GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual page 104

5.6 S4 ELEMENTS
5
5-54
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time
Transformer thermal
damage curve
Pickup setting based
rated load capability
Pickup shifted based
on harmonic derating
Figure 5–14: HARMONIC DERATING CORRECTION
Figure 5–15: PHASE TOC SCHEME LOGIC
745 Transformer Management Relay
Selected relay time
overcurrent curve
Transformer thermal
protection margin
current
5 SETPOINTS
GE Multilin