PowerRelay Transducer


PowerRelay Transducer

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M570 Introduction

The M570 PowerRelay is a complete single phase or three phase multifunction AC power transducer, providing up to three set point relay outputs, one energy relay and an RS485 communication port. Several of the parameters measured by PowerRelay can be assigned to the set point relays.

The M570 measures Voltages, Currents, Import/Export Power (W, VAr, VA), True Power Factor, Frequency, Import/Export Demands(Wd, VArd, VAd, Ad) and Import/Export Energy (W.h, VAr.h, VA.h, and A.h)

An option of pulsed output via a relay is offered. The pulsed output can be assigned to W.h, Var.h (import or export), A.h or VA.h.

Using the RS485 port and Modbus protocol, all measured quantities can be obtained, the system's parameters can be set up, important data can be saved to computer and the order of the Modbus registers themselves can be changed.

Product Code M570-PR9
Nominal input voltage 230/400V AC
Nominal input current 5A AC
System Frequency 50Hz
Auxiliary 230V
Option RS485 Modbus.


Input (accuracy range)
Rated Un:
Direct connected voltages between 57.8V and 600V.
Standard voltages offered :-
3ph 4w - 63.5/110V, 69.3/120V, 120/208V, 220/380V, 230/400V, 240/415V, 277/480V
3ph 3w - 110V, 120V, 380V, 400V, 415V, 440V, 480V
Range 2-120% Un
Rated In:
1A or 5A
Range 0 - 120%
Frequency 50 / 60 Hz nominal range
45/65Hz working

1.5 x Un continuous, 4 x Un for 1 second
4 x In continuous, 50 x In for 1 second

Un 0.5VA per phase
In 0.5VA per phase
M570-PR1 Single phase
M570-PR1-3 Single phase 3 wire
M570-PR4 3 phase 3 wire unbalanced load
M570-PR9 3 phase 4 wire unbalanced load
M570-PR2 3 phase 3 wire balanced load
M570-PR3 3 phase 4 wire balanced load

Specified@ 23 °C 10%-Un 10%-In
Volt Class 0.2% to IEC 688
Amps Class 0.2% to IEC 688
Frequency Class 0.1Hz to IEC 688
Power Factor Class 1.0% to IEC 688
Active Power Class 0.2% to IEC 688
Reactive Power Class 0.2% to IEC 688
Apparent Power Class 0.2% to IEC 688
Active Energy 1% of reading IEC 1036
Reactive Energy 1% of reading IEC 1036

AC 115V, 230V or 277V (±15%)
DC 12V/24V/48V/110V/125V

UL. C-UL, CSA Pending

Test Voltage:
4kV RMS 50Hz for 1 min between input, case, auxiliary, RS485 3kV RS485 / 1.5kV Relay
Impulse Test:
EMC 5kV transient complying with IEC 801/EN 55020 HF
Surge Withstand:
IEC801/EN55020 ANSI C37.90A
HF interference:
EHF 2.5kV 1MHz complying with IEC255-4
Class II Complying with IEC348

Working Temperature 0 to +60 °C
Storage Temperature -30 to +65 °C
Temperature Coefficient 0.01% per °C
Relatively Humidity 0-95% non condensing
Warm up time 1 min.
Shock 20G in 3 planes

Fixing Snap on to Din rail 35 x 7.5mm complies with DIN-EN50022
Mounting Any position
Enclosure Code Case IP 50/terminals IP30
Complies with IEC529 BS5490 DIN40050

Applied Standards
General IEC688 BSEN60688, BS4889, IEC359
EMC Emissions EN61326-1
Immunity EN61326-2
Safety EN61010-1

Pulsed Output
Pulsed output W.h or VAr.h or VA.h or A.h
User progammable import or export

Serial communication RS485 using Modbus protocol
Baud Rate Programmable 2400,4800,9600,19200
Parity Odd, Even or None
Auto Detection RS485