Siemens siprotec 7SA6, Manual

Page: 686 / 876

Technical Data
10-18
7SA6 Manual
C53000-G1176-C156
10.3 Power Swing Supplement (optional)
Power swing detection Rate of change of the impedance phasor
and observation of the path curve
Max. power swing frequency approx. 7 Hz
Power swing blocking programs Block 1st zone only
Block higher zones
Block 1st and 2nd zone
Block all zones
Out-of-step trip Trip following instable power swings
(out-of-step)
10.4 Distance Protection Teleprotection Schemes
Mode For two line ends with one channel for each direction or
with three channels for each direction
(for phase segregated transmission)
For three line ends with one channel for each direction and
opposite line end
Underreach
Schemes Method Permissive Underreach Transfer Trip
(PUTT) (with overreaching zone Z1B)
PUTT (Pickup)
Direct transfer trip
Send signal prolongation 0.00 s to 30.00 s (steps 0.00 s)
Underreach
Schemes via
Protection Data
Interface
(optional) Method Permissive Underreach Transfer Trip
(PUTT) (with overreaching zone Z1B)
Send signal prolongation 0.00 s to 30.00 (steps 0.01 s)
Overreach
schemes
Methods Permissive Overreach Transfer Trip
(POTT) (with overreaching zone Z1B)
Dir. Comp. Pickup
Unblocking (with overreaching zone Z1B)
Blocking (with overreaching zone Z1B)
Pilot wire comp.
Rev. Interlock
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)