Voltcraft vc 32 phase rotation tester voltcraft vc 32 p the voltcraft vc 32 phase rotation tester is for recording and testing the phase sequence in 3 phase power grids it will show the simultaneous display of the present phases with the voltcraft vc 32 you will be able to cope even with difficult tasks as an ambitious hobbyist just as much as a professional user p p you can also check whether all three phases are available the nominal voltage range is 250 to 400v ac the vc 32 with it