6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 184 -
(i)
Blocking EF by ICD
The operation of each EF element can be blocked if the ICD function detects a second harmonic
current caused by the magnetizing inrush current phenomenon when a transformer is
energized. For example, for the EF1 element, the scheme switch [
EF1-2fBlk
] is provided, and
Block
should be set when the user wishes to block the EF1 element when the second harmonic
associated with magnetizing inrush is present.
Non
is set for the scheme switch [
EF1-2fBlk
] as
the default setting. For more information about the ICD function, see Chapter
Relay
application: Inrush current detection function
.
(ii)
Blocking EF by VTF
The operation of the EF element can be blocked by the voltage transformer failure (VTF)
function via a scheme switch. For example,
Block
is set for the scheme switch [
EF1-VTFBlk
] to
block the operation of the EF1 element during a VTF condition.
Non
is set for the scheme
switch [
EF1-VTFBlk
] as a default.
(iii)
Blocking EF by CTF
The operation of the EF element can be blocked by the current transformer failure (CTF)
function via a scheme switch. For example,
Block
is set for the scheme switch [
EF1-CTFBlk
] to
block the operation of the EF1 element during a CTF condition.
Non
is set for the scheme
switch [
EF1-CTFBlk
] as a default.
(iv)
EF operation for autoreclose
The EF element activates the auto-reclose (ARC) function. However, if ARC is not required,
Block
is set for the scheme switch [
EF1-ARCBlk
].
Block
is set for the scheme switch [
EF1-
ARCBlk
] as a default.
(v)
Signal of EF trip
When a user requires an alarm signal in place of the trip signal; for example, set
Alarm
for the
scheme switch [
EF1-UseFor
].
Trip
is set for the scheme switch [
EF1-UseFor
] for the normal
trip operation.
2.6.6
Scheme logic
The scheme logic for both the non-directional and the directional EF1 element is illustrated in
Figure 2.6-6; Figure 2.6-7 shows grouping commands for the trip circuit (TRC). The EF1 signal
is generated when the pickup current exceeds a threshold, and then trip signals are injected
into the TRC. (For more information, see Chapter
Relay application: Trip circuit function
)
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 ...
Страница 1563: ......