Siemens siprotec 7SA522 User Manual page 216

Functions
L1
L2
L3
L1
L1
Dis FD Z1 L1
L2
L2
Dis Anr Z1 L2
L3
L3
Dis Anr Z1 L3
L1
L2
L3
Figure 6-35 Tripping logic for the 1st Zone
L1
L2
L3
L1
L1
Dis FD Z2 L1
L2
L2
Dis FD Z2 L2
L3
L3
Dis FDZ2 L3
L1
L2
L3
L1
L2
L3
Z2 undelayed
(see figure 6-24)
Figure 6-36 Tripping logic for the 2nd Zone
6-68
=1
"$ U  ƒuh†r
T 0
≥1
U €ˆy‡vƒuh†r
"%
T 0
≥1
0381 >1p Trip perm.
=1
" $
T2-1phase
T 0
≥1
" %
T2-multi-phase
T 0
≥1
≥1
Dis FD Z3 L1
Dis FD Z3 L2
Dis FD Z3 L3
Z3 undelayed
(see figure 6-24)
Figure 6-37 Tripping logic for the 3rd Zone
&
≥1
&
&
≥1
&
&
U"Ã9@G6`Ã
"!$
T 0
≥1
≥1
&
3771 Dis T1 exp.
3801 Dis G–trip
3802 Dis trip 1polL1
3803 Dis trip 1polL2
Tripping logic
3804 Dis trip 1polL3
of the distance
protection
3805 Dis trip L123
3811 Dis trip Z1 1p
L1
L2
L3
3823 Dis trip Z1 3p1
3824 Dis trip Z1 3pm
3774 Dis T2 exp.
3801 Dis G–trip
3802 Dis trip 1polL1
3803 Dis trip 1polL2
Tripping logic
of the distance
protection
3804 Dis trip 1polL3
3805 Dis trip L123
L1
L2
L3
3816 Dis trip Z2 1p
3817 Dis trip Z2 3p
3777 Dis T3 exp.
3801 Dis G–trip
Tripping logic
of the distance
3805 Dis trip L123
protection
3818 Dis trip Z3
C53000-G1176-C119-2
7SA522 Manual