208_Transfer of measuring data
10.3 evaluation of the measuring results
The current/voltage characteristic curve (I/U characteristic curve)
of a photovoltaic system is used to identify and analyse different
features and problems of a generator. It helps detect partial shad-
ing of the generator field, defective bypass diodes, excessive ad-
ditional module resistance, soiling of the modules and problems
with individual cells in the PV modules. Interpreting characteristic
curves requires some experience and basic knowledge of semicon-
ductor technology. To facilitate the interpretation, examples of
characteristic curves from the evaluation software are compiled
at www.tri-ka.com.
Instructions for use_209
11. instRuctions FoR use
11.1 instrument storage and care
Both instruments should always be transported and stored in
their case. The buttons and screens are designed for manual
operation and are not resistant to metal or other hard objects.
Always use a soft cloth to clean the measuring instrument. Harsh
abrasives or aggressive cleaning agents will irreparably damage
the screen and buttons. To prevent damage to the LiPo battery
during longer storage times of the measuring device, the battery
should be charged to app. 50 %.
11.2 disposal
Before disposal of the TRI-KA, make sure to separate and prop-
erly dispose of the various components and batteries.