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Function
2.3 Monitor Function
2.3.2
Busbar Voltage Sequence Supervision
Busbar, busbar1 and busbar2 have the same voltage sequence supervision logic. Take busbar for example,
the logic is as followed.
If Va-b is prior to Vb-c, Vb-c is prior to Vc-a, Vc-a is prior to Va-b, the phase sequence is right, otherwise
warning message 17993 Failure: Phase Sequence Busbar Voltage will be released in 5 seconds. The
precondition of this logic is the phase-phase voltages are > 80%UN. UN is the value of 236 PT Rated
Secondary Voltage Busbar.
2.3.2.1 Settings
Addr.
Supervision
9102
Please reference Power System Data 1 to get other settings.
2.3.2.2 Information List
No.
17993
17994
17995
■
58
Settings
Busbar Voltage
Sequence Supervision
Information
Fail Ph.Seq.V.B.
FailPh.Seq.V.B1
FailPh.Seq.V.B2
Setting Options
ON
OFF
Type
Function No.
OUT
OUT
OUT
C53000-G1176-C368-1, Release Date 07.2012
Default Setting
Comments
ON
Inf. No.
SIPROTEC, 7VU681, User Manual
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