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Statistics
2.17.2
The number of trips initiated by 7SD80, the accumulated breaking currents resulting from trips initiated by
protection functions and the number of close commands initiated by the automatic reclosure function are
counted.
2.17.2.1
Functional Description
Counters and Memories
The counters and memories of the statistics are saved by the device. Therefore, the information will not get
lost in case the auxiliary voltage supply fails. The counters, however, can be reset to zero or to any value
within the setting range.
Switching statistics can be viewed on the LCD of the device, or on a PC running DIGSI and connected to the
operating or service interface.
A password is not required to read counter and stored values but is required to delete them. For more informa-
tion see the SIPROTEC 4 System Description.
Number of Trips
This function counts the number of trips initiated by the device 7SD80.
Number of Automatic Reclosing Commands
If the device is equipped with the integrated automatic reclosure, the automatic close commands are also
counted separately for each reclosure cycle.
Breaking Currents
Following each trip command the device registers the value of each current phase that was switched off in
each pole. This information is then provided in the trip log and summated in a register. The maximum current
that was switched off is also stored. Measured values are indicated in primary values.
Transmission Statistics
In 7SD80 the protection communication is registered in statistics. The runtimes of the information between
the devices via the protection data interfaces (forth and back) are measured permanently. The values are kept
stored in the Statistics folder. The availability of the transmission media is also reported. The availability is indi-
cated in % / min and % / h. This enables an evaluation of the transmission quality.
2.17.2.2
Information List
No.
Information
1000
# TRIPs=
1027
Σ Ia =
1028
Σ Ib =
1029
Σ Ic =
1030
Ia max. =
1031
Ib max. =
1032
Ic max. =
2896
79 #Close1./3p=
2898
79 #Close2./3p=
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
Type of
Comments
Informa-
tion
VI
Number of breaker TRIP commands
VI
Accumulation of interrupted current Ph A
VI
Accumulation of interrupted current Ph B
VI
Accumulation of interrupted current Ph C
VI
max. fault current Phase A
VI
max. fault current Phase B
VI
max. fault current Phase C
VI
No. of 1st AR-cycle CLOSE commands,3pole
VI
No. of higher AR-cycle CLOSE commands,3p
Functions
2.17 Auxiliary Functions
183
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