MIL-DTL-13484G
4.6.3.3 Lead connections. To determine conformance to 3.4.3, the switch shall be held in a vise and
a force of 110 N shall be applied to each connecting lead so that the tensile force is transmitted to the
point where the lead is connected to the switch body. The force shall be applied both in the direction of
the center axis of the switch and perpendicular to the center axis.
4.6.3.4 Physical characteristics. To determine conformance to 3.4.4, the switch shall be mounted as
in intended operation. The force required to actuate it in the region specified in 3.4.4 shall be measured.
Subsequently, the release force, release time, pretravel, overtravel, and movement differential shall be
measured.
4.6.4 Electrical tests.
4.6.4.1 Current rating. To determine conformance to 3.5.1, the switch shall be mounted as in
intended operation and the current rating measured under lamp load, inductive load, and resistive load.
4.6.4.2 Contact voltage drop (see 6-6). To determine conformance to 3.5.2 and to the contact
voltage drop requirement of 3.5.2, the switch shall be subjected to the test specified in 4.6.4.2.1 or
4.6.4.2.2, as applicable. The switch shall be subjected to the nondestructive test specified in 4.6.4.2.1 if
the switch is subsequently to be subjected to any of the teats specified in 4.6.5.1 through 4.6.5.3 (see
table I and 4.5) or when the switch is being subjected to acceptance tests (see 4.5.3). Otherwise the
4.6.4.2.1 Nondestructive test. The switch shall be connected to a rated resistive load current of 15
amperes. The voltage drop shall be measured between the ends of each appropriate pair of leads with
the contacts in the corresponding closed position. The contact voltage drop shall be estimated by
subtracting the product of 5 millivolts per inch times the total length in cm of the two conductor leads, from
the voltmeter reading in millivolts.
4.6.4.2.2 Destructive test. The switch shall be connected to a rated resistive load current of 15
amperes. A point shall he located on each lead 10 mm ± 5 mm from the body of the switch. The leads
shall be punctured as necessary and the voltage drop measured between each appropriate pair of points
defined above, with the contacts in the corresponding closed position.
4.6.4.3 Overload capacity. To determine conformance to 3.5.3, the switch shall be subjected to 100
make and break cycles while being subjected to a rated resistive load current of 22.5 amperes.
4.6.4.4 Insulation resistance. To determine conformance to 3.5.4. the insulation resistance shall be
measured between the ends of each appropriate pair of leads, with the contacts in the corresponding
open position, in accordance with MIL-STD-202, method 302, test condition C.
4.6.4.5 Open circuit resistance. To determine conformance to 3.5.5, the open circuit resistance shall
be measured between each appropriate pair of leads, with the contacts in the corresponding open
position, using a suitable ohmmeter.
4.6.4.6 Endurance. To determine conformance to 3.5.6, one-half of the switches to be tested shall
be connected to a rated inductive load current of 7.5 amperes. The remainder of the switches to be
tested shall be connected to a rated lamp load current of 7.5 amperes. Bach loaded switch shall be
operated for 25,000 make and break cycles. During the test, each switch shall be periodically observed
for evidence of malfunction. Subsequently, the contact voltage drop shall be measured.
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