[dw4tlkbnk-120314-01, 1, en_US]
Figure 7-15 Quarters of the Capacitor Bank
•
Capacitance in the quarter of C1 in case of an element fault (C1
1EF
):
Capacitance in the row without element fault:
C1
RoEF
= 1.5130 μF
•
Capacitance in the row with element fault:
C1
RmEF
= 1.5118 μF
C1
1EF
= C1
RoEF
+ C1
RmEF
= 1.5130 μF + 1.5118 μF = 3.0248 μF
•
Capacitance in the quarter of C3 in case of an element fault (C3
1EF
):
Capacitance in the row without element fault:
C3
RoEF
= 1.3113 μF
•
Capacitance in the row with element fault:
C3
RmEF
= 1.3104 μF
C3
1EF
= C3
RoEF
+ C3
RmEF
= 1.3113 μF + 1.3104 μF = 2.6217 μF
3c) Capacitance in the Quarters of the H Connection without Element Fault
The values are identical to those values in the example 2g) Capacitance in the Quarters of the H Connection
without Element Fault, Page 989.
3d) Unbalanced Current and Threshold-Value Setting in Case of a C-Element Fault
Use the values determined under 3b) for those formula listed in example 2h) Unbalanced Current and
Threshold-Value Setting in Case of a C-Element Fault, Page 989.
Capacitor Bank Protection
7.4 Current-Unbalance Protection for Capacitors, 3-Phase
SIPROTEC 5, Overcurrent Protection, Manual 991
C53000-G5040-C017-8, Edition 07.2017
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