Sef1/Sef2 Sensitive Earth Fault Protection Scheme Logic For Models 820 And 821 - Toshiba GRE110 Instruction Manual

67
SEF1
[SE1-2F]
[SE1EN]
+ "Block"
+
&
ICD
SEF1 97
INST
[MSE1]
+
"IEC"
"IEEE"
"US"
"C"
"D"
ZPF
&
ZPR
&
"ON"
[ZPEN]
"OFF"
+
"FWD"
[SE1 DIR]
"REV"
"NON"
+
Figure 2.3.8 SEF1 Sensitive Earth Fault Protection Scheme Logic for models 820 and 821
68
SEF2
[SE2-2F]
[SE2EN]
+ "Block"
+
&
ICD
157
SEF2
INST
[MSE2]
+
"IEC"
"IEEE"
"US"
"C"
"D"
ZPF
&
ZPR
&
"ON"
[ZPEN]
"OFF"
+
"FWD"
[SE2DIR]
"REV"
"NON"
+
Figure 2.3.9 SEF2 Sensitive Earth Fault Protection Scheme Logic for models 820 and 821
≥1
"ON"
≥1
&
≥1
≥1
&
≥1
"ON"
≥1
&
≥1
≥1
&
&
&
[SE1S2]
+
"ON"
SEF1HS
&
&
 31 
6 F 2 T 0 1 7 2
TSE1
t 0
≥1
121
0.00 - 300.00s
&
TS1S2
122
0
t
SEF1-S2_
&
TRIP
0.00 - 300.00s
SEF1 HS
TSE2
t 0
≥1 123
0.00 - 300.00s
&
SEF1-S1
_TRIP
SEF2
_TRIP