MIL-PRF-62430B
processing, and materials conform to requirements. Applicable records shall include drawings,
specifications, design data, receiving inspection records, processing and quality control
standards, vendor catalogs and certifications, industry standards, test reports, and rating data.
4.5.2 Defects. Conformance to 3.1, 3.4 through 3.5.2, 3.5.5, and 3.7 shall be determined
by examination for the defects listed in table II. Examination shall be visual, tactile, or by
measurement with SIE. Nonconformance shall be cause for rejection.
4.5.3 Insulation resistance. To determine conformance to 3.5.3, the insulation resistance
between the individual circuits and connector shells and outer braid shall be measured at an
applied potential of 250 Vdc. Nonconformance shall be cause for rejection.
4.5.4 Output signal. To determine conformance to 3.5.4, the output signal of the
individual thermocouples shall be measured under the conditions specified in ASTM E230.
Nonconformance shall be cause for rejection.
4.5.4.1 Output signal accuracy. To determine conformance to 3.5.4.1, each individual
thermocouple junction shall be subjected to an applied temperature of 1112±18 °F (600±10 °C)
and the output signal measured. Nonconformance shall be cause for rejection.
4.5.5 Reliability. The satisfactory completion of preproduction testing specified in this
document is required for demonstration of the inherent reliability of the product. Usage and test
data derived from preproduction and vehicle field use of the same or similar product may be
submitted as evidence of demonstrated product reliability, subject to interpretation and approval
by the procuring activity. In the event that the test history is insufficient to provide satisfactory
evidence of the MTBF specified in 3.5.6, compliance with the product reliability requirement
may be determined on the basis of formal reliability analysis and predictions, employing
recognized and approved failure rate data sources and prediction procedures as specified by the
procuring activity.
4.5.6 Environmental tests. The harness shall be subjected to the environmental tests
specified herein. After completion of each environmental test, the performance tests specified in
4.5.3 through 4.5.4.1 and inspections 104 through 106 of table II shall be repeated. Prior to
conducting the environmental tests, the harness shall be subjected to an accelerated aging
temperature of 392 °F (200 °C) for 168 hours.
4.5.6.1 High temperature. To determine conformance to 3.6.la and 3.6.1b, the harness
shall be subjected to the high temperature test of MIL-STD-810, Method 501, Procedure I
(Storage). The temperatures specified in 3.6.1 shall apply and the harness shall be maintained at
the temperatures for an 8-hour period. Nonconformance shall be cause for rejection.
4.5.6.1.1 Thermocouple probe cycling. To determine conformance to 3.6.1c, upon
completion of the high temperature test, the thermocouple probes shall be subjected to not less
than 8000 cycles from a room temperature of 77 °F (25 °C) to 1800±50 °F (982±28 °C).
Nonconformance shall be cause for rejection.
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