The alarm response is based on the reactive power (Q) from the source, as measured and
calculated by the controller.
Set
point
Value
time
Delay
Configure the parameters under
Configure > Parameters > [Source] > Reactive power protections > Reactive power export #
,
where # is 1 or 2.
Table 3.50
Default parameters
Parameter
Range
Reactive power export 1
Reactive power export 2
Set point
0 to 100 % of nominal reactive power
60 %
75 %
Delay
0.00 s to 1 h
10.00 s
5.00 s
Enable
Not enabled, Enabled
Not enabled
Not enabled
Action
Warning
Warning
3.4.19 Reactive power import (ANSI 40U)
Protection
IEC symbol (IEC60617) ANSI (IEEE C37.2) IEC 61850 Operate time
Reactive power import (loss of excitation/under-
excitation)
Q<, Q<<
40U
PUEX
< 100 ms
The alarm response is based on the reactive power (Q) to the source, as measured and
calculated by the controller.
Set
point
Value
time
Delay
Configure the parameters under
Configure > Parameters > [Source] > Reactive power protections > Reactive power import #
,
where # is 1 or 2.
Table 3.51
Default parameters
Parameter
Range
Reactive power import 1
Reactive power import 2
Set point
0 to 150 % of nominal reactive power (Q)
50 %
70 %
Delay
0.00 s to 1 h
10.00 s
5.00 s
Enable
Not enabled, Enabled
Not enabled
Not enabled
Action
Warning
Warning
3.4.20 Generator differential current protection (ANSI 87G)
Protection
IEC symbol (IEC60617)
ANSI (IEEE C37.2)
IEC 61850
Operate time
Generator stabilised differential current
Id>
87G
PDIF
< 55 ms
Generator high set differential current
Id>>
87G
PDIF
< 55 ms
DESIGNER'S HANDBOOK 4189340911K UK
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