e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, ８・５ － Field Inspection Items Visual inspection and verification test of structure and quantity （ 1 ） Photovoltaic module （ 2 ） Support structure for photovoltaic module （ 3 ） Power conditioner （ 4 ） Display system （ 5 ） Junction box, Interconnection switchboard, MCB Equipment installation and wiring/connection inspection （ 1 ） Equipment installation inspection （ 2 ） Wiring/connection verification test Insulation resistance test （ 1 ） Wiring between photovoltaic modules （ 2 ） Wiring between various equipment Open-circuit voltage test/earth resistance test （ 1 ） Open-circuit voltage of photovoltaic module （ 2) Earth resistance when systems are interconnected

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, － Visual inspection and verification test of structure and quantity （ 1 ） Photovoltaic module visual inspection and power output test ItemInspection detailsMeans of inspectionResult Appearance ・ Check if there is any damage, cracking or deformation in the photovoltaic module appearance. Visual inspection ・ Confirm that photovoltaic modules are appropriately arranged. Consistent with Tech. Spec. drawings Power output ・ Check against manufacturers’ shop inspection records on behalf of conducting field output tests.

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, （ 2 ） Visual inspection of Support structure for photovoltaic module array ItemInspection detailsMeans of inspectionResult Appearance There is no deformation or strain.Visual inspection There is no peeling of galvanized steel welded to support structure. Visual inspection The support structure is appropriately arranged. Consistent with Tech. Spec. drawings Installation There is no loosening in screws, bolts and fixtures. Visual inspection Bolt tightening is appropriately conducted.Visual inspection Wiring There is no loosening in the connections between photovoltaic modules. No loosening is confirmed by touching and visually. Exposed cables behind the photovoltaic module are wired in order. Visual inspection Cables are supported by fixing devices.Visual inspection Earth cables are connected to the array support structure. Visual inspection － Visual inspection and verification test of structure and quantity

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, （ 3 ） Power conditioner ItemInspection detailsMeans of inspectionResult Appearance There is neither peeling of surface coating nor deformation. Visual inspection Installation There is no loosening in screws, bolts and fixtures. Visual inspection Wiring P/N （ +/- ） are correctly connected at the power conditioner input. Visual inspection, tester R/S/T are correctly connected at the three- phase output. Visual inspection, tester Low voltage cable +/- are correctly connected at its input/output. Visual inspection, tester Earth cables are connected.Visual inspection Cables are connected in order.Visual inspection The panel internal is clean.Visual inspection － Visual inspection and verification test of structure and quantity

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, （ 3 ） Power conditioner ItemInspection detailsPerformanceResultRemarks Model/type Check the type of power conditioner against Tech. Spec. Acceptable Protective relay test (at shop) Check against shop inspection records on behalf of field relay tests. Check against shop inspection records. Islanding phenomen on detection MCCB （ ELCB ） is turned off and operation is shutdown in an instance. Acceptable 20 seconds standby after power restoration The power conditioner automatically starts 20 seconds after power restoration Restart on S. Acceptable The time to restoration shall be consistent with Tech. Spec. Performan ce test Regarding output inspection/test of relays, check against manufacturers’ shop inspection records on behalf of conducting field inspection/test － Visual inspection and verification test of structure and quantity

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, （ 4 ） Display system ItemInspection detailsMeans of inspectionResult AppearanceThere is neither peeling of surface coating nor deformation.Visual inspection InstallationThere is no loosening in screws, bolts and fixtures.Visual inspection NameplateThere is no defect to or peeling of nameplate.Visual inspection Wiring AC200V control power cables are correctly wired.Visual inspection, tester Low voltage cables are correctly wired and there is conduction. Visual inspection, tester Cables are wired in order.Visual inspection The panel internal is clean.Visual inspection LED verification test ItemInspection detailsMeans of inspectionResult Verification of quantity The generated electricity is consistent with the total of the numerical values shown in the power conditioner LCD. Visual inspection ＊ Input signals from the secondary cable in the transducer inside the interconnection switchboard to verify the indicated values on the LED screen. ＊ Visually check the numerical values indicated by power conditioner panel LCD or data collection system monitor to verify there is no error in the generated electricity of photovoltaic module and inverter output － Visual inspection and verification test of structure and quantity

