3
phase power is used today for many
applications ranging from the above grain dryer to saw
mills, conveyer belt systems, refrigeration and air
conditioning, etc.
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3 Phase Contents |
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To Buy 3
Phase Frequency Converters
We Recommend TEMCo Brand.
Call 1-510-490-2187
Web Link:
Frequency Converters |
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3
Phase Power Frequency Including 50 Hz, 60 Hz and 400 Hz
and others.
Power Frequency refers
to how many times the wave form will repeat the cycle
per second.
The
most common utility frequency is the frequency
at which alternating
current (AC)
is transmitted from a utility company power
plant to the
end
user.
In most parts of the Americas
(North and South),
it is typically 60 Hz,
and in most parts of the rest of the world it is
typically 50 Hz.
Most
places
that use the 50 Hz frequency tend to use
220/230 voltage,
and those that use 60 Hz tend to use
110/120 V.
Other
utility frequencies are used for specialized purposes
and in other countries as a standard. The countries
Germany, Austria, and Switzerland use a traction
power network
for railways, distributing single-phase AC at 16.7
Hz. A frequency of 25 Hz was
used for the German railway Mariazeller
Bahn and some railway systems in New York and Pennsylvania (Amtrak)
in the USA.
Frequencies
as high as 400 Hz are used in aerospace
and some special-purpose computer power supplies and
hand-held machine tools. Such high frequencies cannot
be economically transmitted long distances, so 400 Hz
power systems are usually confined to the building or
vehicle.Power
Frequency (Hz) Can Be Changed with a Frequency
Converter
Frequency
Converters, also known as Motor Generator Sets (MG
Sets), are used for converting either 50 Hz, 60 Hz, or
400 Hz, utility line power to 50 Hz, 60 Hz or 400 Hz
power to run equipment. In addition to this some
frequency converter manufacturer's, namely TEMCo,
Frequency Converter MG Sets also offer line isolation,
harmonic cancellation, power factor correction, phase
conversion, voltage conversion with balanced, smooth,
controlled power output. Typical applications include
AC variable speed drives, inverters, computers and
computer controlled equipment, deep well pumps,
industrial machinery, ships, aircraft, military
computers and many more.
Click here to read more about Frequency
Converters.
3
Phase Power Wave Form
One
voltage cycle of a 3-phase system, labeled 0 to
360° ( 2 π radians) along the time axis.
The plotted line represents the variation of
instantaneous voltage (or current) with respect
to time. This cycle will repeat 50 (50Hz) or 60
(60Hz) times per second, depending on the power
system frequency. |
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Common
Frequency Converter Configurations Include:
50 Hz or 60 Hz Input
50 Hz, 60 Hz, or 400 Hz Output
120 Volts through 600 Volts Input
120 Volts through 600 Volts Output
1 or 3 phase Input
1 or 3 phase Output
6 kW through 200 kW
Variable
Frequency Drives Used To Control Motor Speed:
Variable Frequency Drives and
Soft Start Drives are not actually used to change
power frequency, but instead are used to control motor
speed for applications that need a motor to speed up
or slow down. If you need to change power
frequency see above for Frequency Converters.
3 Phase
Power Is More Efficient Than Single Phase
Three phase electricity powers large industrial loads more
efficiently than single-phase electricity. When
single-phase electricity is needed, It is available
between any two phases of a three-phase system, or in
some systems , between one of the phases and ground.
By the use of three conductors a 3 phase system can
provide 173% more power than the two conductors of a
single-phase system. Three-phase power allows heavy
duty industrial equipment to operate more smoothly and
efficiently. 3 phase power can be transmitted over
long distances with smaller conductor size.
Continue
And Read About Additional 3 Phase Power Details:
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