Description
The M553-CTX PowerCom is a complete single or three phase multifunction ac power transducer, providing RS485 Modbus communication and a pulsed output in a 55mm DIN enclosure.
Application
The M553-CTX model can be used on single phase and three phase systems without modification. It has a universal power supply which is suitable for ac or dc auxiliary voltages.
The M553-CTX covers a wide range of voltage inputs and CT and VT ratios can be programmed.
Parameters Measured
- Phase Voltage (V)
- Line Voltage (V)
- Phase Current (I)
- Frequency (Hz)
- Active Power per phase (W)
- System Active Power (W)
- Reactive Power per phase (VAr)
- System Reactive Power (VAr)
- Apparent Power per phase (VA)
- System Apparent Power (VA)
- Import Active Energy (kW.h)
- Export Active Energy (kW.h)
- Import Reactive Energy (kVAr.h)
- Export Reactive Energy (kVAr.h)
- Apparent Energy (kVA.h)
- Ampere Energy (A.h)
- Power Factor per phase (P.F.)
- System Power Factor (P.F.)
- Amp Demand (Ad)
- Watt Demand (Wd)
- V A Demand (VAd)
- Maximum Amp Demand (Max Ad)
- Maximum Watt Demand Import (Max Wd)
- Maximum Watt Demand Export (Max Wd)
- Maximum VA Demand (Max VAd)
- Neutral Current
- Hours Run (Voltage based)
Ordering Information
| Information Required | Example |
| Product Code | M553-CTX |
| Nominal input current | 1 or 5A AC |
| Option | Pulsed Output* |
If two pulse output required the RS485 will be removed
– relay to be confiqured at factory
Communication
The M553-CTX uses the well established Modbus protocol.
This enables remote reading and programming of the M553-CTX using a host computer.
The RS485 network allows up to 32 units to be connected in parallel, enabling them to be used with PC, PLC, RTU, Data loggers and Scada programs.
The PowerCom’s communication port incorporates an auto-configure function which, when connected to an existing Modbus network, will automatically detect the network’s parameters.
A red LED is provided to indicate that auxiliary power is present, and that the unit is communicating correctly.
Programming
The following can be programmed via the RS485 port: CT and VT ratios, pulse duration, asign relay (kW.h or VAr.h).
Software
MultiView set-up and monitoring software is available free of charge download here.
Pulsed Output
An optional pulsed output can be ordered. This can be assigned to W.h Var.h (import or export) A.h or VA.h.
Alternatively, it can be configured to act as set-point indicator.
System Types
Single Phase
Single phase 3 wire
3 phase 3 wire balanced load
3 phase 4 wire balanced load
3 phase 3 wire unbalanced load
3 phase 4 wire unbalanced load
General Specification
| INPUT | |
| Rated Un | Direct connected voltages between 28 to 330V L-N. 48V to 570V L-L. (280V L-N. Nominal) |
| Range Un | |
| Overload | |
| Rated In | 1A or 5A nominal |
| Range In | 2-120% via C.T. |
| De-rate Point | 2% In |
| Overload | 4xIn for 1 second |
| Burden | 0.5VA per phase Volts & Amps |
| Frequency | 45-65Hz |
| ACCURACY | |
| Specified @ 23°C 10%-Un 10%-In | |
| Parameters unless stated | Class 0.3% to IEC 688 |
| Volts and Amps | Class 0.25% to IEC 688 |
| Frequency Class | 0.1Hz to IEC 688 |
| Power Factor Class | 1.0% to IEC 688 |
| Active & Reactive Energy | 1% of reading to IEC 1036 |
| 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 |
| ELECTROMAGNETIC COMPATIBILITY | |
| 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 |
| AUXILIARY | |
| 100 to 440V AC 100 to 420V DC 45 to 65Hz Burden <10VA | |
| ENVIRONMENTAL | |
| Working Temperature | 0 to +60 deg C |
| Storage Temperature | -30 to +65 deg C |
| Temperature Coefficient | 0.01% per deg C |
| OPTIONS | |
| Low voltage DC auxiliary | 19-69V dc |
| Frequency | 380-420Hz |
| DC measurement | |
| APPLIED STANDARDS | |
| General | IEC 688 BSEN60688 BS4889 IEC 359 Safety IEC 6101-1 2010 |
| APPROVALS | |
| UL, C-UL, | Pending |
Dimensions (MM)
Connection Diagrams
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