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GLOSSARY
This is the voltage of a power source when it has no load applied to it. It can also
be called “nominal voltage” as the voltage expressed is usually a guideline
voltage.
This is the voltage of a power source when a load has been applied to it. As a
load is applied to the power source, the resistance of the line is easier to
examine. When a voltage-measuring device such as a multimeter is used during
operation of the machine, you can clearly see that the voltage drops as soon as a
load is applied and rises back when the load is taken off.
Pigtails are plug ends with unfinished bare wire on one end used for hooking up
to panels. Pigtails are used when the source power is unknown, when connecting
to the power grid of an unfinished building that has no power receptacles, and
when running certain generators. Many pigtails are available or can be made up
by an electrician.
Rear pivoting assembly.
Vinyl composition tile.
A variable-frequency drive (VFD) is a system for controlling the rotational speed
of an alternating current electric motor by controlling the frequency of the
electrical power supplied to the motor. A variable frequency drive is a specific
type of adjustable-speed drive. Variable-frequency drives are also known as
adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives,
microdrives, or inverter drives. Because the voltage is varied along with
frequency, these are sometimes also called variable voltage variable frequency
(VVVF) drives.
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