MIL-DTL-28827C
FIGURE 1. Temperature response vs time.
4.7.10 Dielectric withstanding voltage (see 3.14). Switches shall be tested in accordance with 4.7.10.1
and, when applicable (see 3.1 and 6.1.2), in accordance with 4.7.10.2. This test shall be performed with
the switch in normal position, and shall then be repeated for other operating positions.
4.7.10.1 At atmospheric pressure. Switches shall be tested in accordance with method 301 of MIL-
STD-202. The following details shall apply:
a. Magnitude of test voltage 1,000 volts plus twice the working voltage for initial test and 1,000
volts for subsequent tests.
b. Nature of potential AC.
c. Duration of application of test voltage 1 minute for qualification tests, 5 seconds for group A
tests at 20 percent higher voltage.
d. Points of application of test voltage Between all terminals and ground.
f. Examination after test Switches shall be examined for evidence of arcing and flashover.
4.7.10.2 At reduced barometric pressure. Switches designed for operation above 10,000 feet shall be
details and exception shall apply:
a. Method of mounting Normal mounting means.
b. Test condition The reduced pressure utilized shall be that of the rated altitude of the switch
(see 3.1).
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