Description
The STPM33 energy metering evaluation board is a class 0.2, single-phase meter which includes tamper monitoring, CT and shunt current sensors 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 RS232 port, or through the STEVAL-IPE023V1 USB isolated interface tool for configuration and data reading. The board also has SPI/UART pins available to interface a microcontroller for application development.

Features
■ 0.2% accuracy single-phase meter with tamper monitoring
■ Vnom(RMS) = 140 to 300 V, Inom/Imax(RMS) = 5/100 A, flin = 50/60 Hz ± 10%
■ Tamper detection though neutral current monitoring
■ Connector for USB isolated hardware programmer tool STEVAL-IPE023V1 and PC GUI
■ RS232 and UART isolated connectors to PC GUI
■ 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