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SPD480 Phase Rotation Indicator. The SPD480 determines phase rotations on secondary potential transformers.

SPD480 Phase Rotation Indicator

The TPI Model SPD480 Phase Rotation Indicator operates properly on variable frequency drives. Does not give false readings by pulsed waveforms.

  • Easy to operate – connect one lead to each phase
  • Large alligator clips for easy connection to cables and bus bars
  • Operates properly on variable frequency drives. Does not give false readings by pulsed waveforms
  • Verify proper rotation on feeder extensions
  • Determine phase rotation on secondary potential transformers

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Features & Benefits

  • Easy to operate – connect one lead to each phase
  • Large alligator clips for easy connection to cables and bus bars
  • Operates properly on variable frequency drives. Does not give false readings by pulsed waveforms
  • Verify proper rotation on feeder extensions
  • Determine phase rotation on secondary potential transformers

Product Documentationpdf-icon1

Click below to view or download product documentation PDFs:

SPD480 Data Sheet

 Model SPD480 Specifications
 Voltage Range  110V to 480V 3 phase
 Maximum Voltage Input  480V
 Frequency Response  40Hz to 70Hz
 Maximum Voltage Input Time Ratings  480V: 4 minutes
 450V: 4 minutes
 220V: 30 minutes
 110V: Continuous
 Test Lead Insulation Rating  1000V
 Fusing  500mA, 50kA interrupting rating
 Size  1.6” x 6” x 3” (41mm x 152mm x 77mm)
 Net weight  9.8 oz. (278g)


 Rotating disk indicates phase rotation

SPD480 Introduction Video

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