Specifications

3
1.1 General
PowerCom M550 communication transducer is a complete
measuring system in a single 100mm Din rail mount case.
Measuring Phase Volts, Phase Current, Frequency, Active
Power, Reactive Power, Energy and Demand. The M550
provides a RS485 modbus output and all above parameters
can be monitored via the Modbus output.
Power Systems :-
Product code
1 Ph. M550-CT1
1 Ph. 3 Wire M550-CT1-3
3 Ph. 3W unbalanced load M550-CT4
3 Ph. 4W unbalanced load M550-MT9
1.2 Parameters Measured
The M550 Measures the following parameters :
Phase 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 (W.h), Export Active
Energy (W.h), Import Reactive Energy (VAr.h),
The M550 units are fully programmed by the factory and
no further programming is necessary. If required, the User
can reprogram parameters to individual requirements, such
as the voltage and current ratios, relay output, demand
times etc. These programming operations are covered in
this manual.
The M550 uses a high speed microprocessor and analogue
to digital conversion circuitry. Each phase current and
voltage is measured continuously and all other parameters
are derived from these measurements in the software.
Voltage and current measurements are true RMS.
M550MAN.PM5 01/08/101, 12:483