Description
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.
For extra information on additional variations, please visit our website here, or contact Multitek-Ltd directly.
Specifications
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
