MIL-DTL-22992G
4.6.7.3 Protective covers. The protective covers shall be mated to a connector having either the
2
2
contacts or inserts removed and a pressure of 15 lbf/in (21.055 kg/cm ) shall be applied to the inner side
of the protective cover. The leakage rate shall be measured.
4.6.8 Contact retention (see 3.11). Individual contacts shall be subjected to the axial loads specified
in table III. The load shall be applied first in one direction then the other, on individual contacts with all
other contacts in place and the insert in the shell, uniformly at a rate of approximately 1 pound (.454 kg)
per second.
4.6.9 Insert retention (see 3.12). Inserts shall be subjected to the axial load specified in table IV, first
in one direction, then the other. Loading shall be accomplished by applying air pressure alternately to
2
each face of the insert. The pressure shall be increased gradually at a rate of approximately 10 lbf / in
2
(.703 kg/cm ) per second until the specified pressure in table IV is reached.
4.6.10 Insulation resistance (see 3.13). Mated connectors shall be tested in accordance with test
procedure EIA-364-21. The following detail and exception shall apply:
a. Points of application of test voltage - Between all adjacent pairs of contacts, but not more
than six pair, and between the shell and all adjacent contacts, but not more than six.
b. No measurements shall be made between grounding contacts or between grounding
contacts and shell of any grounding class L connector.
4.6.11 Humidity (see 3.14). All cable mounted connectors shall be completely wired and assembled
with appropriate accessories in accordance with the directions of the manufacturer. Cable used shall be
as specified (see 4.4.3). Class L receptacles shall be wired with suitable single conductor wire. The
mated connectors shall be subjected to 10 cycles of exposure in accordance with method 106 of
MIL-STD-202, with the exceptions and details listed below:
a.
Connectors shall be mounted in a horizontal position with the wires or cables descending
into the backshells. There shall be no drip loops in the wires or cables.
b.
Wires and cables shall be brought out of the chamber through vapor-tight seals or the
ends of the wires/cables shall be effectively sealed.
c.
There shall be no wire splices in the chamber.
d.
Delete steps 7a and 7b.
e.
During steps 1 to 6 inclusive, a polarizing potential of 100 volts dc shall be applied
between alternate contacts connected together electrically and the remaining contacts
and shell connected together electrically. The polarity of the voltage applied to the shell
shall be negative. Voltage shall not be applied to the grounding contacts of class L
grounding connectors.
f.
After a minimum of 3 hours of step 7 of the tenth cycle, while at the high humidity
condition, the connectors shall be subjected to the insulation resistance test of 4.6.10.
Following these measurements, the connectors shall be maintained at test conditions of
g.
4.3 for 24 hours maximum. At the conclusion of this recovery period, insulation
resistance and dielectric withstanding voltage shall be tested as specified in 4.6.10 and
4.6.5, respectively.
4.6.12 Durability with coupling rings (see 3.15). Counterpart connectors shall be mated and
unmated 100 times at a maximum rate of 30 cycles per hour with coupling rings attached. The
connectors shall be mated and unmated 50 cycles before corrosion and 50 cycles after corrosion.
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