MIL-STD-1399-3008
ELECTRIC POWER SYSTEM
INTERFACE 1
60-Hz
Power Panel
USER EQUIPMENT
2
Automatic
Bus
Transfer
Conversion Equipment
400-Hz
User Equipment
Such as 60-Hz Motor
Device
To Emergency
Generator
Switchboard
Power Panel
60-Hz
Generator
Power Conversion Equipment
To Remote 60/400 Hz
Conversion Equipment
2
400-Hz
To Various Cabinets in System
User Equipment Such as Gun/Missile
450 Volt
60 Hz
Alternate
Power Source
Switchboard
Manual
Transfer
60/400 Hz
Equipment Cabinet
60-Hz
Generator
Equipment
User Equipment Such as Radio Transmitter
450 Volt, 60-Hz
Ship Service Swbd
Automatic Bus Transfer Device
To Remote 60/400 Hz
Conversion Equipment
2
I. C. Switchboard
To Various Cabinets in System
User System Such
NOTES:
To Emergency
Generator
as I.C. System
Typical Power System Characteristics: Voltage, Frequency, and Emergency Condition
Typical User Equipment Constraints: Type of Power, Power Factor, Power Interruption, Grounding, Load
Unbalance, Pulsed Loads, Input Current Waveform, and Surge/Inrush Current
1/ Refer to 1.3 for a description of the interface.
2/ Cables with power/lighting designations.
FIGURE 1. Typical interface of electric power system and user equipment.
2
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