MIL-DTL-3124E(SH)
3.7 Interchangeability. In no case shall parts be physically interchangeable or reversible unless such parts are
also interchangeable or reversible with regard to function, performance, and strength.
3.8 Workmanship. Workmanship should follow the guidance provided in Guideline 9 of MIL-HDBK-454.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:
a.
First article inspection (see 4.3).
b.
Conformance inspection (see 4.4).
4.2 Inspection conditions. All measurements shall be made within the following ambient conditions:
a.
Temperature: 50 to 95 °F (15 to 35 °C).
b.
Atmospheric pressure: 550 to 800 millimeters of mercury.
c.
Relative humidity: 20 to 80 percent.
4.3 First article inspection. First article inspection shall be performed on the first generator of a design, type,
and size offered for delivery when a first article sample is required (see 3.1). This inspection shall include the
TABLE IV. First article and conformance inspection.
Conformance
First
Test
inspection
Test
Requirement
article
method
inspection Group A Group B
Examination
X
X
X
Electrical insulation
X
X
X
1/
Air-gap measurements
X
X
X
1/
Resistance
X
X
X
Airborne and structureborne noise
X
X
X
Vibration
X
X
X
Dynamic balance
X
X
X
1/
No-load, rated voltage saturation data
X
X
X
Lubrication
X
X
X
Overspeed
X
X
X
Insulation resistance
X
X
X
Dielectric
X
X
X
Effectiveness of enclosure
X
---
---
Heating and overload tests
X
---
X
Insulation resistance (hot)
X
---
X
Automatic voltage regulator
X
---
---
Shock tests
X
---
---
For three-phase generators only:
Voltage and current balance
X
---
X
Three-phase and single-phase short circuit
X
---
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