Measured Values Description Primary Secondary % Referenced to
(_:13501:301) Iph 3 phase currents of the meas-
uring point
kA A Parameter Capacitor
reference curr. or RLC
rated current depending
on the setting of parameter
Rated-current selec-
tion
You can find the parameter Capacitor reference curr. in the FB General of the Capacitor bank func-
tion group, and the parameter RLC rated current in the FB General of the Overcurr. -3ph RLC function.
Application and Setting Notes
Parameter: MP selection
•
Default setting (_:13501:81) MP selection = None
With the MP selection parameter, you can select a measuring point that is connected to the I 3ph RLC
interface in the Capacitor bank function group.
The selection list displays the measuring points that are connected to the I 3ph RLC interface of the Capacitor
bank function group:
[scmpselection_ocp_rlc, 1, en_US]
Figure 7-2 Example of Measuring-Point Selection
The MP selection parameter is set for all stages. The setting applies equally to all stages of the function.
In the default setting, a measuring point is not selected. You must select a measuring point. If you do not
select a measuring point, an inconsistency is indicated via the read-only parameter Consistency failure:
[scinconsistency_ocp_rlc, 1, en_US]
Figure 7-3 Function Inconsistency Indication
Parameter: Rated-current selection
•
Default setting (_:2311:101) Rated-current selection = prim. rated curr.of MP
With the parameter Rated-current selection, you define the reference value for percentage-measured
values and for thresholds set in percentages.
Parameter Value
Description
prim. rated curr.of MP
Select this setting if you want to use the rated current of the whole capac-
itor bank as the reference value.
7.2.2.3
Capacitor Bank Protection
7.2 Overcurrent Protection for Capacitor Banks
SIPROTEC 5, Overcurrent Protection, Manual 971
C53000-G5040-C017-8, Edition 07.2017
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