MIL-PRF-62361E
4.5.8 Plug reversal. To determine conformance to 3.3.1.5, the motor shall be energized
at 30 + 0.1 V dc. With the output shaft rotating at least at rated speed, the motor shall be plug
reversed by applying a voltage of the opposite polarity to that imposed on the motor. At the
conclusion of the plug reversal test, the motor shall be inspected according to 4.5.9.
4.5.9 Duty cycle. To determine conformance to 3.3.1.6, the motor shall be tested
according to 4.5.9.1 or 4.5.9.2.
4.5.9.1 Long cycle. For the first article test, the motor shall be energized with rated
voltage and subjected to the following:
a. Type I and II motors ON for 40 seconds with type III ON for 30 seconds
consisting of the following operations in the order specified:
1. Fifteen seconds transmitting rated torque.
2. Five seconds with maximum driving torque exceeded and the clutch slipping
for type I and II motors.
3. Plug reversal by the application of voltage of the opposite polarity to that
imposed on the motor (see 3.3.1.5).
4. Fifteen seconds transmitting torque in the opposite direction at rated torque
and at least rated speed. For type I and II motors perform steps 5 and 6.
5. While the output shaft is rotating at rated speed with the rated torque load,
plug reversal by the application of voltage of the opposite polarity to that
imposed on the motor (see 3.3.1.5).
6. Five seconds transmitting rated torque.
b. OFF for 30 seconds.
c. Type I and II motors ON for 40 seconds with type III ON for 30 seconds,
consisting of the following operations in the order specified:
1. Thirty seconds transmitting rated torque for type I and II motors. Twenty five
seconds for type III.
2. Five seconds with the clutch slipping for type I and II motors.
3. Plug reversal by the application of voltage of the opposite polarity to that
imposed on the motor (see 3.3.1.5).
4. Five seconds transmitting rated torque in the opposite direction.
d. OFF for 30 seconds.
e. Repeat steps a through d inclusive for 15 cycles.
4.5.9.2 Short cycle. For the conformance test, the motor shall be energized with rated
voltage and subjected to the following:
a. Type I and II ON for 15 seconds with type III on for 10 seconds consisting of the
following operations in the order specified:
1. Five seconds transmitting rated torque.
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