230 VAC at 50, 60 or 400 Hz single phase. The power supply can also operate from a 24 VDC storage battery in the battery standby mode.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12

MIL-PRF-49080D

4.6.6

Bench handling. The power supply shall be tested in accordance with Method 516,

Procedure III, of MIL-STD-810. Before and after testing an operational checkout shall be

performed and shall consist of the tests in 4.5.1, and 4.5.2 and shall meet the requirements of 3.7.1,

3.7.3, 3.7.4, and 3.8.5.

Ballistic shock. The power supply shall be tested in accordance with Method 522,

4.6.7

Procedure VI, of MIL-STD-810. The power supply shall be secured in its normal operating

position to the test plate. The test shall consist of a total of 3 blows: one each 5 foot blow, on the

back, side and top of the test plate with the blows being directed to the power supply respectively.

As an alternative to reorienting the test plate for the blows on the side of the plate, equivalent

rotation of the power supply under test is permissible. Before and after testing an operational

checkout shall be performed and shall consist of the tests in 4.5.1, and 4.5.2 and shall meet the

requirements of 3.7.1, 3.7.3, 3.7.4, and 3.8.5.

4.6.8

Fungus. The power supply, with the cover removed, shall be subjected to the

fungus test specified in Method 508 of MIL-STD-810. There shall be abundant growth

colonization (see 6.5.3) on 50 percent or more of the area of the control item after 14 and 28 days.

The test shall be conducted for a minimum of 28 days. No cleaning of the power supply is

permitted for 72 hours prior to the fungus test. Handling, prior to and during testing, shall be

accomplished without contamination of the power supply. After the fungus test, the Power Supply

shall be visually examined, using a 10 power magnifier. Inability of the power supply to meet the

requirements of 3.8.6 shall constitute failure of this test.

4.6.9

Sand and dust. The power supply shall be tested while operating under full load in

accordance with Method 510, Procedure I (Blowing Dust) and Procedure II (Blowing Sand), of

MIL-STD-810. High temperature shall be high operational temperature per 3.8.1. Before and after

testing an operational checkout shall be performed and shall consist of the tests in 4.5.1, and 4.5.2

and shall meet the requirements of 3.7.1, 3.7.3, 3.7.4 (see 3.8.7).

4.6.10

Rain. The power supply shall be tested while operating under full load in

accordance Method 506, Procedure I of MIL-STD-810. Minimum rainfall rate shall be four (4)

in/hr, and minimum wind velocity shall be 40 mph Before and after testing an operational checkout

shall be performed and shall consist of the tests in 4.5.1, and 4.5.2 and shall meet the requirements

of 3.7.1, 3.7.3, 3.7.4 (see 3.8.8).

4.6.11

Air-seal test. The power supply shall be subjected to a vacuum of 1 pound per

square inch (1 pound per square inch less than the atmospheric pressure surrounding the power

supply) applied to the interior of the case. The vacuum then shall be valved-off and the interior

pressure measured during the ensuing period of 1 minute. The gage used for measurement of the

vacuum shall be of such accuracy that a difference of 0.1 pound can be determined readily (see

3.10).

4.7

Visual and mechanical inspection. The power supply shall be inspected for the

defects listed in paragraphs 3.12 and 3.12.1.

4.7.1

System safety engineering. Visual and mechanical inspection shall be performed to

verify the requirements of paragraphs 3.16.1.

4.8

Electromagnetic interference (EMI). The power supply shall be tested for

compliance with the requirements of 3.8 of this specification. During susceptibility tests, the power

supply shall be monitored per 4.5.2 and meet the requirements of 3.7.4.