ABB REG650 Technical Manual page 382

Section 13
Monitoring
376
=
Q Im( ) S
EQUATION1404 V1 EN
= = 2 + 2
S S P Q
EQUATION1405 V1 EN
P
j
= =
PF cos
S
EQUATION1406 V1 EN
Additionally to the power factor value the two binary output signals from the
function are provided which indicates the angular relationship between current and
voltage phasors. Binary output signal ILAG is set to one when current phasor is
lagging behind voltage phasor. Binary output signal ILEAD is set to one when
current phasor is leading the voltage phasor.
Each analogue output has a corresponding supervision level output (X_RANGE).
The output signal is an integer in the interval 0-4, see section
supervision".
Calibration of analog inputs
Measured currents and voltages used in the CVMMXN function can be calibrated
to get class 0.5 measuring accuracy. This is achieved by amplitude and angle
compensation at 5, 30 and 100% of rated current and voltage. The compensation
below 5% and above 100% is constant and linear in between, see example in
figure 193.
1MRK 502 034-UEN -
(Equation 103)
(Equation 104)
(Equation 105)
"Measurement
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