MCP3901_12 datasheet(11/46 Pages) MICROCHIP

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MCP3901 AND PIC18F65J90

ENERGY METER

REFERENCE DESIGN

DS51968A-page 11

Chapter 1. Product Overview

1.1

INTRODUCTION

The MCP3901 and PIC18F65J90 Energy Meter Reference Design is a fully functional

IEC Class 0.5 compliant single-phase meter. This low-cost design does not use any

transformers and requires few external components. The PIC18F65J90 directly drives

the LCD, and includes both an isolated USB connection for meter calibration and

access to the device power calculations. The system calculates active energy, active

power, RMS current, RMS voltage, reactive energy, reactive power, apparent power

and other typical power quantities.

The Microchip Energy Meter 1-Phase Software is used to calibrate and monitor the

system, and can be used to create custom calibration setups. For some accuracy

requirements, only a single point calibration may be needed. The energy meter

software offers an automated step-by-step calibration process that can be used to

quickly calibrate energy meters.

FIGURE 1-1:

MCP3901 and PIC18F65J90 Single-Phase Energy Meter.

MCP3901 Datasheet(PDF) 11 Page - Microchip Technology