MIL-PRF-22885H
4.7.16.1 Method I. Switches shall be tested in accordance with method 213 of MIL-STD-202. The following
details shall apply:
a.
Test condition: B (75 g's, half-sine).
b.
Measurements during test: Switch contact stability shall be continuously monitored in accordance with
method 310 of MIL-STD-202, test condition A.
c.
Measurement after test: Switches shall be examined for evidence of broken, deformed, or displaced parts.
d.
Mounting: Switches shall be mounted on a rigid metal panel.
4.7.16.2 Method II (when specified). Switches shall be tested in accordance with method 207 of MIL-STD-202.
The following details shall apply:
Measurements during test: Unless otherwise specified (see 3.1), switch contact stability shall be
a.
continuously monitored in accordance with method 310 of MIL-STD-202, test condition E.
b.
Measurement after test: Switches shall be electrically and mechanically operable.
Mounting: The standard mounting fixture shown on figure 207-4A of method 207 of MIL-STD-202 shall be
c.
used.
4.7.17 Acceleration (when specified) (see 3.1 and 3.22). Switches shall be tested in accordance with method 212
of MIL-STD-202. The following details and exceptions shall apply:
a.
Test condition: A.
b.
Acceleration force: 20 G.
c.
The switches shall be monitored for opening of closed contacts and closing of open contacts with a circuit
such as a pilot lamp. Half of the units shall be tested with the actuating means in one position and the other
half of the units shall be tested with the actuating means in an alternate position (see 3.1 and 6.2).
Magnetically held units shall be tested with 80 percent rated dc voltage applied to coils. When testing
momentary action switches, all shall remain in the relaxed position.
4.7.18 Moisture resistance (see 3.23). Switches shall be tested in accordance with method 106 of MIL-STD-202.
The following details and exceptions shall apply:
a.
Mounting: By normal mounting means on a corrosion-resistant metal panel (extending beyond the switch)
positioned 15 degrees from vertical. Half of the units shall be tested with the actuating means in one
position and the other half of the units shall be tested with the actuating means in an alternate position.
When testing momentary action switches, all shall remain in the relaxed position.
b.
Polarization: During step 1 to step 6 inclusive, a polarizing voltage of 100 V dc shall be applied between
current carrying parts and the metal panel. The negative polarity shall be applied to the metal panel. Steps
7a and 7b are not applicable.
c.
Load voltage: Not applicable.
d.
Final measurements: Within 5 minutes after conclusion of the test and while the switches are still wet,
insulation resistance shall be measured as specified in 4.7.23.
e.
Examinations after test: Switches shall be examined for evidence of corrosion, breaking, cracking, or
spalling. Mounting hardware shall be removed at the end of the test.
f.
Distilled or deionized water may be used for this test.
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