M550 Introduction

The M550 is a fully programmable three phase power transducer with an isolated RS485 based communication port using Modicon's Modbus protocol.
Its accuracy is class 0.2% for input signals down to 10% Un and 10% In, (1% of reading for energy measurements.IEC1036), 50-60Hz.

The M553 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, are pulsed through a relay)

All measured quantities can be obtained from the transducer, the system's parameters can be set up remotely, important data can be saved to computer and the order of the Modbus registers themselves can be changed. The relay installed in the M550 can be used as a flexible monitoring relay.

N.B. for firmware revisions 0.3.01.00-03-09-04 and later, the M550’s relay can have up to eight conditions attached to it, creating a very flexible monitoring system.

ORDERING INFORMATION
Example:
Product Code M550-CT9
Nominal input voltage 230/400V AC
Nominal input current 5A AC
System Frequency 50Hz
Auxiliary 230V AC
Options Pulsed Output

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

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

Burden
Un 0.5VA per phase
In 0.5VA per phase

Systems
M550-CT1 Single phase
M550-CT1-3 Single phase 3 wire
M550-CT4 3 phase 3 wire unbalanced load
M550-CT9 3 phase 4 wire unbalanced load
M550-CT2 3 phase 3 wire balanced load
M550-CT3 3 phase 4 wire balanced load

Accuracy
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

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

Approvals
UL. C-UL, CSA Pending

Insulation
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
Protection:
Class II Complying with IEC348

Environment
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

Enclosure
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

Communications
Serial communication RS485 using Modbus protocol
Baud Rate Programmable 2400,4800,9600,19200,38400,57600
Parity Odd, Even or None
Auto Detection RS485

M553 Introduction

The M553 is a fully programmable three phase power transducer with an isolated RS485 based communication port using Modicon's Modbus protocol.
Its accuracy is class 0.25% for input signals down to 10% Un and 10% In, 0.3% for power measurements and 1% of reading for energy measurements. (IEC1036), 50-60Hz.

The M553 measures Voltages, Currents, Import/Export Power (kW, kVAr, kVA), True Power Factor, Frequency, Import/Export Demands(kWd, kVArd, kVAd, Ad) and Import/Export Energy (kW.h, kVAr.h, kVA.h, and A.h, are pulsed through a solid state relay)

All measured quantities can be obtained from the transducer, the system's parameters can be set up remotely, important data can be saved to computer and the order of the Modbus registers themselves can be changed. The relay installed in the M553 can be used as a flexible monitoring relay.

The M553’s relay can have up to eight conditions attached to it, creating a very flexible monitoring system.

ORDERING INFORMATION
Example:
Product Code M553-CTX
Nominal input voltage 280/485V AC
Nominal input current 5A AC
System Frequency 50Hz

M553 specification

Input (accuracy range)
Rated Un:
Directly connected voltages:
28V to 330V L-N (48V to 570V L-L)
Range 2-120% Un
Rated In:
1A or 5A
Range 0 - 120%
Frequency 50/60 Hz nominal range
45/65Hz working

Overload
4 x In for 1 second

Burden
Un 0.5VA per phase
In 0.5VA per phase

Accuracy
Specified@ 23 °C 10%-Un 10%-In
Parameters unless stated: Class 0.3% to IEC 688
Volt Class 0.25% to IEC 688
Amps Class 0.25% to IEC 688
Frequency Class 0.1Hz to IEC 688
Power Factor Class 1.0% to IEC 688
Active Energy 1% of reading IEC 1036
Reactive Energy 1% of reading IEC 1036

Auxiliary
100V to 440V ac, 100V to 420V dc

Approvals
UL. C-UL Pending

Electromagnetic Compatibilty
Immunity:
electrostatic discharges: IEC 61000-4-2-Level III radiated radio-Hz fields: IEC 61000-4-3-Level III electrical fast transient/bursts: IEC 61000-4-4-Level III
impulse waves: IEC 61000-4-5-Level III
conducted disturbances: IEC 61000-4-6-Level III voltage dips & short interruptions: IEC 61000-4-11 Emissions:
Conducted and radiated CISPR11-Class A

