MIL-R-193090
4.4.1 Vibration.
4.4.1.1 Mounting. The relay, less pack or packaging, shall be mounted securely to a vibration device by its mounting holes and vibration tested as specified in 4.4.1.2 and 4.4.1.3.
4.4.1.2 Vibration, nonoperating. The relay shall be subjected to the "Vibration, nonoperating" test of
MIL-E-82590(08) and thereafter shall meet the requirements of 3.6.1.1.
4.4.1.3 Vibration, operating. The relay shall be subjected to the "Vibration, operating" test of MIL-E-82590(08)
and during and thereafter shall meet the requirements of 3.6.1.2.
4.4.1.4 Vibration, transportation. The relay shall be subjected to the "Vibration, transportation" test of
MIL-E-82590(08) and thereafter shall meet the requirements of 3.6.1.3.
4.4.2 8hock, transportation. The relay shall be subjected to the "8hock transportation" test of MIL-E-82590(08)
and thereafter shall meet the requirements of 3.6.2.
4.4.3 Acceleration. The relay, mounted as specified in 3.6.3, shall be subjected to acceleration testing as specified in section 4 of MIL-T-18404 for a torpedo ready nonoperating, ready, or operating. At the conclusion of the test the relay shall meet the performance and other requirements specified in this specification.
4.4.4 Temperature and humidity.
4.4.4.1 High temperature and humidity, nonoperating. The relay shall be subjected to the "High temperature and humidity, nonoperating" test of MIL-E-82590(08) and thereafter shall meet the requirements of 3.6.4.1.
4.4.4.2 High temperature, operating. The relay shall be subjected to the "High temperature, operating" test of
MIL-E-82590(08) and, while at the test temperature, shall meet the requirements of 3.6.4.2.
4.4.4.3 Low temperature, nonoperating. The relay shall be subjected to the "Low temperature, nonoperating" test of MIL-E-82590(08) and thereafter shall meet the requirements of 3.6.4.3.
4.4.4.4 Low temperature, operating. The relay shall be subjected to the "Low temperature, operating" test of
MIL-E-82590(08) and, while at the test temperature, shall meet the requirements of 3.6.4.4.
4.4.5 Pressure.
4.4.5.1 Altitude. The relay shall be subjected to pressure testing as specified in 8ection 4 of MIL-T-18404 for altitude. At the conclusion of this test, the relay shall meet the performance and other requirements specified in this specification (see 3.6.5.1).
4.4.5.2 Fluctuating. The relay shall be subjected to pressure cycling as specified in 8ection 4 of MIL-T-18404 for a submarine launched torpedo. At the conclusion of this test, the relay shall meet the performance and other requirements specified in this specification (see 3.6.5.2).
4.4.5.3 Immersion. The relay shall be immersed in a saturated solution of sodium chloride under an absolute pressure of 2.5 inches of mercury for a period of four hours. The immersed relay shall be observed for leakage, as evidenced by bubbles emanating from the sealed case. Approximately one-half the relays so immersed shall have the case removed in order that the interiors may be further examined for evidence of leakage (see 3.6.5.3).
4.4.6 0perating life. 0perate the relay, under the environmental conditions specified in 4.3.1, for a total of 100,000 contact transfers while the contacts are carrying the rated current of 2.0 amperes at 28 volts resistive load. The relay coil will be energized from a 10 ± 1 V dc or rectified ac power source. The test pulse rate shall be at least 4 Hz with a
50 ± 10 percent duty cycle. At the conclusion of the test, the relay shall meet the performance and other requirements specified in the specifications.
4.5 Waiver of tests. Tests specified in 4.4.1.4 and 4.4.2 may be waived by the acquiring agency for Level C packs only, provided the contractor guarantees safe delivery to the using activity.
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