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Abbreviations
A Active energy
+A Positive active energy (customer imports from utility)
-A Negative active energy (customer exports to utility)
lAl Measuring of absolute value of A
Cl. Accuracy class
DIN Deutsches Institut für Normung e.V.
(German Institute for standards)
EN European standards
EVU Utility
IEC International Electromechanical Commission
Imp. Impulse
Imp./kWh Impulse per kWh
Imp./kvarh Impulse per kvarh
L1, L2, L3 External conductor
LED Light Emitting Diode
MP Measuring period (only for maximum demand measuring)
N Neutral conductor
P Active power
+P Positive active power (customer imports from utility)
-P Negative active power (customer exports to utility)
PTB PTB (German certified body)
Q Reactive power
+Q Positive reactive power
+R Positive reactive energy
-R Negative reactive energy (customer exports to utility)
lRl Measuring of absolute value of R
RTC Real Time Clock
S0 Interface accord. to DIN 43 864
raconet radio readout system of EMH
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