2
Getting started
2.1
Overview
The
•
Based on
•
interfaced using SPI with MCU
•
Current transformer (CT) and shunt sensing supported for current measurements
•
Shunt connected on the primary channel and CT on the secondary
•
Active energy difference of two channels signaling tamper condition
•
Magnetic tamper detection using Hall effect sensor by MCU interrupt line
•
EEPROM interfaced using I²C with MCU to store accumulated energy
•
Switch interface for case tamper and terminal cover tamper
•
Low power mode supported
•
Neutral missing tamper detection implemented using special duty cycling algorithm
•
Connectors for GPRS or Sub 1-GHz connectivity
•
Measuring RMS/instantaneous voltage, current, kW and power factor (PF)
•
Glass LCD (1/8 duty cycle and 20 segments) driven by the MCU LCD controller
2.2
Hardware requirements
The
input power must be supplied by 220 V
AC
. A load of few watts must be connected at
load end to test the application.
UM2898
Getting started
UM2898
-
Rev 1
page 3/31
