super_star

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

EVALSTPM34

Overview

The STPM34 evaluation board is a class 0.2, dual-phase meter with 2 CTs for power line systems with V_nom= 140 to 300 V_(RMS), I_nom/ I_max= 5/100 A_(RMS), f_lin= 50/60 Hz ± 10% and T_amb= -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.

Main features

0.2% accuracy dual or split-phase meter
V _nom(RMS) = 140 to 300 V, I _nom /I _max(RMS) = 5/100 A, f _lin = 50/60 Hz ± 10%
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

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-20 12:14:08

Is it necessary to highlight the content of the forum’s core area?
Hi, everyone! Recently, some netizens complained that the essence of the forum's essence area is not obvious enough. For this reason, we have studied several display methods and would like to invite e
Have you ever purchased such a plastic shell?
I saw that several companies in Beijing and Shanghai are using this kind of plastic shell, which is pretty good. I don’t know if they make the mold themselves or purchase it from somewhere else
MSP430F247 hardware IIC controls PCF8591 conversion module
At first I thought hardware IIC was difficult, but after I adjusted it, I realized that it only needed a few words. Many programs may not be memorized after writing them, so I put them here for easy m
【Blog Help Post】Blog invitation function
[color=blue]After you open a blog in EEWORLD, you may want to invite your friends, classmates, and colleagues to visit your space. Then the invitation function of the blog can quickly help you realize
How is the navigation angle defined?
Could someone please tell me how the navigation angle is defined in the flight control system? Please be as detailed as possible. Thanks! To put it in detail, we need to determine the posture of an ob
How RFID BlueBooth works
Hello everyone: Now I want to add RFID BLUEBOOTH to my device, which is based on WINCE. Can you give me some tips? What interfaces are there for RFID \ Bluebooth? For example, if I use uart interface

Datasheet More

Circuits More