Settings; Information List - Siemens siprotec 7SD5 User Manual

An endless echo signal between the line ends can be avoided (e.g. interference cou-
pling in the signal path) by blocking a new echo for a certain time Echo BLOCK Time
(address 2504) after each output of an echo signal. The typical setting is approx. 50
ms. After the distance protection signal was sent, the echo is equally blocked for the
time Echo BLOCK Time. This setting is only possible via DIGSI
tings.
If the distance protection and earth fault protection use a common transmission chan-
nel, spurious tripping may occur when the distance protection and the earth fault pro-
tection create an echo independently of each other. For this scenario, parameter
Echo:1channel (address 2509) must be set to YES. The default setting is NO.
Note
The „ECHO SIGNAL" (No. 4246) must be allocated separately to the output relays for
the transmitter actuation, as it is not contained in the transmit signals of the transmis-
sion functions.
The echo function settings are common to all weak infeed measures and summarized
in tabular form in Section 2.10.1.

2.7.15 Settings

Addresses which have an appended "A" can only be changed with DIGSI, under Ad-
ditional Settings.
Addr. Parameter
2101 FCT Telep. Dis.
2102 Type of Line
2103A Send Prolong.
2107A Delay for alarm
2108 Release Delay
2109A TrBlk Wait Time
2110A TrBlk BlockTime

2.7.16 Information List

No. Information
4001 >Dis.Telep. ON
4002 >Dis.Telep.OFF
4003 >Dis.Telep. Blk
4005 >Dis.RecFail
7SD5 Manual
C53000-G1176-C169-1
Setting Options
ON
OFF
Two Terminals
Three terminals
0.00 .. 30.00 sec
0.00 .. 30.00 sec
0.000 .. 30.000 sec
0.00 .. 30.00 sec; ∞
0.00 .. 30.00 sec
Type of In-
formation
SP >Distance Teleprotection ON
SP >Distance Teleprotection OFF
SP >Distance Teleprotection BLOCK
SP >Dist. teleprotection: Carrier faulty
2.7 Teleprotection for Distance Protection (optional)
Default Setting
ON Teleprotection for Distance prot. is
Two Terminals Type of Line
0.05 sec Time for send signal prolongation
10.00 sec Time Delay for Alarm
0.000 sec Time Delay for release after
pickup
0.04 sec Transient Block.: Duration exter-
nal flt.
0.05 sec Transient Block.: Blk.T. after ext.
flt.
Comments
®
at Additional Set-
Comments
205