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American Rotary :: > 3 Phase Converters
GENTEC
American Rotary manufactures and distributes the largest 3 phase power
converter selection in the country. Our 3 phase converters are an
excellent solution wherever utility three phase is
not available. The GENTEC/Baldor design utilizes a proprietary soft start
3-phase generator with power factor correction that ensures extremely smooth and
balanced three phase output that will safely and economically operate 3-phase machinery with balanced 3-phase power.
Manufactured in the USA.
Pricing and Specifications >
Sizing
Information > |
(Rubber Isolation Mounts Sold Separately) |
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FEATURES: |
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Rubber
Isolation Mounting Feet:
Protect your phase converter investment for as
little as $19.95/set.
Learn More > |
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Easy
Installation:
View American Rotary's online step-by-step easy
installation pictorial.
Learn More > |
| Integrated
Custom Soft Start: |
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Do
you know.... |
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GENTEC's
proprietary motor-integrated solid state soft-start is built into the
motor/generator housing. Inrush (starting) current is drastically
reduced
by softening the initially required starting torque that is used to spin the
generator. The GENTEC and Baldor
engineering departments worked closely to design our custom
motor/generator specifically to design a phase converter generator that
would minimize the inrush current upon start-up. The
results were so dramatic - an 83% reduction - that the GENTEC/Baldor
motor/generator has been granted a Soft-Start rating.
The GENTEC/Baldor generator design is proprietary and is available only
through American Rotary. Back
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GENTEC
American Rotary takes pride in supporting domestic resources. While
many motor manufactures have taken their production overseas, our custom
phase converter generator is manufactured entirely in the United States. |
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| Protection
by PowerGuard : |
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Better
Business Bureau: |
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| GENTEC American
Rotary
PowerGuardTM
technology is designed to protect your equipment in power failure and
brownouts. When power is restored, the
default "OFF" position on the converter will remain until the operator re-starts the unit.
This mechanism protects any equipment
down the line from the converter that may be lacking built-in power protection.
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Serving
the industry since 1991, GENTEC American Rotary's dedicated team is committed to product excellence and complete customer satisfaction. |
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| Precision
Balanced for CNC: |
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Sizing
Assistance: |
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Each
3 phase converter
is balanced under load and no-load conditions to better than +/-5% which
is essential for CNC
applications. The ISR (Inverter
Spike Resistant) magnet wire utilized in our custom phase converter
generator virtually eliminates spikes common to CNC equipment. ISR wire
makes motors 100 times more
resistant to transient voltage spikes, high frequencies, and short rise
time pulses that are often found in CNC equipment and inverters (VFD's). The use of ISR magnet wire
dramatically extends the life of the
motor/generator. Back
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Our
sizing technicians are available 24/7 to answer your questions and assist
you in sizing a rotary 3 phase converter specific to your specific equipment and application.
Learn
More > |
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| Heavy-Duty
/ Hard-Starting: |
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Have
a Question? |
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| GENTEC
American
Rotary 3 phase converters are rated "Heavy-Duty" making them
ideal for instant motor reversing, tapping, and other hard starting and heavily loaded
applications. Back
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| Flexible
Mounting Options: |
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The
Ultimate in Phase Converter Technology! |
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GENTEC
American Rotary phase converter panels are not mounted directly to
the motor/generator, there are several mounting options for your
convenience. If desired, the motor
generator can be housed in a separate room or structure away from
the control panel.
The control panel can simply be
mounted right alongside existing service. Back
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American
Rotary's digital solid state phase converter delivers 1% voltage balance
under any load condition! This truly is the ultimate phase
converter!
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| Built-In
3-Wire Latching Motor Starter: |
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UL
Listed Phase Converter |
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| GENTEC
American Rotary utilizes a 3-wire latching motor starter to automatically
start the converter at the touch of the "START"
button. Each converter is pre-wired for remote start and time delay.
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American
Rotary offers a UL/CSA listed single to 3 phase converter line to meet
your job requirements..
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| Emergency
Stop: |
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Static
Phase Converter |
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When the converter is powered on and the LED is illuminated, the
"STOP" button is raised for quick shut-off to enhance
operational safety.
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Our
complete line of static phase converters are in stock and ready to ship!
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| Easy
Installation: |
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Why
Are They So Quiet? |
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busbars are safely located in a large compartment just below the
firewall. This simple design eliminates messy wiring and cluttered
conduit boxes. Technical support is available toll free 24/7 to
answer any questions you may have. Our easy to wire 3 phase
converter systems are shipped with a complete instruction manual and 3
phase converter schematic for your
reference. Please click
here to view the installation pictorial online.
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This
informative article describes the different kinds of noise associated with
rotary phase converters, and why American Rotary phase converters are so
quiet! |
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| Expandable
/ Energy Saver System: |
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Better
Business Bureau |
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| GENTEC
American Rotary 3 phase converters can be run in series with one another as is
sometimes necessary. Shops purchase additional equipment and need
to increase the capability of the phase converter. Prior to
GENTEC's development of a soft-start phase converter generator, this
option was often used to reduce energy consumption. Although
less beneficial with the integration of our soft-start
motor/generator, two or more converters can be run in series with
each other for these purposes. Please contact our
toll free technical support line for assistance with these options at
1-888-7GENTEC. Back
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GENTEC American
Rotary is an active member of the Better
Business Bureau and strictly adheres to Truth in Advertising, ethics,
and privacy standards.
