GE Industrial Solutions Entellisys System Test Kit - Manual (Page 41)

System Test Kit 42
1.7 Ground Fault Defeat
Performing single phase tests may unintentionally trigger a Ground Fault trip in circuit breakers
with Ground Fault protection enabled. This may not be desired when testing other protection
functions (e.g., short time, single phase test).
The Ground fault defeat screen allows the operator to “Defeat” or suspend Ground Fault
protection temporarily for external Secondary or Primary Injection—single phase testing
without Ground Fault trips.
Only circuit breakers with Ground Fault enabled are eligible for this. If GF is disabled, the Breaker
and selection box will be grayed out.
NOTE: The test kit connector must be attached to the desired Messenger/circuit breaker to
defeat Ground Fault.
Once the test connector is removed from the Messenger, the Ground Fault protection function
resumes as normal.
Figure 1-20 Ground fault defeat screen