Significance and Use It is the intent of this test method to
provide a recognized procedure for testing and reporting the
electrical performance of a photovoltaic concentrator module or
system. If an inverter is used as part of the system, this test
method can provide a dc or ac rating or both. The dc or ac
rating depends on whether the inverter input or output is
monitored. The test results may be used for comparison among a
group of modules or systems from a single source. They also may
be used to compare diverse designs, such as products from
different manufacturers. Repeated measurements of the same
module or system may be used for the study of changes in device
performance over a long period of time or as a result of stress
testing. The test method is limited to modules and systems where
the concentrated irradiance on the component cells is greater
than 5000 Wm-2 at Eo. This limitation is necessary because the
total irradiance is measured with a radiometer with a field of
view less than 6° and because th