MIL-T-50332A (AR)
3.3 Environmental service conditions.
3.3.1 Vibration. The high voltage tester shall be mounted on
the vibration tab table in normal service position. The high voltage
tester shall meet the requirements of 3.4 and 3.5 after-being
subjected to continuous vibration for two hours along each of
three mutually perpendicular axes within the frequency range and
anplitude as follows:
Frequency Range
Double Amplitude
5 to 15 Hz
0.06 inch
0.04 inch
15 to 25 Hz
25 to 55 Hz
0.02 inch
The rate of change of frequency at each frequency range shall
not exceed one cycle-per-second (1 cps/see) . Vibration tests
shall be conducted under ambient room conditions.
3.3.2 Shock. The high voltage tester shall not suffer damage
and shall meet the requirements of 3.4 and 3.5 after being sub-
jected to 18 impact shocks, consisting of three shocks in op-
posite directions along each of the three mutually perpendicular
axes . The shock impulses shall have an acceleration of 15 grav-
ity units (G's) and a pulse duration of 11 ± 1 milliseconds. The
G value of each impulse shall be within ± 10 percent when measured
with a 0.2 to 250 Hz filter and the maximum G shall occur at
approximately 5-1/2 milliseconds.
3.3.3 Altitude.
The high voltage tester shall meet the re-
3.3.3.1 0 Operatin
quirements of 3. and 3.5 during and after exposure to baro-
metric pressure encountered at 10,000 feet above sea level (20.6
inches Hg) .
The high voltage tester shall meet the
requirements of 3.5 after exposure for not less than.10
minutes to barometric pressure encountered at 40,000 feet above
sea level (5.5 inches Hg) .
Temperature .
3.3.4
The high voltage tester shall meet the
3.3.4.1 Operating
requirements of 3.4 and 3.5 when stabilized thermally at any
temperature between +32°F and +90°F.
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