MIL-DTL-29183C
e. The inability of the test unit to operate satisfactorily at rated loads during and after the
rain test shall constitute a failure.
4.5.4.4 Salt fog test. The salt fog test shall be conducted on the distribution panel in
accordance with MIL-STD-810.
4.5.4.5 Dust test. The dust test shall be conducted on the distribution panel in accordance
with MIL-STD-810, using an air velocity of 1,750 feet per minute.
4.5.4.6 Shock test. The test unit shall be shock tested by the following procedure:
a. Place test unit in a normal operating position.
b. Raise test unit six inches vertically and free drop on a two-inch thick plywood surface
backed by concrete.
c. Repeat step (b) three times.
d. Upon completion of the drop test, the test unit shall be visually inspected for damage
and operation.
e. The inability of the test unit to operate satisfactorily at rated loads or indication of
structural damage shall constitute a failure.
4.5.4.7 Humidity test. Prior to conducting these tests, the condensed moisture shall be
removed from the exterior of the test panel, and the panel shall be effectively grounded, with the
ground resistance not exceeding 25 ohms in accordance with NFPA 70. The humidity test shall be
conducted in accordance with MIL-STD-810. The maximum temperature shall be 125 °F (52 °C)
and the total number of cycles shall be five. After the conclusion of the fifth cycle the panels shall
operate satisfactorily at rated circuit breaker current loads.
4.5.5 Stability test. Dummy cable and connector assemblies having the same weight,
moment distribution, and mounting orientation as the actual cable and connector assemblies shall
be attached to all the mating receptacles or lug terminals on one side of the distribution panel.
The distribution panel shall then be placed on a 15 degree incline, with the panel side having the
connector cables attached, facing down the incline slope. The distribution panel shall be stable
and show no signs of tipping when the cables are lying on the incline in a stable position.
Disconnect the connector assemblies and install the connector assemblies on another side of the
distribution panel. Repeat the test until each side having connectors has been tested.
4.5.6 Tie-down test. The distribution panel shall have the forces specified in 3.9.1
applied. No evidence of damage to or bending of the tie-downs or distribution panel frame and
housing shall be evident.
18
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business