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HomeMy WebLinkAboutB13-0437 PLANS Approved  Page 1 of 8  10/1/2013    Grid‐Tied with Battery Backup Photovoltaic System Details  System Layout    Operation Modes  Grid Connected  Normal Operation:  Grid feeds the Main Panel(s).  PV (photovoltaic) and/or Grid feed the Critical Load Panel.   Batteries are charged by solar and/or the grid.  Batteries Low:  Grid feeds the Main Panel(s).  Power from the Grid will feed the Critical Load Panels and charge  the Batteries.  Batteries are Restored by Grid or Solar:  Grid feeds the Main Panel(s).  Return to normal operation ‐ PV and/or Grid  feed Critical Load Panels.   By David Rhoades at 8:50 am, Oct 02, 2013 B13-0437   Page 2 of 8  10/1/2013    Excess Solar Power:  Critical Load Panels are fully served by PV and the Batteries are fully charged.  Excess PV power  will feed the Main Panel(s).  If all loads on Main Panel(s) are served, excess power will go out the grid.  Grid Outage  Normal Operation:  Main Panel(s) are out of power.  PV and Batteries feed Critical Load Panel until the grid returns  or the batteries are too low to maintain the critical loads.  Batteries Low:  Main Panel(s) are out of power.  PV and Batteries feed Critical Load Panels until the grid returns  or the batteries need to be charged by the generator.  Generator feeds the critical loads panel and PV is  shut down.   Batteries are Restored by Generator:  Main Panel(s) are out of power.   operation.  Excess Solar Power:  Main Panel(s) are out of power.  PV charges the batteries and feeds the Critical Loads Panels.   Critical Load Panel is fully served by PV and Batteries are fully charged, Outback Radians will shutdown  PV via relay.      Page 3 of 8  10/1/2013      Solar Installation Information  Vendor: Active Energies Solar LLC PO Box 7627 Avon, CO 81620 (970-376-3720/303-330-4880/info@activeenergies.com) Site: Marshall Residence 193 Beaver Dam Road Vail, CO 81657 All AC wiring to be completed by a Colorado licensed master electrician Panel Arrangement: 1 row if 16 panels on the upper south facing roof SunPower Inverter and Outback Radians to be mounted in rec room closet and batteries to be mounted in bedroom 2, new closet. PV AC disconnect and Critical Loads Panel disconnect located on the outside of the building. Minimum Designed Temperature: -40 F Average High Ambient Design Temperature: 121 F      Page 4 of 8  10/1/2013    Calculations  5.36kW System Size (STC) 16 SunPower X-21 335 BLK black solar panels @ 335watts 1 SunPower SPR 5000p-TL-1-240 inverter - 3 strings of 5/5/6 modules 3 Outback Radian GS8048 Off-Grid Solar Energy Management Devices 16 Full River DC400-6 6v 400AH batteries Fixed array tilt angle: 45” Array azimuth: 185” (where 180” is magnetic south) Estimated Production: 7,805 kWh/yr (not including shading) Maximum PV System Voltage: 690.7 Voc = 67.9V/module 67.9V x 6 modules = 407.4V Temperature correction factor Table 690.7(A) Temperature Coefficient (Voc) = -167.4mV/C (25 C - -40 K) = 65 C (-65 C x (-167.4mV/C) x 6 module) + 407.4V = 472.7V Temperature correction factor Table 690.7 For -40”F use 1.25 407.4V x 1.25 = 509.3V Maximum PV Source Circuit (String) Current: 690.8 (A)(1) Isc = 6.23A 6.23A x 1.25 = 7.8A Maximum PV Output Circuit (Array) Current (per inverter): 690.8 (A)(2) 7.8A x 3 strings = 23.4A Inverter Output Circuit Current: 690.8 (A)(3) 23A @ 240V Stand-Alone Inverter Input Circuit Current 690.8 (A)(4) 5000W 41Vdc 95% = 128A      Page 5 of 8  10/1/2013    Conductor Sizing  Panels to DC Disconnect/SunPower Inverter (per string): 7.8A x 125% = 9.8A 690.8 (B)(1) #10 USE-2 Table 310.16 40A (90”C column, see note 240.4(D)) Conduit fill adjustment Table 310.15 (B)(2)(a) For 4-6 Current Carrying Conductors use .8 9.8A .8 = 12.3A Temperature correction factor Table 310.16 40A x .58 = 23.2A SunPower Inverter to Critical Service Panel: 23A @ 240V 23A x 125% = 28.8A 690.8 (B)(1) #10 THWN-2 Table 310.16 30A (75”C column) Conduit fill adjustment Table 310.15 (B)(2)(a) No conduit fill adjustment Temperature correction factor Table 310.16 No temperature correction factor 30A Overcurrent Protection Device Critical Service Panel to AC Disconnect/Bypass Switch/Outback Combining Panel: Outback Radian Output Power 8,000Watts AC 8,000 W 240V= 33.3A 33.3A x 125% = 41.6A 690.8 (B)(1) 41.6A x 3 inverters = 124.8A 1/0 THWN-2 Table 310.16 150A (90”C column) No Conduit fill adjustment Table 310.15 (B)(2)(a) No temperature correction factor 50A Overcurrent Protection Device per Outback Radian specifications 150A Overcurrent Protection Device on Outback Combining Panel   Page 6 of 8  10/1/2013    Main Service Panel to Bypass Switch/AC Disconnect: 1/0 THWN-2 Table 310.16 150A (90”C column) No Conduit fill adjustment Table 310.15 (B)(2)(a) No temperature correction factor 150A Overcurrent Protection Device in Main Service Panel Main Service Panel to Outback Radians: Maximum Input Power per inverter 50A AC (per manufacturer) #6 THWN-2 Table 310.16 55A (75”C column) No Conduit fill adjustment Table 310.15 (B)(2)(a) No temperature correction factor 50A Overcurrent Protection Device per Outback Radian specifications Battery Bank to Outback Radian: Continuous Battery Charge Output 115A AC (per manufacturer) 8000W 41Vdc 90% = 128A 690.8 (A)(4) 128A x 125% = 160A 690.8 (B)(1) 2/0 RHW-2 Battery Cables Table 310.16 175A (75”C column) 175A Overcurrent Protection Device No conduit fill adjustment No temperature correction factor Conductors may be oversized for voltage drop  Page 7 of 8                             10/1/2013    Page 8 of 8   10/1/2013    Radian Load Center Drawing NotShown -CAT5CommunicationCable betweenOutbackRadians,Mate3 andHUB -BatteryTemperatureSensorfrom OutbackRadianMastertothe BatteryEnclosure Gutter OutbackRadianMaster OutbackRadianMaster LoadCenter 50 Ground 50 ToCritical ToMain 175 175 Outback RadianSlave1 OutbackRadianSlave1 LoadCenter 50 Ground 50 ToCritical ToMain 175 175 To Batteries To Batteries Outback RadianSlave2 OutbackRadianSlave2 LoadCenter 50 Ground 50 To Critical ToMain 175 175 To Batteries ToRelay ~25' #6NM-B ~10' #6NM-B ~45' 2 2#2/0THW 1#6 GTHHN NottagotterWiringLegend To BatteriesToCriticalToMain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 SLOT FOR T-BOLT OR 1 4" HEX HEAD SCREW 1.385 SLOT FOR BOTTOM CLIP SLOT FOR 3 8" HEX BOLT 1.875 3.000 1.207 1.728           