Phase-angle rota-
tion
0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330°
Vector group
numeral
0 1 2 3 4 5 6 7 8 9 10 11
In the function group, the following information is displayed additionally in the setting sheet:
•
Side number
•
Identification of the measuring points used
•
Adaptation factor for the 3-phase measuring point (with reference to the side)
Each Vector group numeral can be set from 0 to 11 to the extent possible. Thus, for example, only even
numbers are possible for the vector group Yy and Dd and only odd numbers are possible for Yd and Dy.
Parameter: Side number
•
Default setting (_:1781:14611:130) Side number = not assigned
The Side number parameter shows you which capacitor bank side is currently valid for the following param-
eters. The side number (Side 1 to Side 3) is automatically assigned with the connection to a capacitor bank
side.
Parameter: MI3ph1 usesMeasP with ID
•
Default setting (_:1781:14611:210) MI3ph1 usesMeasP with ID = 0
The MI3ph1 usesMeasP with ID parameter shows you which 3-phase measuring point is connected to
the capacitor bank side. Every measuring point is assigned a unique ID.
Parameter: MI3ph2 usesMeasP with ID
•
Default setting (_:1781:14611:211) MI3ph2 usesMeasP with ID = 0
The MI3ph2 usesMeasP with ID parameter shows you which 3-phase measuring point is connected to
the capacitor bank side. Every measuring point is assigned a unique ID.
Parameter: CT mismatch M I-3ph 1
•
Default setting (_:1781:14611:215) CT mismatch M I-3ph 1 = 0.000
The CT mismatch M I-3ph 1 parameter shows you the magnitude adaptation of the phase currents of the
1st assigned measuring point. The numerical value results from the ratio of the primary rated current of the
current transformer to the rated current of the side.
Parameter: CT mismatch M I-3ph 2
•
Default setting (_:1781:14611:217) CT mismatch M I-3ph 2 = 0.000
The CT mismatch M I-3ph 2 parameter shows you the magnitude adaptation of the phase currents of the
2nd assigned measuring point.
Write-Protected Settings
The settings listed here are used primarily for understanding during configuration of the function groups. They
are calculated on the basis of other settings and cannot be directly changed.
Addr.
Parameter C Range of Values Default Setting
Rated values
_:1781:15571:103 Rated apparent power 0.20 MVA to 5000.00 MVA 692.82 MVA
5.5.3.4
Function-Group Types
5.5 Function-Group Type Capacitor Bank Differential Protection
SIPROTEC 5, Overcurrent Protection, Manual 235
C53000-G5040-C017-8, Edition 07.2017
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