GE Industrial Solutions Entellisys System User Manual User Manual
Page 56
Single point functions
56
5
There are two options configured at each Messenger for Ground Fault. The combinations of
Ground Fault options are listed in Table 5-5 below.
The parameters for the GF protection provided by the Entellisys CPU can be set in the HMI as
shown in Figure 5-3.
Figure 5-3 Event generated for IOC trip
Table 5-5 Ground Fault options
GF Option at
Messenger
Switchable GF
Option at
Messenger
Settings at CPU
UL Listed as a
GF Device?
Notes
Enabled
Don’t Care
NA – CPU must
have GF trip
function
Yes
Messenger and CPU perform GF; CPU at
user setting, Messenger at max
Disabled
Enabled
Ground Fault Trip No
CPU performs GF at user setting. On
power up, Messenger does not perform
GF. CPU must tell Messenger to begin
performing GF (at max setting).
Disabled
Enabled
Ground Fault
Alarm Only
No
CPU performs GF alarm function at user
settings, Messenger does not perform GF
Disabled
Enabled
Ground Fault OFF No
No GF at Messenger or CPU
Disabled
Disabled
Ground Fault OFF No
No GF at Messenger or CPU