Manual 26086 EGCP-2 Engine Generator Control Package
Woodward 117
Droop A reduction in the reference of a controlled parameter as
the amplitude of that parameter increases (negative
feedback). The EGCP-2 uses Kilowatt Droop as a
manual means of loading the generator when paralleling
to another generator, or to the mains. Droop Control is
effective only if the LOAD CONTROL MODE setpoint in
the Configuration menu is set to DROOP.
Dwell Time A term used to describe the amount of time required
during synchronization in which one power source is
within a specified phase angle window of another source
it is synchronizing to.
Hard Shutdown A shutdown condition used by the EGCP-2 for various
alarm settings which will cause the unit to immediately
open its generator breaker if on load, and shut down
when reaching or exceeding the alarm parameters.
Isochronous A term which is used to describe a generator set which
will maintain its frequency at a constant level as the load
on that generator changes. The EGCP-2 typically uses
Isochronous load control when in load sharing, or when
operating as a single unit. This assures a constant
frequency under all generator loads which are within the
capacity of the generator.
Inverse Time Delay A time delay used for over current and reverse power
detection which utilizes both time and amplitude of the
condition to determine the active trip level. The inverse
time delay accounts for rapid high amplitude conditions
to cause a trip, as well as long duration low amplitude
conditions.
Isolated Bus A bus which is electrically isolated from the mains.
KVA Kilovolt Amps. The power rating of the generator set
KVA is determined by multiplying the rated voltage of the
generator by the rated current.
KVAR Kilovolt Amps Reactive. Reactive load is produced by a
phase angle differential between the volts and the amps
of the generator. KVAR can either be a product of
inductive or capacitive loads when operating on an
isolated bus, or can be produced by the generator when
operating in parallel with another power source such as
the mains.
KW Kilowatts. The Watts are the product of the voltage of
the generator and the current which is produced within
the voltage cycle. KW load is resistive in nature.
Load Typically the KW load on the generator at any given
time.
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