Siemens SIPROTEC 7SS522 V4.6, Руководство пользователя

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Control During Operation
212
7SS52 V4 Manual
C53000-G1176-C182-3
6.2 Reading Out Information
The SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection provides
the following information for on-site retrieval or readout via DIGSI:
•
Annunciations,
•
Operational measured values,
•
Fault data.
In this chapter we will introduce each of these information types and explain how you
can retrieve them, save them to your PC, and acknowledge them.
6.2.1 Annunciations
Annunciations give an overview of important fault data, of the function of the protection
system and they are a means of controlling functional sequences during test and com-
missioning. During operation they also give information on switching operations, the
states of measured data and on the protection system itself.
The annunciations which are generated in the central unit are divided into annuncia-
tion groups and you can access them as follows:
•
Annunciations of the central unit and of the bay units are displayed in DIGSI. In this
case, the PC is linked to the central unit via the PC port or via the service port.
•
Annunciations of individual bay units are displayed via DIGSI. In this case, the PC
is linked to the central unit and communicates directly with the bay unit or the PC is
connected to a bay unit.
•
The annunciations are forwarded to a control center (if available) via the serial sys-
tem port of the central unit.
•
Annunciations are displayed via the display of the central unit or of the bay units.
•
Annunciations are indicated via light-emitting diodes (LED) of the central unit or of
the bay units.
•
Binary outputs (pilot relay/command relay) of the central unit or of the bay units.
The event buffer will be preserved in the event of an auxiliary supply failure if a buffer
battery exists.
The appendix contains a complete list of all 7SS52 V4 annunciations with the corre-
sponding information number (
FNo.
). There it is also indicated to which destination
each annunciation can be reported. If certain functions are not available for a model
with reduced functional scope or if they are configured
disabled
, their annunciations
will not be displayed.
No password is required for retrieving annunciations.
Note
If the bay unit and central unit are operated via the same COM port, a bay unit can
only be opened with DIGSI when the central unit is closed.
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