ABB RELION REX640 Technical Manual page 1301

1MRS759142 C
REX640
Technical Manual
2 2
S S P Q
= = +
GUID-B3999831-E376-4DAF-BF36-BA6F761230A9 V2 EN
P
Cos
ϕ =
S
GUID-D729F661-94F9-48B1-8FA0-06E84A6F014C V2 EN
The calculated powers are available as function outputs S_INST, P_INST, Q_INST
and the power factor angle as PF_INST.
Depending on the unit multiplier selected with Power unit Mult, the calculated power
values in the monitored data and measurement view are presented in units of
kVA/kW/kVAr or in units of MVA/MW/MVAr.
GUID-171085AB-AD2C-4F8B-919A-200A66BE923F V1 EN
Figure 702: Complex power and power quadrants
Table 1213: 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.
Measurement functions
P Q
+ +
- +
- -
+ -
Section 8
(Equation 315)
(Equation 316)
PF Power
0...+1.00 +ind
0...-1.00 -cap
0...-1.00 -ind
0...+1.00 +cap
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