(3)
Primary voltage:
[_____] kV.
(4)
Secondary voltage:
[_____] volts.
(5)
Minimum Tested Impedance at 85 degrees C:
[____] percent.
[e.
Single-phase connections:
(1)
Connect primary:
[Phase-to-phase] [Phase-to-ground].
(2)
Provide transformer with [_____] high voltage bushing(s).]
[f.
Three-phase connections:
(1)
Connect primary:
[Grounded wye] [Ungrounded wye] [Delta].
(2) Connect secondary: [Grounded wye] [Delta], for [_____] volt,
three phase, [_____] wire service.
(3)
Provide transformer with [_____] high voltage bushings.]
g.
Taps:
(1) Provide four 2 1/2 percent full capacity taps, 2 above and 2
below rated primary voltage. Tap changer shall have external
handle.
**************************************************************************
NOTE: The "series-multiple voltage-changing switch"
would be in the primary winding of the transformer
and is for dual-voltage systems. It is normally
used when a base is planning a voltage upgrade of
its primary distribution system or when there are
multiple systems on base and they would like the
transformer to be interchangeable. Caution: If
this option is indicated, the BIL level must be
specified for the higher voltage and actual
transformer losses would have to be coordinated with
multiple manufacturers and be specified to obtain an
energy efficient transformer.
**************************************************************************
[h.
Externally operated Series-Multiple Voltage-Changing Switch.]
i.
Corrosion Protection:
**************************************************************************
NOTE: In hostile environments, the additional cost
of stainless steel tanks and covers may be justified.
**************************************************************************
[Transformer tanks and covers shall be corrosion resistant and
shall be fabricated of stainless steel conforming to ASTM A 167,
Type 304 or 304L.] Paint coating system shall comply with NEMA
C57.12.28 regardless of tank and cover material. Finish coat
shall be light gray, ANSI color No. 70.
j.
Show transformer kVA capacity using 65 mm 2 1/2 inch Arabic
SECTION 16301N
Page 22
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