Page 1 of 28. Ingo Röhr. Frank Hesmer

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Page 1 of 28 TEST REPORT Engineering recommendation G83/1 Recommendation for the connection of small-scale embedded generators (up to 16 A per phase) in parallel with public low-voltage distribution

..: 2011-04-11 Testing Laboratory Name...: Bureau Veritas Consumer Product Services GmbH Address...: Businesspark A96, 86842 Türkheim, Germany Testing location...: Samil Power Co., Ltd., Address...: No.

1 Page 1 of 28 TEST REPORT Engineering recommendation G83/1 Recommendation for the connection of small-scale embedded generators (up to 16 A per phase) in parallel with public low-voltage distribution networks. Report reference No....: 10TH0503-G83/1_1 Tested by (printed name and signature)...: Ingo Röhr Approved by (printed name and signature)...: Frank Hesmer Date of issue...: Testing Laboratory Name...: Bureau Veritas Consumer Product Services GmbH Address...: Businesspark A96, Türkheim, Germany Testing location...: Samil Power Co., Ltd., Address...: No.66 Taihangshan Road, Suyu Economic Development Zone, Suqian City, Jiangsu Province, P.R. China Applicant's Name...: Samil Power Co., Ltd., Address...: No.66 Taihangshan Road, Suyu Economic Development Zone, Suqian City, Jiangsu Province, P.R. China Test specification Standard...: G83/1 September 2003 and Amendment 1 June 2008 Test Report Form No...: G83/1 A TRF originator...: Bureau Veritas Master TRF...: Bureau Veritas Consumer Product Services GmbH, October 2010 Copyright Bureau Veritas Consumer Product Services GmbH Test item description...: Solar Inverter Trademark...: Manufacturer...: Samil Power Model and/or type reference...: SolarRiver 1700TL, SolarRiver 2300TL Ratings...: SolarRiver 1700TL SolarRiver 2300TL Input Voltage: 100V-500Vdc 100V-500Vdc Input current: 9A 11A Output Voltage: 230V / 50Hz Output current: 8,6A 11A Output power: 1500W 2000W

2 Page 2 of 28 Copy of marking plate:

3 Page 3 of 28 History Sheet: Ingo Röhr Initial report was written Rev.0 Ingo Röhr New model names Rev.1 Address of the manufacturer sites: Samil Power Co., Ltd., No.66 Taihangshan Road, Suyu Economic Development Zone, Suqian City, Jiangsu Province, P.R. China

Page 4 of 28 General product information: General product information: A solar inverter converts DC current into AC current. The input and output are protected by Varistors to Earth.

4 Page 4 of 28 General product information: General product information: A solar inverter converts DC current into AC current. The input and output are protected by Varistors to Earth. The unit is providing EMC filtering at the output toward mains. The unit does not provide galvanic separation from input to output (transformer). The output is switched off redundant by the high power switching bridge and two relays in series. This assures that the opening of the output circuit also operates in case of one error. The PV input is also connected to an EMC filter. Before each start up, the isolation of the unit is checked and in case of an insulation fault, the unit does not feed into the grid. The voltage and frequency measurement is performed with an voltage divider which are connected directly to line and neutral. Both controllers get these signals and analyze the data. With the sensor TX1_1 measured the differential current between line and neutral. The output signal is linked to both controllers (M.GFCI and R.GFCI). Before the system start up, each time an 15mA pulse is send to the GFCI sensor. The sensor has to be response with answer pulse to the both controller. If the pulse is not send, the system displays GFCI- sensor defect and the unit does not start to feed into the grid. The DC-injection is measured with the PCB sensor HCT2. This output signal is connected to both controllers as well. The DSP main controller and redundant controller communicate with each other and compare their measurement values, so that in case of a difference, the unit is disconnected. There are two relays in serial on each path (L1 and N). Each DSP controls one pair of relays (one relay at each path). In addition the inverter bridge can be stopped by both DSP s. Before start-up, the inverter measures the insulation resistance of the PV arrays to PE. If the value is smaller than the intern configured value, the inverter does not connect to the grid. The measurements had been performed with different units. All the results are applicable to the other units as well since they have the same hardware (only difference is the number of capacitors in the DC link) and they are just firmware derated. Block diagram The product was tested on hardware version: Prototype PCBs: MAIN 1K5: MAIN 2K2: MAIN 2K8: CONTROL: COMMUNICATION:

