MIL-DTL-62069G(AT)
4.4.3 Electrical.
4.4.3.1 Flashing. To determine conformance to 3.4.4, the flasher unit shall be subjected
to test potentials of 18, 24, and 30 Vdc. The "turn off time" shall be determined at the specified
test voltages.
4.4.3.2 Overload.
4.4.3.2.1 Control unit. To determine conformance to 3.4.1, 3.4.2, 3.4.3, and 3.4.5.1, the
control unit shall be connected into a circuit with a switch, a 30 A circuit breaker and a 24 V
power source. With the switch in the "OFF" position, connect the positive battery terminal to the
switch, connect the switch to the circuit breaker and connect the circuit breaker to terminal "D"
of the control unit (unit in neutral position). Connect terminals "C" and "E" of the control unit to
the negative terminal of the power source. The following test shall be performed:
a. With the control unit in the left turn position, turn the test circuit switch to the "ON"
position for one minute and then return to the "OFF" position for three minutes.
b. Repeat the cycle five times.
c. With the control unit in the right turn position repeat the above operations.
d. Subsequent to the above test, the flasher and control arm shall meet the requirements
of the flashing test (see 4.4.3.1).
4.4.3.2.2 Flasher unit. To determine conformance to 3.4.5.2, the flasher unit shall be
connected in a test circuit with one AA52463-B10 lamp, one circuit breaker (30 A), necessary
wiring, and a power source using two type 6TN batteries connected in series. The batteries shall
be fully charged in good condition, with the electrolyte having a corrected specific gravity
reading of 1.280 ±0.005 at 77F. The circuit breaker shall be connected between the power
source and the flasher. The lamp shall be shorted with a 10 in. length of No.14 AWG wire for
one minute. After removing the short, the flasher unit shall subjected to and pass the tests of
4.4.3.1.
4.4.3.3 Reverse polarity. To determine conformance to 3.4.6, the reverse polarity shall
be applied to the flasher unit, using a circuit consisting of ten AA52463-B10 lamps, necessary
wiring, and 28 volt dc power source. The reversed polarity shall be applied ten consecutive
times for one minute, at two minute intervals. The flasher shall subsequently be subjected to and
pass the tests of 4.4.3.1.
4.4.3.4 Endurance. To determine conformance to 3.4.7, the control unit shall be
connected in the test circuit and cycled for 50,000 cycles as specified in 4.4.5.1.1, except the
temperature shall be 77±15F. The control unit shall then be cycled for 123 000 cycles in the
same manner, except four AA52463-B10 lamps shall be removed from the load circuit,
simulating removal of two lamps from the right rear position and two lamps from the left rear
position. The flasher unit shall be cycled for 300 hours as specified in 4.4.5.1.2, except the
temperature shall be 77±15F. The endurance test shall be repeated on the hazard warning
switch, except that the switch shall be cycled 5000 times and the cycling rate shall be two
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