ready for connection to the equipment, and prior to energization. The test
voltage shall be 500 volts dc, applied for one minute between each
conductor and ground and between all possible combinations of conductors in
the same trench, duct, or cable, with other conductors in the same trench,
duct, or conduit. The minimum value of insulation shall be:
R in megohms = (rated voltage in kV + 1) x 304,800/(length of cable in
meters)R in megohms = (rated voltage in kV + 1) x 1000/(length of cable in
feet)
Each cable failing this test shall be repaired or replaced. The repaired
cable shall then be retested until failures have been eliminated.
3.4.6
Pre-Energization Services
The following services shall be performed on the equipment listed below.
These services shall be performed subsequent to testing but prior to the
initial energization. The equipment shall be inspected to insure that
installation is in compliance with the recommendations of the manufacturer
and as shown on the detail drawings. Terminations of conductors at major
equipment shall be inspected to ensure the adequacy of connections. Bare
and insulated conductors between such terminations shall be inspected to
detect possible damage during installation. If factory tests were not
performed on completed assemblies, tests shall be performed after the
installation of completed assemblies. Components shall be inspected for
damage caused during installation or shipment and to ensure that packaging
materials have been removed. Components capable of being both manually and
electrically operated shall be operated manually prior to the first
electrical operation. Components capable of being calibrated, adjusted,
and tested shall be calibrated, adjusted, and tested in accordance with the
instructions of the equipment manufacturer. Items for which such services
shall be provided, but are not limited to, are the following:
Capacitors.
Switches.
3.4.7
Performance of Acceptance Checks and Tests
Perform in accordance with the manufacturer's recommendations and include
the following visual and mechanical inspections and electrical tests,
performed in accordance with NETA ATS.
3.4.7.1
Overhead-Type Distribution Transformers
a.
Visual and mechanical inspection
(1) Compare equipment nameplate information with specifications
and approved shop drawings.
(2)
Inspect physical and mechanical condition.
(3) Verify tightness of accessible bolted electrical connections
by calibrated torque-wrench method. Thermographic survey is not
required.
(4) Perform specific inspections and mechanical tests as
recommended by manufacturer.
SECTION 16301N
Page 41
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