Siemens siprotec 7SD5 User Manual page 355

Addr. Setting Title
6023 S2: c'
6024 S2: Line length
6028 S2: center ph.
6041 S3: Line angle
6042 S3: x'
6043 S3: c'
6044 S3: Line length
6048 S3: center ph.
If the parallel line compensation is used, set address 3805 Paral.Line Comp to YES
(presetting for devices with parallel line compensation). Further prerequisites are that
• the earth current of the parallel line has been connected to the fourth current input
• the current transformer ratio I4/Iph CT (address 221) in the Power System Data
• the parameter for the fourth current input I4 transformer has been set to In
• the mutual impedances RM/RL ParalLine and XM/XL ParalLine (addresses
If load compensation is applied to single-phase faults in double-fed lines of an earthed
system, set 3806 in address Load Compensat. YES. In case high fault resistances
are expected for single-phase faults, e.g. at overhead lines without overhead earth
wire or unfavourable footing of the towers, this will improve the accuracy of the dis-
tance calculation.
7SD5 Manual
C53000-G1176-C169-1
C Setting Options
0.000-500.000 µF/km; 0
1 A
0.000-100.000 µF/km; 0
5 A
0.000-800.000 µF/mi; 0
1 A
0.000-160.000 µF/mile; 0
5 A
0.1-1000.0 km; ohne 0
0.1-650.0 Miles; ohne 0
unknown/sym.
Phase 1
Phase 2
Phase 3
30-89 °; ohne 0
0.0010-1.9000 Ω/km; ohne
1 A
0
0.0050-9.5000 Ω/km;
5 A
without 0
0.0010-3.0000 Ω/mi; ohne
1 A
0
0.0050-15.0000 Ω/mile;
5 A
without 0
0.000-500.000 µF/km; 0
1 A
0.000-100.000 µF/km; 0
5 A
0.000-800.000 µF/mi; 0
1 A
0.000-160.000 µF/mile; 0
5 A
0.1-1000.0 km; ohne 0
0.1-650.0 Miles; ohne 0
unknown/sym.
Phase 1
Phase 2
Phase 3
I with the correct polarity and
4
1 has been set correctly (refer also to Section 2.1.2.1 under „Current Transformer
Connection") and
paral. line (address 220) in the Power System Data 1 (Section 2.1.2.1 under
„Current Transformer Connection") and
1126 and 1127) have been set correctly in the general protection data (plant data
2, Section 2.1.4.1).
Default Settings
0.050 µF/km
A2: Capacitance per unit
length C' in µF/km
0.010 µF/km
0.080 µF/mi
A2: Capacitance per unit
length C' in µF/mile
0.016 µF/mile
100.0 km A2: Line length in kilome-
ters
62.1 Miles A2: Line length in miles
unknown/sym. A2: Central phase
85 °
A3: Line impedance angle
0.0300 Ω/km
A3: Line reactance per unit
length: x' in Ω/km
0.1500 Ω/km
0.0484 Ω/mi
A3: Line reactance per unit
length: x' in Ω/mile
0.2420 Ω/mile
0.050 µF/km
A3: Capacitance per unit
length C' in µF/km
0.010 µF/km
0.080 µF/mi
A3: Capacitance per unit
length C' in µF/mile
0.016 µF/mile
100.0 km A3: Line length in kilome-
ters
62.1 Miles A3: Line length in miles
unknown/sym. A3: Central phase
2.19 Fault Locator
Description
355