Extech 480400 Phase Sequence TesterExtech 480400 Phase Sequence Tester Phase Sequence Tester Checks phase sequence and phase status Tests up to 600VAC and displays graphical phase orientation on the large LCD Key Features: 40 to 600VAC rated test range for testing phase orientation of three phase power sources over 15 to 400Hz frequency range Graphical multiline LCD indicates phase orientation (clockwise or counter clockwise) and whether each of the three phases is live Durable housing
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