MIL Standards: MIL-STD-1275: Characteristics of 28 Volt DC Input Power to Utilization Equipment in Military Vehicles

This standard defines the operating voltage limits and transient voltage characteristics of the 28 VDC electrical power at the input power terminals to the utilization equipment connected to the electrical power distribution system on military ground vehicle platforms.

This standard defines the following requirements:

1) Voltage compatibility which are conditions under which the utilization equipment is expected to operate. Ranges for operational voltage, voltage ripple, initial engagement surge, cranking surges, injected voltage spikes, emitted voltage spikes, injected voltage surges, and emitted voltage surges are outlined.

2) Voltage compatibility verification setup which outlines requirements for environmental conditions, test equipment calibration, nominal voltage, measurement tolerance, measurement reference point, power return, loads, and power supplies.

3) Voltage compatibility verification method which details the requirements for how the EUT is tested for operational voltage range, voltage ripple, initial engagement surge, cranking surges, injected voltage spikes, emitted voltage spikes, injected voltage surges, emitted voltage surges, reverse polarity, electromagnetic compatibility and electrostatic discharge.