GE L90 Instruction Manual page 545

CHAPTER 5: SETTINGS
5.8.12.4 Permissive overreaching transfer trip (POTT)
SETTINGS  CONTROL ELEMENTS  PILOT SCHEMES  POTT SCHEME
 POTT SCHEME

L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
Figure 5-205: PUTT scheme logic
POTT SCHEME

FUNCTION: Disabled
POTT PERMISSIVE

ECHO: Disabled
POTT RX PICKUP

DELAY: 0.000 s
TRANS BLOCK PICKUP

DELAY: 0.020 s
TRANS BLOCK RESET

DELAY: 0.090 s
ECHO DURATION:

0.100 s
ECHO LOCKOUT:

0.250 s
LINE END OPEN PICKUP

DELAY: 0.050 s
POTT SEAL-IN

DELAY: 0.400 s
Range: Disabled, Enabled
Range: Disabled, Enabled
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
CONTROL ELEMENTS
5
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