11.2.2 Fault Current Detection Function - Veesta World V-RTU2000 Series Technical Information

V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
Parameter Digits
Vx3 4 9.9.9.9. V/KV
Ax3 4 9.9.9.9. A/KA
Watts 4 9.9.9.9. W/KW/MW/GW
Vars 4 9.9.9.9. Var/KVar/MVar/GVar
VA 4 9.9.9.9. VA/KVA/MVA/GVA
PF 4 1.000
WH 7 9.9.9.9.9.9.9. WH/KWH/MWH/GWH
VarH 7 9.9.9.9.9.9.9. VarH/KVarH/MVarH/GVarH
A0 4 9.9.9.9. A/KA
AFx3,AF0 4 9.9.9.9. A/KA
Hz 4 70.00
Angle 4 359.9 DG
* Accuracy performance range for WH/VarH, PF
(-10 to 50 )
PF = Cosθ for WH ; PF = Sinθ for VarH
Voltage 60V ; Current
-1
*** 0.2° ± SIN (0.02 x PF)

11.2.2 Fault Current Detection Function

11.2.2.1 Fault-Based-Curve
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Chapter 11 - Universal Intelligent AC Power Meter Unit
Table 11-1: VR-2760 Programmable measurements/accuracy/display readouts
Display (maximum)
0.5
20% of rating
One user programmable Fault-Based-Curve can be stored in the
ACUP Card Model VR-2760. This can be used for time over-current
detection in the same as IEC, ANSI curves. The custom Fault-Based-
Curve has set-points for entering times to fault at the following
current levels (I/Ipu): 1.00 to 1.20 in steps of 0.05 and 1.20 to 6.00 in
steps of 0.4, and 6.0 to 16.0 in steps of 2.0. The ACUP then converts
these points to a continuous curve by linear interpolation between
data points.
(I/Ipu) Fault
Time
1 . 00 0-65535
1 . 05 0-65535
1 . 10 0-65535
1 . 15 0-65535
1 . 20 0-65535
1 . 60 0-65535
2 . 00 0-65535
2 . 40 0-65535
Accuracy
option=N option=A
0.15% fs 0.25% fs
0.15% fs 0.25% fs
0.25% fs 0.25% fs
0.25% fs 0.25% fs Var1
0.25% fs 0.5% fs
0.25% fs 0.25% fs PF1
* 0.25% rd/
** 0.5% rd
PF
* 0.25% rd/
** 0.5% rd
PF
0.5% fs 0.25% fs
None 1% fs
0.03% rd 0.03% rd
*** ***
** Accuracy performance range for WH/VarH, PF
(-10 to 50 )
PF = Cosθ for WH ; PF = Sinθ for VarH
Voltage 60V ; Current
(I/Ipu) Fault
Time
2 . 80 0-65535 6 . 00
3 . 20 0-65535 8 . 00
3 . 60 0-65535 10.00
4 . 00 0-65535 12 . 0
4 . 40 0-65535 14 . 0
4 . 80 0-65535 16 . 0
5 . 20 0-65535
5 . 60 0-65535
Phase Phase Phase
Total Average
1 2 3
V1 V2 V3
A1 A2 A3
W1 W2 W3 W
Var2 Var3 Var
VA1 VA2 VA3 VA
PF2 PF3 PF
WH
VarH
DG1 DG2 DG3 DG
10% of rating
(I/Ipu) Fault
Time
0-65535
0-65535
0-65535
0-65535
0-65535
0-65535
Page 63 of 90
V
E
A
E
E
0.5