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American Rotary :: > Three Phase Converters
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Three Phase Converter...
Run 3-Phase Equipment from 1-Phase Power
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GENTEC
American Rotary manufactures and distributes the largest three phase power
converter selection online. Our three phase converters are indicated
wherever utility three phase isn't available. Our custom converter
designed by GENTEC and Baldor utilizes a custom soft start three phase generator with power factor correction
that ensures extremely smooth and
balanced three phase output that will operate 3-phase machinery safely and
economically 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 step-by-step easy
installation pictorial online!
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 right in o the
generator housing. Starting (inrush) current is reduced
drastically by softening the initial starting torque used to spin the
generator. The GENTEC and Baldor
engineering departments designed our motor/generator as a
phase converter generator that could minimize the inrush current
upon start-up. The result was an 83% reduction! These
results gave the GENTEC/Baldor motor generator 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. Many motor manufactures have
moved their production overseas. Our custom three phase converter generator is manufactured
100% in the United States! |
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| Protection
by PowerGuard : |
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Better
Business Bureau: |
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PowerGuardTM
technology is designed to protect your equipment in power failure and
brownouts. Even when the power is restored, the converter will
remain in the default "OFF" position until an operator starts the
unit again. Any equipment
down the line from the converter that may be lacking built-in power
protection is protected by this technology. Back
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Serving
the industry since 1991, GENTEC American Rotary's team is dedicated to product excellence and
total customer satisfaction. |
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| Precision
Balanced for CNC: |
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Sizing
Assistance: |
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Each
single phase to three phase converter
is balanced under load and no-load conditions to better than +/-5% (essential for CNC
applications and more than adequate for heavy-duty applications). Inverter
Spike Resistant, or ISR, magnet wire is utilized to virtually
eliminate spikes common to CNC equipment. Motors wound with IST are 100 times more
resistant to transient voltage spikes, high frequencies, and short rise
time pulses (common to CNC equipment, inverters, and VFD's). ISR magnet wire extends the life of the
motor/generator. Back
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Our
technicians are available 24/7 to answer your hardest questions and assist
you in sizing a three phase electric converter specific to your 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 single phase to three phase converters are rated industrial "Heavy-Duty"
- making them
ideal for instant motor reversing, tapping, and other hard-start and
heavy-load equipment. Back
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| Flexible
Mounting Options: |
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The
Ultimate in Phase Converter Technology! |
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phase converter panels offer several mounting options for your
convenience. The motor
generator can be housed anywhere - even 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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GENTEC
American
Rotary's solid state digital phase converters deliver a 1% voltage balance
under any load condition! Truly - 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 converters are wired with a 3-wire latching motor starter
that automatically starts the converter at a simple touch of the "START"
button. Each converter is pre-wired for remote start and time delay.
Back
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GENTEC
American Rotary's Phase
Perfect®
digital single to three phase converter line is UL/CSA listed and meets
all "new construction" code requirements.
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| Emergency
Stop: |
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Static
Phase Converter |
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"ON" and the LED is illuminated, the
"STOP" button is raised for emergency shut-off and enhanced
operational safety. Back
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GENTEC
American Rotary's complete line of static phase converters are in stock and ready to ship!
Learn More > |
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| Easy
Installation: |
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Why
Are They So Quiet? |
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| Busbars
are conveniently and safely located in a roomy compartment just below the
firewall. This simple and proven design eliminates messy wiring and cluttered
conduit boxes common to many phase converters. Trained technical
support representatives are available toll free 24/7 to answer any questions you may have.
Our easy to wire three phase converter systems are shipped with a complete instruction manual
and three phase power converter schematics for your
reference. Back
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This
informative article describes the different kinds of noise associated with
a typical three phase rotary converter, 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 phase converters can be run in series with one another.
As growing shops purchase additional equipment, it may become necessary increase the capability of the phase converter.
