GE t60 Instruction Manual page 286

5.6 GROUPED ELEMENTS
The relay produces three FlexLogic™ operands that may be used for testing or for special applications such as building
custom logic (1-out-of-3) or supervising some protection functions (ground time overcurrent, for example) from the 2nd har-
monic inhibit.
SETTING
PERCENT DIFFERENTIAL
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
PERCENT DIFF BLOCK:
Off = 0
ACTUAL VALUES
DIFF PHASOR
Iad
Ibd
Icd
ACTUAL VALUES
REST PHASOR
Iar
Ibr
Icr
SETTING
5
INRUSH INHIBIT
FUNCTION:
Disabled = 0
Adapt. 2nd
= 1
Trad. 2nd
ACTUAL VALUES
DIFF 2ND HARM
Iad2
Ibd2
Icd2
SETTING
OVEREXC ITN INHIBIT
FUNCTION:
Disabled = 0
5th = 1
ACTUAL VALUES
DIFF 5TH HARM
Iad5
Ibd5
Icd5
5-154
SETTINGS
PERCENT DIFFERENTIAL
PICKUP:
PERCENT DIFFERENTIAL
SLOPE 1:
PERCENT DIFFERENTIAL
BREAK 1:
PERCENT DIFFERENTIAL
SLOPE 2:
PERCENT DIFFERENTIAL
BREAK 2:
AND RUN
Iad
Iar
AND RUN
Ibd
Ibr
AND RUN
Icd
Icr
SETTING
INRUSH INHIBIT LEVEL:
INRUSH INHIBIT MODE:
RUN
>
Iad2 LEVEL
RUN
>
Ibd2 LEVEL
RUN
>
Icd2 LEVEL
SETTING
OVEREXC ITN INHIBIT
LEVEL:
RUN
>
Iad5 LEVEL
RUN
>
Ibd5 LEVEL
RUN
>
Icd5 LEVEL
Figure 5–81: PERCENT DIFFERENTIAL SCHEME LOGIC
T60 Transformer Protection System
5 SETTINGS
FLEXLOGIC OPERANDS
XFMR PCNT DIFF PKP A
XFMR PCNT DIFF PKP B
XFMR PCNT DIFF PKP C
FLEXLOGIC OPERANDS
XFMR PCNT DIFF OP A
XFMR PCNT DIFF OP B
XFMR PCNT DIFF OP C
AND
FLEXLOGIC OPERAND
AND OR XFMR PCNT DIFF OP
AND
FLEXLOGIC OPERANDS
XFMR PCNT DIFF 2ND A
XFMR PCNT DIFF 2ND B
XFMR PCNT DIFF 2ND C
FLEXLOGIC OPERANDS
XFMR PCNT DIFF 5TH A
XFMR PCNT DIFF 5TH B
XFMR PCNT DIFF 5TH C
828001A6.CDR
GE Multilin