This three-phase phase tester is designed to help you easily check the phase sequence of voltage and current in your devices. With a working voltage range of 60~600V and a measurable frequency range of 20Hz ~ 400Hz, it can accurately measure and display the phase sequence of the input signal.
The tester has a maximum dielectric strength of 2000V/min (impulse voltage 4000V) and an accuracy of 0.1%. It weighs about 200g and can be used continuously for up to 60 minutes at 200V ACV or up to 4 minutes at 600V ACV. It also comes with a handy carrying bag and instruction manuals for easy use.