MIL-PRF-83726/28K
REQUIREMENTS:
OPERATING REQUIREMENTS:
Timing action: Delay-on-operate.
Time delay: Fixed; select from 0.1 second to 500 seconds.
Timing accuracy: 10 percent of nominal value. (The accuracy requirement applies for any
combination of operating temperature and voltage. Add 10 ms for timing less than 1 second.)
Recycle time: 50 milliseconds maximum.
Power interrupt: 500 microseconds. (Transient and power loss specifications are based on a
maximum duty cycle of 1/50.)
Operating current: 150 mA maximum at 25°C.
INPUT REQUIREMENTS:
Input voltage range: 20 V dc to 30 V dc. (Minimum high temperature test 21 V dc, minimum
continuous current test 23.5 V dc.)
Duty rating: Continuous.
Polarity protection: The timer shall be inoperative during, and undamaged by, reversal of the polarity
of the operating voltage.
OUTPUT REQUIREMENTS: (At +25°C unless otherwise specified.)
Configuration: DPDT.
Life: See table I.
TABLE I. Life load ratings (relay case grounded).
Amperes
Amperes
Type of load
Life (cycles)
28 V dc
115/200 V ac 400 Hz
Resistive
100,000
10
10
Inductive
20,000
8
8
Motor
100,000
4
4
Lamp
100,000
2
2
Low level 1/
100,000
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1/ Contact load 10 µA to 50 µA at 10 mV to 50 mV (dc or peak ac).
ELECTRICAL REQUIREMENTS:
Transients: in accordance with MIL-STD-704 for 28 volts dc system .
Spike:
Self-generated: 50 volts maximum.
Spike transients: 600V, 10 microseconds maximum.
Susceptibility: + 80V maximum; -600 V maximum.
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