MIL-R-83407C
d. Final measurements: Upon completion of step 6 of the final cycle, insulation resistance shall be measured as specified in 4.5.4. After a 24 hour drying period at a relative humidity of 50 ±5 percent, dielectric withstanding voltage shall be measured as specified in 4.5.3, except that the test voltage shall be 90 percent of the initial potential. The insulation resistance, contact resistance, and pickup and dropout voltages shall be measured as specified in 4.5.4, 4.5.8, and 4.5.6, respectively.
e. Examination after test: Relays shall be examined for evidence of breaking, cracking, chipping, or flaking of the finish, and loosening of the terminals.
4.5.18 Magnetic interference (see 3.21). The relay under test and eight similar relays shall be mounted in the same physical orientation by nonmagnetic means, as shown in figure 4. Unless otherwise specified, grid-spaced relays shall be mounted so that all terminals are positioned in the closest possible grid pattern. Unless otherwise specified, the spacing between terminals and the tops of the adjacent terminals shall be as shown in figure 4. Pickup and dropout voltages (or current) shall be measured on the relay under test as specified in 4.5.6 with the coils of the eight outer relays energized at rated voltage (the magnetic polarity of each relay shall be similarly oriented) (see 6.4). This measurement shall be repeated with the coils of the eight outer relays deenergized.
FIGURE 4. Mounting array for adjacent similar relays.
4.5.19 Resistance to soldering heat (see 3.22). Relays shall be tested in accordance with method 210 of
MIL-STD-202. The following details and exceptions apply:
a. Depth of immersion in molten solder: Within .060 ±.020 inch (1.52 ± 0.51 mm)of the relay base. b. Test condition: B.
c. Measurements after test: Insulation resistance, contact resistance, pickup and dropout voltage, and dc coil resistance shall be measured as specified in 4.5.4, 4.5.8, 4.5.6, and 4.5.5, respectively.
4.5.20 Salt spray (corrosion) (see 3.23). Relays shall be tested in accordance with method 101 of MIL-STD-202. The following details and exceptions apply:
a. Applicable salt solution: 5 percent. b. Test condition: B.
c. Examination after test: Relays shall be examined for evidence of peeling, chipping, flaking of the finish, and exposure of base material due to corrosion.
4.5.21 Terminal strength (see 3.24). Relays shall be tested in accordance with test condition A, method 211, MIL-STD-202. The force shall be as specified (see 3.1) and only two terminals per relay shall be tested.
13
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business