
29
6
F
2
S
0
8
3
4
is established when the binary input signal (PLC signal) CRT_BLOCK is "0" and the scheme
switch [CRSCM] is set to "ON" as shown in Figure 2.4.1.6.
CRT USE
+
"ON"
[CRSCM]
SCF BLOCK
&
1
CRT_BLOCK
1601
9
1
SCF BLOCK: Severe communication
failure block
Figure 2.4.1.6 Communication Service Logic
The service condition of the external main protection in duplicated scheme is input with the binary
input signal (PLC signal) M-PTOT_ON. The command protection in Table 2.4.1.1 is out of
service when both main protections are out of service.
Table 2.4.1.1 Zone 1 Trip Mode Control
Z1CNT COMMAND
PROTECTION
Position
IN SERVICE
OUT OF SERVICE
1
INST. TRIP & AUTO-REC
INST. FINAL TRIP
2
DELAYED FINAL TRIP
INST. FINAL TRIP
3
TRIP BLOCKED
INST. FINAL TRIP
4
INST. TRIP & AUTO-REC
5
INST. FINAL TRIP
The zone 1 tripping mode at each position of the switch [Z1CNT] is as follows:
Position 1: When the command protection is in service, zone 1 executes instantaneous tripping
and starts autoreclose. Zone 1 performs single-phase tripping and reclosing or three-phase tripping
and reclosing depending on the reclose mode of the autoreclose function and the type of faults
(single-phase faults or multi-phase faults). If the autoreclose is out of service, zone 1 performs
instantaneous three-phase final tripping for all faults.
If the command protection is out of service, zone 1 performs instantaneous three-phase final
tripping.
Position 2: Zone 1 performs three-phase tripping with a time delay using timer TZ1 if the
command protection is in service, and it performs three-phase tripping instantaneously if the
command protection is out of service and does not start the autoreclose.
Position 3: Zone 1 tripping is blocked if the command protection is in service, and instantaneous
three-phase tripping is performed if it is out of service. Autoreclose is not started.
Position 4: Zone 1 executes instantaneous tripping irrespective of the command protection
conditions and initiates autoreclose. This instantaneous tripping becomes single-phase tripping or
three-phase tripping depending on the autoreclose mode and type of faults (single-phase faults or
multi-phase faults). If the autoreclose is out of service, zone 1 performs instantaneous three-phase
final tripping.
Position 5: Zone 1 performs instantaneous three-phase final tripping irrespective of the command
protection.
Zone 1 Trip Mode Control is performed using PLC function as shown in Figure 2.4.1.7. By
changing the PLC default setting, the Z1 trip can be controlled independently of the [Z1CNT]
setting.
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Содержание GRZ100-211B
Страница 284: ... 283 6 F 2 S 0 8 3 4 Appendix A Block Diagram w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 288: ... 287 6 F 2 S 0 8 3 4 Appendix B Signal List w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 324: ... 323 6 F 2 S 0 8 3 4 Appendix C Variable Timer List w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 352: ... 351 6 F 2 S 0 8 3 4 Appendix G External Connections w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 390: ... 389 6 F 2 S 0 8 3 4 Appendix J Return Repair Form w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 396: ... 395 6 F 2 S 0 8 3 4 Appendix K Technical Data w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 408: ... 407 6 F 2 S 0 8 3 4 Appendix L Symbols Used in Scheme Logic w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 412: ... 411 6 F 2 S 0 8 3 4 Appendix M Example of Setting Calculation w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 440: ... 439 6 F 2 S 0 8 3 4 Appendix P Data Transmission Format w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 448: ... 447 6 F 2 S 0 8 3 4 Appendix R Inverse Time Characteristics w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 460: ... 459 6 F 2 S 0 8 3 4 Appendix T Ordering w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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