Check 1500 V photovoltaic systems with style. The MI 3115 PV analyzer offers testing in accordance with the IEC 62446 / VDE 0126-23 standard and supports all tests and measurements of categories 1 and 2. This includes measuring the insulation resistance of PV strings, measuring the I/U characteristic curve, as well as converting measurement results into STC values and comparing them with the nominal values provided by PV module manufacturers. Irradiance and cell temperature are measured in real-time with the wireless remote unit. Additionally, category 1 tests can be captured in an auto-test, allowing the user to perform all desired tests with a single touch of the start button. Correction of previously incorrectly entered parameters for already conducted measurements or groups of measurements. The device is operated via a large color touchscreen display, where the user can develop and start the selected test or measurement, as well as save and review results in numerical and graphical form. Memory organizer, actions on individual or group measurements, search function. The PC software Metrel ES Manager allows for the development of a measurement structure and measurements, uploads or downloads this structure, checks the results, enables advanced analysis of the I/U curve, the DB explorer of PV modules, and the creation of a professional test report.