4 Measurands and Recording
4.1 Measuring and Recording System
42 SICAM P850/P855, 7KG85xx, Device Manual
E50417-H1040-C482-A6, Edition 10.2018
4.1.2.6 Storing and Transmitting Recorder Data
Data Storage
SICAM P850/P855 features an internal 2-GB data storage for storing the recorder data. You can manually pa-
rameterize the data volume that can be stored for each recorder from 0 % to 100 %:
SICAM P850:
• Measurement recorder: 60 % to 90 %
• Fault recorder: residual capacity (min. 10 %)
SICAM P855:
• Measurement recorder: 33 % to 65 %
• Fault recorder: 3 % to 35 %
• Event recorder: 1 % to 33 %
• Trend recorder: residual capacity (min. 31 %)
When the maximum storage capacity is exceeded, the oldest data are overwritten with the up-to-date data.
The data is output as time-stamped list. The period of time over which data are output can be parameterized.
Data Transmission
Data are transmitted from the internal 2-GB memory as HTTP download with the data types COMTRADE
(fault recorder data), PQDIF (measured recorder, trend recorder), or CSV (measurement recorder) see
SICAM P850/P855 System Manual, Chapter Communication.
Table 4-3 File Format Supported Relevant to Device and Recorder Type
Fault recorder Trend recorder Measurement recorder
SICAM P850 COMTRADE - CSV
SICAM P855 COMTRADE PQDIF CSV/PQDIF
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