ABB RED670 Handbuch Seite 295

1MRK 505 186-UDE B
Applikationshandbuch
(
1
× × +
2 Z Z
1 0 E
3
=
K
U
(
1
× × +
2 Z Z
1 0
3
EQUATION1284 V1 DE
This means that the reach is reduced in reactive and resistive directions. If the real
and imaginary components of the constant A are equal to equation
equation 199.
= × × +
Re( ) A R 0 (2 R 1
EQUATION1285 V1 DE
= × × +
Im( ) A X (2 R
0 1
EQUATION1286 V1 DE
The real component of the KU factor is equal to equation 200.
( )
Re
= +
Re K 1
U
( )
é
Re A
ë
EQUATION1287 V1 DE
The imaginary component of the same factor is equal to equation 201.
( ) ×
Im A X
( )
=
Im K
U
2
é
( )
+
Re A
ë
EQUATION1288 V1 DE
Ensure that the underreaching zones from both line ends will overlap a sufficient
amount (at least 10%) in the middle of the protected circuit.
T-Leitungen
)
+
R
f
= -
1
(
)
× ×
Z 2 Z
+
R
0
f
+ × - ×
R 0 3 Rf ) X 0 ( 0 2 X
+ × + × ×
R 3 R ) R (2 X
0 1 0
( )
×
2
A X
m 0
( )
2 2
ù é ù
+
Im A
û ë û
2
m0
2
é
( )
Im A
ë
Abschnitt 4
IED Anwendung
2
Z
m 0
)
+ +
Z 3 R
1 0
f
198
+ ×
X 1)
+
X )
1 0
(Gleichung 197)
and
(Gleichung 198)
(Gleichung 199)
(Gleichung 200)
(Gleichung 201)
291