Toshiba GR200 Series Instruction Manual page 212

Line differential protection ied
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terminals when any of the following conditions are satisfied:
1.
The forward overreaching element operates; and CRL has not observed the current
reversal.
2.
When On is set for scheme switch [Dis-ECHO], CB is opened; and a trip permission
signal (DISCAR-CS-*) is received from the other terminal.
3.
When On is set for scheme switch [Dis-ECHO], the forward overreaching element
(ZCSF/ZCGF) and the reverse looking element (ZCSR/ZCGR) have not operated; and
a trip permission signal is received from the other terminal.
From ZG in local Terminal
ZCGF-AX
ZCGF-BX
ZCGF-CX
From ZS in local Terminal
ZCSF-ABX
-CX
ZCSF-BCX
-CX
ZCSF-CAX
-CX
From ZG in local Terminal
ZCGR-AX
-CX
ZCGR-BX
Current
-CX
reversal
logic
ZCGR-CX
(CRL)
-CX
ZCSF-X
-CX
ZCSR-X
-CX
Receipt of trip permission signals
From Terminal 1
=1
Integral DISCAR-R1-A
Integral DISCAR-R1-B
=1
Integral DISCAR-R1-C
=1
Integral DISCAR-R1-S
=1
≥1
External DISCAR-R1
=1
From Terminal 2
Integral DISCAR-R2-A
=1
Integral DISCAR-R2-B
=1
Integral DISCAR-R2-C
=1
Integral DISCAR-R2-S
=1
≥1
External DISCAR-R2
=1
UOP
Dis-CAR
POP
From CARRIER-COMMON
CH1-USE
1
CH2-USE
1
8000001BB0
CAR_BLOCK
≥1
800000EBB0 DISCAR_BLK
800000EBBF DISCAR_3PTP
800000EBBF DISCAR_ARCBLOCK
Figure 2.12-3 POP and UOP scheme logic
Week infeed trip logic (WKIT)
&
1
≥1
&
1
≥1
&
1
≥1
≥1
&
&
&
1
≥1
&
≥1
&
≥1
&
&
≥1
≥1
≥1
≥1
≥1
1
- 189 -
8000001B68
&
≥1
8100001B69
≥1
≥1
≥1
&
8200001B6A
≥1
≥1
≥1
≥1
≥1
&
≥1
&
&
&
≥1
DISCAR_TPMD
&
3P
≥1
&
≥1
&
DISCAR-ARCBlk
Block
6F2S1914 (0.49)
To carrier
send circuit
DISCAR-CS-AB_POUP
DISCAR-CS-BC_POUP
DISCAR-CS-CA_POUP
DISCAR-CS-A_POUP
DISCAR-CS-B_POUP
DISCAR-CS-C_POUP
DISCAR-CS-S_POUP
8000001B73
DISCAR-OPT-A
8100001B74
DISCAR-OPT-B
8200001B75
DISCAR-OPT-C
8300001B76
DISCAR-OPT-S
8000001B20
≥1
DISCAR-TRIP-A
8100001B21
≥1
DISCAR-TRIP-B
8200001B22
DISCAR-TRIP-C
≥1
&
8100001B77
&
DISCAR-ARC-BLOCK
To TRC
GRL200 (Soft 033 & 037)

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