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GE MFAC 34

GE MFAC 34
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A1
Primary injection
test set
A
B
C
Temporary connections
A2
Stabilising resistor (if fitted)
Relay
Metrosil
Figure 3 Stability check of restricted earth fault protection.
A1
A
LV
B
supply
C
Temporary short
circuit
A2
Stabilising resistor (if fitted)
Relay
Figure 4 Stability check on restricted earth fault scheme by back energising with a low voltage supply.
16

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