6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 49 -
In order for ZG not to operate against the multi-phase fault, it is possible for the user to
set
Block
for setting [
Z*G-MPFBlk
]†. If this operation condition shall not be added in ZG
operation, it is possible to set
Non
for the setting [
Z*G-MPFBlk
].
†Note: It is recommended to set [
Z*G-MPFBlk
]=
Block
for main protection elements, such
as Zone 1, which need to operate instantaneously. Since operating condition for
Z*G elements is restricted by setting
Block
, it is desirable to set
Non
for backup
protection elements, such as a forward looking element and a reverse looking
element, which can operate with a pick-up delay timer to cover remote end;
accordingly, protection measurement and operating condition could be less
restricted.
With regard to the leading-phase-block function, the leading phase ZG element could
operate in the event of a multi-phase fault.
The leading phase ZG element can be blocked by an operation of a ZG*COV element as
shown in scheme logics of the distance protection element described later. For example, when
an A-phase (or B-phase or C-phase) ZG1COV is picked up, an operation of C-phase (or A-phase
or B-phase) Z1G output can be blocked. (Note that the ZG*COV functions as a fault detection
as well as for fault phase detection as described for the multi-phase fault detection logic.) The
similar logics are prepared for other zones as well.
Thus, it is possible to set
Non
for scheme switch [
Z*G-LPBlk
] in order not to block the
operation of the leading phase of Z*G.
However,
Block
can be set for this scheme switch in order to block the operation of Z*G.
Содержание GR 200 Series
Страница 1047: ...6F2S1915 0 46 GRZ200 Soft 031 032 1026 Figure 8 3 4 Screen shot from GR TIEMS ...
Страница 1354: ...6F2S1915 0 46 GRZ200 Soft 031 032 1333 Appendix 1 Signal list for common function ...
Страница 1369: ...6F2S1915 0 46 GRZ200 Soft 031 032 1348 Unit mm Panel cut out for 1 2 case size Figure 2 2 3 Panel cutout figure 1 2 size case ...
Страница 1410: ...6F2S1915 0 46 GRZ200 Soft 031 032 1389 This page is intentionally blank ...
Страница 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Страница 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
Страница 1518: ...6F2S1915 0 46 GRZ200 Soft 031 032 1497 Appendix 8 Manufacture setting ...
Страница 1520: ...6F2S1915 0 46 GRZ200 Soft 031 032 1499 Appendix 9 Matrix between VCT terminals and relay applications ...
Страница 1523: ...6F2S1915 0 46 GRZ200 Soft 031 032 1502 Appendix 10 CT requirement ...
Страница 1531: ...6F2S1915 0 46 GRZ200 Soft 031 032 1510 Appendix 12 Engineering exercise ...
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