MIL-STD-704F CONTENTS
PARAGRAPH PAGE
4. GENERAL REQUIREMENTS ......................................................................................... 5
4.1 Aircraft electric power system requirements ......................................................... 5
4.1.1 Aircraft electric power system performance .......................................................... 5
4.1.2 Electric power source characteristics ..................................................................... 5
4.1.3 Protective devices .................................................................................................. 6
4.2 Aircraft utilization equipment requirements .......................................................... 6
4.2.1 Power compatibility ............................................................................................... 6
4.2.2 Operation ................................................................................................................ 6
4.2.2.1 Normal operation ................................................................................................... 6
4.2.2.2 Abnormal operation ............................................................................................... 6
4.2.2.3 Transfer operation .................................................................................................. 6
4.2.2.4 Emergency operation ............................................................................................. 6
4.2.2.5 Starting operation ................................................................................................... 6
4.2.3 Power failure .......................................................................................................... 7
4.2.4 AC power utilization .............................................................................................. 7
4.3 External power source requirement ....................................................................... 7
4.4 Test requirements ................................................................................................... 7
5. DETAILED REQUIREMENTS ........................................................................................ 7
5.1 Transfer operation characteristics .......................................................................... 7
5.2 AC power characteristics ....................................................................................... 7
5.2.1 Type system ........................................................................................................... 7
5.2.2 Phase sequence ....................................................................................................... 8
5.2.3 Normal operation ................................................................................................... 8
5.2.4 Abnormal operation ............................................................................................... 8
5.2.5 Emergency operation ............................................................................................. 8
5.3 DC power characteristics ....................................................................................... 8
5.3.1 Type system ........................................................................................................... 8
5.3.2 28 volts DC system ................................................................................................ 8
5.3.2.1 Normal operation ................................................................................................... 8
5.3.2.2 Abnormal operation ............................................................................................... 8
5.3.2.3 Emergency operation ............................................................................................. 9
5.3.2.4 Electric starting ...................................................................................................... 9
5.3.3 270 volts DC system .............................................................................................. 9
5.3.3.1 Normal operation ................................................................................................... 9
5.3.3.2 Abnormal operation ............................................................................................... 9
5.3.3.3 Emergency operation ............................................................................................. 9
5.4 Load characteristics ............................................................................................... 9
5.4.1 Grounding .............................................................................................................. 9
5.4.2 Load unbalance ...................................................................................................... 9
5.4.3 Power factor ........................................................................................................... 9
5.4.4 Polarity or phase reversal ....................................................................................... 9
5.4.5 Multiple input terminals ......................................................................................... 9
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