Abstract: Tests to determine the performance of stand-alone photovoltaic (PV) systems and for verifying PV system design are presented in this recommended practice. These tests apply only to complete systems with a defined load. The methodology includes testing the system outdoors in prevailing conditions and indoors under simulated conditions.
Such tests, however, are beyond the scope of this recommended practice and may require specialized test equipment and procedures. Purpose: An evaluation of stand-alone PV system performance is needed to determine how well the PV array charges the battery and how well the battery is sized for the load.
Solar Energy International and some other training organizations offer instruction in meg testing of PV systems. Some standards documents, including IEC-62446, offer measurement procedures and test limits. However, it is likely that techniques for interpreting PV array meg test data and identifying outlier circuits will continue to evolve.
e by a Test Engineer appointed by the Eligible Consumer. As a rule, this test begins after the completion of the solar PV system, although for large PV systems for safety reasons the Test Engineer may initiate the tests on strings during installation, in order to prevent parallel of strings
These tests do not cover PV systems connected to an electric utility. Test results are only relevant to the system tested. If the PV system or load changes in any way, then the tests should be rerun on the modified system. It may be desired to run performance tests on the load (s).
eaker, switchgear and transformer testing (if applicable).Generally, the contractor completes the visual inspection and functional tests, but the owner and an independ nt technical advisor may witness or conduct their own tests. For smaller solar systems, it may be feasib