The Multifunction Energy Meter is a panel mounted 96 x 96mm DIN Quadratic Digital Panel Meter, which
measures important electrical parameters in 3 ph 4 wire / 3 wire / 1ph Network and replaces the multiple
analog panel meters. It measures electrical parameters like AC voltage, Current, Frequency, Power, Energy
(Active / Reactive / Apparent), phase angle, power factor,individual harmonics & many more. The instrument
integrates accurate measurement technology (All Voltages & current measurements are True RMS upto 31st
Harmonic) with LCD display with backlit.
It can be configured & Programmed at site for the following :PT Primary, PT Secondary, CT Primary, CT
Secondary , 3 Phase 3W, 3 Phase 4W, 1 Phase 2W system.
The front panel has three push buttons using which the user can scroll through different screens & configure
the product. The front panel also has Impulse red led, flashing at rate proportional to measured power.
Up Key
Enter Key
Down Key
Energy/Counter Screen
Measurement Screen
Load Graphics
Phase Sequence
Indication
Impulse LED
1. Introduction
Operation via standard RS485 is also possible. Through this optional interface all the above mentioned
parameters can be configured and programmed. For modbus service, it is essential that device address, baud rate
and parity should be configured properly.
This document specifies only the interface between a Master device and Meter for electrical variable through
MODBUS over RS485.
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