Design Problem 4. Design a pure grid-tie, PV system for the Fire Island Lighthouse.

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1 Design Problem 4 Design a pure grid-tie, PV system for the Fire Island Lighthouse. We have to put the system someplace other than the lighthouse (historical building) Given their load (kwh) use, how big a system would generate that much? Where could we put the system? The distance between the parking lot and the lighthouse is 650 The south roof at the parking lot is 55 x 16 The parking lot is 80 x 165 What kind of mounting system would you use? Pick PV modules Stay back from trees to avoid shade. Use Satcon or Xantrex inverter Distance from PV to inverters = 100 The building voltage is 3 phase, 208 V How many kwh will this produce? Do the wire sizing for each part of the system: a. PV to roof-top j-box/combiner b. j-box/combiner to inverter c. inverter to main circuit box Make a To Do list for this job

2 kw Photovoltaic Inverters PowerGate inverters offer market-leading reliability, efficiency and ease-of-use for large-scale grid-connected photovoltaic systems. A single-enclosure solution, the utility-grade PowerGate incorporates a high-efficiency transformer and both AC and DC switchgear that disconnect the inverter at night, minimizing tare losses. A highly efficient MPPT tracking algorithm and intelligent wake-up routine further maximize net energy harvest. The PowerGate is certified to UL-1741 and is available with a variety of local and remote data monitoring options. Utility-Grade Design 20-year design life Reverse convection top-air entry Sloped roof 25-year film-type capacitors 5-year standard warranty Easy Installation and Use Single enclosure minimizes field wiring Integrated highefficiency transformer Optional integrated sub-array combiner Internal AC and DC switchgear Top and bottom cable entry Top-lifting eye-bolts and forklift base Superior Energy Harvesting Industry leading efficiency Automatic night disconnect minimizes transformer losses High-speed MPPT Soft charge network minimizes in-rush current and nuisance trips Wide input voltage range Remote and Local Data Monitoring 4-line alphanumeric LCD display Optional PV View web enabled data monitoring Optional PV Zone sub-array performance monitoring RS485 Modbus Safety Certified to UL 1741 Integrated DC contactor for array isolation Surge withstand testing to ANSI and IEEE PV Sub-arrays DC Disconnect See Note 2 See Note 3 See Note 4 AC Breaker n See Note 1 DC Surge Protection Ground Fault Protection Control 3 See Note 5 AC Surge Protection To Grid Notes: 1. Optional fused sub-array combiner simplifies array wiring and allows optional PV-Zone sub-array monitoring 2. Contactor provides backfeed protection and automatic array fault isolation 3. Integrated high-efficiency transformer 4. Integrated AC contactor opens at night and minimizes standby losses 5. Pre-charge circuit minimizes in-rush current and nuisance trips Data Monitoring Options: Direct RS 485 Modbus PV-View & PV-Zone web monitoring Revenue grade kwhr metering Meteorological Consult SatCon for details Copyright 2006 by Satcon Power systems, All rights reserved Page 1 of 2

