GE G30 - Page 330

5-190 G30 Generator Protection System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
(EQ 5.47)
Figure 5–78: SPLIT PHASE PROTECTION OPERATING CHARACTERISTICS
• SPLIT PHASE FUNCTION: This setting enables and disables the function.
• SPLIT PHASE SOURCE: This setting specifies a signal source used to provide current from the split phase CT to the
split phase protection.
• SPLIT PHASE LOAD SOURCE: This setting specifies a signal source used to provide current from the load CT to the
split phase protection.
• SPLIT PHASE A(C) PICKUP: This setting specifies a pickup level for each phase. This should be set less than the
minimum expected unbalance (split phase) current due to an inter-turn fault.
I
split
I
bias
– pickup>() and I
load
min_load≥()
830729A1.CDR
Iload (pu)
I splt phs (pu)
Offset
S
l
o
p
e
O
p
e
r
a
t
e
O
p
e
r
a
t
e
Min Load
Operating Characteristic
Iload (pu)
I splt phs (pu)
Offset
S
l
o
p
e
O
p
e
r
a
t
e
Min Load
Operating Characteristic (mode = over)
Iload (pu)
I splt phs (pu)
O
perate
Operating Characteristic (mode = over, Min Load = 0, Slope = 0)