Test Report no. 4790324433 issued by UL laboratories has shown astonishing performance of PHS modules undergone dynamic mechanical load test. Both model types of mono-facial and bi-facial were tested.

Modules were exhibited to 1000 Pa of dynamic load directed by pistons for 1000 cycles.

Tested modules haven’t shown an evolution of micro-crack, module fracture nor dielectric breakdown. Power degradation after test reached -0.14% of original power for bifacial product and -0.019% for mono-facial one.
It is good to mention that PHS modules withstand a static load of 5400/2400 Pa for front and back side respectively.

PHS do recommend its customers to follow the instructions written in installation manual to reach the optimized performance of PV modules.