Prior to GENTEC's development of a soft-start phase converter generator,
this option was also used to reduce energy consumption. Although
less beneficial as a power saving technique with the integration of our soft-start
motor/generator, two or more converters can still be run in series with
each other for these purposes. Please be sure to 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 a proud 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 -
a respected OEM phase converter manufacturer, and Baldor Electric - one of the
most well-known motor manufacturers in the world, have come together in
the design of our exceptional three phase power converter. The integrated soft start Baldor phase
converter generator with power factor correction
took over a year to develop and was designed especially for phase
converter applications. Back
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Do
you know how to build a single to three 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 GUIDELINES:
Please call toll free
1-888-743-6832 for assistance. |
The
load type of your application must first be determined when properly
sizing an American Rotary phase converter. The following are some
guidelines to assist you in determining the load type of your equipment:
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 to the load type by the following formulas:
- Easy Loads: Choose the converter HP that is one size
larger than the load.
- Medium Loads: Choose the converter size by
multiplying HP by 1.5 and round up.
- Hard Loads: Choose the converter size by multiplying
HP by 2.0 and round up.
- Very Hard/
Frequent
Starting Loads: Choose the
converter size by multiplying HP by 2.5 and
round up.
2. Check that the total running current is no more than 75% of full
load 3-phase current.
3. Increase the converter size by one if there are foreign or high
efficiency motors, or motors that
have locked rotor currents 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).
Back
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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 formulas:
- 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 the converter by one size for any non-standard equipment
(such as an additional axis, bar
feeders, etc.)
2. Check that the total running current is no more than 60% of full
load 3-phase current.
3. Increase the converter size by one if there are any motors that
are foreign, high efficiency, or have
locked rotor currents 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).
Note: Typically, you do 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.
Back
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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 the resulting number up to the nearest full load current of
the converter to maintain a
5% voltage balance.
If only KW are known, estimate the current by multiplying the kW by
3.75.
kW x 3.75 ~ current (amps)
Back
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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.
Back
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GENERAL
PHASE CONVERTER INFORMATION: |
Phase converters are used to run equipment that requires three phase from
single phase power. Several types of 3 phase converters can be found
in the marketplace today - rotary, static and digital solid state, and
drive type inverters, or frequency drives - to name a few. All can be used to
obtain 3-phase power from single phase
electricity. They are commonly found powering three phase commercial and industrial-grade equipment and electric motors.
The most familiar three phase power converters, static and rotary, have a
few key differences in the way they work that also effects their reliability.
Rotary three phase converters are often found in home and hobby shops,
farms, small industrial and commercial settings, and other places that are
off the three phase power grid. Rotary phase converters convert single-phase
power into three-phase power at 100% the rated horsepower. It is
extremely cost-effective to
power three-phase electric motors this way, and they are fairly easy to
install. Phase converters are typically rated by the maximum
horsepower that they can maintain. It is important to verify that a
particular phase converter is rated for the kilowatts (kW) required by your
equipment or machine. Our technical support staff is
available 24/7 to answer any questions you may have, and assist you in properly
sizing the correct phase converter to fit your
specific application.
The other type - the static phase converter - is very simple to install
and relatively inexpensive, but serves only to
start an electric motor. Once the motor has been started, it will
continue to run on only single phase power. The equipment is only be able to run at about
two-thirds of the machine's available horsepower, and the power is not
balanced. The unbalanced output and
"single-phasing" of 3-phase motors is hard on 3-phase equipment
and may ultimately shorten the life of the motor itself. GENTEC
American Rotary's static phase converter was designed 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.
A true rotary phase converter, by contrast, 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 often chosen over a static type for this reason alone.
Sometimes the power loss isn’t a major concern to an operator, and a static converter
can be good choice. But, if an application requires constant current and full horse power, a
rotary phase converter is definitely indicated.
As always, when working with
electricity and three phase power converters, safety is extremely
important! Before installing a phase
converter, be sure to follow the local and national electrical safety codes for your
location. Electrical codes will help you to safely wire three 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 if an electrified wire were to come into contact with metal on a phase converter enclosure, electric
motor, or 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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