Carlo Gavazzi WM4-96 - Manual (Page 78)

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78
Technical features
WM4 Soft
73
Additional errors
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power quality analysis (LV or MV/HV connection). Indirect
energy and power measurements by means of watt-hour
meters (LV or MV/HV connection); Direct measurements for
the instantaneous variables (LV connection) and indirect
measurements for the energy variables (LV or MV/HV). It’s
possible to add the management of gas and water metering
to all of these working modes.
Pulse weight: water/gas meter inputs: from 1 to 10000 puls-
es/m 3 , energy from 0.01 to 10000.00 pulses/kWh/kvarh/kWh-
/kvar-
Transformer ratio
CT up to 30000 A; VT up to 600 kV.
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Filters
Filter operating range: 0 to 99.9% of the input electrical
scale.
Filtering coefficient: 1 to 255.
Filter action: display, alarms, serial outputs (fundamental
variables: V, A, W and their derived ones).
Event logging: RS232 + RTC + data memory.
Type of data: alarms and max./min. (max. 480 events)
stored with date (dd:mm:yy) and hour (hh:mm:ss) reference,
data logger and load profile.
Sampling management: only for data logger and load pro-
file. The sample stored within the selected time interval
results from the continuous average of the measured values.
The average is calculated (min. sample) with an interval
within two following measurements of approx. 200ms.