System Phase Identification – SPI-III

System Phase Identification System – SPI-II


Our vision has always been to create a phase identification system that exceeds any of today’s industry quality, safety and efficiency requirements. SPI-III’s unique design consists of a wireless bi-module combo that is stunningly easy to configure and operate. With many advancements and innovations, SPI-III will be more helpful than ever before, enabling field applications such as identification of A-B-C electrical phases from all 50 and 60 Hz networks, switchgear phase concordance (matching), phase rotation, system paralleling, underground phasing applications and more.


  • True phasing for all applications at any voltage
  • Live true phasing
  • Reading accuracy of ± 1°
  • GPS satellite network synchronization
  • Fast setup, ready to operate in seconds
  • No network de-energisation required
  • All-day battery life
  • Encrypted and robust communication technology
  • Underground time-delayed phase id mode
  • Local or cloud based deployment
  • Specifications:

    Wireless range
    Main Field unit and wireless display unit: 45 ft or 14 meters

    SPI-III Reference unit
    • Two reference inputs (CAT-III 600V, CAT-IV 300V)
    • Ethernet port
    • Power input
    • External GPS connection interface
    • 50/60Hz

    SPI-III-Field Unit
    • 4 AA Batteries
    • Autonomy: 30 hours of continuous phasing
    • CAT-III 1000V / CAT-IV 600V low voltage phasing direct contact
    • Up to 72 kV medium voltage direct contact using hotstick
    • Non-contact up to 800kV
    • Capacitive test port input
    • Switchgear half rectified voltage indicator port measurements.
    • IP-67 rating
    • 50/60Hz

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