Parameter: Demand Data Log > Demand Window Type
•
Default Setting: Fixed
This selects how the Demand Window is defined:
– Fixed: the maximum, minimum and mean values demand statistics are calculated over a fixed
window duration. At the end of each window the internal statistics are reset and a new window is
started. The first window is started when the setting is entered.
– Peak: Records the maximum and minimum values since the Demand Data Log feature was last
reset.
– Rolling: the maximum, minimum and mean values demand statistics are calculated over a
moving window duration. The internal statistics are updated when the window advances. The oldest
stored values when new samples are recorded at the end of the Demand Window.
Maximum and minimum values (and times) are stored for previous data log periods.
Parameter: Demand Data Log > Demand Reset
•
Default Setting: <None>
Demand data log statistics can be reset from the device fascia.
The statistics can also be reset from a binary input or communication command. After reset the update
period and window are immediately restarted.
Configuration > Data Storage > Demand Data Log
Parameter Range Default Setting
Data log period 5 to 10 min, Δ 1 min
10 to 60 min, Δ 5 min
5 min
Clear data log
Demand window 1 to 24 hr, Δ 1 hr 24 hr
Demand window type Fixed, peak, rolling Fixed
Demand reset
The demand measurement function corresponds to the following logical nodes in IEC 61850:
Table 3-3
Demand Measurements
7SR5110 (Current
only)
Ia (Ia =) MEAS MeanIMMXU1 A.phsA
Ib (Ib =) MEAS MeanIMMXU1 A.phsB
Ic (Ic =) MEAS MeanIMMXU1 A.phsC
Ineut (Ig =) MEAS MeanIMMXU1 A.neut
Ia (Ia =) MEAS MinIMMXU1 A.phsA
Ib (Ib =) MEAS MinIMMXU1 A.phsB
Ic (Ic =) MEAS MinIMMXU1 A.phsC
Ineut (Ig =) MEAS MinIMMXU1 A.neut
Ia (Ia =) MEAS MaxIMMXU1 A.phsA
Ib (Ib =) MEAS MaxIMMXU1 A.phsB
Ic (Ic =) MEAS MaxIMMXU1 A.phsC
Ineut (Ig =) MEAS MaxIMMXU1 A.neut
Device Functionality
3.6 Data Storage
96 Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019
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