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in Figure 2.4-7; Figure 2.4-8 shows grouping commands for the trip circuit (TRC). The SEF1
signal is generated when the pickup current exceeds a threshold, and then trip signals are
injected into the TRC. (For more information, see Chapter 2.23)
From ICD
ICD-OR
&
SEF1-2PBlk
Block
For DT characteristic
8000011C23
SEF1
&
8000011C27
For IDMT characteristic
SEF1 PU
&
SEF1-EN
On
SEF1S1-EN
On
8000011C61
RP1R
8000011C60
RP1F
On
RP1-EN
Off
Reverse
Forward
From VTF
SEF1-DIR
Nondir
VTF_DETECT
&
SEF1-VTFBlk
Block
8000011B63
800001EBBO SEF1_BLOCK
8000011B64
800001EBB1 SEF1_INST_OP
DT
SEF1_Type
IEC-NI
IEC-VI
≥1
IEC-EI
UK-LTI
IEEE-MI
IEEE-VI
IEEE-EI
US-C02
US-C08
ORIGINAL
†Note: The presence of 'SEF1' and 'SEF1PU' signals depends on the operation
characteristic defined with setting [SEF1_Timer], as shown below.
Table 2.4-4 Signal behaviors of PLC monitoring points 'SEF1' and 'SEF1PU'
PLC monitoring points
SEF1
SEF1PU
:
A pick-up signal is generated instantly when the element operates.
○
1
:
No signal due that the PU element is killed. Use 'SEF1' in place of that.
○
2
:
A pick-up signal is generated, but delayed with the IDMT characteristic.
○
3
:
A pick-up signal is generated instantly.
○
4
&
&
&
≥1
&
≥1
&
≥1
&
1
≥1
Trip
SEF1-UseFor
Alarm
SEF1-ARCBlk
Block
Trip
SEF1S2-UseFor
Alarm
Figure 2.4-7 Scheme logic for the SEF1
DT
IEC-NT,VI,EI, UK-LTI, IEET-MI,VI,EI, US-CO2,CO8, ORIGINAL
○
1
○
2
TSEF1
t
0
&
≥1
0.00-300.00s
&
&
≥1
&
&
&
Setting [SEF1_Timer]
○
3
○
4
- 81 -
6F2T0207 (0.01)
8000011C23
8000011C27
8000011B60
8000011B23
&
8000011B61
8000011B62
&
TSEFS2
&
8000011B65
t
0
0.00-300.00s
8000011B66
&
8000011B67
&
GRE200 (5,6)
RPRRY ON
RPFRY ON
RP1R ON
RP1F ON
SEF1†
SEF1PU†
To Group logic
SEF1-OPT
SEF1-OPT-TRIP
SEF1-OPT-ALARM
SEF1-ARC-BLOCK
SEF1S2-OPT
SEF1S2-OPT-TRIP
SEF1S2-OPT-ALARM
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