UDC ZERO ENERGY VISTOR CENTER

System Components Solar Array –Primary Power Generator –Array consists of 12 BP SX3190B Solar Modules

System Components BP SX3190B –190 Watts, 24.4 Vdc –25 year warranty

System Components Charge controller –Regulates charging current from the solar array to the battery –FlexMax 60 Outback Charge Controller

System Components FlexMax 60 Outback Charge Controllers –MPPT charge regulation can increase Array production by as much as 30% –Extensive electronic protection against reverse polarity, high temperature and over current

System Components Battery bank –Supplies a stable power source since the Solar Array current varies by time of day and weather condition –8A8D SLA AGM Deka Battery

System Components 8A8D SLA AGM Batteries –12V 265 AH of capacity at the 20Hr rate –High capacity, reliable, durable, and deep cycle capacity for heavy demand applications

System Components Inverter –Converts power stored in batteries from Direct Current (DC) to Alternating Current (AC) for use with standard equipment –Also allows excess power generated to be sold back to the utility grid –GVFX 3648 Outback Inverters

System Components GVFX3648 Outback Inverter –Simple modular design for true sine wave power –Grid interactive or standalone capability –2 units stacked for 120/240 VAC

System Components Wind Power Usually not a primary power source Complements solar power –Reduces depth of discharge during inclement weather –Fairly inexpensive depending on mounting option AIR Breeze 48vdc wind turbine

System Components AIR Breeze 48vc –35Kw monthly output in 12mph avg. wind –Built in charge regulation

System Design

Off Grid/Utility Tie with Battery Back Up –Allows for Stand Alone operation –Also allows for buying and selling power to and from the Utility

Inspection

Solar Array –Check physical condition of solar modules Unbroken glass Relatively clean Straight frames with no corrosion –Verify module frame grounding –Check mounting hardware for loose fasteners –Confirm that all module junction box covers are present –Electrical tests Open circuit voltage for each module or module string Short circuit current for each module or module string Variations in excess of 10% should be investigated

Maintenance

Scheduled Maintenance –Annual maintenance Schedule in the fall so that the system will provide optimum performance in the winter months –Clean solar array if necessary Water and mild soap are recommended Do not use any abrasives –Perform complete inspection See previous section Make adjustments or repair as necessary