GE UR Series L90 Instruction Manual page 565

Line current differential system
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9 THEORY OF OPERATION
9.2 OPERATING CONDITION CHARACTERISTICS
loc pu
20
OPERATE
16
RESTRAINT
BP=8, P=2, S1=30%, S2=50%
BP=4, P=1, S1=30%, S2=50%
10
BP=4, P=1, S1=20%, S2=40%
8
4
OPERATE
rem pu
0
4
8
12
16
20
0
831725A1.CDR
Figure 9–8: SETTINGS IMPACT ON RESTRAINT CHARACTERISTIC
9
GE Multilin
L90 Line Current Differential System
9-19

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