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Dual-phase energy metering evaluation board with 2 current transformers based on the STPM34

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Parameter NameParameter Value
Target ApplicationSmart Grid Distribution and Smart Meters
Core ProductSTPM34
Packing TypeNot Applicable
RoHs compliantEcopack1
Package NameCARD

The EVALSTPM34 evaluation board is a class 0.2, dual-phase meter with 2 CTs for power line systems with Vnom = 140 to 300 V(RMS), Inom / Imax = 5/100 A(RMS), flin = 50/60 Hz ± 10% and Tamb = -40 to +85 °C.

Measured active/reactive power can be output from two programmable LEDs on the board.

The board can be interfaced with a PC running evaluation software through an isolated USB-to-UART port, or through the STEVAL-IPE023V1 USB (SPI) isolated interface tool for configuration and data reading.

The board also has SPI/UART pins available to interface a microcontroller for application development.

Key features
  • 0.2% accuracy dual or split-phase meter
  • Vnom(RMS) = 140 to 300 V, Inom/Imax(RMS) = 5/100 A, flin = 50/60 Hz ± 10%
  • Connector for USB isolated hardware programmer tool STEVAL-IPE023V1 and PC GUI
  • USB-to-UART isolated connector to PC GUI using virtual COM port
  • SPI/UART switch for device peripheral selection
  • 2 programmable LEDs on board
  • Digital expansion to external system-on-chip or MCU
  • 3.3 V power supply: external or through STEVAL-IPE023V1 isolated USB board
  • IEC61000 standard compliant
  • RoHS compliant