Chapter 10 - Voltage Protection Functions
Warning:
When operating in areas with restricted space, suitable protective barriers must be
used where there is a risk of electric shock due to exposed terminals.
Figure 116: Star connected condenser bushings
Calculations for Condenser Bushing Systems
Consider a single-phase fault to ground on B-Phase:
V
c
E00820
Figure 117: Theoretical earth fault in condenser bushing system
222
E00819
V
a
N
V
b
I
C
Neutral Voltage
Displacement Relay
(NVD)
I
A
I
F
-jXc
-jXc
-jXc
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