EVALSTPM3X-3PH STMicroelectronics

EVALSTPM3X-3PH Poly-phase energy metering evaluation board with current transformers based on the STPM33, STPM34 and STM8S903 Data brief Description The STPM33, STPM34 poly-phase evaluation board is a Class 0.2, single-phase or poly-phase meter with current transformer sensors for power line systems of V = 140 to 300 V , nom RMS I / I = 5/100 A , f = 50/60 Hz 10% nom max RMS lin and T = -40 to +85 C. amb Measured data from the STPM33 and STPM34 are read by the STM8S903 device for 3-phase energy and power calculations and the active/reactive cumulative LED signals generation. To display all measurements, the board can be Features interfaced with PC running evaluation software 0.2% accuracy poly-phase meter evaluation through an isolated USB port, which provides also board the 3.3 V power supply. V = 140 to 300 V, nom(RMS) The board has also SPI/UART pins available to I / I = 5/100 A, f = 50/60 Hz 10% nom max(RMS) lin be interfaced to an external microcontroller for further application development. USB isolated connector to PC GUI Power supply 3.3 V through USB connector SPI/UART connector for STPM33/34 direct access SWIM connector for firmware upgrade SPI/UART connector for expansion to external MCU 2x LEDs on board for active-reactive power IEC61000 standard compliant RoHS compliant November 2014 DocID027132 Rev 1 1/3 For further information contact your local STMicroelectronics sales office. www.st.comRevision history EVALSTPM3X-3PH Revision history Table 1. Document revision history Date Revision Changes 03-Nov-2014 1 Initial release. 2/3 DocID027132 Rev 1