MIL-DTL-24788A
FIGURE 6. Electrical resistance test set-up.
4.5.10 Insulation breakdown. This test is applicable to Class 2 semi-dry-break, quick-disconnect coupling
assemblies. One thousand volts root mean square (rms), 60 hertz, shall be applied as indicated on Figure 6, with the
control switch in the open position. Failure to meet the requirements of 3.10.10 shall be cause for rejection.
4.5.11 Accelerated corrosion. The complete semi-dry-break, quick-disconnect coupling assembly (60-mesh
strainer, male half, and female half) shall be immersed in a 2.5 percent solution by weight of sodium chloride and
water for a period of between 5 to 10 seconds. The assembly shall then be dried for a period of 1 hour at a
temperature of 130±5 °F. The procedure shall be repeated for a total of 50 cycles. Immediately after this test, the
assembly shall be washed with warm water to remove all salt accumulations and then dried. The assembly shall
then be subjected to the operating force, leakage, and electrical resistance tests of 4.5.2, 4.5.3, and 4.5.9,
respectively. For Class 2 couplings, the insulation breakdown test of 4.5.10 shall also be conducted. Failure to meet
the requirements of 3.10.11 shall be cause for rejection.
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