131
6
F
2
S
0
8
5
0
In three-phase autoreclose, if the voltage and synchronism check does not operate within the
period of time set on the on-delay timer TRR, which is started at the same time as the dead time
counter TTPR1 is started, reclosing is not performed and three-phase autoreclose is reset to its
initial state. Therefore, for example, the TRR is set to the time setting of the TTPR1 plus 100ms.
The TEVLV determines the possibility of three-phase reclosing for an evolving fault.
When the TEVLV is set to the same setting as the TSPR, three-phase reclosing is performed for
all evolving faults. As the setting for the TEVLV is made shorter, the possibility of three-phase
reclosing for an evolving fault becomes smaller and that of three-phase final tripping becomes
larger.
For the two-breaker autoreclose, the following additional settings are required.
Element Range
Step Default
Remarks
VTs2
1 - 20000
1
2000
VT ratio for voltage and synchronism checkSYN2
TSPR2
0.1 – 10.0s
0.1s
0.1s
Dead time for single-phase autoreclode of follower
breaker
TTPR2
0.1 – 10.0s
0.1s
0.1s
Dead time for three-phase autoreclode of follower
breaker
TMPR2
0.1 – 10.0s
0.1s
0.1s
Dead time for multi-phase autoreclode of follower
breaker
TRDY2
5 – 300s
1s
60s
Reclaim time of follower breaker
SYN2
Synchronism
check
SY2
θ
5 – 75°
1°
30°
SY2UV
10 – 150V
1V
83V
SY2OV
10 – 150V
1V
51V
OVL2
10 – 150V
1V
51V
Live line check
UVL2
10 – 150V
1V
13V
Dead line check
TSYN2
0.01 – 10.00s
0.01s
1.00s
Synchronism check time
TLBD2
0.01 – 1.00s
0.01s
0.05s
Voltage check time
TDBL2
0.01 – 1.00s
0.01s
0.05s
Voltage check time
TW2
0.1 – 10.0s
0.1s
0.2s
Reclosing signal output time
[ARC-CB]
ONE/O1/O2/L1/L2
L1
Two breaker autoreclose mode
[ARC-CCB] TPAR/MPAR/OFF
MPAR Center breaker autoreclose mode
[VCHK] OFF/LB1/LB2/DB/SYN
LB1 Energizing
direction
Note :
[ARC-CB]
is set to "
ONE
" only when the relay is applied to one-breaker system. Trip and
reclose commands are output only for CB1(bus CB).
2.15.3 Autoreclose Output Signals
The autoreclose scheme logic has two output reclosing signals: ARC1 and ARC2. ARC1 is a
reclosing signal for single breaker autoreclose or a reclosing signal for the busbar breaker in a
two-breaker autoreclose scheme.
ARC2 is the reclosing signal for the center breaker of the two-breaker autoreclose scheme.
The assignment of these reclosing signals to the output relays can be configured, which is done
using the setting menu. For details, see Section 3.2.2. For the default setting, see Appendix D.
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Summary of Contents for GRL100-701B
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