Abstract: . . .  ac load applied thus providing operating conditions that are reasonably uniform from day to day. Outline of System Test Procedure The following steps and brief discussion are an attempt to outline the basic steps used during the characterization and experimental optimization of the FireFly 600 system. Initial Preparations and Component Tests: 1) Install and position photovoltaic system in unobstructed area with array tilted at desired orientation, typically at a latitude tilt-angle. 2) Inspect system . . .
. . .  applied thus providing operating conditions that are reasonably uniform from day to day. Outline of System Test Procedure The following steps and brief discussion are an attempt to outline the basic steps used during the characterization and experimental optimization of the FireFly 600 system. Initial Preparations and Component Tests: 1) Install and position photovoltaic system in unobstructed area with array tilted at desired orientation, typically at a latitude tilt-angle. 2) Inspect system to ensure . . .
. . .  traceability to NIST through Sandia’s Primary Standards Laboratory. The LI-COR LI-1800 spectral radiometer used to measure the outdoor solar spectrum during tests is calibrated annually by LI-COR Incorporated with calibration traceable to NIST through their secondary FEL lamps. 1 D. L. King, B. R. Hansen, and J. K. Jackson, “Sandia/NIST Reference Cell Calibration Procedure,” 23rd IEEE PVSC, May 1993, pp1095-1101. 2. C. R. Osterwald, et al., “World Photovoltaic Scale: International Reference Cell Calibration . . .
. . .  concentration measurement inside the FireFly 600 battery enclosure, near full state-of-charge with battery temperature about 35 °C. Note: A hydrogen sensor voltage of 4.8 V corresponded to a hydrogen concentration of 3.8%, and 0.9 V corresponds to 0% hydrogen. FireFly 600 Battery Enclosure Test Nationwide 440 Ah Battery Bank 30 Avg. Battery Voltage 3.1 V = 2% H2 T = 41 C 3.0 Hydrogen Concentration 29 2.5 2.1 V = 1% H2 28 Insert Battery Box 1.5" Lid Spacer 2.0 27 1.5 26 0.9 V = 0% H2 1.0 25 0.5 24 5.00 5.75 . . .
. . .  measurement inside the FireFly 600 battery enclosure, near full state-of-charge with battery temperature about 35 °C. Note: A hydrogen sensor voltage of 4.8 V corresponded to a hydrogen concentration of 3.8%, and 0.9 V corresponds to 0% hydrogen. FireFly 600 Battery Enclosure Test Nationwide 440 Ah Battery Bank 30 Avg. Battery Voltage 3.1 V = 2% H2 T = 41 C 3.0 Hydrogen Concentration 29 2.5 2.1 V = 1% H2 28 Insert Battery Box 1.5" Lid Spacer 2.0 27 1.5 26 0.9 V = 0% H2 1.0 25 0.5 24 5.00 5.75 6.50 7.25 . . .
. . .  Incorporated with calibration traceable to NIST through their secondary FEL lamps. 1 D. L. King, B. R. Hansen, and J. K. Jackson, “Sandia/NIST Reference Cell Calibration Procedure,” 23rd IEEE PVSC, May 1993, pp1095-1101. 2. C. R. Osterwald, et al., “World Photovoltaic Scale: International Reference Cell Calibration Program,” Prog. in Photovolt: Res. Appl. 7, 287-297 (1999).  . . .
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