shall perform all tests and inspections recommended by the manufacturer
unless specifically waived by the Contracting Officer. The Contractor
shall maintain a written record of all tests which includes date, test
performed, personnel involved, devices tested, serial number and name of
test equipment, and test results. Field test reports shall be signed and
dated by the Contractor.
3.11.2
Safety
The Contractor shall provide and use safety devices such as rubber gloves,
protective barriers, and danger signs to protect and warn personnel in the
test vicinity. The Contractor shall replace any devices or equipment which
are damaged due to improper test procedures or handling.
3.11.3
Ground-Resistance Tests
The resistance of [each grounding electrode] [each grounding electrode
system] [the ground mat] [the ground ring] shall be measured using the
fall-of-potential method defined in IEEE Std 81. Ground resistance
measurements shall be made before the electrical distribution system is
energized and shall be made in normally dry conditions not less than 48
hours after the last rainfall. Resistance measurements of separate
grounding electrode systems shall be made before the systems are bonded
together below grade. The combined resistance of separate systems may be
used to meet the required resistance, but the specified number of
electrodes must still be provided.
a.
Single rod electrode - [25] [_____] ohms.
b.
Multiple rod electrodes - [_____] ohms.
c.
Ground mat - [_____] ohms.
d.
Ground ring - [_____] ohms.
3.11.4
Ground-Mat Connection Inspection
All below-grade ground-mat connections will be visually inspected by the
Contracting Officer before backfilling. The Contractor shall notify the
Contracting Officer [_____] hours before the site is ready for inspection.
3.11.5
Medium-Voltage Cable Test
**************************************************************************
NOTE: If the installation is tapping a new feeder
to an existing feeder using a "T" splice, modify the
paragraph to indicate that when existing cable
cannot be readily disconnected, the system should
only be tested to the lower (after installation)
voltage.
**************************************************************************
After installation and before the operating test or connection to an
existing system, the medium-voltage cable system shall be given a high
potential test. Direct-current voltage shall be applied on each phase
conductor of the system by connecting conductors as one terminal and
connecting grounds or metallic shieldings or sheaths of the cable as the
other terminal for each test. Prior to making the test, the cables shall
be isolated by opening applicable protective devices and disconnecting
SECTION 16375A
Page 63
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