What is Potential Induced Degradation?

Here are a few documents that could help you understand the concept. If you have any questions, make a comment on this post.

Potential Induced Degradation (PID), SMA

Potential Induced Degradation, William Richardson, SOLON Corporation, February 1st, 2011

Potential Induced Degradation of Photovoltaic Modules:Influence of Temperature and Surface Conductivity, Faraz Ebneali, 2012

UL evaluates Potential Induced Degradation of PV Modules

POTENTIAL INDUCED DEGRADATION OF SOLAR CELLS AND PANELS, S. Pingel, O. Frank, M. Winkler, S. Daryan, T. Geipel, H. Hoehne and J. Berghold SOLON SE, Am Studio 16, 12489 Berlin, Germany