GE L90 Instruction Manual page 531
Ur series line current differential system
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Also See for L90:
- Instruction manual (900 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (470 pages)
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9 THEORY OF OPERATION
SETTING
FAULT REPORT
TRIG:
Off=0
SETTINGS
FAULT REPORT
SOURCE:
SRC 50DD OP
X
I
A
I
B
I
C
3I_0
VA or VAB
VB or VBC
VC or VCA
Vn or V_0
SHOT # FROM
AUTO RECLOSURE
Since the fault locator algorithm is based on the single-end measurement method, in three-terminal config-
uration the estimation of fault location may not be correct at all three terminals especially if fault occurs
behind the line's tap respective to the given relay.
NOTE
GE Multilin
SETTINGS
FAULT REPORT 1 Z1
MAG:
FAULT REPORT 1 Z1
ANGLE:
FAULT REPORT 1 Z0
MAG:
FAULT REPORT 1 Z0
ANGLE:
FAULT REPORT 1
LENGTH UNITS:
FAULT REPORT 1
LENGTH:
FAULT REPORT 1 VT
SUBSTITUTION:
FAULT REP 1
SYSTEM Z0 MAG:
FAULT REP 1
SYSTEM Z0 ANGLE:
AND
RUN
0
3 SEC
LOCATOR 1
Figure 9–15: FAULT LOCATOR SCHEME
L90 Line Current Differential System
9.4 FAULT LOCATOR
ACTUAL VALUES
FAULT REPORT #
DATE
TIME
FAULT TYPE
FAULT
FAULT LOCATION
FAULT# RECLOSE SHOT
827094A5.CDR
9
9-33
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