MIL-DTL-24347B
3.26 Workmanship. Metal surfaces shall have a smooth finish and all details of manufacture, including the
preparation of parts and accessories, shall be in accordance with the best practice for high quality electrical
equipment. Particular attention shall be given to neatness and thoroughness of soldering, wiring, impregnation of
coils, marking of parts, plating, lacquering, riveting, clearance between connections, ruggedness, and suitability of
enclosure.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 First article inspection. First article inspection shall consist of the examination and tests specified in table I
(see 6.4).
4.2.1 First article sample. The first article sample shall be one monitor of each type.
4.3 Conformance inspection.
4.3.1 Inspection of product for delivery. Each production monitor shall be subjected to the conformance inspection
specified in table I.
4.3.2 Periodic inspection. Two years after first article inspection and after each two years in which the monitor is
offered for delivery thereafter, one monitor shall be subjected to the periodic inspection specified in table I.
4.4 Examination. Each monitor shall be examined to determine compliance with the workmanship requirements of
3.27.
4.5 Test procedures. Unless otherwise specified herein, all tests requiring electrical loading of equipment shall
normally be performed using a resistive load for uniformity and convenience.
4.5.1 Effectiveness of enclosure. The equipment enclosure shall be tested in accordance with MIL-E-2036 for
dripproof and watertight requirements. Dripproof and watertight enclosures shall be accepted or rejected based on
inspection to ascertain that the enclosure effectively performs its specified function (see figure 3). External wiring
connections shall be made to the unit.
4.5.2 Creepage and clearance. Creepage and clearance distances shall be demonstrated by actual measurement
in accordance with MIL-E-917.
4.5.3 Insulation resistance. Insulation resistance shall be as specified in 3.13. The measurement of insulation
resistance shall be made with all circuits of different voltage above ground connected together. Circuits or groups of
circuits of equal voltage shall be tested separately. Insulation resistance shall be measured with an insulation-
resistance-indicating meter at 500 volts dc. The time of test voltage application shall be not less than 60 seconds.
Measurements shall be made at any convenient ambient temperature with all circuits cold. The relative humidity and
ambient temperature shall be recorded. The monitor shall not be damaged when the main shipboard power circuit
cables are being tested between phases or between phase and ground with the 500-volt dc tester.
4.5.4 Wiring. The connecting voltage leads and current sensing leads to the monitor shall be individually subjected
to open circuit and grounded to determine that no damage occurs to the monitor.
4.5.5 Warm-up. When the monitor is subjected to nominal voltage and frequency at both 0°C and 65°C ambient
the equipment shall meet the requirements of 3.20.
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