This document provides operating, maintenance and installation instructions . The unit measures and displays the characteristics of single phase two wires and three phase four wires supplies, including voltage, frequency, current, power and active and reactive energy, imported or exported. Energy is measured in terms of kWh, kVarh. Maximum demand current can be measured over preset periods of up to 60minutes. In order to measure energy, the unit requires voltage and current inputs in addition to the supply required to power the product. The requisite current input(s) are obtained via current transformers (CT).

This meter can be configured to work with a wide range of CTs, giving the unit a wide range of operation. Built-in interfaces provide pulse and RS485 Modbus RTU outputs. Configuration is password protected.

The unit can be powered from a separate auxiliary (AC or DC) supply. Alternatively it can be powered from the monitored supply, where appropriate.


1.1 Unit Characteristics
The Unit can measure and display:
 Line voltage and THD% (total harmonic distortion) of all phases
 Line Frequency
 Currents, Current demands and current THD% of all phases
 Power, maximum power demand and power factor
 Active energy imported and exported
 Reactive energy imported and exported
The unit has password-protected set-up screens for:
 Changing password
 Supply system selection 1phase2wire, 3phase 4wires
 CT Ratio (1 to9999 )
 PT ratio (1 to 9999)
 Demand Interval time
 Reset for demand measurements
 Pulse output duration
A pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring from another display or a computer.


Voltage 0•5% of range maximum
Current 0•5% of nominal
Frequency 0•2% of mid-frequency
Power factor 1% of unity (0.01)
Active power (W) ±1% of range maximum
Reactive power (VAr) ±2% of range maximum
Apparent power (VA) ±1% of range maximum
Active energy (Wh) Class 1 IEC 62053-21
Reactive energy (VARh) ±2% of range maximum