GE 745 Instruction Manual page 198

Transformer protection system
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S5 OUTPUTS
5.7.5
Output Relays
OUTPUT RELAY 1 [
5–102
OUTPUT 2 FLEXLOGIC
O1: Percent Diff OP
OUTPUT 2 FLEXLOGIC
O2: Inst Diff OP
OUTPUT 2 FLEXLOGIC
O3: Virtual Output 1
OUTPUT 2 FLEXLOGIC
O4: Logic Input 1
OUTPUT 2 FLEXLOGIC
O5: XOR (2 inputs)
OUTPUT 2 FLEXLOGIC
O6: Logic Input 2
OUTPUT 2 FLEXLOGIC
O7: NOT
OUTPUT 2 FLEXLOGIC
O8: Output Relay 2
OUTPUT 2 FLEXLOGIC
O9: AND (2 inputs)
OUTPUT 2 FLEXLOGIC
1O: OR (4 inputs)
OUTPUT 2 FLEXLOGIC
11: END
OUTPUT 2 FLEXLOGIC
20: END
FIGURE 5–48: FlexLogic™ example implemented
Any equation entered in the 745 that does not make logical sense according to the
notation described here, will be flagged as a self-test error. The
message will be displayed until the error is corrected.
Eqn
PATH: SETPOINTS
S5 OUTPUTS

]
OUTPUT 1 NAME:
Solid State Trip
OUTPUT 1 OPERATION:
MESSAGE
Self-Resetting
OUTPUT 1 TYPE:
MESSAGE
Trip
OUTPUT 1 FLEXLOGIC
MESSAGE
01: Percent Diff Op
OUTPUT 1 FLEXLOGIC
MESSAGE
20: END
This section contains the settings (including the FlexLogic™ equation) to configure output
relays 1 to 8.
OUTPUT 1(8) NAME: Press ENTER edit the name of the output. The text may be
changed from "Solid State Trip" one character at a time, using the VALUE keys. Press
ENTER to store the edit and advance to the next character position.
OUTPUT 1(8) OPERATION: Select "Latched" to maintain the output 1(8) contacts in the
energized state, even after the condition that caused the contacts to operate is
cleared, until a reset command is issued (or automatically after one week). Select
"Self-reset" to automatically de-energize the contacts after the condition is cleared.
The solid state output (output 1) remains closed until externally reset by a momentary
Output Relay 2
OPERATE
OUTPUT RELAYS
OUTPUT RELAY 1(8)
Range:
Range:
Range:
Range:
Range:
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
SELF TEST ERROR: FlexLogic
18 alphanumeric characters
Self-Resetting, Latched
Trip, Alarm, Control
any FlexLogic™ input or gate
any FlexLogic™ input or gate

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