Technical Data
10-237SA6 Manual
C53000-G1176-C133-1
10.6 Earth Fault Protection Teleprotection Schemes
Mode For two line ends with one channel for each direction
with three channels for each direction
For three line ends with one channel for each direction and
oposite line end
Comparison
Schemes
Schemes directional comparison pickup scheme
directional unblocking scheme
directional blocking scheme
Application 2-terminal lines
3-terminal lines
multi-terminal lines via CFC
Send signal prolongation 0.00 s to 30.00 s (steps 0.01 s)
Release signal prolongation 0.000 s to 30.000 s (steps 0.001 s)
Transient blocking time 0.00 s to 30.00 s (steps 0.01 s)
Waiting time for transient blocking 0.00 s to 30.00 s; ∞ (steps 0.01 s)
Echo delay time 0.00 s to 30.00 s (steps 0.01 s)
Echo impulse duration 0.00 s to30.00 s (steps 0.01 s)
Time expiry tolerances 1 % of set value or 10 ms
The set times are pure delay times.
10.7 Weak-Infeed Tripping
Operation method Phase segregated undervoltage detection after reception of a carrier signal from the
remote end
Undervoltage
Detection
Setting value U
PhE
< 2 V to 70 V (steps 1 V)
Drop-off to pick-up ratio approx. 1.05
Pick-up tolerances ≤ 5 % of set value or 0.5 V
Times Release delay 0.00 s to 30.00 s (steps 0.01 s)
Release prolongation 0.00 s to 30.00 s (steps 0.01 s)
Time expiry tolerances 1 % of set value or 10 ms
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