TEST INSTRUMENTS Phone: 800•438•0671 SEQUENCE INDICATOR Knopp K-3 Phase Sequence Indicator is used to determine the phase sequence (A-B-C or C-B-A) of three-phase voltages. (A-B-C is clockwise rotation) It is important that phase sequence is known prior to energizing electrical motors and other equipment, as incorrect connection could cause damage to the equipment. The K-3 Phase Sequence Indicator is of the rotating-disk design; there are no lights to burn out. All internal connections are soldered and there are no exposed metal parts on the housing. Its three leads are color-coded (red (A), white (B), and blue (C)) for easy connection (other colors are available upon request). The leads are 36 inches in length (other lengths available upon request). The K-3 is designed for operation from 25 to 60 Hertz and from 60 to 600 Volts. Other models (including a panel-mount version and a 400 Hz. version) are available. A description of K-3 variations can be found by clicking here. A rugged, nylon carrying case is available as an option. KN-44030 Phase Sequence Indicator KN-44030 Sperry Instruments Phase Sequence and Open Phase Indicator is designed verify proper wiring and connection in 3-phase motor applications. Visual rotation indication. Color coded insulators over alligator clips for increased protection. Shock resistant plastic housing. LED indication of phase wiring. Compact design and lightweight for easy handling. Withstands 5500AC voltage for 1 minute. Broad Operating Range: AC Voltage 110-600V. SPE-PSI8031 Phase Sequence Indicator SPE-PSI8031 341
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