MIL-R-10509J
4.7.7 Terminal strength (see 3.12). Resistors shall be tested in accordance with method 211 of
MIL-STD-202. The following details and exceptions shall apply:
a. Test condition letters: A and D. Direct load (condition A) shall be as specified (see 3.1). Resistor clamped by one terminal lead and load applied to the other terminal lead.
b. Measurement before and after test: DC resistance shall be measured as specified in 4.7.2. Following the test, resistors shall be examined for evidence of loosening of terminals, breakage, and
other mechanical damage.
4.7.8 Dielectric withstanding voltage (see 3.13).
4.7.8.1 Atmospheric pressure. Resistors shall be tested in accordance with method 301 of
MIL-STD-202. The following details and exceptions shall apply:
a. Special preparations: Resistors shall be placed in a conductive material which will conform to the resistor surface so that between 90 and 100 percent of the outer periphery is contacted. The conductive material shall be centered on the resistor body. Care should be taken that any part of the resistor lead is as far away from the conductive material as possible (see figure 2).
FIGURE 2. Resistor- contacting assembly for dielectric strength. b. Initial measurement: DC resistance shall be measured as specified in 4.7.2.
c. Magnitude of test voltage: Sine wave test potential of 900 volts rms, except that for styles RN50, RN55, and RN60, the potential shall be 450 volts rms.
d. Nature of potential: An ac supply at commercial line frequency (not more than 100 hertz (Hz)) and waveform.
e. Rate of application of test voltage: 100 volts per second. f. Duration of application of test voltage: 1 minute.
g. Points of application of test voltage: Between the resistor terminals connected together and the
V-block.
16
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business