GE UR Series L90 Instruction Manual page 382

Line current differential system
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5.6 GROUPED ELEMENTS
87L TRIP SEAL-IN: This setting is used to enable/disable seal-in of the trip signal by measurement of the current flow-
ing.
87L TRIP SEAL-IN PICKUP: This setting is used to select a pickup setting of the current seal-in function.
5
5-244
Figure 5–130: 87L TRIP SCHEME LOGIC
L90 Line Current Differential System
5 SETTINGS
GE Multilin

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