Summation Channels; Data Profile - Landis+Gyr E650 Series User Manual

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2.5.5

Summation channels

2.6

Data profile

© Landis+Gyr
the fundamental wave.
+A
+THD = +A - (+A
-A
-THD = -A - (-A
Figure 16. Calculation of total harmonic distortion
In addition, the following absolute and relative THD values available:

THD of active energy (relative to the nominal active energy)

THD of phase voltages (absolute)

THD of voltage (relative to the nominal voltage)

THD of phase currents (absolute)

THD of phase current (relative to the nominal current)
The values of two measurement quantities (incl. pulse inputs EX1 and EX2)
can be added. The added quantities must be of the same energy type
(active, reactive or apparent). The sum is stored in a total energy register.
Energy registers which contain the summation of two measured quantities
(summation channels) cannot be used for tariffication.
ME1
EX1
EX2
MExx
Figure 17. Summation channels
A non-volatile memory (FLASH memory) contains the data of:

The stored value profile

The load profile 1

The load profile 2 (optional)

The event log

The three groups of dedicated event logs
The flash memory stores data without data loss in case of voltage failures.
No battery is required for this purpose.
The total size of the available memory for the stored billing value profile, the
load profile(s), the event log and the dedicated event logs is 1.8 MB.
A fundamental
)
A fundamental
+
D000030108 en m – E650 Series 3 – ZMD300AT/CT – User Manual
Device description
+THD
)
A
-THD
A
Total energy register