Naval Air Warfare Center Aircraft Division, Contracts Department, Code 2.3.3000B129-2 Lakehurst, N.J. 08733-5083

17 -- RESISTIVE LOAD BANK SOL N68335-95-RFI-507 DUE 031595 POC Jack Fackenthal Code 2131000B129-2, (908) 323-7423. The Naval Air Warfare Center Aircraft Division Lakehurst is seeking potential sources, industry comments, and product information for the acquisition of a 0 to 80 kilowatts AC resistive load bank. The load bank develops an electrical load, applies the load to an AC generator and dissipates the resultant power output. The load bank will be used on the A/E37T-26/26A test cell with specific adapter assemblies to perform immediate level testing of auxiliary power units (APU). An APU is a small turbine engine that drives the aircraft generator and provide bleed air. Current schedule for the APU's to be tested with this load bank is: APU 1) GTCP95-2/3; load setting 60Kw, 2) T-62T-11; load setting 10, 20 &45kw, 3) T-62T-27; load setting 17, 34 & 69kw, 4) GTCP36-201; load setting 40kw, 5) T-62T-40-1, load setting 10 &20kw, 6) GTCP36-201C; load setting 40kw, 7) GTCP36-150; load setting 20kw. Vendors are invited to visit a test cell to learn more about the A/E37T-26/26A and it's load bank interface requirements. Site visit should be arranged with Mr. Ronald Chang (908) 323-4139 or Mr. Vincent Gioffre (908) 323-4245. No visit will be arranged after 28 February 1995. Load bank at a minimum shall meet the following specifications: I) General description and operating conditions: A) The load bank shall be permanently mounted on an outdoor pad in close proximity to the T26 test facility. The operating temperature range shall be -20 to 120 degrees F minimum. The load bank shall interface with a remote indoor control panel through two (2) electrical cables. The first cable shall be 8 ft (min) in length and run from the control panel to the test cell cab bulkhead. The second cable shall be 30 ft (min) in length and run from the bulkhead to the load bank interface panel. Both cables shall be properly shielded from electrical noise. Control panel at a minimum shall include: 1) Power on/off switch, 2) Load range selection capability between 0 and 80kw at 1kw discretion, 3) Blower on/off indicator light, 4) Load dropout warning light, 5) Cannon plug type connector (rear mounted) for electrical cable interface, 6) Remote panel shall meet NEMA indoor enclosure standards with dimensions suitable for installation into a 5.2 inch (max) vertical space of an EIA standard 19 inch rack frame, 7) Controls shall operate from power supplied by the load bank assembly., 8) Remote control front panel color shall be commercial equivalent to MIL-STD 808 F-400, CS, Type 2. B) Construction: 1) Resistive load element shall be corrosion resistant. Element shall be forced air cooled with over temperature protection. 2) Enclosure shall meet NEMA 3 or NEMA 4, weatherproof, outdoor type construction, mounted on skids with fork lift provisions. 3) Overall weight shall not exceed 5 ft(W) x 5 ft(L) x 5 ft (H) envelope. 4) Load bank unit shall be equipped with fixed louvers for blower intake air and louvered doors for exhaust air. 5) Control components and indicators mounted on the load bank shall be enclosed by a lockable door with rubber gasket to protect from the weather. 6) Electrical components shall be atandard replaceable items which meets applicable underwriters laboratories standards. 7) All other components shall be of high grade commercial standards. 8) Load bank exterior color shall be commercial equivalent to FED-STD 595, color #19725 (white). C) Cooling system: 1) System cooling shall be adequately sized to dissipate the maximum load continuously within maximum exhaust air temperature. 2) Adequate caution/warnings for all hot surfaces and venting areas shall be clearly displayed. 3) Blower motor assembly shall be self contained with separate circuit breaker protection. Note: It is desirous to have the control and blower circuitry powered from the load bank (i.e incorporation of a step down transformer with load bank power being acquired from the APU generator). D) Electrical requirements: 1) Load bank shall at a minimum provide 208 volts line to line, 400 Hz, 3 phase, 4 wire, wye connection capabilities. 2) Load settings shall be balance with continuous duty cycle. 3) Load bank shall be an AC resistive type with a power factor (pf) equal to 1. 4) Load bank shall interface with connector MS25486H. II Documentation: A) Commercial operating and maintenance manual shall be made available and containa minimum: 1) Installation/interface instructions, 2) description of operation and controls, 3) Complete wiring and schematic diagram., 4) Recommended spare parts list, including vendor's part numbers and sources. III Test Requirements: The Government may perform a first article test (FAT) to ensure the load bank meets the aforementioned specifications. It is the intent that corrective measures for deficiencies uncovered during FAT will be incorporated into the design prior to production. Inspection site and test procedure shall be provided at a later date. Respondents are cautioned that a formal solicitation may not necessarily result from this request. Any comments you provide may or may not be included in the formal solicitation. The Government will not pay for any information nor will the Government compensate any respondent for any cost incurred in developing the information for the Government. Response is requested not later than 15 March 1995. Comments and/or information may be submitted to Naval Air Warfare Center Aircraft Division, Contracts Department, Building 129-2, Attention: Code 213JF, Lakehurst, NJ 08733-5083. (0037)

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