Toshiba GRZ100 B Series, Instruction Manual

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⎯
59
⎯
6 F 2 S 0 8 4 6
≥
1
&
&
R1-CH1
"Single"
"And"
R1-CR
[CHSEL]
"Guard"
R1-CH2
R1-CF
&
&
"CH1"
"CH2"
[CH-DEF]
"(PUP+DEF)"
-
≥
1
R1-CR-DEF
[SCHEME]
+
-
+
"(POP+DEF)", "(UOP+DEF)", "(BOP+DEF)"
&
&
20ms 150ms
0 t
100ms
t 0
&
t 0
"Guard"
Figure 2.4.3.11 Signal Receive Logic
Selecting "And" for the scheme switch [CHSEL] in two signals reception will allow ANDing of
two signals to be set as signal R1-CR.
When directional earth fault command protection (see Section 2.4.4.1) is used with POP, UOP or
BOP scheme of distance protection and two channels are available, signal channel can be
separated from distance protection by setting the scheme switch [CHSEL] to "Single" and
[CH-DEF] to “CH2”. In this case, signals CH1 and CH2 are used for distance protection and
directional earth protection respectively. If the scheme switch [CH-DEF] is set to “CH1”, signal
CH1 is shared by the both protections.
When directional earth fault command protection is used with PUP scheme, signal channel is
separated irrespective of [CH-DEF] setting.
In three-terminal application, the signal receive logic for remote 2 is same as that of remote 1
shown in Figure 2.4.3.11.
Following table shows the scheme switch settings and usable signals:
Use of signal
Scheme CHSEL setting CH-DEF setting
CH1 CH2
PUP+DEF Single CH1 PUP DEF
CH2 PUP DEF
POP+DEF Single CH1 POP and DEF (*) --
CH2 POP DEF
UOP+DEF Single CH1 UOP and DEF (*) --
CH2 UOP DEF
BOP+DEF Single CH1 BOP and DEF (*) --
CH2 BOP DEF
(*) CH1 is shared by the distance and directional earth fault command protections.
Setting
Element Range Step Default Remarks
CHSEL Single/Guard/And Single Signal receiving
CH-DEF CH1/CH2 CH1 Channel separation