ABB 615 series Technical Manual page 909

1MAC059074-MB A
615 series ANSI
Technical Manual
( 40 0 ) 2500 1000 /
− ×
( )
t s
=
0 40 0 30 100 . . %
− ×
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Table 792: 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)
Three-phase power and energy
measurement (P, E)
1) The value provided is for REF615, RET615 and REM615 in 50 Hz network. The value for 60 Hz network is
90/36 (=54 Hz). For REG615 the values are 75/10 (=65 Hz) in 50 Hz network and 90/12 (=78 Hz) in 60 Hz
network.
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 A B B
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Once the complex apparent power is calculated, P, Q, S and PF are calculated with the
equations:
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 8
Measurement functions
Maximum/minimum (=range)
40/0 (=40xIn)
4/0 (=4xVn)
40/0 (=40xIn)
4/0 (=4xVn)
75/35 (=40 Hz) 1)
40/0 (=40xIn)
4/0 (=4xVn)
(Equation 165)
903