6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 265 -
2.15.3
Miscellaneous functions
(i)
Blocking UV operation
Blocking the UV function may be required when a failure in the voltage transformer occurs.
In this case, the user shall set
Block
for scheme switch [
UV1-VTFBlk
].
Non
(as a default) is set
for scheme switch [
UV1-VTFBlk
] in order that the UV function is not blocked by the failure.
(ii)
UV trip signal
The UV1 element issues a trip signal for the trip circuit (TRC†) when
Trip
is set for scheme
switch [
UV1-UseFor
] as the normal tripping. However, when an alarm signal in place of the
trip signal is required, the user can set
Alarm
for the scheme switch [
UV1-UseFor
].
†Note: For more information about tripping, see Chapter
Relay application: Trip circuit.
(iii)
Operation of UV element
The user should set
On
for scheme switch [
UV1-EN
] for the operation of the UV1 element.
Otherwise, set
Off
for the scheme switch if the UV1 element is not required to operate.
(iv)
Under voltage test
Setting [
UV-Test
] =
On
is not to operate UV blocking element (UVBLK) for testing.
2.15.4
Scheme logic
Figure 2.15-4 show the logic of the UV function. PLC connection points “UV*_BLOCK” are
provided for blocking the operation of the UV elements. Other PLC connection points
“CB_*PH_OPEN” are provided so that the UV function can determine its operation using the
open/closed information of a circuit breaker (CB). For testing, the UV1-PU element is provided;
it generates a pick-up signal when the entering voltage is below the threshold anytime. For
example, in the IDMT characteristic, using both PLC monitoring points “8000011B20” and
“8000011B24” can facilitate to measure the pickup time after the deficiency.
Содержание GR 200 Series
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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 ...
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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 ...
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Страница 1520: ...6F2S1915 0 46 GRZ200 Soft 031 032 1499 Appendix 9 Matrix between VCT terminals and relay applications ...
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