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The DSEF3 and DSEF4 protection can be disabled by the scheme switches [DSE3EN] and
[DSE4EN] or PLC logic signals DSEF3 BLOCK and DSEF4 BLOCK. Residual element RP also
can be disabled by the scheme switch [RPEN].
The DSEF3 and DSEF4 can also be blocked by the ICD.
136, 1828
DSEF1F
152, 1844
DSEF1R
"FWD"
[DSE1-DIR]
"REV"
+
[DSE1-2F]
+
&
"BLK"
ICD
147, 1839
RPF ON
&
163, 1855
RPR ON
&
"ON"
[RPEN]
"OFF"
+
[DSE1EN]
+
"ON"
1
DSEF1 BLOCK
1556
Figure 2.1.43
137, 1829
DSEF2F
153, 1845
DSEF2R
"FWD"
[DSE2-DIR]
"REV"
+
[DSE2-2F]
+
&
"BLK"
ICD
RPF ON
RPR ON
[DSE2EN]
+
"ON"
1
DSEF2 BLOCK
1557
Figure 2.1.44
DSEF1I
≥1
&
+
&
649
≥1
650
≥1
Directional Sensitive Earth Fault Protection SEF1
DSEF2I
≥1
&
+
&
Directional Sensitive Earth Fault Protection SEF2
⎯
88, 1780
&
[MDSE1]
"IEC"
"IEEE"
"US"
"CON"
TDSE1
"DT"
t
&
0.00 - 300.00s
[SE1S2]
+
"ON"
89, 1781
&
[MDSE2]
"IEC"
"IEEE"
"US"
"CON"
TDSE2
"DT"
t
&
0.00 - 300.00s
⎯
50
6 F 2 S 0 8 4 2
430
≥1
DSEF1 TRIP
0
TDSE1S2
431
0
t
DSEF1-S2
&
TRIP
0.00 - 300.00s
432
≥1
DSEF2 TRIP
0
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