a) Allows maximum 3 Bubbles exist
On the cell, each bubble area≤ 4mm
and not on the same solar cell;
b) Allows maximum 20 Bubbles
exist elsewhere, each bubble area
≤ 1mm ²; allowes up to 3 or 3
groups of bubbles of the total area
of less than20mm ²,two or bubble
spacing is no less than 2mm;
c) Bubble may not form a path
between frame and cell
d) Area of inadequate(melted)
EV A≤ 10mm².