MIL-DTL-17361G(SH)
PARAGRAPH
PAGE
3.5.20.2 Conformal coating .......................................................................................................................13
3.5.20.3 Sockets.........................................................................................................................................13
3.5.21 Designation and markings ....................................................................................................................13
3.5.21.1 Construction ................................................................................................................................13
3.5.21.2 Location .......................................................................................................................................13
3.5.21.3 Identification marking .................................................................................................................13
4. VERIFICATION ....................................................................................................................................................16
4.1 Classification of inspections ...........................................................................................................................16
4.2 Qualification inspection of AQB circuit breakers, mounting bases/blocks, fuses, fuse units and attachments
...............................................................................................................................................................................16
4.2.1 Additional attachment qualification requirements..................................................................................16
4.2.2 Qualification inspection of type NQB circuit breakers ..........................................................................20
4.2.3 Samples for qualification inspection ......................................................................................................20
4.2.4 Retention of qualification .......................................................................................................................20
4.3 Comparison inspection....................................................................................................................................20
4.4 Conformance inspection .................................................................................................................................20
4.4.1 Inspection ...............................................................................................................................................20
4.4.2 Rejected units .........................................................................................................................................20
4.4.3 Conformance production shock testing ..................................................................................................21
4.4.3.1 Sampling........................................................................................................................................21
4.4.3.2 Production shock test .....................................................................................................................21
4.4.3.3 Acceptance criteria ........................................................................................................................21
4.4.3.4 Action required if failure occurs ....................................................................................................21
4.4.3.5 Disposition.....................................................................................................................................22
4.5 Tests ................................................................................................................................................................22
4.5.1 General examination ..............................................................................................................................22
4.5.2 Creepage and clearance distances ..........................................................................................................22
4.5.3 Trip-free operation .................................................................................................................................22
4.5.4 Dielectric strength ..................................................................................................................................22
4.5.4.1 Test equipment ..............................................................................................................................22
4.5.4.2 Voltage magnitude.........................................................................................................................23
4.5.4.2.1 Full voltage ...........................................................................................................................23
4.5.4.2.2 Reduced voltage....................................................................................................................23
4.5.4.3 Voltage application/duration and pass/fail criteria ........................................................................23
4.5.4.3.1 Circuit breaker, fuse unit, attachments, and mounting base/block configuration .................23
4.5.4.3.1.1 Circuit breaker mounting base/block terminals and ground used as test points ...........23
4.5.4.3.1.2 Attachment leads used as test points ............................................................................24
4.5.4.3.1.2.1 Electric operating mechanism..............................................................................24
4.5.4.3.1.2.2 Undervoltage release, shunt trip, and auxiliary switch ........................................24
4.5.5 Insulation resistance ...............................................................................................................................24
4.5.5.1 Test equipment ..............................................................................................................................24
4.5.5.2 Test points and conditions .............................................................................................................24
4.5.5.3 Pass/fail criteria .............................................................................................................................24
4.5.5.3.1 10-megohm threshold ...........................................................................................................24
4.5.5.3.2 1-megohm threshold .............................................................................................................24
4.5.6 Attachment electrical characteristics ......................................................................................................24
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