Figure 101: Star Connected Condenser Bushings; Figure 102: Theoretical Earth Fault In Condenser Bushing System - GE MiCOM P40 Agile Technical Manual

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 101: Star connected condenser bushings

Calculations for Condenser Bushing Systems
Consider a single-phase fault to ground on B-Phase:
V
c
E00820

Figure 102: Theoretical earth fault in condenser bushing system

200
E00819
V
a
N
V
b
I
C
Neutral Voltage
Displacement Relay
(NVD)
I
A
I
F
-jXc -jXc -jXc
P14D-TM-EN-8
P14D