Naval Surface Warfare Center, Carderock Division, 9500 MacArthur Blvd., West Bethesda, MD 20817-5700

61 -- BATTERY CHARGERS SOL N00167-97-R-0038 DUE 060697 POC Roger N. Branstiter (301) 227-3303 Please note that the following questions have been asked and the answers are provided below. Question 1 -- In the discussion of the battery charger configuration there is mention of one charge/discharge unit per cabinet or two charge/discharge units per cabinet. Is the packaging of one or two unit per cabinet the contractor's option. Answer -- Yes, it is the option of the offeror to propose one or two units per cabinet. Question 2 -- In the discussion of charge method it mentions "modified constant potential or pulse method". Is it the offerors option as a design function or is this selection by the user of the two available methods defined by the user? Answer -- The offeror has the option as a design function. Question 3 -- Please explain the statement "Fault Protection (each Fault)"? Answer -- Within the context of the instrumentation unit, each fault that shuts down the charger shall have an indicator to identify the cause of the shutdown. The type of indicator is up to the offeror. Question 4 -- Please indicate the level of leakage to ground that would be construed as a "Ground Fault"? Answer -- We measure ground fault using voltage to ground. A ground of less than 0.1 VDC on a 150 VDC system is the threshold for ground fault. If an offeror choses to measure resistance, a ground of less than 1,000,000 ohms (1 MegOhm) is the tyhreshold for ground fault. This is all of the questions. Please note that proposed prices should reflect FOB DESTINATION. As a result of the clarifications made by the amendment, a new closing date and time for receipt of proposals is established at 3 PM EDT, 06 June 1997 to the Naval Surface Warfare Center, Carderock Division, Bldg 121, Room 214, Code 3321, Roger N. Branstiter, 9500 MacArthur Blvd, West Bethesda, MD 20817-5700. (0149)

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