MIL-R-83726/25H
REQUIREMENTS: Operating data:
Timing action: Delay-on release.
Time delay: Fixed; select from .05 to 500 seconds. Timing accuracy: ±10 percent of the nominal value. 1/ Recycle time: 10 milliseconds. 2/
Power interrupt: The accuracy will not be affected by power interruptions up to 1 millisecond spaced at least 10 milliseconds apart.
Control voltage (B1-X2): 20 V dc to 32 V dc. Control current: 2 milliamperes maximum.
Input data:
Input voltage: 28 V dc rated; range 20 V dc to 32 V dc. Duty rating: Continuous.
Current drain: 10 milliamperes maximum plus load at 25°C.
Polarity protection: The timer shall be inoperative during, and undamaged by, reversal of the polarity of the operating voltage.
Output data:
Configuration: SPST; switch closure to +28 V dc. Rating: 150 milliamperes maximum.
Suppression: Inductive suppression provided for output protection. Voltage drop: 2 V dc maximum.
Leakage current: 1.0 microampere maximum at 28 V dc and +25°C; 10 microamperes maximum at28 V dc and 125°C.
Endurance (life): 1,000,000 cycles minimum for test.
Qualification: 2,000 hours.
Group B: 1,000 hours or 1,000,000 cycles, whichever is less.
1/ The accuracy requirement applies to any combination of operating temperature and voltage.
2/ Recycle time is defined as the minimum time that power must be applied to the control terminal to assure that the next timing cycle will be completed within the specified timing tolerance. (Units may be recycled during timing or after time-out.)
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