TECHNICAL DESCRIPTION Kamstrup 162M/382M
5512-1040 GB/05.2012/Rev. C1
12
R+ Reactive positive energy. Positive inductive energy from quadrant 1 and positive capacitive energy
from quadrant 2 are displayed in kvarh.
R- Reactive negative energy. Negative inductive energy from quadrant 3 and negative capacitive energy
from quadrant 4 are displayed in kvarh.
R1 Ri+ Reactive positive energy. Positive inductive energy from quadrant 1 is displayed in kvarh.
R4 Rc- Reactive negative energy. Negative capacitive energy from quadrant 4 is displayed in kvarh.
Furthermore, the above energy types are registered in tariffed registers T1, T2, T3, T4, T5, T6, T7 and T8.
For further information about tariff control, see section 3.4.
In addition, bidirectional positive registration in a register, i.e. active energy for import and export added
numerically, can be selected as a special register (control register). This register sums the energy positively
without considering whether the input and output terminals per system have been interchanged.
A1423 Numeric register for |A+| + |A-|. The value is displayed in kWh.
3.2.2 Energy calculation
There are several acceptable methods for calculating the energy in three-phase meters.
Three identical meters can obtain several different results for energy measurement dependent on the calculation
method.
If energy is imported on phases L1 and L2, and energy is exported on phase L3 as shown in Figure 2, the
calculation can be made according to the methods described below.
A- A+
L1
L3
L2
Figure 2: Example of energy consumption in a three-phase meter.
Figure 3 graphically shows the calculation of the total energy dependent on the applied calculation method. The
first method applies vector summation, which is known from the Ferraris meters where the energy is added in
consideration of sign. In the next example import and export are added individually, and finally is shown the
calculation with total summation where all contributions are added numerically is shown.
To Next Page
Loading...
Need help?
General
