GE UR T60 - Page 402

5-264 T60 Transformer Protection System GE Multilin
5.7 CONTROL ELEMENTS 5 SETTINGS
5
Figure 5–148: POTT SCHEME LOGIC
SETTING
FLEXLOGIC OPERANDS
SETTING
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
SETTING
POTT SCHEME
FUNCTION:
Enabled = 1
Enabled = 1
PH DIST Z2 PKP
GND DIR O/C FWD:
POTT RX:
LINE PICKUP LEO PKP
POTT TX
POTT OP
POTT PERMISSIVE ECHO:
Disabled = 0
Disabled = 0
837014A9.CDR
GND DIST Z2 PKP
Off = 0
Off = 0
SETTINGS
SETTINGS
SETTINGS
SETTINGS
SETTINGS
POTT RX PICKUP
DELAY:
TRANS BLOCK PICKUP
DELAY:
LINE END OPEN PICKUP
DELAY:
ECHO DURATION:
TRANS BLOCK RESET
DELAY:
POTT SEAL-IN
DELAY:
AND
AND
OR
OR
AND
AND
AND
AND
AND
OR
0
t
RST
0
t
RST
t
PKP
t
PKP
t
PKP
0
ECHO LOCKOUT:
Echo duration and lockout logic