5 Page 5 of 28 software version: 1.00

6 Page 6 of 28 Particulars: Test requirements: Equipment mobility...: Operating condition... Mains supply tolerance...: Class of equipment...: Mass of equipment...: Protection against ingress of water...:...: Test case verdicts: Test case does not apply to the test object... : Test item does meet the requirement... : Test item does not meet the requirement...: Permanent connection Continuous Input (Solar): V DC Output (mains): 230V AC, 50Hz Class I 21kg IP65 according to EN N/A P(ass) F(ail) Testing: Date of receipt of test item...: Date(s) of performance of test...: until General remarks: The test result presented in this report relate only to the object(s) tested. The report shall state compliance of the tested objects with the requirements of G This report shall not be reproduced, except in full, without the written approval of the applicant. (see Annex #)" refers to additional information appended to the report. "(see appended table)" refers to a table appended to the report. Throughout this report a comma is used as the decimal separator. This Test Report consists of the following documents: 1. Test Report 2. Pictures of the unit Annex No Test equipment list Annex No. 2

7 Page 7 of 28 SUMMARY OF TESTING: Continue Engineering recommendation G83/1 Clause Requirement Test Result Remark Verdict C1 C2 Certification & Type testing general arrangements CE Marking and Certification C3 Type verification functional testing of the interface protection C 3.1 Disconnection times The Inverter is P synchronized on the grid voltage. So it withstands a 180 degree out of phase re-connection (See note at table 1: trip times <5s). C 3.2 Under/ Over Voltage Tests P C 3.3. Under/ Over Frequency Tests P C 3.4 Loss of Mains Test P C 3.5 Reconnection Times P C 4 Power quality C 4.1 Harmonics Covered by EMC Report P C 4.8 C 4.2 Power Factor P C 4.3 Voltage Fluctuations and Flicker Covered by EMC Report P C 4.8 C 4.4 DC Injection P C 4.5 Over Current Protection P C 4.6 Short Circuit Current Contribution P C 4.7 SELF Monitoring Solid State Switching N/A C 4.8 Electromagnetic Compatibility P

8 Page 8 of 28 TEST SHEET: C3 Type verification functional testing of the interface protection C3.2 UNDER / OVER VOLTAGE TESTS P Under Voltage Over Voltage Parameter Voltage Time (sec) Voltage Time (sec) Output power level * 10% 55% 100% 10% 55% 100% G83/1 Limit 207 V 1,5 s 264 V 1,5 s Actual setting 209,0 209,0 209,0V V 262,0V 262,0V 262,0V V V 79ms 68ms 58ms 79ms 39ms 22ms Trip value 71ms 68ms 68ms 49ms 20ms 20ms 230V to 230V to 70ms 69ms 68ms 72ms 30ms 20ms 204V 267V 69ms 71ms 68ms 73ms 20ms 22ms 69ms 69ms 68ms 73ms 30ms 30ms Note: Lower and upper threshold voltage shall not fall or rise below or above 3% of the threshold voltage itself (min. 189,6V; max. 260,6V). The measurement shall take place at nominal frequency and any power. The tests had been performed on the SolarRiver 1700TL, and are valid for the SolarRiver 2300TL since it is identical in hardware and just power derated by software. Under voltage: 10% Output power

9 Page 9 of 28 Over voltage: 10% Output power

Page 10 of 28 C3.3 UNDER / OVER FREQUENCY TESTS P Under frequency Over frequency Paramete r Frequency Time Frequency Time Output power level * 10% 55% 100% 10% 55% 100% G83/1 Limit >=47 Hz 0.5s <=50.

10 Page 10 of 28 C3.3 UNDER / OVER FREQUENCY TESTS P Under frequency Over frequency Paramete r Frequency Time Frequency Time Output power level * 10% 55% 100% 10% 55% 100% G83/1 Limit >=47 Hz 0.5s <=50.5 Hz 0.5s Actual 47,01Hz 47,01Hz 47,01Hz 50,50Hz 50,50Hz 50,50Hz setting 80ms 66ms 58ms 62ms 70ms 56ms Trip value 82ms 78ms 58ms 60ms 68ms 48ms 47,50Hz to 50,00Hz to 84ms 68ms 70ms 58ms 56ms 52ms 46,50Hz 51,00Hz 82ms 74ms 60ms 62ms 68ms 60ms 84ms 74ms 72ms 54ms 60ms 58ms Note: Operation of the under/over frequency protection will be demonstrated for an increase or decrease of frequency within ± 0.5% of the trip settings, e.g. for an Over Frequency setting of 50.5 Hz the permissible operating range is 50.5 ± Hz. The test frequency should be applied in steps of ± 0.5% of setting for a duration that is longer than the trip time delay, for example 1 second in the case of a delay setting of 0.5 second. The tests had been performed on the SolarRiver 1700TL, and are valid for the SolarRiver 2300TL since it is identical in hardware and just power derated by software. Under frequency: 10% Output power

