CYG PRS-7367 - Application Scope; Settings

Protection Functions
192 PRS-7367
&
Timer
FLG Initiation
SEF_Str
SIG
SEF_Op
SIG
SIG SEF_Block
SIG SEF_BlkStr
SIG SEF_BlkOp
&
&
& SEF_Alm
SIG
SEF_AlmEna
SET
&
Figure 3.38-3 Wattmetric SEF Operation Logic
3.38.3 Application Scope
The sensitive earth fault protection in this relay includes direction element and wattmetric element,
it can be used to detect earth faults in networks with a high-impedance earthing, unearthed
networks or compensated networks (Peterson coil-earthed networks).
3.38.4 Settings
No
Name
Values(Range)
Unit
Step
Default
Description
1
SEF_Ena
0~1
-
1
0
The Stage i SEF Operation
Enable/Disable
2
SEF_AlmEna
0~1
-
1
0
The Stage i SEF Alarm
Enable/Disable:
=1: Alarm, =0: Trip
3
SEF_DirMod
0~1
-
1
0
The Stage i SEF direction:
=0: forward
=1:backward
4
SEF_PolRev
0~1
-
1
0
The Stage i SEF polarizing voltage
value:
=0: polarizing voltage,
=1: polarizing voltage become
negative
5
SEF_RefPwr
0.1~400
W
0.001
0.866
The Reference value of residual
power for Wattmetric IDMT curves
6
SEF_MinOpVol
0.02~160
V
0.01
1
The minimum operation voltage
7
SEF_MinOpCur
0.01~20
A
0.01
0.1
The minimum operation current
8
SEF_StrPwr
0.1~400
W
0.01
0.173
The operation power
9
SEF_StrVol
0.02~160
V
0.01
10
The operation voltage
10
SEF_StrCur
0.01~20In
A
0.01
0.1
The operation current
11
SEF_CurMul
0.1~10
-
0.1
1
The operation current multiple
value
12
SEF_RCA
0~360
°
1
0
The Characteristic angle
13
SEF_CorAng
0~10
°
1
5
Angle correction