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Figure 2-30
Logic Diagram of Line PT Broken Wire Supervision
Logic of line PT broken wire supervision:
1. For device 7VU681, Line1 PT broken wire will be unavailable if the parameter 213 PT Connection of Line1
is set to Not Connected; Line2 PT broken wire will be unavailable if the parameter 214 PT Connection
of Line2 is set to Not Connected.
2. If the parameter 213 PT Connection of Line1 is set to Va-b transformer, Vb-c transformer or Vc-a
transformer, the value of dead line equals the value of 8903 Line Dead Voltage Threshold; if the
parameter 213 PT Connection of Line1 is set to Va transformer, Vb transformer or Vc transformer, the
value of dead line equals the value of 8903 Line Dead Voltage Threshold/1.732. It is same with Line2.
2.3.1.1 Settings
Addr.
Supervision
9101
2.3.1.2 Information List
No.
17737
17729
17730
17731
17732
SIPROTEC, 7VU681, User Manual
C53000-G1176-C368-1, Release Date 07.2012
Settings
PTBroken Wire
Information
Busbar PT Brk.
Busbar1 PT Broken
Busbar2 PT Broken
Line1 PT Broken
Line2 PT Broken
Setting Options
ON
OFF
Type
Function No.
OUT
OUT
OUT
OUT
OUT
2.3 Monitor Function
Default Setting
Comments
ON
Inf. No.
Function
57
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