 8.50 6.50 12.00 3.75 2.750

8.25 7.75 3.875 6.25 12.00
85
HD3 9.50 8.00 13.75 4.25 3.500

10.06 9.56 4.780 8.00 15.56 2.375 135
HD5 11.24 10.07 16.25 5.00 4.120 9.40 6.56 12.53 12.56 6.280 8.00 20.56 3.000 200
HD7 11.24 11.57 17.50 5.00 5.000 10.15 7.31 12.53 12.56 6.280 8.00 20.56 3.000 220
HD10 12.58 12.94 32.50 6.50 5.500 9.84 9.84 14.64 13.75 6.875 8.00 21.75 1.930 390
HD15 14.56 13.44 32.50 6.25 6.000 10.28 10.28 16.64 15.75 7.280 8.00 23.75 1.930 460
HD20 14.56 14.94 32.50 6.25 6.000 11.03 11.03 16.64 15.75 7.280 8.00 23.75 1.930 550
HD25 16.19 14.12 32.50 7.00 5.620 11.16 11.16 18.44 17.31 8.095 8.00 25.31 3.140 800

Dimensions given are not certified.
Case size and shipping weights are subject to change without notice.
ARCO Electric reserves the right to make product changes without prior notice.
Specify 230 V or 460 V. Orders placed without specified voltage 230 will be used.

How to Specify:

For Manual Models: "3-Phase motors shall be powered from a single phase source by a multimotor rotary phase converter (single to three phase) equal to ARCO Roto-Phase Model: _____, Voltage: _____, as manufactured by ARCO Electric Products Shelbyville, Indiana with a 5-year warranty or approved equal."

Contact ARCO

Home Office:
2325 E. Michigan Road
Shelbyville, IN 46176-3400
Toll Free: 800-428-4370
Direct: 317-398-9713
Fax: 317-398-2655
Location Manager:
E-Mail: Hal Pike
Sales Manager:
E-Mail: Tim Drake