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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


160


152.0 V; 0.0083 sec



140

130.0 V; 0.0167 sec


125.0 V; 0.1000 sec




120


115

125




100

105



105.0 V; 0.1000 sec


80


60                                       70.0 V; 0.0167 sec


40

31.0 V; 0.0083 sec


20


Notes:

1. Voltage may go to zero potential during bus transfers

2. Steady state limits do not include the disturbances allowed in Table lll.



0

0.000              0.025              0.050              0.075              0.100              0.125              0.150              0.175


Time from Onset of Transient (seconds)


1 cycle @ 60 Hz


½ cycle @ 60 Hz


FIGURE 8.  Envelope of normal 60 Hz voltage transient.


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