Siemens siprotec 7SA6 User Manual

Functions
6-136 7SA6 Manual
C53000-G1176-C133-1
Figure 6-81 Logic diagram of the weak infeed tripping
*)
*)
>Dis.T.RecCh1L1
4207
U
L1
Two terminals
Three terminals

/LQH&RQILJ
&
„1“
Two terminals
Three terminals

/LQH&RQILJ
„1“
≥1
EF OFF/BLOCK
5040
ms
&
S
R
Q
I
E
3I
0
 ,R0LQ7HOHSURW
EF Pickup
≥1
&

)&7:HDN,QIHHG
ECHO only
OFF
ECHO and TRIP
„1“
U
L1

81'(592/7
VT loss
&
Dist. OFF/BLOCK
40
ms
&
S
R
Q
&
PICKUP L1
CB closed L1
&
≥1
&
W/I Pickup L1
>BLOCK Weak Inf
&
U
L2
U
L2
 81'(592/7
&
S
R
Q
&
PICKUP L2
CB closed L2
&
≥1
&
U
L3
U
L3

81'(592/7
&
S
R
Q
&
PICKUP L3
CB closed L3
&
≥1
&
with earth fault protection
with dist. protection
*)
*)
*)
*)
applies to PUTT and
POTT;
with unblock schemes,
the ”unblock” signals
apply acc. to Fig. 6-53
*)
*)
*)
applies to direc. comp;
with unblock schemes the
“unblock” signals apply
4203
>Dis.T.RecCh1L2
4208
>Dis.T.RecCh1L3
4209
>Dis.Tel Rec.Ch1
4206
>Dis.Tel Rec.Ch2
4210
>EF Rec.Ch1
1318
>EF Rec.Ch2
1319
4232
W/I Pickup L24233
W/I Pickup L3
4234
Undervoltage
 7ULS(FKR'(/$<
2503
7ULS(;7(16,21


2502
7ULS(FKR'(/$<
50

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English