Insulation
Installation category III (480 VAC ph/ph)
Degree of pollution 2
Rated impulse withstand voltage IEC60947-1-V imp:4kV
Electrical security IEC 61010-1
Inputs + Aux to case 3kV rms 50Hz for 1 min
Inputs + Aux to RS485 3kV rms 50Hz for 1 min Inputs + Aux to relay 1k5V rms 50Hz for 1 min

Environment
Working Temperature 0 to +60 deg C
Storage Temperature -30 to +65 deg C
Temperature Coefficient 0.01% per deg C
Warm up time 1 min.
Shock 20G in 3 planes

Options
Low voltage dc auxiliary 19-69V dc
Frequency 380-420Hz
dc measurement

Enclosure
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 IEC 688 BSEN60688 BS4889 IEC 359
Safety IEC 6101-1 2010

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

Communications
Serial communication RS485 using Modbus protocol
Baud Rate Programmable 2400,4800,9600,19200,38400,57600
Parity Odd, Even or None
Auto Detection RS485

M553 dc Introduction

The M553 is a fully programmable dc power transducer with an isolated RS485 based communication port using Modicon's Modbus protocol.
Its accuracy is class 0.25% for input signals down to 10% Un and 10% In, 0.3% for power measurements and 1% of reading for energy measurements. (IEC1036)

The M553 measures Voltage (dc V), Current (dc A), Import/Export Power (dc kW, dc kVA), Import/Export Demands(dc kWd, dc kVAd),
Amp demand (dc Ad),
Import/Export Energy (dc kW.h, dc kVA.h),
Ampere Hours (dc A.h)
Hours Run (HH.MM)
Energy quantities can be pulsed through an optional on board solid state relay.

All measured quantities can be obtained from the transducer, the system's parameters can be set up remotely, important data can be saved to computer and the order of the Modbus registers themselves can be changed.

The relay installed in the M553 can be used as a flexible monitoring relay. It can have up to eight conditions attached to it, creating a very flexible monitoring system.

ORDERING INFORMATION
Example:
Product Code M553-CTXDC
Nominal input voltage 800V dc
Nominal input current 50mV dc

M553 dc specification

Input (accuracy range)
Rated Un Directly connected:
800Vdc, 300Vdc, 150Vdc or 60Vdc
Range 2-120%
Un Overload 120% Un
Rated In:
mV dc, 1A dc or 5A dc
Range 2-120% In
Overload 120% In
Overload 2 x In for 1 second

Accuracy
Specified @ 23°C 10-100% Un, 10-100% In Parameters unless stated Class 0.3% to IEC 688
Volts and Amps Class 0.25% to IEC 688
Energy 1% of reading to IEC 1036

Auxiliary
Standard: 100-440Vac/100-420Vdc
Optional: 19-69Vdc

Electromagnetic Compatibilty
Immunity to :
electrostatic discharges:IEC 61000-4-2-Level III radiated radio-Hz fields:IEC 61000-4-3-Level III electrical fast transient/bursts:IEC 61000-4-4-Level III
impulse waves:IEC 61000-4-5-Level III conducted disturbances:IEC 61000-4-6-Level III voltage dips & short interruptions:IEC 61000-4-11
Emissions to:
Conducted and radiated CISPR11-Class A

Applied Standards
General:
IEC 688 BSEN60688
BS4889 IEC 359
Safety:
IEC 6101-1 2010

Insulation
Installation category III
Degree of pollution 2
Rated impulse withstand voltage:
IEC60947-1-V imp:4kV
Electrical security IEC 61010-1
Inputs + Aux to case 3kV rms 50Hz for 1 min
Inputs + Aux to RS485 3kV rms 50Hz for 1 min Inputs + Aux to relay 1k5V rms 50Hz for 1 min

Environment
Working Temperature 0 to +60 deg C
Storage Temperature -30 to +65 deg C
Temperature Coefficient 0.01% per deg C

Options
Solid-state, low voltage relay.
Rated: 100V, 150mA, 8ohm max

Approvals
UL. C-UL Pending

Enclosure
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

Pulsed Output
Solid-state, low voltage relay.
Rated: 100Vpk, 120mA

Communications
Serial communication RS485 using Modbus protocol
Baud Rate Programmable 2400,4800,9600,19200,38400,57600
Parity Odd, Even or None
Auto Detection RS485