LG Solar, Module Testing
LG’s manufacturing process & testing excellence LG solar panels are built to a very high quality standard They are tested rigorously during design and production All input materials for panels – from aluminum, to glass & silicon – undergo regular quality control processes LG expects its panels to be identical so the allowable variances are minimal In Australia, from 300,000 panels installed between 2011 & August 2016, only 2 panels have been returned. Worldwide, the return rate is less than 10 in 1 million
LG's quality control systems ore than 500 L G L G quality control Q Q- -System System processes and tests applied to every module & Ongoing input 2 x 100% Reliability sampling EL Test test every month material testing Each module's data stored for 30yrs in LG system for 100% traceability
Long term performance security LG modules pass key longevity tests for VDE registration for PID for Salt Mist for Ammonia Test Corrosion Test Resistance Test Resistance Test
LG Quality Control - PID* Test ������ * Potential Induced Degradation is a LG Mono X LG Mono X LG Mono X Competitor A* Competitor A* Competitor A* power degradation from exposure to 99.4 % 99.4 % 99.4 % 100% 100% 100% 97.8 % 97.8 % 97.8 % High Voltage Stress. 92.4% 92.4% 92.4% 95% � 95% � 95% � IEC Pass 90.3% 90.3% 90.3% Powe � Powe � Powe � At the internal PID test, LG tests 4x (%) (%) (%) •Quality the IEC standard. European Brand Panel 96 hrs 96 hrs 96 hrs 384 hrs 384 hrs 384 hrs 4x IEC 4x IEC 4x IEC 1x IEC 1x IEC 1x IEC
LG Quality Control - Damp Heat Test "����#�$��%�&����������������'������� ��� � ��� � ��� � ����� ����� ����� � �!�� � �!�� � �!�� �(�)*������$��*)�+��������$��,��*����� �!�� �!�� �!�� IEC Pass ��'����$�����*����������'���*$����-�� ����� ����� ����� ��� ��� ��� LG LG ./+��#�$��&����"����,���������� �������� �������� �������� �������� �������� �������� ����������������� 0���'��������*��� ������� ������� ������� ������ ������ ������ ��������������������������������������
LG Quality Control - Thermal Cycle Test 2��-�$��*��,�*��������������������)���������� ���� ���� ���� ����� ����� ����� ��� � ��� � ��� � ������������� �!�� �!�� �!�� IEC Pass ����� ����� ����� ./���������������)����������������������������� ��� ��� ��� ������*���$���$*$�)��'�(��-� LG LG 3������"���$�)��-,)��'�"����./��)������������ 1����-,)� 1����-,)� 1����-,)� �����-,)� �����-,)� �����-,)� ������� ������� ������� ������ ������ ������ �������������������� �������������������� ��������������������������������������
LG Quality Control - Sequential Test LG undertakes an extreme D/H D/H D/H T/C T/C T/C H/F H/F H/F 5 5 5 5 5 5 2000hrs 2000hrs 2000hrs 400 cycles 400 cycles 400 cycles 40 Cycles 40 Cycles 40 Cycles sequential Damp/Heat, ./�2����4 1 ./�2����4 1 ./�2����4 1 ��$��������3� ��$��������3� ��$��������3� Thermal/Cycle & Humidity/Freeze 100% 100% 100% 95.3% 95.3% 95.3% Test for its modules. This replicates 87.3% 87.3% 87.3% extreme and prolonged weather conditions. 6 7*�)��- �*������� 8���������)�
LG Quality Control – other tests Prolonged Vibration
And in summary… .. .. . And in summary… .. .. .
Summary of key tests Temperature Wafer Resistance Maximum & Damp test Test Power Test for extreme weather cond. Load Test 1 Wafer Impurity Impact Fracture Dynamic Test Test Mechanical Mechanical Load Load Hail Impact Test Micro Crack (EL) UV Test Test Salt Spray Test Field Test Load Test 2 Static Mechanical Load Ammonia Humidity Backing Sheet Resistance Test Freeze Test Stress Test
Low Hot Spot Risk due to two EL Tests To find module defects during the production process, LG conducts EL ( Electroluminescence ) tests, prior and post lamination Soldering Check Micro Crack Check Image Missing soldering spots between Micro-cracks in the cell can make the Details the ribbon and cell surface may current mismatch, altering front Ag cause hot spots paste colour and material characteristics
Reference sites Thank you for your time Thank you for your time LG Solar Markus Lambert - 0449 552190 Grant Rollo - 0419 266419 solar.sales@lge.com.au https://lgenergy.com.au/
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