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ABB REL 352 Instruction Manual page 32

Numerical phase comparison transmission line protection system

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Power Automation and Protection Division
I
A
I
B
I
C
IKEY
(Mark)
1
0
(Space)
REL 352 Version 1.00
Symmetrical
Component
Filter
C
, C
, C
o
1
2
Figure 3-2. Symmetrical Component Filter
IT
Figure 3-3.
I.L. 40-201.9
IT = C
I
C
I
+ C
I
0
0 +
1
1
2
2
1
LP
0
0
LN
1
3
3-11

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