Toshiba GRT100 Series Instruction Manual page 143

HOC
DIFT
(#87)  1
DIF
1
2f lock
&
5f lock 1
1OC
t 0
1OC (#150)
0.00-10.00s
1OCI
1OCI(#151)
2OC
2OC (#250) t 0
0.00-10.00s
2OCI
2OCI(#251)
3OC
t 0
3OC (#350)
0.00-10.00s
3OCI
3OCI(#351)
1REF
1REF(#187N)
1EF
1EF (#150N) t 0
0.00-10.00s
1EFI
1EFI(#151N)
2REF
2REF(#287N)
2EF
2EF (#250N) t 0
0.00-10.00s
2EFI
2EFI(#251N)
3REF
3REF(#387N)
3EF
t 0
3EF (#350N)
0.00-10.00s 3EFI
3EFI(#351N)
V/F
L
V/F
 1
(#59/81)
H t 0
0.00-10.00s
THR
L
THR
 1
(#49)
H
FRQ
t 0
L
FRQ
0.00-10.00s
 1
(#81)
H
t 0
0.00-10.00s
MT-1
Mechanical Trip 1
MT-2
Mechanical Trip 2
MT-3
Mechanical Trip 3
MT-4
Mechanical Trip 4
: Binary input/output
: Relay Element
DIFT
&
Selection
switches for
each element
(ON)
1
+
 (OFF)
& RESET
+ (ON)
L/O
- (OFF)
 1
Scheme Logic No.2
DIFT
1OC
1OCI
2OC
2OCI
3OC
3OCI
1REF
1EF
1EFI
2REF
2EF
2EFI
3REF
3EF
3EFI
V/F
THR
FRQ
MT-1
MT-2
MT-3
MT-4
Block Diagram of Transformer Differential Relay GRT100
Block Diagram of Transformer Differential Relay GRT100
Scheme Logic No.1
S Q
 1
F/F
R
&
TRIP-1
TRIP-2
Scheme Logic No.3
TRIP-3
Same as DIFT
No.1
1OC
circuit
1OCI
2OC
Same as
2OCI
No.1
circuit
3OC
DIFT
3OCI
1OC
1REF
1OCI
1EF
2OC
1EFI
2OCI
2REF
3OC
2EF
3OCI
2EFI
1REF
3REF
1EF
3EF
1EFI
3EFI
2REF
V/F
2EF
THR
2EFI
FRQ
3REF
MT-1
3EF
MT-2
3EFI
MT-3
V/F
MT-4
THR
FRQ
MT-1
MT-2
MT-3
MT-4
 142 
6 F 2 S 0 7 8 9
TP1
TP2
TP3
TP4
TP5
Scheme Logic No.4
TRIP-4
Scheme Logic No.5
Same as
DIFT
No.1
circuit
1OC
1OCI
2OC
Same as
2OCI
No.1
circuit
3OC
3OCI
1REF
1EF
1EFI
2REF
2EF
2EFI
3REF
3EF
3EFI
V/F
THR
FRQ
MT-1
MT-2
MT-3
MT-4
TRIP OUTPUT
CONTACT No.1
TRIP OUTPUT
CONTACT No.2
TRIP OUTPUT
CONTACT No.3
TRIP OUTPUT
CONTACT No.4
TRIP OUTPUT
CONTACT No.5
TRIP-5