Functions
6-24 7SA6 Manual
C53000-G1176-C133-1
Figure 6-14 Multiple fault on a double-circuit line next to a generator
Address $ 7ULSSK)OW determines that the short-circuit protection functions
perform only a single-pole trip in case of isolated two-phase faults (clear of ground),
provided that single-pole tripping is possible and permitted. This allows a single-pole
rapid automatic reclosure cycle for this kind of fault. The trip type can be set to SROH
OHDGLQJSKDVH or SROHODJJLQJSKDVH. The parameter is only available in
versions with single-pole tripping. This setting can only be changed with DIGSI
®
4
under “Additional Settings”. If this option is used, it must be born in mind that the
phase preference should be the same throughout the entire network and that it must
be the same at all ends of one line. More information on the function is also contained
in Section 6.20.3 Overall Fault Detection Logic of the Device. The default setting is
WULSOHSROH.
6.1.3.1 Settings
Note:
The indicated secondary current values and values of impedance for setting
ranges and default settings refer to I
N
= 1 A. For the nominal current 5 A the current
values are to be multiplied by 5. The values of impedance are divided by 5.
~
L1–E
L2–E
Addr. Setting Title Function Setting Options Default Setting
1103 FullScaleVolt. Power System Data 2 1.0..1200.0 kV 400.0 kV
1104 FullScaleCurr. Power System Data 2 10..5000 A 1000 A
1105 Line Angle Power System Data 2 30..89 ° 85 °
1110 x’ Power System Data 2 0.005..6.500 Ohm / km 0.150 Ohm / km
1111 Line Length Power System Data 2 1.0..1000.0 km 100.0 km
1112 x’ Power System Data 2 0.005..10.000 Ohm / mile 0.242 Ohm / mile
1113 Line Length Power System Data 2 0.6..650.0 Miles 62.1 Miles
1116 RE/RL(Z1) Power System Data 2 -.33..7.00 1.00
1117 XE/XL(Z1) Power System Data 2 -.33..7.00 1.00
1118 RE/RL(Z1B...Z5) Power System Data 2 -.33..7.00 1.00
1119 XE/XL(Z1B...Z5) Power System Data 2 -.33..7.00 1.00
1120 K0 (Z1) Power System Data 2 0.000..4.000 1.000
1121 Angle K0(Z1) Power System Data 2 -135.00..135.00 ° 0.00 °
1122 K0 (> Z1) Power System Data 2 0.000..4.000 1.000
1123 AngleI K0(> Z1) Power System Data 2 -135.00..135.00 ° 0.00 °
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