Mega MEg40+ - Page 3

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Universal Energy Meter MEg40
+
Universal energy meter MEg40
+
1/ PURPOSE AND DESCRIPTION
e universal energy meter MEg40+ works as an energy meter and a monitor at the same
time. In the function of the energy meter, it has a set of six energy registers for each phase.
In the function of the monitor, it records long-term voltage, current and power curves
and according to the voltage quality standard ČSN EN 50160 ed. 3, it registers voltage
deviations in class S. e values of energies and recorded quantities are shown on the
display. e instrument MEg40
+
is designed for LV, MV and HV measurements.
For LV measurements, it is possible to use both the basic version and the version
MEg40+/S1, which uses split core instrument transformers SMART PTD to indirectly
measure currents. e version MEg40
+
/S3 uses exible current sensors AMOSm to measure
currents; this version can be installed in uninterrupted power supply technology PPN (live-
line working).
1)
e universal energy meter MEg40
+
is an instrument of the measurement category IV,
it is designed for installation in unprotected circuits of LV stations and substitutes classic
pointer registering instruments and also four-quadrant energy meters.
MEg40
+
stores all measured data in the Flash data memory for further processing in PC
or PDA and archiving in database tools. e internal 4 MB data memory can be replaced
by a removable 16 MB memory card of special design that enables fast and on personnel
and technical means undemanding data transfer into information systems. e standard
communication interface of the instrument MEg40
+
is USB 2.0. It is made also in versions
with the RS232 / RS485 interface that are used to integrate the instrument MEg40
+
into
measuring systems. e USBhost / RS485 converter can be also additionally connected to
the instrument MEg40
+
made with USB 2.0 interface.
e measuring modes and conversion constants of components of the measurement chain
can be programmed from the keyboard of the instrument or more comfortably using PC.
e user program of the instrument MEg40
+
evaluates data of one instrument in PC. Data
measured by more instruments MEg40
+
and archived in a database can be processed using
the system software WebDatOr. e user SW is described in the User manual MEg40
+
.
1)
e versions of MEg40
+
/S1 and MEg40+/S3 are described in separate manuals.