d.
Insulation power-factor by manufacturer's recommended test method.
e.
No-load losses (NLL) and excitation current
f.
Load losses (LL) and impedance voltage
g.
Dielectric
1.
Impulse: Per IEEE C57.12.90 paragraph 10.3 entitled "Lightning
Impulse Test Procedures," and IEEE C57.98. Test the primary
winding only.
(a)
State test voltage levels
(b) Provide photographs of oscilloscope display waveforms or
plots of digitized waveforms with test reports.[ As an
alternative, photographs of oscilloscope display waveforms or
plots of digitized waveforms may be hand-delivered at the factory
witness test.]
2.
Applied voltage
3.
Induced voltage
h.
Leak
PART 3
EXECUTION
3.1
INSTALLATION
Electrical installations shall conform to IEEE C2, NFPA 70, and to the
requirements specified herein.
3.2
GROUNDING
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NOTE: Where rock or other soil conditions prevent
obtaining a specified ground value, specify other
methods of grounding. Where it is impractical to
obtain indicated ground resistance values, the
designer should make every effort, to obtain ground
resistance values as near as possible to the
indicated values.
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NFPA 70 and IEEE C2, except that grounds and grounding systems shall have a
resistance to solid earth ground not exceeding 5 ohms.
3.2.1
Grounding Electrodes
Provide driven ground rods as specified in Section 16302N UNDERGROUND
TRANSMISSION AND DISTRIBUTION. Connect ground conductors to the upper end
of the ground rods by exothermic welds or compression connectors. Provide
compression connectors at equipment ends of ground conductors.
3.2.2
Substation Grounding
Provide bare copper cable not smaller than No. 4/0 AWG, not less than 610 mm
24 inches below grade connecting to the indicated ground rods. Substation
SECTION 16361N
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