Taiwan-based PV module manufacturer, WINAICO said its 'WST' series multicrystalline modules had past TÜV Rheinland’s toughest PID (Potential Induced Degradation) test with minimal degradation.
WINAICO undertook the TÜV Rheinland PID test at 85°C temperature, 85% relative humidity, and -1000V bias voltage for 250 hours. The company said the power degradation was “significantly less” than the power degradation threshold of 5% for a pass, though actual figures were not disclosed.
“PID issues have plagued commercial and utility-scale installations for years, as poorly manufactured modules would slowly degrade when installed in long module strings,” said Rossmann, Vice President of Global Sales at WINAICO. “Low degradation, durability and high yields are of utmost relevance to investors, banks and consumers under the most demanding climate conditions.”
WINAICO recently gained a tougher hail stone test under IEC 61215 certification, via TÜV Rheinland that ensures its WST-250P6 series modules could withstand the impact of 35mm diameter hail stones travelling at a speed of 27.2 m/s or over 98 kph.