MIL-DTL-16036M(SH)
4.4.3.6.3.7 Pass/fail criteria. Temperature rise tests shall be conducted to verify that the maximum air
temperature within any compartment in the switchboard section does not exceed 167 °F (75 °C) when operating
within an ambient temperature of 122 °F (50 °C). A functional check of applicable controls and communications
shall be performed at temperature stabilization. In addition, temperature rise shall not exceed 158 °F (70 °C) for
circuit breaker stationary element terminals.
4.4.3.7 Electromagnetic interference. The EMI tests of MIL-STD-461 for surface ship, below deck, metallic
hull installations shall be conducted on switchboards with electronic devices. Testing shall not cause false tripping
of circuit breakers or failure of electronic devices. Fans shall be energized during EMI testing.
4.4.3.8 Voltage spike testing. The control circuits shall be tested in accordance with the voltage spike testing
requirements of MIL-STD-1399-300. Testing shall not cause false tripping of circuit breakers, abnormal operation,
or failure of components.
4.4.3.9 Short circuit tests. Switchboards shall be subjected to short circuit tests in accordance with IEEE
C37.20.1. The maximum RMS asymmetrical short circuit current shall be as specified (see 6.2).
4.4.3.10 Insulation resistance. Insulation resistance tests shall be performed on the switchboard section(s)
before and after shock testing. Insulation resistance shall be measured with a 500 volt test potential in accordance
with MIL-E-917. With all circuit breakers closed, the insulation resistance shall be measured from phase to phase
and between each phase and the switchboard frame/chassis. Insulation resistance shall not be less than 10 megohms
at 77 °F (25 °C) for any readings before and after shock testing.
4.4.3.10.1 Insulation resistance correction factor. Correction shall be made on the basis of insulation resistance
doubling for each 27 °F (15 °C) decrease in temperature from 77 °F (25 °C).
4.4.3.11 Noise testing. When fans are installed, airborne and structureborne noise testing in accordance with
MIL-STD-1474, Equipment Grade E, and MIL-STD-740-2, Type IV shall be conducted.
4.4.4 Test reports. When specified (see 6.2), vibration and shock test reports, a first article inspection report,
and a first article inspection procedure shall be prepared.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point s packaging activities within the Military Service or
Defense Agency, or within the military service s system commands. Packaging data retrieval is available from the
managing Military Department s or Defense Agency s automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. Switchgears covered by this specification are intended to provide protection, control, and
distribution of electrical power on Naval ships.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
b.
c.
When first article is required (see 3.1).
d.
If equipment or components used are made of or contain PVC material (see 3.3.1.4).
e. When the equipment does not conform to the general requirements of MIL-E-917 and is not designed for
operation, maintenance, and repair by the 5th through the 95th percentile user as described in MIL-STD-46855 (see
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