MIL-PRF-62368C(AT)
stall without incurring damage, and performance after stall shall remain within specification
limits (see 4.5.8).
3.4.7 Plug reversal. The motor performance shall remain within specified limits after
application of rated voltage of polarity opposite the back electromotive force (emf) while
rotating at any speed up to no-load speed. The speed in either direction shall not be less than that
specified in 3.4.4 and 3.4.5. The following parameters shall apply to the plug reversal
requirements (see 4.5.9).
a) Resistance of switching circuit: 1 ohm (maximum) - excluding gear motor
b) Voltage switching time: 100 milliseconds (ms) (maximum). Typical direction of
switching sequence is CCW-OFF-clockwise (CW). "OFF" switch position connects
both motor leads to ground potential during a minimum interval of 10 milliseconds
(ms).
3.4.8 Duty cycle. The duty cycle shall be as follows (see 4.5.10):
a) On for 2 seconds at 640 oz-in. with rated voltage
b) Reverse drive polarity (plug reversed in accordance with 3.4.7) at rated voltage for a
2 second period with 640 oz-in. load and rated voltage applied
c) Repeat steps (a) and (b) for 30 cycles
3.4.9 Inertia (motor). Inertia of the rotating parts shall be no more than 1.26 pound-inch
squared (lb-in2) (7.65 kilogram-meter square (kg-m2)) at the output shaft (see 4.5.11).
3.4.10 Operating voltage. The motor shall operate over the input voltage range of 18 to
30 V dc with the output as specified in 3.4.2 through 3.4.7, and 3.4.8 inclusive, in direct
proportion to the voltage specified (see 4.5.12).
3.4.11 Insulation resistance. The motor shall have an insulation resistance of not less
than 12 megaohms initially, prior to installation of the electromagnetic interference (EMI) filter
(see 4.5.13).
3.4.12 Dielectric withstanding voltage. The motor shall be capable of initially
withstanding 500 V root mean square (rms), 60 Hertz (Hz) for 1 minute (or 600 V rms, 60 Hz for
1 second) between armature winding and frame, prior to installation of the EMI filter by the
manufacturer. There shall be no breakdown or degradation of insulation (see 4.5.14).
3.4.13 Electromagnetic interference. The motor shall comply with the conducted and
radiated emissions requirements for Army Ground Electrical/Electronic Equipment (see 4.5.15).
3.4.13.1 Conducted emissions. Conducted emissions shall not exceed the values given
in CE102 of MIL-STD-461 (see 4.5.15.1).
3.4.13.2 Radiated emissions. Electric field emissions shall not be radiated in excess of
the limits for Army ground applications in RE102 of MIL-STD-461 (see 4.5.15.2).
5
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business