MIL-DTL-22992G
4.6.20 Arc rupture, class L (see 3.23). Connectors, less coupling ring, shall be subjected to 50
continuous cycles of insertion and withdrawals while carrying the test currents specified in table VI.
Insertion and withdrawal cycle.
a.
(1)
One mating half of the connector pair shall be firmly mounted. The remaining half
shall be mounted in a reciprocating (cycling) mechanism and axially aimed with the
firmly mounted half.
(2)
The cycling mechanism shall mate the receptacle and plug to their normal mating
depth. At the initiation of testing and each subsequent cycle, the connector pair
shall be mated, and remain mated for 5 seconds minimum. The connector pair
shall then be separated at a rate of 10 1 inches (254 mm 25 mm) per second.
After separation, the connectors shall be remated at the same speed. One mating
and unmating sequence is considered one cycle. The mating and unmating cycle
shall be conducted at a rate not to exceed six complete cycles per minute.
b.
Electrical load.
(1)
For connectors rated at 400 Hz: The sockets shall be connected to a 400 Hz
source and the pins to an electrical load.
For connectors rated at 60 Hz: The sockets shall be connected to a 60 Hz source
and the pins to an electrical load.
(2)
The voltage shall be applied between the neutral contact and the phase contact
closest to the neutral contact. When no neutral contact is available, test between
two phase contacts.
(3)
A steady state inductive load equal to 150 percent of rated current as specified in
table VI, at a power factor between 0.75 and 0.80, and at a minimum of 208 volts
root mean square (rms), shall be applied using the circuit shown on figure 4. A
shunt resistance, in parallel with the inductance, is permissible, provided the
current through the resistor does not exceed 1 percent of the total load current.
The inductance shall not alter the waveform of the power supply. Following the
test, dielectric withstanding voltage and insulation resistance shall be tested as
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