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69
SEF3
[SE3-2F]
+
"Block"
&
ICD
[SE3EN]
+
"ON"
SEF3 BLOCK
1
70
SEF4
[SE4-2F]
+
"Block"
&
ICD
[SE4EN]
+
"ON"
SEF4 BLOCK
1
Setting
The table below shows the setting elements necessary for the sensitive earth fault protection and
their setting ranges.
Element
Range
SECT
1 - 20000
SE1
0.001 – 0.250 A
TSE1
0.010 – 1.500
0.00 – 300.00 s (*1)
TSE1R
0.0 – 300.0 s
TSE1RM
0.010 – 1.500
TS1S2
0.00 – 300.00 s (*1)
SE2
0.001 – 0.250 A
TSE2
0.010 – 1.500
0.00 – 300.00 s (*2)
TSE2R
0.0 – 300.0 s
TSE2RM
0.010 – 1.500
&
0.00 - 300.00s
&
Figure 2.3.4 Definite Time SEF Protection SEF3
&
0.00 - 300.00s
&
Figure 2.3.5 Definite Time SEF Scheme Logic
Step
1
0.001 A
0.001
0.01 s
0.1 s
0.001
0.01 s
0.001 A
0.001
0.01 s
0.1 s
0.001
26
TSE3
0
t
TSE4
t
0
Default
Remarks
150
CT ration for sensitive earth fault current
0.010 A
SEF1 threshold setting
1.000
SEF1 inverse time multiplier setting
1.00 s
SEF1 definite time setting. Required if
[MSE1] =DT.
0.0 s
SEF1 definite time delayed reset. Required if
[MSE1] =IEC or if [SE1R] = DEF.
1.000
SEF1 dependent time delayed reset time
multiplier. Required if [SE1R] = DEP.
0.00 s
SEF1 stage 2 definite time setting
0.020 A
SEF2 threshold setting
1.000
SEF2 inverse time multiplier setting
0.00 s
SEF2 definite time setting.
0.0 s
SEF2 definite time delayed reset. Required if
[MSE2] =IEC or if [SE2R] = DEF.
1.000
SEF2 dependent time delayed reset time
multiplier. Required if [SE2R] = DEP.
6 F 2 T 0 1 7 2
124
SEF3 TRIP
125
SEF4
ALARM
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