MIL-PRF-22885H
4.7.5 Contact bounce (when specified) (see 3.10). The switch shall be connected to a test circuit in accordance
with figure 3. The switch shall be mechanically operated at a velocity 6 inches ±2 inches (152.4 mm ±50.8 mm) per
second. The contacts under test shall be closed five times and the duration of the contact bounce shall be monitored.
The duration of the contact bounce shall be defined in accordance with figure 4. Any contact bounce which exceeds
the maximum value specified shall constitute failure (see 3.1). The test shall be repeated until all sets of contacts
have been measured for contact bounce.
4.7.6 Operating characteristics (see 3.11). Switches shall be measured for operating characteristics in accordance
with the applicable requirements (see 3.1).
4.7.7 Coincidence of operating and releasing points (when specified) (applicable to multipole switches) (see 3.12).
Coincidence of operating (releasing) points of all poles of a multipole switch shall be determined with suitable
indicating circuits. The switch shall be rigidly held in a suitable fixture allowing the actuator to be moved in its
intended manner. The actuator shall be advanced and retracted slowly and uniformly with no external vibratory
influence while passing through the operating and releasing points, at a rate not exceeding .001 inch (0.025 mm) or 1
degree per second.
4.7.8 Permanency of marking (when specified) (see 3.13). Switches shall be tested in accordance with method
215 of MIL-STD-202. The following details shall apply:
a.
Portion of switch to be brushed: Brush strokes of each solvent solution shall be evenly divided between
required identification, terminal, and circuit schematic markings.
b.
Mechanical or electrical damage: Not applicable.
4.7.9 Terminal strength (see 3.14). Switches shall be mounted by their normal mounting means. The switches
shall be examined after the test for evidence of breakage, loosening of terminals, or damage to the body of the
switch. A circuit, such as a pilot light, shall be used to monitor for short circuiting during the test. No terminal shall be
tested in more than one direction.
4.7.9.1 Screw terminals. Screw terminals shall be subjected to the tests specified in 4.7.9.1.1 and 4.7.9.1.2.
4.7.9.1.1 Pull. The terminals shall be tested in accordance with method 211 of MIL-STD-202. The following
details and exceptions shall apply:
a.
Test condition: A.
b.
Direction of the pull: Along the axis of the terminal screw, perpendicular to the axis of the terminal screw,
and in the direction most likely to cause failure.
Static force: See table XIII.
c.
4.7.9.1.2 Torque. Terminals of the switches shall be tested in accordance with method 211 of MIL-STD-202. The
following exception shall apply: Test condition: E, except that for thread size 10-24, the torque shall be 24.0 pound-
inches.
4.7.9.2 Solder terminals. Switches shall be tested in accordance with method 211 of MIL-STD-202. The following
details and exceptions shall apply:
a.
Test condition: A.
b.
Applied force: 5 pounds.
c.
Direction of force: Parallel to the long axis of the terminal, perpendicular to the long axis of the terminals,
and in the direction most likely to cause failure.
20
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business