[8.3/15 kV gnd Y] [15/26 kV gnd Y] [27/34.5 kV gnd Y], conforming to NEMA
C37.42. Type [K] [T] fuses conforming to NEMA C37.42 with ampere ratings
[as indicated] [equal to 150 percent of the transformer full load rating].
Open link type fuse cutouts are not acceptable. [Provide heavy duty open
drop-out type, rated 15 kV, 200 Amp, 7,100 Amp I.C. (Sym.).]
2.14
CONDUIT RISERS AND CONDUCTORS
**************************************************************************
NOTE: Choose Section 16302N for Navy projects and
Section 16375A for other projects. For
LANTNAVFACENGCOM, use Section 16303N, "Underground
Electrical Work" in lieu of Section 16302N.
**************************************************************************
The riser shield shall be PVC containing a PVC back plate and PVC extension
shield or a rigid galvanized steel conduit, as indicated, and conforming to
UL 6. Provide conductors and terminations as specified in[ Section 16302N
UNDERGROUND TRANSMISSION AND DISTRIBUTION][ Section 16375A ELECTRICAL
DISTRIBUTION SYSTEM UNDERGROUND.]
2.15
TRANSFORMER (OVERHEAD-TYPE DISTRIBUTION)
**************************************************************************
NOTE: Use the following guidelines for specifying
transformers.
1. Use IEEE C57.12.00, Figure 3 (a), voltage
designations, such as 4160 V - 120/240 V.
2. Select impedance value in accordance with
technical note under paragraph entitled "Specified
Transformer Losses."
3. Fully self-protected transformers shall not be
used.
**************************************************************************
a.
NEMA C57.12.20.
b.
Single phase, self-cooled, 65 degrees C. continuous temperature
rise, two winding, 60 Hertz.
c.
Insulating liquid:
(1) Mineral oil per ASTM D 3487, Type II, tested in accordance
with ASTM D 117.
(2) Provide identification of transformer as "non-PCB" on the
nameplate.
(3) Do not provide insulating liquids containing polychlorinated
biphenyls (PCB) or tetrachloroethylene (TCE) or perchloroethylene.
d.
Ratings:
(1)
kVA:
[_____].
(2)
BIL:
[95] [75] [60] kV.
SECTION 16301N
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