CYG PRS-7367 - Application Scope; Settings

Protection Functions
58 PRS-7367
67G_Min_Op_T is the minimum operate time for IDMT curves.
3.5.3 67G Application Scope
The directional earth-fault protection is designed for protection and clearance of earth faults and
for earth-fault protection of different equipment connected to the power systems, such as shunt
capacitor banks or shunt reactors, and for backup earth-fault protection of power transformers.
3.5.4 67G Settings
In the following table, i is the protection stage number, it can be set according to the requirements.
Table 3.5-3 67G settings
No.
Name
Values(Range
)
Unit
Step
Default
Description
1
67Gi_Dir_Mod
0~2:
-
1
0
The Stage i Directional mode:0-2 for
"Non-directional", "Forward" or
"Reverse"
2
67Gi_Cur_Str
0.04-20.00In
A
0.01I
n
0.04In
The Stage i Current Start value
3
67Gi_ResVol_Blk
10 - 100
V
0.01
10
The Stage i Voltage start value
4
67Gi_RCA
0 - 360
°
1
45
The Stage i Characteristic angle
5
67Gi_Mult_Cur
0.8 - 10.0
-
0.1
1
The Stage i Multiplier current start value
6
67Gi_Curve_Type
0~5
-
1
0
0 Definite time
1 IEC Normal inverse
2 IEC Very inverse
3 IEC Extremely inverse
4 IEC Long-time inverse
5 Programmable user-defined
7
67Gi_Curve_ParaA
0.000~120.00
0
s
0.001
0
The Stage i Curve parameter A
8
67Gi_Curve_ParaB
0.000~9.000
s
0.001
0
The Stage i Curve parameter B
9
67Gi_Curve_ParaC
0.0~1.0
-
0.1
1.0
The Stage i Curve parameter C
10
67Gi_Curve_ParaP
0.02~2.00
-
0.01
2.00
The Stage i Curve parameter P
11
67Gi_Curve_ParaK
0.05-100
-
0.01
1.00
The Stage i Curve parameter k
12
67Gi_Min_Op_T
0.040-60.000
s
0.001
0.040
The Stage i minimum operation time
delay for IDMT
13
67Gi_Vol _Blk_Ena
0~1
-
1
0
The Stage i Voltage blocking element
Enable/Disable
14
67Gi_Ena
0-1
-
1
0
The Stage i Operation Enable/Disable
15
67Gi_Alm_Ena
0~1
-
1
0
The Stage i Alarm Enable/Disable
16
67Gi_Reset_T
0.000 -60.000
s
0.001
0.02
The Stage i Reset time delay
17
67Gi_3Io_Calc_Ena
0-1
-
1
0
The Stage i Zero sequence Self
Extraction Enable/Disable
18
67Gi_PTS_Blk
0-1
-
1
0
The Stage i Protection PTS Alm Block
enable/disable: