ABB RELION 620 Series Technical Manual page 643

1MAC504801-IB E
620 series ANSI
Technical Manual
I_INST_A = I_DB_A = 0.30
If I_INST_A changes to 0.40, the reporting delay is:
( 40 0 − ) × 2500 1000 /
t s ( ) =
− ×
0 40 0 30 100 . . %
GUID-D1C387B1-4F2E-4A28-AFEA-431687DDF9FE V1 EN
Table 461: Parameters for deadband calculation
Function
Three-phase current
measurement (IA, IB, IC)
Three-phase voltage
measurement (VA, VB, VC)
Ground current measurement
(IG)
Ground voltage measurement
(VG)
Frequency measurement (F)
Phase sequence current
measurement (I1, I2, I0)
Phase sequence voltage
measurement (V1, V2, V0)
Single-phase power and energy
measurement (SP, SE)
Three-phase power and energy
measurement (P, E)
In the power and energy measurement functions P, E and SP, SE, the
deadband supervision is done separately for apparent power S, with the
preset value of fixed 10 percent of the Sn and the power factor PF, with the
preset values fixed at 0.10. All the power measurement-related values P,
Q, S and PF are reported simultaneously when either one of the S or PF
values exceeds the preset limit.
Power and energy calculation
The single-phase and three-phase power is calculated from the phase-to-ground voltages
and phase-to-ground currents. The power measurement function is capable of calculating
a complex power based on the fundamental frequency component phasors (DFT).
* *
S = (V ⋅ I + V ⋅ I +
A B
A B
GUID-8BF2FBFE-B33B-4B49-86AA-C1B326BBBAC1-ANSI V1 EN
= 10 s
Settings
A deadband
V Deadband
A deadband res
V deadband res
F deadband
Ps Seq A deadband , Ng Seq A
deadband , Zro A deadband
Ps Seq V deadband , Ng Seq V
deadband , Zro V deadband
-
-
*
V ⋅ I )
C
C
Section 7
Measurement functions
Maximum/minimum (=range)
40 / 0 (=40xIn)
4 / 0 (=4xVn)
40 / 0 (=40xIn)
4 / 0 (=4xVn)
75 / 35 (=40Hz)
40 / 0 (=40xIn)
4/0 (=4xVn)
(Equation 96)
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