I-V curve analysis

A new concept in solar PV test instrumentation combines accurate I-V curve analysis with essential electrical testing for the fast and effective commissioning, safety, and O&M diagnostic testing of all types of solar PV installations. Using simple push button operation, the new multi-function PV210 from Seaward carries out all the electrical commissioning tests required by IEC 62446, including open circuit voltage, short circuit current, maximum power point voltage, current and power, and insulation resistance. Alongside the electrical tests, the PV210 also performs I-V curve measurements in accordance with IEC 61829 to determine if the measured curve deviates from the expected profile, highlighting the need for any further analysis or fault finding. The fill factor of PV systems can also be assessed. The PVMobile Android App creates high definition color displays of the I-V and power curves and exported from PVMobile to head office for further analysis and investigation. Wireless Solarlink connectivity between the PV210 and the Solar Survey 200R meter enables real-time irradiance to be displayed and measured at the same time as electrical testing is being undertaken. I-V curve and electrical test data can be stored in the PV210's onboard memory and downloaded to a PC in CSV format for full traceability of system data and test records. In addition, professional inspection and test reports can be produced, including IEC 62446 measurements and I-V curve plots.

The Seaward Group | www.seaward-groupusa.com