View
Report > |
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| Run
Multiple Motors: |
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Have
a Question? |
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GENTEC
phase converters are capable of running up to three times the rated
horsepower of the converter. Please call our technical support line
toll free at 1-888-7GENTEC for assistance with this option. Because
every GENTEC American Rotary phase converter is balanced from a no-load
condition, much smaller motors (with no minimum) can safely be run with
any of our rotary converters. For example, a 2HP mill can run safely
on our 40HP phase converter without damaging the smaller motor, and while still maintaining a properly balanced
voltage. Back
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| The
GENTEC/Baldor Design Advantage |
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Do-It-Yourselfers! |
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industry leaders: GENTEC - the leading OEM phase converter
manufacturer, and Baldor Electric - one of the most well-known and
respected motor manufacturers in the world, have come together to design
this exceptional 3 phase power converter. Our custom Baldor phase
converter generator with integrated soft start and power factor correction
took more than a year to develop and was designed specifically for phase
converter applications and use. Back
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Do
you know how to build a 3 phase converter, and need a resource for
components?
American Rotary has what you need to build a single phase to 3 phase
converter!
See
Selection > |
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GENERAL
SIZING INFORMATION:
Please call toll free
1-888-743-6832 for assistance. |
Determining
the load type of your application is the first step in properly sizing an
American Rotary phase converter. The following are some guidelines
to help you determine the type of load:
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)
Examples: milling machines, blowers, band saws, lathes, pumps, etc.
1. Size according to the load type - Easy, Medium, Hard, or Very
Hard
- For Easy Loads: Choose the converter HP that is one
size larger than the load.
- For Medium Loads: Choose the converter size by
multiplying HP by 1.5 and round up.
- For Hard Loads: Choose the converter size by
multiplying HP by 2.0 and round up.
- For Very Hard/
Frequent
Starting Loads: Choose the
converter size by multiplying HP by 2.5 and
round up.
2. Determine that the total running current is no more than 75% of
full load 3-phase current.
3. Increase converter size by one if there are any motors that are
foreign, high efficiency, or have
locked rotor currents that are larger than 6
times full load current.
4. Increase the 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)
Examples: CNC
machining, turning centers, PLC's, EDM, etc.
1. Determine the converter size by either of the following:
- 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 one size for any non-standard equipment (such as a forth
axis, bar feeder, etc.)
2. Determine that the total running current is no more than 60% of
full load 3-phase current.
3. Increase converter size by one if there are any motors that are
foreign, high efficiency, or have
locked rotor currents that are larger than 6
times full load current.
4. Increase converter size by the ratio of load RPM to 1800 (common
for 2-speed motors).
Note: Be sure not to combine other loads with CNC applications unless they
are small compared to the loads rating. Call technical support toll
free 1-888-7GENTEC for assistance.
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Single
Motor Loads
(Resistive)
Examples: heaters, transformers,
welders, power supply, etc.
1. Divide the equipment current rating (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 to maintain a
5% voltage balance.
Note: If only KW are known, estimate the current by multiplying the kW by
3.75.
kW x 3.75 ~ current (amps)
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Multiple
Motor Loads
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.
Please call 1-888-743-6832 for a sizing recommendation if you are
considering running multiple machines. Our engineers and computer
simulation models will determine a correctly sized converter for your
application. Running multiple machines on a single converter is
common, but specific conditions must be satisfied:
- The motor loads must all be simple (no resistive, CNC,
or hard starting loads).
- The motors must all 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 above 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.
2. The other equipment (totaling no more than 2 times the rated HP
of the converter) may be started,
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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GENERAL
PHASE CONVERTER INFORMATION: |
Phase converters are used to run 3-phase equipment on single phase
power. There are several types of 3 phase converters - rotary,
static and digital solid state, and drive type inverters, or frequency
drives- to name a few. They can all be used to convert single phase
electricity to 3-phase power. They are very commonly used to power
3-phase commercial and industrial grade equipment and electric motors.
Focusing on the most familiar 3 phase power converters, static and rotary,
there are several key differences in the way they work and also in their reliability.
Rotary 3 phase converters are often found in home shops, small commercial
or industrial settings. Rotary phase converters convert single-phase
power into three-phase power at 100% the rated horsepower. It is very cost-effective
to
power three-phase electric motors this way, and they are fairly easy to
install. Phase converters are rated by the maximum
horsepower that they can handle. It is important to verify that
the phase converter is rated for the specific kilowatts (kW) that your
equipment or machine requires. Our technical support team is
available 24/7 to answer any questions you
might have, and to assist you in properly sizing a phase converter to fit your
specific application.
A static phase converter, on the other hand, is very simple to install, but serves only to
start an electric motor. After the motor has started, it continues
to run on only single phase power. The equipment will only be able to run at about 2/3 of the
machinery's available horsepower, and the power is unbalanced. The unbalanced output and
"single-phasing" of a 3-phase motor is hard on 3-phase equipment
and may shorten the life of the motor itself. GENTEC American Rotary
developed a static phase converter to overcome many of the shortcomings of
the typical static phase converter. If you are considering a static
phase converter for your application, please visit the Static
Phase Converter section of our website for more information.
In contrast, a true rotary phase converter produces an electrical current
in all three phases of operation of an electric motor. Because of
the
consistent energy flow, the electric motor will operate at or near its
full horse power capacity. A rotary phase converter is usually recommended
over a static type for this reason alone. Sometimes the power loss isn’t
as significant for an application, and a static converter may be a good
choice. But, if an application requires constant current and full horse power, a
rotary phase converter is definitely indicated.
When working with
electricity and 3 phase power converters, safety is extremely important. Before installing a phase
converter, be sure to follow the local electrical safety codes for your
location. Electrical codes will help you to safely wire 3 phase converter
systems and ensure the
proper operation of your phase converter or electric motor. Any electric
motor should be grounded. Grounding prevents electrical current from
passing through your body when an electrified wire could
come into contact with metal on a phase converter enclosure, electric
motor, or any other equipment. Back
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All
photography herein is protected and may not be altered or duplicated.
Copyright 2007 GENTEC American Rotary
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