MIL-PRF-11021H
4.6.15.2 Main switch test. The auxiliary switch shall be placed in the "DIM" position.
The main switch shall be subjected to the following cycling procedure at a rate of not less than
5 cycles per minute (cpm). One cycle shall consist of the following sequence:
a. With the main switch in the extreme left position (blackout drive), press the
interlock lever and move the main switch lever through each position to the
extreme right position (service drive), remaining in each position for 1 second;
and
b. Release the interlock lever and return to the blackout marker position without
stopping, then press the interlock lever to return to the blackout drive position.
The main switch shall be operated for 50,000 cycles as follows:
Number of cycles
Ambient temperature
180 + 5°F
15,000
80 + 10°F
20,000
-65 + 5°F
15,000
4.6.15.3 Auxiliary switch test. The main switch shall be placed in the "SERVICE
DRIVE" position. The auxiliary switch shall be subjected to the same cycling rate, duration,
ambient temperature, and number of cycles as the main switch in 4.6.15.2. One cycle for the
auxiliary switch shall consist of moving the auxiliary switch levers from the "OFF" position to
the "PANEL BRIGHT" position, back through the "OFF" position to the "PARK" position, and
returning to the "OFF" position.
4.6.16 Dielectric strength test. To determine conformance to 3.4.16, the auxiliary and
main switch levers shall be placed in the "OFF" position and 1000 volt RMS at 60 cycles per
second (cps) shall be applied in accordance with MIL-STD-202, Method 301, between each pair
of terminals, excepting pair H and M. The same voltage shall also be applied between terminals
and grounds. The voltage shall be applied for 1 minute in each position. Switch shall be
disassembled and examined. There shall be no evidence of charring, cracking, arcing, rupturing,
or other damage.
4.6.17 Switch lever position test. To determine conformance to 3.4.17, the switch lever
shall be rotated to each of the specified index positions. To determine the location of the index
position, the switch levers shall be subjected to the test as specified in 4.6.18. The angular
difference between the center of the switch lever and the index mark shall be within 5° of the
index marks.
4.6.18 Switch lever indexing test. To determine conformance to 3.4.18, the total angular
displacement of the lever resulting from the application of a clockwise and counterclockwise
torque of 0.10 + 0.01 lb-ft (0.14 + 0.014 N-m) shall be measured at each specified index
position. Movement shall not exceed 5 degrees.
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