Settings For The Line Differential Protection - Siemens SIPROTEC 7SD600 System Manual

6
Operating instructions
Numerical line differential protection SIPROTEC 7SD600 V3.0
0 1 L . O . F r
A
K E Y
B E
K E Y B E
6.3.4 Settings for the
line differential protection
The differential protection can be switched active
(ON-) or inactive (OFF-); in addition the trip command
may be blocked if the protective function is active.
1 0 L I N E
A
D I F F P R O T .
1 0 D I F F
A
O N
O F F
only M e s .
6 - 10
P R O T .
System manual Order no. E50417-G1176-C069-A1
[1136]
Resetting the Lockout function:
Y
with LED acknowledge key;
via binary input;
with LED acknowledge key or binary input
Warning
The differential protection is selected to
the ON state when delivered, but the
protection may not be operated without
at least the loop resistances being set
correctly first (see addr. 01 Rx in section
6.3.3). The device could react unexpec
tedly without these settings (e.g. trip)!
[1500]
Start of the block "Line differential protection"
"
[1501]
ON selection of the differential protection function
B
OFF selection of the differential protection function
Differential protection is active, signals events,
but the trip command is blocked.
Siemens AG January 1999