MIL-PRF-62368C(AT)
3.4.14.1.2.4 Spikes. All spikes resulting from system operation shall fall within the loci
shown in figure 5.
3.4.14.2 Non-operating.
3.4.14.2.1 Battery only condition.
3.4.14.2.1.1 Steady-state voltage. Circuit steady-state voltage shall be between 20 and
27 V.
3.4.14.2.1.2 Ripple. The upper and lower peaks of ripple (see figure 1) shall each be less
than 2 V. The frequency components of the ripple shall be within the range 50 Hz to 200 kHz.
3.4.14.2.1.3 Spikes. All spikes resulting from system operation shall fall within the loci
shown in figure 3.
3.4.14.2.1.4 Starting disturbances. Fully charged battery shall be used (battery drawing
less than 5 A from a 28 V charging source with electrolyte temperature between 81 °F and
100 °F (27 °C and 38 °C)).
3.4.14.2.1.4.1 Initial engagement surges. During this disturbance, the voltage shall not
fall below 6 V and the duration shall not exceed 1 second.
3.4.14.2.1.4.2 Cranking level. The steady voltage during cranking shall not be below
16 V (no more than 3 cranking attempts of 30 seconds each with 2-minute cranking level pauses
between attempts).
3.4.15 Environmental.
3.4.15.1 Temperature.
3.4.15.1.1 High (operating). The motor shall meet the performance requirements
contained herein when operating at a high ambient temperature of +140 °F (+60 °C)
(see 4.5.17.1.1).
3.4.15.1.2 High (non-operating). The motor shall not be damaged nor performance
impaired after extended exposure at a temperature of +160 °F (+71 °C) (see 4.5.17.1.2).
3.4.15.1.3 Low (operating). The motor shall meet the performance requirements
contained herein when operating at a low ambient temperature of -25 °F (-32 °C)
(see 4.5.17.1.3).
3.4.15.1.4 Low (non-operating). The motor shall not be damaged nor performance
impaired after extended exposure at a temperature of -65 °F (-54 °C) (see 4.5.17.1.4).
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