ABB RER620 Technical Manual page 118
Advanced recloser protection and control
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- Product manual (44 pages) ,
- Applications manual (90 pages) ,
- Manual (60 pages)
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Section 4
Protection functions
112
Figure 49:
Phasors in a single-phase ground fault, phases A-N, and two-phase
short circuit, phases B and C, when the actuating polarizing quantity is
the negative-sequence voltage -V2
Positive-sequence voltage as polarizing quantity
Table 131:
Equations for calculating angle difference for positive-sequence quantity polarizing method
Used
Faulted
Used fault
polarizing
phases
current
voltage
A
I
V1
A
B
I
V1
B
C
I
V1
C
A - B
I
- I
V1
A
B
B - C
I
- I
V1
B
C
C - A
I
- I
V1
C
A
Angle difference
ANGLE A
_
=
( )
V
1
−
(
I
=
−
ANGLE B
_
( )
V
1
(
I
=
−
ANGLE C
_
( )
V
1
(
I
=
−
ANGLE A
_
( )
V
1
(
I
=
−
ANGLE B
_
( )
V
1
(
I
=
−
ANGLE C
_
( )
V
1
(
I
1MAC309294-MB F
)
−
A
RCA
−
−
)
120
B
RCA
−
+
)
120
RCA
C
−
−
+
I
)
30
RCA
A
B
−
−
−
I
)
90
B
C
RCA
−
−
+
I
)
150
C
A
RCA
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