G59/3 TYPE TEST VERIFICATION REPORT. Photovoltaic Microinverter. Tel Fax

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1 Type Tested reference number Unit technology System supplier name Address M S22 Photovoltaic Microinverter Enphase Energy Inc North McDowell Blvd. Petaluma, CA USA Tel Fax E:mail Web site Maximum export capacity, use separate sheet if more than one connection option per PCU kw single phase, single, split or three phase system kw three phase kw two phases in three phase system kw two phases split phase system System supplier declaration. - I certify on behalf of the company named above as a supplier of a Unit, that all products supplied by the company with the above Type Test reference number will be manufactured and tested to ensure that they perform as stated in this document, prior to shipment to site and that no site modifications are required to ensure that the product meets all the requirements of G59/3. Signed On behalf of Enphase Energy Inc. Peter L. Tarver

2 Power Quality - Harmonic Generation Unit tested to BS EN Unit rating per phase (rpp) 7.0* kva Harmonic % =Measured Value (Amps) x 23/rating per phase (kva) Harmonic At 45-55% of rated Measured Value MV in Amps % 100% of rated Limit in BS EN Measured Value MV in Amps % 1 phase 3 phase % 8% % Not stated % 4% % 10.7% % 2.67% % 7.2% % 2% % Not stated % 1.6% % 3.1% % 1.33% % 2% THD % 13% PWHD % 22% * system size is scalable; this is the system size tested (28 PCUs)

3 Power Quality - Harmonic Generation Unit tested to BS EN Generator Unit rating per phase (rpp) At 45-55% of rated 3.5 kw 100% of rated Harmonic Measured Value MV in Amps Measured Value MV in Amps Limit in BS EN in Amps Higher limit for odd harmonics 21 and above

4 Power Quality - Harmonic Generation Unit tested to BS EN Generator Unit rating per phase (rpp) At 45-55% of rated 3.5 kw 100% of rated Harmonic Measured Value MV in Amps Measured Value MV in Amps Limit in BS EN in Amps Higher limit for odd harmonics 21 and above

5 Power Quality. Voltage fluctuations and Flicker Tested to BS EN Starting Stopping Running d max d c d(t) d max d c d(t) P st P lt 2 hours Measured Values at test impedance Normalised to standard impedance Normalised to required maximum impedance Limits set under BS EN % 0% 0% 0.62% 0% 0% % 0% 0% 0.62% 0% 0% % 0% 0% 0% 0% 0% % 3.3% 3.3% 4% 3.3% 3.3% Test Impedance R 0.4 Ω X L 0.25 Ω Standard Impedance R 0.24 * 0.4 ^ Ω X L 0.15 * 0.25 ^ Ω Maximum Impedance R 0.4 Ω X L 0.25 Ω Test start date 31JUL2014 Test end date 31JUL2014 Test location Enphase Energy Inc North McDowell Blvd., Petaluma, CA

6 Power quality - DC injection. Test power level 10% 55% 100% Recorded value in Amps 0.0 A 0.0 A 0.0 A as % of rated AC current 0% 0% 0% Limit 0.25% 0.25% 0.25% Power Quality - Power factor Measured value V 230 V 253 V Measured at three voltage levels and at full. Voltage to be maintained within ±1.5% of the stated level during the test Limit >0.95 >0.95 >0.95 Protection - Frequency tests Setting Trip test No-trip tests Function Frequency Time delay Frequency Time delay Frequency /time Confirm no trip O/F stage Hz 90 s Hz s O/F stage 2 52 Hz 0.5 s Hz 0.74 s U/F stage Hz 20 s 47.5 Hz 20.3 s U/F stage 2 47 Hz 0.5 s Hz 0.73 s 51.3 Hz 95 s 51.8 Hz s 52.2 Hz 0.48 s 47.7 Hz 25 s 47.2 Hz s 46.8 Hz 0.48s

7 Protection - Voltage tests Setting Trip test No trip-tests All phases at same voltage Function Voltage Time delay Voltage Time delay Voltage /time Confirm no trip O/V stage V 1.0 s V 1.09 s V 2.0 s O/V stage V 0.5 s V 0.79 s V 0.98 s V 0.48 s U/V stage V 2.5 s V 2.65 s V 3.5 s U/V stage V 0.5 s V 0.79 s 188 V 2.48 s 180 V 0.48 s

8 Protection - Loss of Mains test and single phase test To be carried out at three power levels plus or minus 5%, an alternative for inverter connected Units can be used instead. Test Power 10% 55% 100% 10% 55% 100% Balancing load on islanded network 95% of Unit 95% of Unit 95% of Unit 105% of Unit 105% of Unit 105% of Unit Trip time. Limit is 0.5 s s s s s s s Note as an alternative, inverters can be tested to BS EN The following sub set of tests should be recorded in the following table. Protection - Frequency change, Stability test Start Frequency Change End Frequency Confirm no trip Positive Vector Shift 49.5Hz +9 degrees Negative Vector Shift 50.5Hz - 9 degrees Positive Frequency drift 49.5Hz +0.19Hzs Hz Negative Frequency drift 50.5Hz -0.19Hzs Hz Protection - Re-connection timer Time delay setting (s) Measured delay (s) Checks on no reconnection when voltage or frequency is brought to just outside stage 1 limits of table s 24 s At V At V At 47.4 Hz At 51.6 Hz Confirmation that the Unit does not re-connect

9 Fault level contribution. For machines with electro-magnetic Parameter Symbol Value For Inverter Time after fault Volts Amps Peak Short Circuit current i p ms 0 0 Initial Value of aperiodic current A ms 0 0 Initial symmetrical short-circuit current* I k ms 0 0 Decaying (aperiodic) component of short circuit current* i DC ms 0 0 Reactance/Resistance Ratio of source* X / R 2.5 Time to trip In seconds Self Monitoring solid state switching It has been verified that in the event of the solid state switching device failing to disconnect the Unit, the voltage on the side of the switching device is reduced to a value below 50 Volts within 0.5 seconds Yes/NA NA Additional comments