MIL-R-5757J
4.6.20.2 Inductive load. Cycling rate shall be 10 cycles ±1 cycle per minute with approximately equal "on" and "off" periods. Current shall be rated current. Appropriate inductive load components (see 4.6.19.2.1 and 4.6.19.2.2, as applicable) shall be used. A suitable resistor may be placed in the circuit to obtain rated steady-state current flow. Inductive load testing shall be approved by the qualifying activity (see 6.10).
4.6.20.3 Lamp load. Unless otherwise specified, the lamp load shall be performed with a 28 V dc power supply voltage. Either lamps or simulated loads may be used to provide the load as follows:
a. Simulated loads shall subject the relays to making 12 times the rated lamp load and breaking the rated lamp load. The duration of the 12 times inrush shall be 0.015 second to 0.020 second. The total "on" time shall be
5 seconds ±0.05 second and the "off" time shall be 5 seconds ±0.05 second.
b. Lamps shall be screened to verify a minimum initial cold inrush of 12 times the rated lamp load. Only lamps meeting this requirement shall be used to provide load to the relays. The total "on" time shall be 2 seconds
±0.05 second and the "off" time shall be 7 seconds ±2 seconds.
4.6.20.4 Low level. Relays shall be tested in accordance with method 311 of MIL-STD-202. The following details apply:
a. Number of misses which will be considered a failure: One. b. Maximum contact resistance allowed: See 3.1.
c. Number of cycles of operation and cycling rate: 100,000 cycles, unless otherwise specified (see 3.1) at the rate of 60 cycles to 300 cycles per minute (c/m).
d. Contact load: 10 µA to 50 µA at 10 mV to 50 mV open circuit (maximum dc or peak ac). e. Dry reed contact load: 10 mA maximum at 30 mV open circuit (maximum dc or peak ac).
4.6.21 Intermediate current (see 3.23). Intermediate current shall not be considered a low level or high level contact load rating (see 6.1.1). Relays shall be tested as specified in method 312 of MIL-STD-202. The following details and exceptions shall apply:
a. Maximum contact resistance: As specified in 3.24.
b. Coil energizing voltage: Rated voltage (or current) (see 3.1).
c. Cycling rate: Ten cycles ±2 cycles per minute with minimum of 75 percent coil "ON" time. d. Contact current/voltage: 100 mA at 28 V dc.
e. Monitoring: At least 40 percent of the closed time of each contact during each operation shall be monitored for contact resistance.
f. Number of cycles: 50,000 cycles.
g. Ambient temperature: +125°C minimum.
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