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106, 1798
SEF3
OP. BLOCK
[SEF3-2F]
+
"BLK"
ICD
[SE3EN]
+
"ON"
SEF3 BLOCK
1554
2.1.21 SEF3 Sensitive Definite Time Earth Fault Protection Scheme Logic
107, 1799
SEF4
OP. BLOCK
[SEF4-2F]
+
"BLK"
ICD
[SE4EN]
+
"ON"
SEF3 BLOCK
1555
2.1.22 SEF4 Sensitive Definite Time Earth Fault Protection Scheme Logic
Setting
The table below shows the setting elements necessary for the sensitive earth fault protection and
their setting ranges.
Element
Range
SE1
0.025 – 0.125 A
(0.005 – 0.025 A)(*1)
TSE1P
0.010 – 1.500
(TMS)
TSE1D
0.00 – 300.00 s
TSE1RD
0.0 – 300.0 s
TSE1RP
0.010 – 1.500
(RTMS)
TSE1S2
0.00 – 300.00 s
SE2
0.025 – 0.125 A
(0.005 – 0.025 A)(*1)
TSE2P
0.010 – 1.500
(TMS)
TSE2D
0.00 – 300.00 s
TSE2RD
0.0 – 300.0 s
TSE2RP
0.010 – 1.500
&
&
1
&
&
1
Step
0.001 A
(0.001 A)
0.001
0.01 s
0.1 s
0.001
0.01 s
0.001 A
(0.001 A)
0.001
0.01 s
0.1 s
0.001
⎯
⎯
30
TSE3
0
428
t
0.00 - 300.00s
TSE4
0
429
t
0.00 - 300.00s
Default
Remarks
0.050 A
SEF1-I and SEF1-D threshold setting
(0.010 A)
1.000
SEF1-I inverse time multiplier setting.
Required if [MSE1] = IEC, IEEE, US or
CON.
1.00 s
SEF1-D definite time setting. Required if
[MSE1] = DT.
0.0 s
SEF1-I definite time delayed reset. Required
if [MSE1] = IEC or [SE1R] = DEF.
1.000
SEF1-I dependent time delayed reset time
multiplier. Required if [SE1R] = DEP.
1.00 s
SEF1 stage 2 definite time setting
0.050 A
SEF2 threshold setting
(0.010 A)
1.000
SEF2-I inverse time multiplier setting.
Required if [MSE2] = IEC, IEEE, US or
CON.
1.00 s
SEF2-D definite time setting. Required if
[MSE2] = DT.
0.0 s
SEF2-I definite time delayed reset. Required
if [MSE2] = IEC or [SE2R] = DEF.
1.000
SEF2-I dependent time delayed reset time
6 F 2 S 0 8 4 2
SEF3 TRIP
SEF4 TRIP
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