EKO MP-11 - Page 36

EKO INSTRUMENTS CO., LTD. I-V Curve Checker MP-11 Instruction Manual Ver.7
Pg. 35
4)
Unexpected shape with large missing part
・ Many of modules with low irradiation or large
shadow
5)
Unexpected shape with small missing part around Pm
・ A few modules (or clusters) with low irradiation or
small shadow
・ Uneven pollution of module surface
・ A few hotspots on module
・ Variation of module performance, such as Isc,
mismatch in a couple of modules in a string
6)
Unexpected shape with missing between Voc and
around Pm
・ One module or a few modules with low irradiation
7)
Unexpected shape with moderate slope from Voc
・ Large series resistance of PV cables or high
contact resistance of connectors
・ Degradation of interconnect in module
8)
Unexpected shape with steep slope from Isc
・ Small parallel resistance of module.
・ Damaged bypass diode in connection box of
module