Siemens siprotec 7SA522 User Manual page 218

Functions
L1
L2
L3
L1
L1
Dis FD Z1B L1
L2
L2
Dis FD Z1B L2
L3
L3
Dis FD Z1B L3
L1
L2
L3
L1
L2
L3
Z1B instantaneous
(refer Fig. 6-24)
ENABLE Z1B
3611
 ! Uryrƒ…‚‡Ã9v†‡
(further)
„1"
not available
Dis Sig active
Dis relZ1B/T1B L1
Dis relZ1B/T1B L2
Dis relZ1B/T1B L3
†‡Ã6SÃ3Ãa 7
1357
No
„1"
Yes
ENABLE ARzones
0383
Only 1ph AR
0382
Figure 6-39 Tripping logic for the controlled zone Z1B
Tripping Logic
6-70
=1
"$$ U 7 ƒuh†r
T 0
≥1
"$% U 7€ˆy‡vƒuh†r
T 0
≥1
≥1
&
L1
&
L2
&
L3
&
&
&
&
tripping
for 2pole
The output signals generated by the individual zones are combined in the actual trip-
ping logic to form the trip output signals. The signal 'LV*HQ 7ULS is the general
trip command (refer to Fig. 6-35 up to 6-39). The single-pole information 'LV7ULS
S/ 'LV7ULS S/ 'LV7ULS S/ implies that tripping will take place sin-
gle-pole only. The 'LV 7ULS / signal indicates the three-pole trip command. Fur-
thermore, the zone that initiated the tripping is identified; if single-pole tripping is pos-
sible, this is also alarmed, as shown in the zone logic diagrams (Figures 6-35 up to 6-
39). The actual generation of the commands for the trip relay takes place in the tripping
logic of the device. (refer to Sub-section 6.17.4).
&
≥1
&
&
≥1
L1
L1
L1
L2 ≥1
L2
L2
L3 ≥1
L3
L3
1pole
L1
L2
L3
faults
3780 Dis T1B exp.
3801 Dis G–trip
Tripping logic
3802 Dis trip1polL1
of the distance
protection
3803 Dis trip1polL2
3804 Dis trip1polL3
3805 Dis trip L123
3813 Dis trip Z1B1p
L1
3825 Dis trip Z1B3p1
L2
&
L3
L1
per Phase
3826 Dis trip Z1B3pm
L2
L3
L1
&
L1
≥1
L2
&
3850 Dis trip Z1B Tel
L2
L3
&
L3
C53000-G1176-C119-2
7SA522 Manual