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, （ 5 ） Junction box, interconnection switchboard and MCB ItemInspection details Means of inspection Result Appearance There is neither peeling of surface coating nor deformation. Visual inspection Installation There is no loosening in screws, bolts and fixtures.Visual inspection Wiring P/N （ +/- ） are correctly connected at the junction box input. Visual inspection, tester P/N （ +/- ） are correctly connected at the MCCB output. Visual inspection, tester Earth cables are connected.Visual inspection Cables are wired in order.Visual inspection The panel internal is clean.Visual inspection Visual inspection of junction box － Visual inspection and verification test of structure and quantity

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, （ 5 ） Junction box, interconnection switchboard and MCB ItemInspection details Means of inspection Result Appearance There is neither peeling of surface coating nor deformation. Visual inspection InstallationThere is no loosening in screws, bolts and fixtures.Visual inspection Wiring U/V/W are correctly connected at the inverter input. Visual inspection, tester U/V/W are correctly connected at the main MCCB output. Visual inspection, tester Earth cables are connected.Visual inspection Cables are wired in order.Visual inspection The panel internal is clean.Visual inspection U/V/W phase indicator shows the positive phase at the inverter input Visual inspection, phase indicator Visual inspection of interconnection switchboard － Visual inspection and verification test of structure and quantity

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, (5) Junction box, interconnection switchboard and MCB ItemInspection details Means of inspection Result Appearance There is neither peeling of surface coating nor deformation. Visual inspection InstallationThere is no loosening in screws, bolts and fixtures.Visual inspection wiring U/V/W are correctly connected at the main MCCB input. Visual inspection, tester U/V/W are correctly connected at the main MCCB output. Visual inspection, tester Earth cables are connected.Visual inspection Cables are wired in order.Visual inspection The panel internal is clean.Visual inspection U/V/W phase indicator shows the positive phase at main MCCB output. Visual inspection, phase indicator Visual inspection of MCB － Visual inspection and verification test of structure and quantity

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, － Equipment installation and wiring/connection inspection （ 1 ）, （ 2 ） Insulation resistance measurement of cable between junction box and inverter panel Insulation resistance measurement of cable between inverter and interconnection witchboard Insulation resistance measurement of cables between interconnection switchboard, MCB and existing transducers ［ Test procedure ］ Measure the insulation resistance of （ + ，－） polarities and （ R ， S,T ） phases of each cable to ensure that there is no insulation failure. Measure the insulation resistance between each cable and the ground (according to the rules for internal cables). ［ Acceptance criteria ］ Measured voltage ＞ 600V ： Acceptable if measurement using 1000V megger shows 0.4MΩ or igher. Measured voltage ＞ 300V ： Acceptable if measurement using 500V megger shows 0.4MΩ or higher Measured voltage ＞ 150V ： Acceptable if measurement using 500V megger shows 0.2MΩ or higher. Measured voltage ＞ 150V ： Acceptable if measurement using 500V megger shows 0.1MΩ or higher.

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, Equipment installation and wiring/connection inspection Measurement of cable insulation resistance ItemInsulation resistance （ M ） Cable typeResult Junction box-1 ～ Inverter-1 P （＋） 100MΩ or higher CV10sq-4C Earth cable 1C, spare cable 1C N （－） 100MΩ or higher Junction box-2 ～ Inverter-2 P （＋） 100MΩ or higherCV10sq-4C Earth cable 1C, spare cable IC N （－） 100MΩ or higher Junction box-3 ～ Inverter-3 P （＋） 100MΩ or higherCV10sq-4C Earth cable 1C, spare cable IC N （－） 100MΩ or higher Inverter-1 ～ Interconnection switchboard R （ red ） 100MΩ or higher CV14sq-4C S （ black ） 100MΩ or higher T （ blue ） 100MΩ or higher N （ white ） 100MΩ or higher Interconnection switchboard ～ MCB R （ red ） 100MΩ or higher CV100sq-4C S （ black ） 100MΩ or higher T （ blue ） 100MΩ or higher N （ white ） 100MΩ or higher MCB ～ Existing transducer-9 R （ red ） 100MΩ or higher CV100sq-4C S （ black ） 100MΩ or higher T （ blue ） 100MΩ or higher N （ white ） 100MΩ or higher >600V >300V

