Warning:
When operating in areas with r
estricted space, suitable protective barriers must be
used where there is a risk of electric shock due to exposed terminals.
Neutral Voltage
Displacement Relay
(NVD)
E00819
Figure 116: Star connected condenser bushings
Calculations for Condenser Bushing Syst
ems
Consider a single-phase fault to ground on B-Phase:
V
a
I
F
I
C
I
A
V
b
V
c
N
-jXc -jXc -jXc
E00820
Figure 117: Theoretical earth fault in condenser bushing system
Chapter 10 - Voltage Protection Functions P14x
222 P14xEd1-TM-EN-1
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