MIL-HDBK-1004/5
APPENDIX B
ANALYSIS OF 400-HERTZ
LOW VOLTAGE DISTRIBUTION SYSTEM
Section 1:
VOLTAGE DROP CALCULATIONS
1.1
General. This section is devoted to determining voltage drops for
400-Hz low voltage distribution systems. The circuit diagram and formulas
presented in Figure B-1 will be used in this section for determining system
voltage drops.
Figure B-2 illustrates a typical 400-Hz distribution system which
will be used as the bases for determining the appropriate size of low voltage
feeder and frequency converter.
A simplified block diagram with the equipment and cable parameters
are presented in Figure B-3 for the system shown in Figure B-2. Figures B-4
and B-5 illustrate the calculations based on the parameters given in Figure B-
3.
Tables B-1 through B-12 are reprinted from "Actual Specifying
Engineer," February 1972. These tables give the effective A.C. resistance and
inductance values for both copper and aluminum conductors for various
insulations and routing medians.
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