Data Storage; Demand Data Log - Siemens Reyrolle 7SR5 Manual
Transformer protection device
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Also See for Reyrolle 7SR5:
- Operating manual (146 pages) ,
- Manual (54 pages) ,
- Device manual (556 pages)
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Device Functionality
3.6 Data Storage
3.6
Data Storage
Stored data can be viewed and analyzed from the device using the Reydisp PC tool.
Data storage is categorized as the types listed below:
•
Demand/data logs
•
Waveform records storage
•
Fault records storage
•
Event log
•
Energy records
All records are time stamped. When the maximum capacity of the data storage buffer is reached the oldest
entries are deleted and replaced by the newest entries.
Indications can be output spontaneously via the communication interfaces of the device and when requested
using the General Interrogation command. Reydisp can monitor device indications during online mode
in a special indication window. Indications can be made accessible to higher-level control systems through
mapping on various communication protocols.
Data records are backed up in non-volatile memory and are permanently stored even in the event of loss of
auxiliary DC supply voltage.
The functionality is configured in the Configuration > Data Storage menu.
Demand Data Log
3.6.1
The data log monitors and records average, maximum and minimum demand levels.
The data log can measure and store up to 10,080 individual time stamped measurements, the time between
each measured value (sampling rate) is defined by the user.
Maximum, minimum and mean values of measured current, voltage and power (where applicable) are
recorded and can be viewed in the relay Instruments menu.
Complete demand log records can be viewed and analyzed using the Reydisp PC tool.
The functionality is configured in the Configuration > Data Storage > Demand/Data Log menu.
Demand Settings
Parameter: Demand Data Log > Data Log Period
•
Default Setting: 5 min
This setting defines the time between each data sample.
Parameter: Demand Data Log > Clear Data Log
•
Default Setting: <None>
This setting deletes all contents of the data log.
The data log can also be reset from a binary input or communication command.
Parameter: Demand Data Log > Demand Window
•
Default Setting: 24 hrs
This setting defines the maximum time over which the demand values are measured. A new set of
demand values are recorded after expiry of the Demand Window Time.
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Reyrolle 7SR5, Transformer Protection Device, Device Manual
C53000-G7040-C015-1, Edition 11.2019
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