ENERGY ANALYSIS
PRODUCT FUNCTIONS
1TNC928250M0201
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3.2
Energy analysis
3.2.1
Energy
Description
Range
Accuracy (accord. to
IEC 61557-12)
Active energy import Ea +
0 to 99999999 kWh
0.5
Active energy export Ea -
0 to 99999999 kWh
0.5
Reactive energy import ErV +
0 to 99999999 kvarh
2
Reactive energy export ErV -
0 to 99999999 kvarh
2
Apparent energy EapA
0 to 99999999 kVAh
1
The type of load can be represented geometrically by four quadrants.
In the first quadrant the load is inductive. Both active and reactive energy are imported, i.e.
energy is imported from the utility to the consumer load.
In the second quadrant the load is capacitive in which active energy is exported and reactive
energy is imported.
In the third quadrant the load is inductive. Both active and reactive energy are exported to the
network.
In the last quadrant the load is capacitive in which active energy is imported while reactive
energy is exported.
Figure 22: Four-quadrant representation of active and reactive power and energy
