Regional Contracting Department (Code 201A), Fleet and Industrial Supply Center, Box 300, Pearl Harbor, HI 96860-5300

61 -- SUBSTATION UNIT, 12KV SOL N00604-96-Q-0016 DUE 122695 POC Contact Point: Ms. Paula Fukuda, 808/474-2397, ext. 209, Contract Specialist, Ms. Juliana Basile, Contracting Officer Substation unit, 12 KV. Secondary shall consist of (a) incoming transition section, (1) transformer section, (1) outgoing transition section, and (1) secondary main switchgear section. The substation shall be designed for indoor service. (A) Primary transition section: Provide transition section for cable connection between the existing primary switchgear and the new transformer, support cable connections between the high voltage air circuit breaker and transformer primary by porcelain insulators, and size brace cable to withstand the maximum available short circuit capacity of 500 MVA. (B) Transformer section: The transformer section shall be oil-insulated, rated 500 KVA, 55/65 degree C temperature rise, 60 HZ, 3-ph, 12 KV, 95 KV Bil primary connected delta to 240V secondary connected delta. Minimum tested impedance shall not be less than 5%. The transformer shall have (4) exter- nally operated 2-1/2%. Full capacity taps, (2) above and (2) below rated voltage. Transformer shall have stainless steel diagrammatic nameplate and nema standard maintenance devices. Oil-insulated transformers shall have an insulation system rated 55/65 degree C rise to allow the transformer to have a continuous overload capacity of 12% at rated voltage without exceeding 65 degree C winding temperature rise above 40 degree C maximum ambient. The insulating liquid shall be mineral oil conforming to ASTM D 3487, Type 11. It shall be tested in accordance with ASTM D 117, provide identification of transformer as 'non-PCB' on the nameplate. (C) Secondary transition section: Provide transition section for busbar connection to the transformer secondary. Support busbar connections between the transformer secondary and the low-voltage power circuit breaker by porcelain insulators, and size and brace bus to withstand the maximum available short circuit capacity of 500 MVA. (D) Secondary main switchgear section: ANSI/IEEE C37.20.1 for metal- enclosed, low-voltage power circuit breaker type, insulated for 600V for use on a 240V system, each steel unit forming part of the outgoing secion structure shall be a self-contained housing having individual breaker or instrument compartment, and a full height center and rear compartment for the bare busses and outgoing cable connections. Equip individual circuit breaker compartments with primary and secondary contacts, rails, disconnecting mechanism parts, and a cell interlock to prevent moving the removable element into or out of the ''connected'' position while the circuit breaker is closed. (1) Phase busses and connections-mount bus structure on insulates supports of high-impact, non-tracking, high quality insulating material and brace to withstand the mechanical forces exerted during short-circuit conditions when connected directly to an 11.5 KV system having maximum 500 MVA short circuit capacity. Bus bars shall be high conductivity copper having silver plated joints. Make bus bar connections from main buses to the incoming circuit breaker studs. Equip outgoing circuit breaker studs with mechanical clamp type cable connectors for the size of cable shown. Provide cable supports for outgoing cables. Wire secondary circuits including heater circuits, to terminal blocks. Terminal blocks shall be readily accessible for making external connections as required. (2) Ground bus. Provide a copper ground bus secured to each vertical structure and extending the entire length of the switchgear. Include provision for making the station ground connections. (3) Main circuit breaker 48 VDC. Electrically stored energy draw out type with an interrupting rating of not less than 50,000A at 240V. Breaker frame size shall be 1600A. Equip breaker with solid state trip device with long time, ground fault and adjustable short time, time tripping characteristics so that branch breakers will normally trip first on overload and at lower fault current levels. Key interlock main secondary breaker with the existing primary air breaker to prevent operation of the primary air breaker with the secondary main breaker closed. Equip electrically operate breaker with motor charged, stored energy closing mechanism to permit rapid and safe closing of the breaker against fault currents within the short time rating of the breaker, independent of the operators strength or effort in closing the handle. (a) Contacts: silver plated, multifinger, positive pressure, self- aligning type for auxiliary, control and main draw out contacts. (b) Each draw out braker shall be provided with four-position operation. Each position shall be clearly identified by an indicator on the circuit breaker front panel. (c) Connected position: Primary and secondary contacts are fully engaged. The breaker must be tripped before it can be racked into or out of this position. (d) Test position: Primary contacts are disconnected but secondary contacts remain fully engaged. Position shall allow complete test and operation of the breaker without energizing the primary circuit. (e) Disconnected position: Primary and secondary contacts are disconnected. (f) Withdrawn (removed) position: Places breaker completely out of compartment, ready for removal. (E) Provide heaters in each primary and secondary switchgear section. Heaters shall be rated 120V, shall have sufficient capacity to control moisture condensation in the compartments, and shall be sized 250W (minimum). Heaters shall be controlled by a thermostat and humidistat. NOTE: Dimensions for new switchgear sections are critical due to surrounding available space. Vendor shall furnish shop drawings for approval with its quotation. Dimensions of switchgear cannot exceed the following: width 78'' by height 90-1/2'' (Westinghouse porceline type), length 10.00''. Deliver one each to Pearl Harbor, Hawaii by 90 days after date of order. All responsible sources may request a copy of the solicita- tion. Prospective offerors are requested to provide with their request for the solicitation, their phone and facsimile numbers. Requests may be made via FAX 808/471-5750, or by writing the contracting office above. This is a 100 percent small business set-aside and note 1 applies.(0340)

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