Siemens siprotec 7SA6 User Manual

Functions
6-114 7SA6 Manual
C53000-G1176-C156-2
Figure 6-67 Logic diagram of the echo function with distance protection teleprotection
6.6.2 Applying the Function Parameter Settings
General The distance protection teleprotection supplement is only in service if it is set during
the configuration to one of the possible modes of operation in address
121.Depend-
ing on this configuration setting, only those parameters that are relevant to the select-
ed mode of operation will appear here. If the teleprotection supplement is not required,
address
121 is Teleprot. Dist. = Disabled.
The following teleprotection schemes are available:
− PUTT (Pickup) = Permissive underreach transfer trip with pickup, as re-
ferred to in Subsubsection 6.6.1.1,
− PUTT = Permissive underreach transfer trip with zone accelera-
tion Z1B, as referred to in Subsubsection 6.6.1.2,
− POTT = Permissive overreach transfer trip, as referred to in Sub-
subsection 6.6.1.4,
− Directional
Comparison
Pickup
= Directional comparison pickup,
as referred to in Subsubsection 6.6.1.5,
− Unblocking = UnblockingwithZ1B,asreferredtoinSub-section
6.6.1.6,
− Blocking = Blocking scheme, as referred to in Sub-section 6.6.1.7,
Dist. OFF/BLOCK
O/C OFF/BLOCK
T
Dis. PICKUP
&
S
R
Q
fromrec.logic(Figure
6-58 or 6-60)
O/C PICKUP
≥1
&
>Dis.T.BlkEcho
ECHO only
OFF
ECHO and TRIP
„1“
≥1
≥1
2502 Time DELAY
0
20 0
T
2503
Trip EXTENSION
&
Echo release by earth fault
protection
(refer also to Figure 6-86)
&
CB open (3pole)
≥1
&
S
R
Q
ECHO SIGNAL
≥1
&
O/C VTsec lost
&
4040
ms
4246
FCT Weak Infeed
2501

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English