Landis+Gyr E650 Series User Manual page 9

Device description
D000030108 en m – E650 Series 3 – ZMD300AT/CT – User Manual

Flexible measuring system through parameterisation (definition of
different variables by software)

Correct measurement even with failure of individual phases, or when
used in two- or single-phase networks

Wide range of measurement from starting current to maximum current

Optical interface according to IEC 62056-21 and DLMS
– For direct readout of meter data
– For service functions of the meter, extension board and
communication unit (e.g. parameterisation)

Inputs for recording fixed valency pulses (communication unit)

Output contacts (solid-state relays) for fixed valency pulses, control
signals and status messages

Output contacts (relays) for control and status messages

Installation aids
– Indication of phase voltages, phase angles, rotating field and
direction of energy

Storage of event information, e.g. voltage failures, exceeding of
thresholds or error messages. Event information can be read out via
the available interfaces. Important events can be communicated to the
energy supply company as operational messages (sending of SMS
messages, control of an arrow in the display, drive for an output
contact, etc.).

Interfaces such as CS, RS232, RS485, modem, etc. for remote trans-
mission of data (communication unit)

Auxiliary power supply for communication with the meter if no
measuring voltage is present
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