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|  MIL-E-7016F
3.5.4.2.16.1 Phase watts - phase vars. These entries are the sum of the
watts and the algebraic sum of the wars in each phase.
Phase VA - phase power factor. Phase VA is the vector sum
3.5.4.2.16.2
of phase watts and phase vars. Phase power factor equals the phase watts divided
by the phase VA, and shall be compatible with the capabilities of the source.
Phase unbalance. This entry equals the maximum phase VA
3.5.4 .2.16.3
minus the minimum phase VA expressed as a percentage of the adjusted source
(see 6.3.1.1) phase VA rating.
Total watts - vars. Total watts is the sum of the watts for each
3.5.4.2.16.4
phase. Total vars is the algebraic sum of the vars for each phase. Total VA is the
vector sum of the total watts and total vars.
DC load summation. For each time interval, the total amperes
3.5.4.2.17
dc shall be entered as shown in Figure 11.
Transient power requirements. Certain equipments, such as
3.5.4.3
motors, solenoids lamps, etc., require starting power in excess of the steady-
state power requirements. For an analysis of transient power requirements, all
probable transient and steady-state loads are combined into a curve of load versus
time. and this curve is command with the system 5-second adjusted capacity for the
In general, transient power requirements
Exceptions: a.
may be disregarded for the time interval
between the start of transient demand and
0.02 second. This generally excludes tran-
sients due to lamp loads. When a peak load
transient drawn by any load, or by simultan-
eously switched loads, is greater than 20
percent of the continuous full load rating of
any one generator, then the complete tran-
sient load curve shall be shown. The curve
shall begin at zero time and continue until
steady state is reached.
b.
Motor starting transients shall be analyzed
as shown in 6.3.6.
c. Possible transients resulting from bus
(multiple load) switching during fault or
emergency conditions may be disregarded
in load and power source capacity analyses,
12
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