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MIL-STD-704 Aircraft Electric Power CharacteristicsThis standard establishes the requirements and characteristics of aircraft electric power provided at the input terminals of electric utilization equipment. MIL-HDBK-704-1 through-8 defines test methods and procedures for determining airborne utilization equipment compliance with the electric power characteristics requirements defined herein. Electromagnetic interference and voltage spikes are not covered by this standard.

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MIL-STD-704F


50 V, 0.0125 sec


50


Note: Steady state limits do not include the disturbances allowed in Table IV


40


29 V, 0.0825 sec


30

29


22


20

22 V, 0.1000 sec


18 V, 0.0150 sec


10

0.000              0.025               0.050              0.075              0.100              0.125               0.150              0.175


Time from Onset of Transient (seconds)


FIGURE 13.  Envelope of normal voltage transients for 28 volts DC system.


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