Siemens SIPROTEC 4 7SD80 User Manual

Statistics
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.
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.
Information List
No.
Information Type of
Informa-
tion
Comments
1000 # TRIPs= VI Number of breaker TRIP commands
1027 Σ Ia = VI Accumulation of interrupted current Ph A
1028 Σ Ib = VI Accumulation of interrupted current Ph B
1029 Σ Ic = VI Accumulation of interrupted current Ph C
1030 Ia max. = VI max. fault current Phase A
1031 Ib max. = VI max. fault current Phase B
1032 Ic max. = VI max. fault current Phase C
2896 79 #Close1./3p= VI No. of 1st AR-cycle CLOSE commands,3pole
2898 79 #Close2./3p= VI No. of higher AR-cycle CLOSE commands,3p
2.17.2
2.17.2.1
2.17.2.2
Functions
2.17 Auxiliary Functions
SIPROTEC 4, 7SD80, Manual 183
E50417-G1100-C474-A2, Edition 02.2018

Siemens SIPROTEC 4 7SD80 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7SD80
Category	Power distribution unit
Language	English