numerals placed near the low-voltage bushings.
2.15.1
Specified Transformer Losses
**************************************************************************
NOTE: Steps to specifying transformer losses.
1. Print Tables OH-1, OH-2, OH-3, and EC-1 or EC-2
as applicable (directions included at the front of
this specification).
2. Obtain energy cost for the specific activity
from the cognizant EFD or PWC. Energy costs should
be based on the cost of energy without the demand
charge factors scaled in. Use Table EC-1 for energy
costs at the LANTNAVFACENGCOM activities indicated.
Use Table EC-2 for energy costs at the
SOUTHNAVFACENGCOM activities indicated. (Additional
tables will be added for other EFD's as the
information becomes available.
3. Use Tables OH-1, OH-2, and OH-3 to specify
losses and impedances for transformers based on
energy cost range, and transformer primary and
secondary voltages.
4. Perform fault current calculations to verify
that distribution equipment is coordinated with
impedance specified.
**************************************************************************
No-load losses (NLL) in watts at 20 degrees C, and load losses (LL) in
watts at 85 degrees C, shall be as follows:
NAME
KVA
"NLL"
"LL"
[T1]
[_____]
[_____]
[_____]
[T2]
[_____]
[_____]
[_____]
The values for the specified losses shall be used for comparison with the
losses determined during the routine tests. If the routine test values
exceed the specified values by more than the tolerances allowed by Table 19
in IEEE C57.12.00, the transformer is unacceptable.
2.16
POLE TOP SWITCH
**************************************************************************
NOTE: In areas where coating of ice on the switch
exceeds 9.525 mm 3/8 inch, other type of switch
should be considered. Consult appropriate EFD/EFA
Code CI44 for the type of switch required.
**************************************************************************
Pole top switch shall comply with IEEE C37.30, shall be [vertical]
[horizontal] type switches, three-pole gang operated, with a padlock
arrangement for locking in both open and closed positions. Steel parts
shall be hot-dip galvanized. Operating rods shall be isolated from the
switch by an insulating link or section located as close to the switch as
possible. [Switch shall be designed [for double crossarm mounting] [and]
SECTION 16301N
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