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 All Categories    Megger Phase Sequence Tester
Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
All Categories > Test Equipment > Megger Phase Testers > Megger Phase Sequence Tester > Item # PSI-700A  
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Item # PSI-700A, Phase Sequence Tester



Megger-PSI700a

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The Megger PSI-700A is a rugged, lightweight instrument used to determine the phase sequence or phase rotation of a three-phase system. It will also detect and identify an open phase. 

The PSI-700A is simple to use. The operator connects thre leads to the system and a lamp will instantly indicate either ABC clockwise rotation or CBA counter-clockwise rotation. Three lamps will light to indicate that all phase voltages are present. If a phase is open, only one lamp will light and identify the open phase.

  • Indicates clockwise or counterclockwise rotation
  • Detects open A, B or C phase
  • No moving parts, batteries or binding posts
  • No power source required
  • Rugged insulated enclosure
  • Canvas carrying case included


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(PDF, 155KB)


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