Mx37y_Technical_Description_ENG_v2.00.doc
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─ Single- and three-phase electronic meters with built-in DLC
modem, GSM/GPRS modem or RS485 comm. interface
For single phase meters BS terminal block (Imax =
100 A) is possible too.
2.2. Overall and fixing dimensions
(ME37y)
Fig. 5a: Overall and fixing dimensions of a meter fitted with
a long terminal cover
Fig. 5b: Overall and fixing dimensions of a meter fitted with
a short terminal cover
2.3. Meter configuration (ME37y)
SD
SD - Switching device
Fig. 6: ME371 meter block diagram
GSM/GPRS MODEM
or
Rs485 COMMUNICATION INTERFACE
SD - Switching device
Fig. 7: ME372 meter block diagram
2.4. Metering system (ME37y)
Besides precision measurement of active, reactive,
apparent energy and demand in a wide metering and
temperature range, the metering system enables
measurement of phase voltages, currents and supply
quality.
One metering element is built in the meter. The
current sensor is shunt, while voltage sensor is
resistive voltage divider. Signals of currents and
voltages are fed to the A/D converters, and then they
are digitally multiplied so that instantaneous power is
calculated. The instantaneous powers are integrated
and summed in a microcontroller, as well as further
processed.
SD
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