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, － Equipment installation and wiring/connection inspection （ 1 ）、（ 2 ） Insulation resistance measurement of cables between photovoltaic modules ［ Test procedure ］ Measure the insulation resistance of （ + ，－） polarities and （ R, S, T) phases of each cable for one string of photovoltaic module array to verify that there is no insulation failure. Measure the insulation resistance between each cable and the ground (*The insulation resistance of the cable including the photovoltaic module will be measured). ［ Acceptance criteria ］ Open-circuit voltage ≧ 300V ： Acceptable if measurement using 1000V megger shows 0.4MΩ or higher. Measurement of cable insulation resistance Module No. Insulation resistance （ M ） Cable usedResult Junction box-1 PV MΩ or higher Manufacturer’s standard type （ 4sq-5C ） 1C earth cable, spare cable 2C Acceptable PV MΩ or higherAcceptable PV MΩ or higher Manufacturer’s standard type （ 4sq-5C ） 1C earth cable, spare cable 2C Acceptable PV MΩ or higherAcceptable PV MΩ or higher Manufacturer’s standard type （ 4sq-5C ） 1C earth cable, spare cable 2C Acceptable PV MΩ or higherAcceptable PV MΩ or higher Manufacturer’s standard type （ 4sq-5C ） 1C earth cable, spare cable 2C Acceptable PV MΩ or higherAcceptable PV MΩ or higher Manufacturer’s standard type （ 4sq-5C ） 1C earth cable, spare cable 2C Acceptable PV MΩ or higherAcceptable

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, － Open-circuit voltage test/earth resistance test （ 1 ） DC Open-circuit voltage of cables between photovoltaic modules The crystalline photovoltaic power generation system consists of 270 panels of 167 W module. Eighteen modules （ 167W ） in series ×fifteen modules in parallel constitute a photovoltaic power generation system. The open-circuit voltage of one module is about 43.1V （ at the highest ） with an error of ±10%. Accordingly, the nominal voltage of one module accounts for 43.1V×0.9 ～ 1.1 ＝ ～ 47.41V. The maximum open-circuit voltage of one circuit consisting of 18 modules will be: 38.8V×18 modules ＝ V （ lower limit ） 47.4V×18 modules ＝ V （ upper limit ） ［ Test procedure ］ ・ Measure the open-circuit voltage of one each string of photovoltaic module array to confirm the polarity of each circuit. ・ Measure the open-circuit voltage of one each string of photovoltaic module array to check if the number of modules in series is correct or not. ＜ If the measured voltage is out of the acceptance criteria, the modules in series might be incorrectly connected. ＞

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, － Open-circuit voltage test/earth resistance test （ 1 ） DC Open-circuit voltage of cables between photovoltaic modules ［ Test conditions ］ Tests shall be conducted during daytime hours on a sunny day. （ Solar radiation shall be 0.1kW/m 2 or higher. ） ［ Acceptance criteria ］ Measure the open-circuit voltage of one each string of module array to confirm that it meets the following criteria. Measurement at junction box Module train No. Junction box-1 Polarity （ + ， - ） Open-circuit voltage (Voc) Acceptance criteria 698V ～ 853V Junction box-1 PV1-1O.K744.0VAcceptable PV1-2O.K740.0VAcceptable PV1-3O.K737.0VAcceptable PV1-4O.K735.0VAcceptable PV1-5O.K734.0VAcceptable

e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, － Open-circuit voltage test/earth resistance test （ 2 ） Earth resistance measurement ［ Test procedure ］ Measure the earth resistance. ［ Acceptance criteria ］ Earth resistance of 100 or less is acceptable. Earth resistance ItemMeasured valueResult Interconnection point1.6ΩAcceptable