11 Page 11 of 28 Over frequency: 55% Output power

12 Page 12 of 28 C3.4 LOSS OF MAINS TEST P Frequency: 50+/-0,2Hz U N =230+/-3Vac Test conditions: RLC consumes inverter real power within +/- 5% Quality > 0,5 Output power level: 10% 55% 100% G83/1 Limit: 5s Actual setting (sec): 84ms 351ms 266ms 86ms 249ms 274ms Trip value (sec): 131ms 224ms 267ms 88ms 508ms 182ms 129ms 344ms 234ms L= mh L= mh L= mh Parameter R= Ω R= Ω R= Ω C= µf C= µf C= F Note: Inverter connected to a network combining a resonant circuit with a Q factor > of 0.5 and a variable load; the value of the load is to match the inverter output to within +/-5%. A switch is placed between inverter/load and distribution system. The tests had been performed on the SolarRiver 1700TL, and are valid for the SolarRiver 2300TL since it is identical in hardware and just power derated by software. Loss of mains: 55% Output power

13 Page 13 of 28 C3.5 RECONNECTION TIMES P Reconnestion Time Under/Over voltage Under/over frequency Loss of mains Minimum value 180 seconds Actual settings (sec) 180s 180s 180s Recorded value (sec) 184s 184s 184s The tests had been performed on the SolarRiver 1700TL, and are valid for the SolarRiver 2300TL since it is identical in hardware and just power derated by software. C4 Power quality C 4.1 Harmonic Current Emissions P Harmonics 2nd 3rd 5th 7th 9th 11th 13th 15 th n 39 th Limit 1,08 2,3 1,14 0,77 0,4 0,33 0,21 0,15 * (15/n) Note: Covered by EMC Report C 4.8 C4.2 Power factor P G 83/1 Limit 0.95 lag-0.95 lead Output Voltage: 212V (U N -8%) 230V 248V (U N +12.7%) Test Value 0,997 0,997V 0,995V Note: The power factor test shall be such that the inverter supplies full load to the DNO system. The tests had been performed on the SolarRiver 1700TL, and are valid for the SolarRiver 2300TL since it is identical in hardware and just power derated by software. C 4.3 Voltage Fluctuations and Flicker (covered by EMC Report) P U N =230V Output power: 100% Starting Stopping Running Limit 4% 4% Pst = 1.0 Plt = 0.65 Note: Covered by EMC Report C4.8

14 Page 14 of 28 C4.4 DC injection P G 83/1 Limit 20 ma Output power: 10% 55% 100% Note: The level of dc injection may be measured during tests C3.2, C3.3, C3.4 and C4.2. The tests had been performed on the SolarRiver 2300TL and are valid for the SolarRiver 1700TL since it is identical in hardware and just power derated by software. SOLARRIVER 1700TL , , ,015 power (W) ,010 0,005 0,000-0,005-0,010 dc current (A) 400-0, , , time (500ms cycle) power (W) dc current (A) dc current limit (A) dc current limit (A) SOLARRIVER 2300TL ,025 0, ,015 0,010 power (W) ,005 0,000-0,005 dc current (A) -0, ,015-0, , time (500ms cycle) power (W) dc current (A) dc current limit (A) dc current limit (A) 20 per. Mov. Avg. (dc current (A))

15 Page 15 of 28 C4.5 Over Current Protection P The products have to be installed on a a 15 A (IEC) branch circuit for SolarRiver 1700TL and a 20 A (IEC) branch circuit for SolarRiver 2300TL to provide over-current protection. Note: See installation manual C4.6 Short circuit Current Contribution P As Photovoltaic SSEGs are inverter connected, they are deemed to automatically comply with regulations and no further tests are required. C4.7 Self Monitoring Solid state Disconnection N/A Units do not provide solid state switching relays. In case the semiconductor bridge is switched off, then the voltage on the output drops to 0. In this case the relays on the output will also open. C4.8 Electromagnetic Compatibillity (EMC) P

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20 Page 20 of 28 Note: The whole report is stored at Bureau Veritas Consumer Product Services GmbH, Türkheim (Project No. 10TH0503)

21 Page 21 of 28 Annex No. 1 Pictures of the unit

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27 Page 27 of 28 Annex No. 2 Test Equipment list

28 Page 28 of 28 Equipment Internal No. Manufacturer Type Serial No. Last Calibration TRMS - Fluke Apr 2010 Multimeter TRMS - Fluke Apr 2010 Multimeter Current Clamp Tektronix TCPA300 B Apr 2010 AC Source Chroma Power Meter Yokogawa WT J Apr 2010 DC Power Regatron TC.P S.HMI 0914CC931 Supply Oscilloscope Agilent DS06014A MY Apr 2010 LCR Gwinstek LCR EJ Apr 2010 Electrical Extech Apr 2010 Safty Compliance Analyzer Differential Probe 100MHz Sl Apr 2010

TEST REPORT AS :2005 and AS :2005 Grid connection of energy systems via inverters Grid protection requirements

TEST REPORT AS :2005 and AS :2005 Grid connection of energy systems via inverters Grid protection requirements TEST REPORT AS 4777.2:2005 and AS 4777.3:2005 Grid connection of energy systems via inverters Grid protection requirements Report reference No...: 09TH0459-AS4777_2 Tested by (printed name and signature)...: