Siemens siprotec 7SD610 User Manual page 303

Differential protection
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Figure 3-21
The „Additional Information" button extends the representation by the following infor-
mation:
The timing master is indicated by a clock icon in the communication topology display.
In the event of an incorrect parameterisation or faulty wiring, the indications „Commu-
nication topology not complete" (topol complete OFF), „Communication topology in-
valid" and „Protection topology invalid" are displayed in a red bar.
The display of the circuit breaker positions is integrated into the topology display.
Closed circuit breakers are displayed in green, opened circuit breakers are displayed
in red and circuit breakers in an undefined state are displayed in grey.
An LED is used to select whether the communication topology or the protection topol-
ogy is to be displayed for the participating device. The display of the connections
changes correspondingly.
To get an overview of the quality of the individual communication paths, a connection
status is displayed for each connection. The statuses can be „OK", „asynchronous
connection", „high fault rate".
The status is displayed directly in the communication path display, i.e. in the display of
the arrows symbolising the connection. The colour of the connection indicates its
status, a legend at the lower screen edge explains the colouration. If a connection fails
completely, the connection is no longer displayed.
Table 3-16
Status
Colour of the
connection display
OK
green
failed
is not displayed
7SD610 Manual
C53000-G1176-C145-4
Communication topology – Limited representation
Connection status
The connection is OK.
3.3 Commissioning
Remark
303

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