MIL-DTL-62547D
3.3.1.1.9 Electrical.
3.3.1.1.9.1 Connector receptacle. Electrical interface shall be through a
MS3112 E14-5PN or MS3470 W14-5PN connector receptacle, or equivalent, as specified on
Drawing 12370477. Pin assignments shall be as shown in table I (see 4.4.1).
TABLE I. Availability signals and connector pin assignments.
Pin
Function
In/Out
Signal
Duration
A
ACTIVATION SIGNAL AND
IN
16 Vdc minimum
CONTINUOUS
30 Vdc maximum
33 to 38 ms
CONTINUITY MONITOR
10 A maximum for
solenoid load
impedance
Continuous
≤0.9 ohms 1/
Quiescent condition:
5mA maximum
B
RETURN
C
PRESSURE/FLOW MONITOR
IN
High pressure and no
flow-short to pin B
Continuous
Low pressure or flow-
open circuit to pin B
D
UNUSED
E
UNUSED
1/ Less than or equal to (≤).
3.3.1.1.9.2 Polarity. The valve shall operate with a negatively grounded, two wire direct
current, electrical circuit (see 4.4.1).
3.3.1.1.9.3 Activation signal. The valve shall discharge upon receipt of a signal as
specified in table I. The valve shall not be damaged by input currents up to 30 ampere (A) for a
duration of 80±20 ms (see 4.4.1).
3.3.2 Extinguisher. Each extinguisher shall consist of a valve (see 3.3.1), and a non-
shatterable receiver bottle, filled with liquid and vaporous Halon 1301 and superpressurized to
5170 kPa (750 psi) at 21 °C (70 °F) with dry nitrogen. The extinguisher shall be designed for
vehicle use mounted in a vertical position with the valve down (see 4.4.1).
3.3.2.1 Configuration. The extinguisher shall conform to the physical and dimensional
requirements of Drawing 12370460. The extinguisher shall be complete with an outlet port anti-
recoil plug and a manual release lock. The receiver cylinder shall conform to the applicable
drawing accordingly as follows (see 4.4.1):
Class 1 - 12295272
7
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