UM1554 Datasheet, PDF (1/34 Pages) STMicroelectronics – This document describes the functioning

UM1554
User manual
Single-phase energy meter with Rogowski coil sensors
based on the STPM01 and STM8L MCU
Introduction
This document describes the functioning of a single-phase energy meter with Rogowski coil
sensors based on the STPM01 and STM8L MCU. The demonstration board solution is a
fully functional single-phase solution with parameter display, tamper management,
maximum demand (MD) calculation, EEPROM data logging and low-power management.
Meter specifications:
■ Accuracy: class 1 with dynamic range 200:1
■ Nominal voltage: 240 V
■ Nominal current: 10 A (I_TYP)
■ Maximum current: 80 A (I_MAX)
■ Operating range: 0.6 Vb to 1.2 Vb
■ Meter constant: 1600 impulses/kWh
■ Power frequency range: 45 Hz to 65 Hz
■ Sensor: primary side Rogowski coil and secondary side Rogowski coil
Figure 1. Single-phase energy meter with Rogowski coil sensors based on the
STPM01 and STM8L MCU
August 2012
Doc ID 023381 Rev 1
1/34
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