SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System December 2011
I. Full-Capacity Voltage Taps: Four 2.5 percent taps, 2 above and 2 below rated high voltage;
with externally operable tap changer for de-energized use and with position indicator and
padlock hasp.
J. High-Voltage Switch: 200 A, make-and-latch rating of 10-kA RMS, symmetrical, arranged for
loop feed with 3-phase, 4-position, gang-operated, load-break switch that is oil immersed in
transformer tank with hook-stick operating handle in primary compartment.
K. Primary Fuses: 150-kV fuse assembly with fuses complying with IEEE C37.47.
1. Provide Bay-O-Net oil-immersed expulsion fuses in series with oil-immersed currentlimiting
fuses. The Bay-O-Net expulsion fuses shall be RTE Bay-O-Net fuse catalog
numbers 4000353C** or 4038108C** or equivalent. The current-limiting fuses shall be
RTE ELSP, or equivalent, and shall be coordinated with the Bay-O-Net fuses to protect
the transformer from faults beyond their interrupting rating. In order to eliminate or
minimize oil spills, the bayonet fuse assembly shall include an oil retention valve inside
the housing, which closes when the fuse holder is removed and an external drip shield.
Warning shall be conspicuously displayed within the high-voltage compartment
cautioning against removing or inserting fuses unless the load-break switch is in the open
position and the tank pressure has been released.
L. Surge Arresters: Rated 18 kV, fully shielded, dead-front, metal-oxide-varister, elbow type with
resistance-graded gap, suitable for plugging into inserts. Provide three arresters for each
transformer provided.
M. High-Voltage Terminations and Equipment: Dead front with six high-voltage bushing wells for
dead-front bushing-well inserts, complying with IEEE 386 and including the following:
1. Bushing-Well Inserts: 200 amperes, 15 kV Class, one for each high-voltage bushing
well.
2. Surge Arresters: Dead-front, elbow-type, metal-oxide-varistor units.
3. Parking Stands: One for each high-voltage bushing well.
4. Portable Insulated Bushings: Arranged for parking insulated, high-voltage, load-break
cable terminators; one for each primary feeder conductor terminating at transformer.
5. Loop feed switch handle.
6. Tap changer handle.
7. Ground pads.
N. Low-Voltage Terminations and Equipment: Low-voltage compartment shall contain lowvoltage
bushings, with staggered NEMA spade terminals, as outlined in IEEE C57.12.34,
Section 9.7.3, including a fully insulated Xo bushing (with removable ground strap),
Accessories, and ground pads.
O. Accessories:
1. Drain Valve: 1 inch globe valve in secondary compartment to serve as oil drain valve,
bottom filter press connection, and equipped with sampling valve located on the side of
the drain valve.
2. One-inch globe valve to serve as top filter press connection & vacuum pump connection.
3. Externally mounted dial-type thermometer.
4. Liquid-level gage.
Contract 44577 KW Annex – Rev. D 44577-CSI-SPEC-001 261200 - 4