MIL-PRF-18148D
to the mating receptacle. The voltage taps and power cables will remain on each sample
throughout the remainder of the test sequence, except for the immersion and salt fog tests.
4.5.6 Dielectric strength test. Apply a potential of 2500 ± 500 volts of any frequency up
to 600 Hertz between the electrical connections of the connector for 61 ± 1 seconds. Determine
if a sudden discharge of the electric potential occurs. Examine the connector for the
requirements of 3.12.5.
4.5.6.1 Dielectric strength test at room temperature. Stabilize the connector at room
temperature (see 4.4.1). Perform the test of 4.5.6 with both the connector and the environment at
room temperature.
4.5.6.2 Dielectric strength test at low temperature. Stabilize the connector at low
temperature (see 4.4.1). Perform the test of 4.5.6 on the cold connector in a room temperature
environment.
4.5.6.3 Dielectric strength test at high temperature. Stabilize the connector at high
temperature (see 4.4.1). Perform the test of 4.5.6 on the hot connector in a room temperature
environment.
4.5.7 Insulation resistance test. Apply a potential having an effective value of
500 ± 100 volts at any frequency up to 600 Hertz for 61 ± 1 seconds between the electrical
connections of the connector. Measure the maximum current. Calculate the resistance by
dividing the applied potential by the current measured. Examine the connector for the
requirements of 3.12.6.
4.5.7.1 Insulation resistance test at room temperature. Stabilize the connector at room
temperature (see 4.4.1). Perform the test of 4.5.7 with both the connector and the environment at
room temperature.
4.5.7.2 Insulation resistance test at low temperature. Stabilize the connector at low
temperature (see 4.4.1). Perform the test of 4.5.7 on the cold connector in a room temperature
environment.
4.5.7.3 Insulation resistance test at high temperature. Stabilize the connector at high
temperature (see 4.4.1). Perform the test of 4.5.7 on the hot connector in a room temperature
environment.
4.5.8 Operating torque test (applies only to plugs). Slowly torque the plug handle while
engaging the plug completely with its mating receptacle. Measure the maximum torque value.
Using the same wrench, slowly torque the plug handle while disengaging the plug completely
from its mating receptacle. Measure the maximum torque value. Examine the plug for the
requirements of 3.12.7.
10
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