Toshiba GR200 Series - Page 161

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 138 -
The Z1S element generates a trip signal for the trip function (TRC) immediately when
the instantaneous mode is selected using the scheme switch [Z1CNT_INSTOP]. Note that the
scheme switch [LES_EN] can be used to block the Z1S element. The scheme switches [Z1S-
PSBBLK] and [Z1G-PSBBLK] can be used to block CB tripping when a power swing occurs in
the system. The scheme switch [Z1S-MSDET] is also used to cancel the operation condition,
which we have discussed with regard to the selection of the operation of ZS effected by the
occurrences of multi-phase fault or earth-fault. (see section 2.10.3(ii)-3).
The ZS elements generate trip signals if On is set for all of the scheme switches termed
“EN” with zone names [Z*S-EN]. The user should set Off for scheme switch [Z*S-EN] to disable
for issuing the trip signals. Using PLC signal ‘Z*S_ARCBLOCK’, the Z*S elements can issue
‘ARC-BLOCK’ signals for the ARC function via the TRC function; we shall see it later in
Chapter Relay application: Autoreclose .
To TRC
To DISCAR
≥1
Z1S-OPT
Z1XS-OPT
Z2S-OPT
Z3S-OPT
Z4S-OPT
Z5S-OPT
Z1S-OPT-AB
Z1S-OPT-BC
Z1S-OPT-CA
ZS-OPT-ABR
ZS-OPT-BCR
ZS-OPT-CAR
≥1
ZS-OPT-TRIP
From Z1S to Z5S logics
Z1S-ARC-BLOCK
Z1XS-ARC-BLOCK
Z2S-ARC-BLOCK
Z3S-ARC-BLOCK
Z4S-ARC-BLOCK
Z5S-ARC-BLOCK
≥1
ZS-ARC-BLOCK
Z1XS-OPT-AB
Z1XS-OPT-BC
Z1XS-OPT-CA
Z2S-OPT-AB
Z2S-OPT-BC
Z2S-OPT-CA
Z3S-OPT-AB
Z3S-OPT-BC
Z3S-OPT-CA
Z4S-OPT-AB
Z4S-OPT-BC
Z4S-OPT-CA
Z5S-OPT-AB
Z5S-OPT-BC
Z5S-OPT-CA
≥1
≥1
8C00001B62
8D00001B63
8E00001B64
8500001B61
8300001B23
Figure 2.10-43 ZS grouping logic for TRC/Recording functions