3 Specifications Model Specific Power (kwac) Model # AE PV AE PV Voltage Suffix D F E A D F A AC Output Voltage (L-L Vac) / Nom Current/Phase (Amps) Max Fault Current/Phase (Amps) CEC Efficiency (%) 92.5 NA Nominal DC Current (Amps) Optional PV Sub- Array Combiner (# of fused strings) 2 x 75 Amps 3 x 100 Amps Max. Weight (lbs) [kg] Max Heat Dissipation (kbtu/hour) 1300 [591] [808] 9.3 Power (kwac) Model # AE PV AE PV Voltage Suffix D F A D F A AC Output Voltage (L-L Vac) Nom Current/Phase (Amps) Max Fault Current/Phase (Amps) CEC Efficiency (%) 95 NA Nominal DC Current (Amps) Optional PV Sub- Array Combiner (# of fused strings) Max. Weight (lbs) [kg] 6 x 100 Amps 2600 [1180] 6 x 100 Amps 3250 [1475] Max Heat Dissipation (kbtu/hour) Power (kwac) Model # AE PV AE PV AE PV-A Voltage Suffix D F A A D A AC Output Voltage (L-L Vac) Nom Current/Phase (Amps) Max Fault Current/Phase (Amps) CEC Efficiency (%) 95 NA NA 95 Nominal DC Current (Amps) Optional PV Sub- Array Combiner (# of fused strings) 9 x 100 Amps 12 x 100 Amps 30 x 100 Amps Max. Weight (lbs) [kg] 3500 [1600] 5650 [2570] 5400 [2455] Max Heat Dissipation (kbtu/hour) Specifications All Models Nominal MPP DC range (Vdc) Max MPPT Range (Vdc) Max Voc (Vdc) 600 Nom. Frequency Range (Hz) AC Voltage Range Setpoints (%) +/- 10 Power Factor 1 Harmonic Distortion (% THD) <3 Peak Efficiency (%) Cooling Fan Forced Noise level (dba) <65 Ambient Temp. range (degc) -20 to 50 Max amb. temp. at Pnom (degc) 50 Enclosure rating NEMA 3R Enclosure Construction 11 gauge Powder Coated Steel - Seismic Zone 4 Note: To achieve 295 volts Low tap must be specified at time of order. Unit will derate if grid voltage is < nominal. Dimensions: Please see model specific data sheets. All specifications subject to change without notice. SatCon Power Systems Ph Datasheet AEAll_Models_2 Page 2 of Harrington Court Fx Burlington, ON L7N 3P3 pvsales@satcon.com Canada Relative humidity(%) 95 Altitude (ft) [m] 6000 [1830] Display LCD 4 Line x 20 Computer interface / type RS232, RS485 Communicaton Protocol Modbus Standard Warranty 5 Year Certification UL 1741 Compliances IEEE 929, 1547, 519, ANSI Optional Features PV View Remote Monitoring PV Zone Sub-Array Monitoring Environmental monitoring External revenue grade meter Ground Fault Interrupt

4 PV Inverter High Voltage Commercial Scale Power Conversion Center Utility Interactive Renewable Energy Utility interactive, three-phase inverter, with models ranging from 5 kw to 225 kw. Multiple inverters may be paralleled for larger power installations. Designed for cost-effectiveness, high performance, easy installation, and reliability. Advanced MPPT technology maximizes PV array output (not for use with batteries). Revolutionary switching technology utilizes insulated gate bi-polar transistors (IGBT), greatly reducing power losses during the conversion process. Meets all applicable UL, IEEE, and NEC codes. Automatic operation includes start-up, shut-down, self-diagnosis, and fault detection. Xantrex Technology Inc. Headquarters 8999 Nelson Way Burnaby, British Columbia Canada V5A 4B Toll Free Fax th Street NE Arlington, Washington USA Toll Free Fax Features Efficient design, with over 95% peak efficiency for the inverter, and overall efficiency, including transformer losses, in excess of 93%. Digital Signal Processor (DSP) based controls with self-diagnostics and LCD for display of operating status. Inverter shut off and reset toggle switch. Over- and under-voltage and frequency protection, shutting down the inverter in compliance with UL1741. Anti-islanding protection - prevents back-feeding inverter-generated power to the grid in the event of a utility outage. User definable power tracking matches the inverter to the array, as well as adjustable delay periods to customize system shut-down sequences. Options Variety of system accessories for ease of system installation, including combiner boxes, isolation transformers, disconnect switches, etc. Graphical user interface software for real time communication and control. Complete inverter kits, incorporating all required accessories for NEC code compliant installation, are available Xantrex Technology Inc. All rights reserved. Xantrex is a trademark of Xantrex International. P/N Rev A Printed in USA

