Siemens SIPROTEC 7SD600 System Manual page 90

Numerical line differential protection SIPROTEC 7SD600 V3.0
0 1 I N L n
A
1 0 0 0 A
0 1 I W P R I
A
1 0 0 0 A
It is not necessary to balance the pilot wire resi
stances by additional resistors in 7SD600 because the
device provides internal matching automatically by
calculation. However, the wire resistance must be
entered to enable it to do this (addr. 01 Rx). In addi
tion to the loop resistance of the pilot wires a resi
stance of 80 W must be added for the pilot wire moni
toring (if installed). A further 60 W must be added for
every isolating transformer 7XR95. The device can
measure the wire resistance itself during commissio
ning (see section 6.6).
0 1 R X
A
W
0
0 1 T A U S K
A
0 . 2 0 s
0 1 L . O u t
A
O F F
O N
Siemens AG January 1999
Operating instructions
System manual
[1102]
Primary rated current of the protected plant (of the
Y
line)
B
smallest setting value:
largest setting value:
[1103]
Primary current of the current transformer
Y
B
smallest setting value:
largest setting value:
In addr. 01 TAUSK the minimum trip command dura
tion is set. It applies to all protective functions which
can initiate tripping and is maintained even if the cir
cuit-breaker has switched off the short-circuit current
earlier.
In addr. 01.L.Out and 01L.O.Fr the possibility of swit
ching the Lockout function on and off and of selecting
the type of Reset is given.
[1131]
Loop resistance of the pilot wire pair
Y
B
smallest setting value:
largest setting value:
[1134]
Minimum duration of the trip command
Y
B
Setting range: 0.01 to 60.00 s
[1135]
Switch off the Lockout function
Y
B
Switch on the Lockout function
Order no. E50417-G1176-C069-A1
. . . . . . . . . . . . 1 A
. . . . . . . . 100 000 A
. . . . . . . . . . . . 1 A
. . . . . . . . 100 000 A
. . . . . . . . . . . . 0 W
. . . . . . . . . . 2 000 W
6
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