Toshiba GRZ100 B Series, Instruction Manual

Page: 53 / 447

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52
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6 F 2 S 0 8 4 6
UVC. The phase selection logic is described in Section 2.4.3.7.
&
&
≥
1
CS
Z4
20ms
t 0
0.00 – 10.00s
0 t
M-TRIP
S-TRIP Phase
Selection
&
Z2
Z3
TCHD
0 - 50ms
t 0
"Z2"
"Z3"
[ZONESEL]
[PSB-CR]
" ON "
PSB
NON VTF
&
R1-CR 1
TREBK
TSBCT
0.00 – 1.00s
0 t
Figure 2.4.3.4 BOP Scheme Logic
Setting
The following shows the setting elements necessary for the BOP and their setting ranges.
For the settings of Z2, Z3 and UVC, refer to Section 2.4.1.
Element Range Step Default Remarks
Z4S
0.01 - 50.00
Ω
0.01
Ω
8.00
Ω Z4 reach
(0.1 – 250.0
Ω
0.1
Ω
40.0
Ω
) (*)
BRRS
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω Reverse right blinder reach
(0.5 - 100.0
Ω
0.1
Ω
25.5
Ω
)
Z4G
0.01 - 100.00
Ω
0.01
Ω
8.00
Ω
Z4 reach
(0.1 – 500.0
Ω
0.1
Ω
40.0
Ω
)
BRRG
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω Reverse right blinder reach
(0.5 - 100.0
Ω
0.1
Ω
25.5
Ω
)
TCHD 0 - 50 ms 1 ms 12 ms Channel delay time
TREBK 0.00 - 10.00s 0.01s 0.10s Current reversal block time
TSBCT 0.00 – 1.00s 0.01s 0.10s
PROTECTION
SCHEME 3ZONE/Z1EXT/PUP/POP/UOP/
BOP /POP+DEF/UOP+DEF/
BOP+DEF/PUP+DEF POP Scheme selection
ZONESEL Z2/Z3 Z2 Overreaching element selection
PSB - CR OFF/ON ON Power swing blocking
(*) Ohmic values shown in the parentheses are in the case of 1 A rating. Other ohmic values are in the
case of 5 A rating.
The following elements have fixed setting values or their settings are interlinked with other
elements listed above. So no setting operation is required.
Element Setting Remarks
Z4BS
Fixed to 1.5
Ω Z4 reverse offset reach
(Fixed to 7.5
Ω
) (*1)
Z4S
θ
(*2) Interlinked with Z3S
θ
Characteristic angle of Z4 mho element
Z4BS
θ
(*3) Interlinked with ZBS
θ
Angle of Z4 directional element
BRRS
θ Fixed to 75° Angle of reverse right blinder BRRS
BRLS Interlinked with BRRS Reverse left blinder
BRLS
θ
Interlinked with BFLS
θ
Angle of reverse left blinder BRLS
Z4G
θ
(*2) Interlinked with Z3G
θ
Characteristic angle of Z4 mho element