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|  MIL-E-7016F
interval of that column heading, shall equal the product of the number of units
operating simultaneously during the operating condition, multiplied by the load
requirements per unit, multiplied by the operating time accumulated during the
time interval of that column heading, divided by the time interval.
Formula:
No. of units x load requirements
per unit x operating time
Watts, Vars or Amperes =
Time interval
For continuous analyses,
Watts, Vars or Amperes = NO. of units x load requirements
per unit
If the power drawn by a continuous load varies, the greatest average load for any
5-minute period shallbe entered.
Note:
The load requirements entries made under the "Average
Load" subcolumns concern steady state load requirement
only. Differences appear between entries of load require-
ments for short-time intervals and continuous duty.
These differences are the result of single, intermittent
or cyclic operation of certin loads, and do not consider
starting transients or inrush currents. See 3.5.4.3 for
a discussion of transient analyses.
Time intervals. Three analyses shall be made for each oper-
3.5.4.2.15
ating condition, as follows (see 6.2.5.2):
All loads which last longer than 0.005
a. 5-second analysis:
minute shall be entered in this analysis.
All loads which last longer than five
5-minute analysis:
b.
seconds shall be entered in this analysis.
c. Continuous analysis: All loads which last longer than five
minutes shall be entered in this analysis.
Other time intervals. The time intervals listed above are con-
3.5.4.2.15.1
sidered suitable for most aircraft electric power sources, but on occasion the design
of a particular power source may dictate other time intervals. In such cases, the
correct intervals shall be entered together with justification for any changes. Corres-
ponding power source ratings shall be obtained by test means, or by interpolation
among known ratings, for use in the load and power source comparisons.
Ac load summation. For each time interval, the following shall
3.5.4.2.16
be calculated.
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