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American Rotary Industrial Power
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Maintained by:
americanrotaryco ( 1217 )   
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American Rotary manufactures and distributes static, rotary, CNC, and digital phase converters - the largest selection of phase converters online! American Rotary also distributes transformers, load centers, safety switches, frequency drives, generators, motors, machinery, and much more.
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| GENTEC American
Rotary is the manufacturer and distributor of the largest selection of
phase converters - the only phase
converter company that offers every known type of phase converter - static, rotary, and digital phase
converters. With our tremendous product line and 24/7 technical
support, you can be sure that the phase converter you select from American
Rotary will be the best phase converter for your three phase application.
For more information, please call toll free 1-888-743-6832 or visit www.AmericanRotary.com |
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Static
phase converters are the most economical method to start simple 3-phase
motors on single phase power. |
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- Use with Light to Moderate
Loads Only
- Run 3-Phase motors at
2/3 Rated Horsepower
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Rotary
Phase Converters The GENTEC/Baldor proprietary design
utilizes a custom-balanced soft start three phase generator with power factor
correction and balanced 3-phase output that
will operate 3-phase motors and CNC equipment at 100% the rated horsepower.
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- Run 3-Phase motors at
100% Rated Horsepower
- 5% (or better)
Voltage Balance
- UL Listed Available
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Digital
Solid-State Phase Converters When voltage balance is critical
even under the most demanding overload situations, American Rotary's Phase
Perfect® digital
solid-state phase converters are the only phase converter that offers the precise voltage
regulation of all three lines in any load condition.
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- Run 3-Phase motors at
100% Rated Horsepower
- 1% Voltage balance in
any load condition
- UL Listed - United
States and Canada
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How
to Size a Rotary Phase Converter:
(Please also visit www.AmericanRotary.com)
Sizing a rotary phase
converter can be as simple or as complicated as the application it will run.
The following sizing information can be used as a guideline to help you
determine what size rotary phase converter your application will require.
Please call toll free 1-888-743-6832 for assistance. |
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You must first determine the load type:
Easy
Load - no flywheel, clutch, little resistance/inertia, 1-2 times full
load current on start-up
Medium Load - machine inertia, medium resistance, 3-4 times full
load current on start-up
Hard Load - flywheel, no clutch, Start against load, 5-6 times or
locked rotor current on start-up
Very Hard Load - elevators, hydraulic pumps under continuous load
etc.
Frequent Start - reversing, heavy running loads
CNC - turning
centers, PLC's, EDM, CNC machining
Resistive Load -
heater, transformer, welder, power supply etc.
Single Motor Loads
(Non-CNC, Non-Resistive)
common examples: milling machines, blowers, band saws, lathes, pumps, etc.
1. Determine the load type - Easy, Medium, Hard, or Very Hard (See:
Common Starting Loads)
- Easy Load: Choose the converter HP that is one size
larger than the load.
- Medium Load: Choose the converter size by multiplying
HP by 1.5 and round up.
- Hard Load: Choose the converter size by multiplying
HP by 2.0 and round up.
- Very Hard/Frequent
Start
Load: Choose the
converter size by multiplying HP by 2.5 and round up.
2. Make sure the total running current is no more than 75% of full
load 3-phase current.
3. Go up one extra size for any motors that are foreign, high
efficiency, or have locked rotor currents
that are greater than 6 times full load current.
4. Increase converter size by the ratio of load RPM to 1800 (common
for 2-speed motors).
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Single
Motor Loads (CNC,
Non-Resistive)
common examples: CNC
machining, turning centers, PLC's, EDM, etc.
1. Choose the converter size
by either:
- multiplying HP (of the spindle) by 2.0 for all
standard axis equipment, or
- multiply the machine kW by 2.7, then round up
to the nearest HP converter.
2. Increase size for non-standard equipment (forth axis, bar feeder,
etc.)
2. Make sure the total running current is no more than 60% of full
load 3-phase current.
3. Go up one extra size for any motors that are foreign, high
efficiency, or have locked rotor currents
that are greater than 6 times full load current.
4. Increase converter size by the ratio of load RPM to 1800 (common
for 2-speed motors).
Note: Do not combine other loads with CNC applications unless they are
small compared to the
loads rating.
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Single
Motor Loads
(Resistive)
common examples: heaters,
transformers, welders, power supply, etc.
1. Divide the current rating of the equipment (Use the 230 Volt
amperage of the equipment) by 0.6
2. Round that number up to the nearest full load current of the
converter. This maintains a
5% voltage balance.
Note: If only KW are know, estimate the current by multiplying the kW by
3.75.
kW x 3.75 ~ current (amps)
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Multiple
Motor Loads
common examples: 2 milling
machines, a dust collector and table saw, etc.
Note: Our phase converters are rated
to run multiple machines up to 3X's the rated horsepower of the converter.
If you are considering running multiple machines, please call
1-888-743-6832 for a sizing recommendation. Our engineers and
computer simulation models will determine the correct converter for your
application. Running multiple machines on a single converter is a
common, yet situational scenario where specific conditions must be
satisfied:
- All of the motor loads must be simple
(no resistive, CNC, or hard starting loads).
- All of the motors must be light to
medium loads. These lightly loaded 3-phase motors become a
part of the phase converter system and
assist in generation of the 3rd line.
1. Use the Single Motor Loads formulas to determine the largest
converter needed for each piece of
equipment. Your converter cannot be smaller than
this. For multiple motor starting, size each
piece and add the converter sizes together (this
can usually be avoided).
2. The other equipment (totaling no more than 2 times the rated HP
of the converter) may be started
and run, assuming the loads are not heavy.
Note: Combined motor loads and resistive loads must be sized by
subtracting the resistive current from the full load current rating of the
converter. Combinations exceeding the hp rating of the converter
should be wired using the multiple motor load wiring diagram.
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| Shipping
Rates and Information: |
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| Note:
These rates are for Rotary Phase Converters |
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- Same or Next Day Shipping.
- No penalties for residential delivery.
- Lift gates available for additional charge.
- Canada: Please call 1-888-743-6832 for
rates
- Express and Guaranteed Delivery Available.
Please also visit
www.AmericanRotary.com
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| Size/Area |
Midwest |
East |
South |
West |
| 3HP |
$75
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$75 |
$75 |
$75 |
| 5HP |
$85 |
$85 |
$85 |
$85 |
| 7.5HP |
$95 |
$95 |
$95 |
$95 |
| 10HP |
$100 |
$100 |
$100 |
$100 |
| 15HP |
$110 |
$130 |
$130 |
$130 |
| 20HP |
$120 |
$140 |
$140 |
$140 |
| 25HP |
$125 |
$145 |
$145 |
$145 |
| 30HP |
$135 |
$150 |
$150 |
$165 |
| 40HP |
$150 |
$165 |
$165 |
$175 |
| 50HP |
$165 |
$175 |
$175 |
$180 |
| 60HP |
$175 |
$185 |
$185 |
$195 |
American
Rotary's phase converters are designed to run in series with each other.
This means that if you continue to add 3-phase equipment that eventually
exceeds the capability of your current converter, you can add an
additional converter (or converters) of any size to "boost" your
total available horsepower. In some cases, there may be an energy
savings by using this scenario. Please call our engineering
department toll free at 1-888-7GENTEC if you would like more information
about either of these options.
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