Hioki portable power meters and analyzers are best-in-class power measuring instruments for measuring single to three-phase lines with a high degree of precision and accuracy. The new and improved PQ3198 is a power quality analyzer for monitoring and recording power supply anomalies, allowing their causes to be quickly investigated, and also for assessing power supply problems such as voltage drops, flicker, harmonics, and other electrical issues. New features include the ability to drive current sensors straight from the PQA and enhanced recording capabilities. CAT IV 600V - safe enough for incoming power lines. Broadband voltage range lets you measure even high-order harmonic components of up to 80 kHz. Wide dynamic range from low voltages up to 1300V (3P4W line-to-line voltage). Maximum 6000V transient overvoltage up to 700 kHz. International power quality measurement standard IEC 61000-4-30 Edition 2 Class A. LAN, USB, and SD card interfaces. Optional GPS BOX for synchronizing multiple devices.