MIL-R-83516B
TABLE II. Qualification inspection - Continued. 1/
1/ Select the specified number of relays at random from the 13 sample units.
2/ A test procedure (such as dielectric withstanding voltage) required at the conclusion of a procedure shall be
known as a post test of that procedure. Some post tests are required to be repeated on sample units as post tests for more than one test procedure. At the option of the manufacturer, such post testing shall be required only at the conclusion of the life test.
3/ One additional sample unit is included in each sample of 13 sample units to permit substitution for the failure allowed in group I.
4.5.1.2 Group A inspection. Group A inspection shall consist of the inspections specified in table III.
4.5.1.2.1 Sampling plan. Subgroups 1 and 2 tests shall be performed on each relay offered for inspection.
4.5.1.2.2 Rejected lots.
TABLE III. Group A inspection.
Inspection 1/ |
Requirement paragraph |
Test method paragraph |
Quality level (percent effective) |
Subgroup 1 Thermal shock - - - - - - - - - - - - - - - - - - - - - - Run in - - - - - - - - - - - - - - - - - - - - - - - - - - - - Contact stability- - - - - - - - - - - - - - - - - - - - - - Dielectric withstanding voltage - - - - - - - - - - - - Insulation resistance - - - - - - - - - - - - - - - - - - - DC coil resistance - - - - - - - - - - - - - - - - - - - - Coil transient suppression (applicable to relays with internal diodes) - - - - - - - - - - - - - - - - - Pickup and dropout voltages (as applicable, see 3.1) - - - - - - - - - - - - - - - - - - - - - - - - - - Coil power dissipation (when specified, see 3.1) - - - - - - - - - - - - - - - - - - - - - - - - - - Static contact resistance - - - - - - - - - - - - - - - - Operate and release times (as applicable) see 3.1) - - - - - - - - - - - - - - - - - - - - - - - - - - Subgroup 2 Visual and mechanical examination (external) 2/ - - - - - - - - - - - - - - - - - - - - - - |
3.5 3.6 3.7 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.1, 3.3, 3.4, 3.30, and 3.31 |
4.6.2 4.6.3 4.6.4 4.6.6 4.6.7 4.6.8 4.6.9 4.6.10 4.6.11 4.6.12 4.6.13 4.6.1.2 |
100% inspection (discard all failure relays) ….. …… 100% inspection |
1/ The order of performing the inspections shall be as listed except the order of performing the electrical
characteristics tests is optional.
2/ Physical dimensions shall be checked on only two relays selected at random from each lot.
4.5.1.2.2.1 Subgroup 1. If over 10 percent of an inspection lot fails, the relays contained in that lot shall be rejected and shall not be resubmitted for inspection. Relays which have failed to pass subgroup 1 tests to which they have been subjected, shall be removed from the lot and discarded.
4.5.1.2.2.2 Subgroup 2. If an inspection lot is rejected, the manufacturer may rework it to correct the defects, or screen out the defective units and resubmit for reinspection. Resubmitted lots shall be inspected using tightened inspection and shall not thereafter be tendered for acceptance unless the former rejection or requirement of correction is disclosed. Such lots shall be separate from new lots and shall be clearly identified as reinspected lots.
4.5.1.2.3 Disposition of sample units. Sample relays which have passed all the group A inspection may be delivered on the contract or purchase order, if the lot is accepted and the sample relays are still within the specified electrical tolerances.
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