5 PV Inverter High Voltage Commercial Scale Power Conversion Center Electrical Specifications Models PV5 PV10 PV15 PV20 PV30 PV45 PV100 PV225 Continuous Power Rating 5 kw 10 kw 15 kw 20 kw 30 kw 45 kw 100 kw 225 kw Nominal AC Voltage 208 VAC 208 VAC 208 VAC 208 VAC 208 VAC 208 VAC 208 VAC 208 VAC Three-phase, +10% / -12% Nominal AC Frequency 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz Hz / -0.7 Hz Line Power Factor > 0.99 > 0.99 > 0.99 > 0.99 > 0.99 > 0.99 > 0.99 >0.99 Above 20% rated power Maximum AC Line Current 15.4 amps AC 30.8 amps AC 46.3 amps AC 61.7 amps AC 94 amps AC 143 amps AC 316 amps AC 625 amps AC AC Current Distortion < 5% THD < 5% THD < 5% THD < 5% THD < 5% THD < 5% THD < 5% THD < 5% THD At rated power Max. Open Circuit Voltage 600 VDC 600 VDC 600 VDC 600 VDC 600 VDC 600 VDC 600 VDC 600 VDC Power Tracking Window Range 330 to 600 VDC all models Max. DC Input Current 15.9 amps DC 31.9 amps DC 47.8 amps DC 63.8 amps DC 100 amps DC 150 amps DC 319 amps DC 710 amps DC Max. Ripple Current < 5% < 5% < 5% < 5% < 5% < 5% < 5% < 5% % of rated current Peak Inverter Efficiency > 93% > 95% > 95% > 95% > 95% > 95% > 95% > 95% Standby Tare Losses < 30 watts < 30 watts < 30 watts < 30 watts < 30 watts < 30 watts < 90 watts < 90 watts General Specifications Temperature Range Ambient -4 F to 122 F (-20 C to 50 C) Storage -40 F to 122 F (-40 C to 50 C) Enclosure Environmental Rating NEMA4 NEMA4 NEMA4 NEMA4 NEMA3R NEMA3R NEMA3R NEMA 3R Enclosure Galvaneal folded steel enclosure Weight 75 lb 115 lb 160 lb 160 lb 260 lb 260 lb 1140 lb 2150 lb 34 kg 52 kg 73 kg 73 kg 118 kg 118 kg 518 kg 977 kg Dimensions (H x W x D) 20x16x13 26x16x12 28x24x15 28x24x15 54x36x19 54x 36x19 83x76x20 89x102x27 51x41x33cm 66x41x30cm 71x61x38cm 71x61x38cm 137x91x48cm 137x91x48cm 211x193x51cm 226x259x68cm Altitude 6,600 (2,012 m) Relative Humidity 0 to 95% 0 to 95% 0 to 95% 0 to 95% 0 to 95% 0 to 95% 0 to 95% 0 to 95% non-condensing Array Configuration Monopole, negative grounded Features & Options Cooling Method Protective Functions User Display AC Disconnect DC Disconnect Isolation Transformer Combiner Enclosures Communications Software PV5: natural convection cooling PV10 PV225: forced convection cooling AC over / under voltage, AC over / under frequency, ground over current, over temperature, AC and DC over current, DC over voltage Standard - LCD, four-line, twenty-characters, with on/off toggle switch (LED status indicators, only, on PV5) Optional - NEMA3R wall mount enclosure, load break rated; Standard and integral to inverter assembly for PV100 and PV225 Optional - NEMA3R wall mount enclosure, 600 VDC load break rated; Standard and integral to inverter assembly for PV100 and PV225 Optional - High efficiency, NEMA3R wall or floor mount enclosure Optional - 10 or 12 pole, with or without diodes, NEMA3R wall mount enclosure Optional - Serial communications and control software Regulatory Approvals Listed to UL Standard 1741, UL File No. E Specifications subject to change without notice.

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