The HT Instruments PV measuring device PV-ISOTEST is suitable for acceptance, troubleshooting and maintenance of PV systems up to 1,500 V DC. The PV-Isotest determines the insulation resistance of an individual module, a string or even an entire PV field with a test voltage of up to 1,500 V DC in accordance with EN62446 (VDE0126-23).
Due to the presence of string voltage, conventional insulation measuring devices require a suitable adapter to short-circuit the positive and negative connections of the PV string to be tested. With PV-ISOTEST it is not necessary to use an external device. The PV-ISOTEST carries out the insulation measurements with full autonomy and self-sufficiency. In addition, the PV-ISOTEST shows you the exact position of an insulation fault in a string of the PV system with the help of the new GFL (Ground Fault Locator) function.
Product features:
- Insulation measurement up to 1,500 V DC also on live systems
- Localization of the insulation fault on a PV string using the new GFL function
- Low resistance measurement (protective conductor) with a test current> 200mA
- Measurement of polarization index (PI) and dielectric absorption ratio (DAR)
- Measurement of AC voltage components in the PV string