ABB RED615 Technical Manual page 638

Section 8
Measurement functions
632
GUID-9947B4F2-CD26-4F85-BF57-EAF1593AAE1B V1 EN
Figure 344: Complex power and power quadrants
Table 534: Power quadrants
Quadrant Current
Q1 Lagging
Q2 Lagging
Q3 Leading
Q4 Leading
The active power P direction can be selected between forward and reverse with
Active power Dir and correspondingly the reactive power Q direction can be
selected with Reactive power Dir. This affects also the accumulated energy directions.
The accumulated energy is calculated separately as forward active
(EA_FWD_ACM), reverse active (EA_RV_ACM), forward reactive (ER_FWD_ACM)
and reverse reactive (ER_RV_ACM). Depending on the value of the unit multiplier
selected with Energy unit Mult, the calculated power values are presented in units
of kWh/kVArh or in units of MWh/MVArh.
When the energy counter reaches its defined maximum value, the counter value is
reset and restarted from zero. Changing the value of the Energy unit Mult setting
resets the accumulated energy values to the initial values, that is, EA_FWD_ACM to
Forward Wh Initial, EA_RV_ACM to Reverse Wh Initial, ER_FWD_ACM to
Forward WArh Initial and ER_RV_ACM to Reverse WArh Initial. It is also possible
to reset the accumulated energy to initial values through a parameter or with the
RSTACM input.
P Q
+ +
- +
- -
+ -
1YHT530004D05 D
PF Power
0...+1.00 +ind
0...-1.00 -cap
0...-1.00 -ind
0...+1.00 +cap
615 series
Technical Manual