Canadian Solar’s modules clear ammonia tests

Certified for use in Germany’s many agricultural installations.

August 9, 2012   by PLANT STAFF

About 20% of PV installations in Germany are located on agricultural land.

GUELPH, Ont.: Canadian Solar’s solar modules have passed two ammonia standards tests that make them suitable for use among the many photovoltaic (PV) module installations in Germany’s countryside.

The company reports it achieved the highest ratings possible in the two most significant standard tests for ammonia (NH3) resistance.

The modules were tested by certification companies TUV Rheinland and DGL for ammonia corrosion and for use in agricultural environments. The tests included power loss, visual inspection and insulation resistance.


About 20% of PV installations in Germany are located on agricultural land where ammonia concentrations can be high, particularly around animal stables.

The Guelph, Ont.-based manufacturer of solar products and systems said the modules were allowed a maximum power loss of 5%. They passed both tests without showing any performance degradation.

In the ammonia corrosion test by TUV Rheinland the modules are exposed to extreme conditions for a 20-day test cycle, being exposed to 6,667 ppm of ammonia (NH3), under eight hours at 60 degrees C with 100% relative humidity, then 16 hours of drying in standard atmosphere without ammonia under 23 degrees C and a maximum of 75% relative humidity. This cycle repeated 20 times. The modules showed less than 0.8% power loss.

The DLG NH3 resistance test exposed the modules to 750 ppm of ammonia clouds at 70 degrees C for 1,500 hours. This test simulates a 20-year lifetime. The modules showed less than 1.3% power loss.

TUV Rheinland certified the modules CS6P-P and CS6P-M, CS5A-M and CS5A-P, CS6X-P and CS6X-M, CS6A-P and CS6A-M, CS5P-M and CS5P-P, CS6C-M, CS6C-P and CS5C-M-made by Canadian Solar.

The DLG test included Canadian Solar’s CS6P-P-module.

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