MIL-R-83407C
4.5.14 Thermal shock (high and low temperature operation) (see 3.17). Relays shall be tested in accordance with method 107 of MIL-STD-202. The following details and exceptions apply:
a. Special mounting: Relays shall be suspended in the test chamber by twine or other nonheat- conducting material, in a plane parallel to the normal air flow. Test leads may be used for mounting; however, they shall not provide a heat sink.
b. Test condition: B, except temperature range shall be as specified (see 3.1), and exposure time at temperature extreme during the fifth cycle shall be 2 hours each.
c. Measurements at each temperature extreme during steps 1 and 3 of the fifth at the end of each temperature exposure, and with the relays still in the conditioning chamber, the insulation resistance, pickup and dropout voltages, and operate and release times, shall be measured as specified in 4.5.4, 4.5.6, and 4.5.9, respectively.
d. Measurements after cycling: Relays shall be visually examined for cracking, peeling, and flaking of the finish. The dielectric withstanding voltage shall then be measured as specified in 4.5.3.
4.5.15 Shock (specified pulse) (nonoperating) (see 3.18). Relays shall be tested in accordance with method 213 of
MIL-STD-202. The following details and exceptions apply:
a. Mounting method: Rigidly mounted by normal mounting means. (Relays designed without mounting provisions shall be rigidly secured to a suitable nonmagnetic mounting plate by means of potting or adhesive applied between the top of the relay and the mounting plate.)
b. Test condition: A, except peak value shall be 10 g's.
c. Electrical load conditions: The coil shall be deenergized and the contacts shall not be loaded or monitored for chatter and closure.
d. Measurements and examinations after shock: Dielectric withstanding voltage, contact resistance, and pickup and dropout voltages shall be measured as specified in 4.5.3, 4.5.8, and 4.5.6, respectively. Relays shall then be examined for loosening of parts.
4.5.16 Vibration (nonoperating) (see 3.19). Relays shall be tested in accordance with method 204 of
MIL-STD-202. The contacts shall not be loaded or monitored for chatter or closure during vibration. The following details apply:
a. Mounting: Same as 4.5.15a.
b. Test condition: A, except amplitude shall not exceed 5 g's and frequency range shall be 10 to 300 Hz. c. Measurements: Same as 4.5.15d.
4.5.17 Moisture resistance (when specified) (see 3.1) (see 3.20). Relays shall be tested in accordance with method 106 of MIL-STD-202. The following details and exceptions apply:
a. Mounting: On a corrosion-resistant panel by normal mounting means. b. Initial measurement: Not applicable.
c. Loading voltage: Not applicable.
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