Toshiba GRZ100 B Series, Инструкция по эксплуатации

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6 F 2 S 0 8 4 6
Depending on the setting of the scheme switch [Z1CNT] or [ARC-M] which selects reclosing
mode, single-phase tripping may be converted to a three-phase tripping command. This is not
shown in the figure.
In case of multi-phase fault, the phase fault measuring zone 1 element Z1S and the two phases of
the UVC operate together, the Z1G trip is blocked and the three-phase tripping command M-TRIP
is always output. The condition for the UVC two-phase operation is to inhibit the Z1S from
overreaching in the event of a single-phase earth fault.
The UVC element is applied to the zone 1 distance elements.
EFL is an earth fault detection element, and UVPWI is a phase undervoltage relay to provide
countermeasures for overreaching of a leading-phase distance element at positive phase weak
infeed condition. These elements are applied to all earth fault distance elements. (Refer to
Appendix A.) The UVPWI can be disabled by the scheme switch [UVPWIEN].
2.4.1.3 Setting
The following shows the necessary distance protection elements and their setting ranges.
Element Range Step Default Remarks
VT 1 - 20000 1 2000
CT 1 - 20000 1 400
Phase fault protection
ZS-C Mho - Quad Mho Characteristic selection
Z1S
0.01 - 50.00
Ω
0.01
Ω
1.60
Ω Z1 reach
(0.10 - 250.00
Ω
0.01
Ω
8.00
Ω
) (*1)
Z1S
θ
1
0° - 45° 1° 0° Gradient of reactance element
Z1S
θ
2
45° - 90° 1° 90°
Z2S
0.01 - 50.00
Ω
0.01
Ω
3.00
Ω Z2 reach
(0.10 - 250.00
Ω
0.01
Ω
15.00
Ω
)
ZFS
0.01 - 50.00
Ω
0.01
Ω
4.00
Ω ZF reach
(0.1 – 250.0
Ω
0.1
Ω
20.0
Ω
)
Z3S
0.01 - 50.00
Ω
0.01
Ω
6.00
Ω Z3 reach
(0.1 – 250.0
Ω
0.1
Ω
30.0
Ω
)
Z3S
θ
(*2)
45 - 90° 1° 85° Characteristic angle of mho element
ZBS
θ
(*3)
0 - 45° 1° 5° Angle of directional element
BFR1S
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω Forward right blinder reach for Z1S
(0.5 - 100.0
Ω
0.1
Ω
25.5
Ω
)
Required if [BLZONE]=IND
BFRXS
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω Forward right blinder reach for Z1XS
(0.5 - 100.0
Ω
0.1
Ω
25.5
Ω
)
Required if [BLZONE]=IND
BFR2S
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω
Forward right blinder reach for Z2S
(0.5 - 100.0
Ω
0.1
Ω
25.5
Ω
)
Required if [BLZONE]=IND
BFRFS
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω Forward right blinder reach for ZFS
(0.5 - 100.0
Ω
0.1
Ω
25.5
Ω
)
Required If [BLZONE]=IND
BFRS
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω Forward right blinder reach for Z3S or Common
(0.5 - 100.0
Ω
0.1
Ω
25.5
Ω
)
setting of BLZONE
BFLS
θ 90° - 135° 1° 120° Forward left blinder angle
ZR1S
0.01 - 50.00
Ω
0.01
Ω
2.00
Ω ZR1 reach
(0.1 – 250.0
Ω
0.1
Ω
10.0
Ω
)
ZR2S
0.01 - 50.00
Ω
0.01
Ω
4.00
Ω ZR2 reach
(0.1 – 250.0
Ω
0.1
Ω
20.0
Ω
)
Z4S
0.01 - 50.00
Ω
0.01
Ω
8.00
Ω Z4 reach