Fault Locator - Siemens siprotec 7SD5 User Manual

4.19

Fault Locator

Start
Reactance Setting (secondary)
in Ω/km or Ω/mile
The other settings can be found in the Power System Data 2.
When configuring mixed lines, the reactance per unit length must be set for each line section (A1 to A3)
Parallel line compensation (optional)
Taking into consideration the load current in case of
single-phase earth faults
Output of the fault distance
Double-ended fault locating
Measuring tolerances
with sinusoidal quantities
Quality index (double-ended fault location)
Other output options (depending on order variant)
- BCD output time
1)
Output of the fault distance in km, miles, and % requires homogeneous lines or correctly configured line sections
7SD5 Manual
C53000-G1176-C169-1
With trip command or dropout
= 1 A 0.0050 Ω/km to 9.5000 Ω/km
for I
N
= 5 A 0.0010 Ω/km to 1.9000 Ω/km
for I
N
= 1 A 0.0050 Ω/mile to 15.0000 Ω/mile
for I
N
= 5 A 0.0010 Ω/mile to 3.0000 Ω/mile
for I
N
Can be switched on/off
The setting values are the same as for distance protection (see
Section 4.5)
Correction of the X-value (can be enabled and disabled)
In Ω primary and Ω secondary,
in km or miles line length
in % of the line length
Can be switched on/off
2.5 % of the line length
at 30° ≤ ϕ ≤ 90° and U
k
0 to 10 (= maximum accuracy)
as BCD–code: 4 bit units + 4 bit tens + 1 bit hundreds + data
valid bit
0.01 s to 180.00 s; ∞
4.19 Fault Locator
Increments 0.001 /km
Increments 0.001 Ω/mile
1)
1)
≥ 0.1
/U
k N
Increments 0.01 s
565