4.4 Teleprotection for Distance Protection
449
7SA522 Manual
C53000-G1176-C155-3
Overreach Schemes via Protection Data Interface (optional)
Phase-segregated for two or three line ends
Method Permissive Overreach Transfer Trip (POTT)
(with overreaching zone Z1B)
Send signal prolongation 0.00 s to 30.00 s Increments 0.00 s
Enable delay 0.000 s to 30.000 s Increments 0.001 s
Transient blocking time 0.00 s to 30.00 s Increments 0.01 s
Wait time for transient blocking 0.00 s to 30.00 s; ∞ Increments 0.01 s
Echo delay time 0.00 s to 30.00 s Increments 0.01 s
Echo impulse duration 0.00 s to 30.00 s Increments 0.01 s
Time expiry tolerances 1 % of setting value or 10 ms
The set time is a pure delay time.
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