Alstom iSTAT M355, Руководство пользователя

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M3x5/EN M/B User Manual
Page 68
iSTAT M3x5
10.15 General Purpose Recorder
The general purpose recorder consists of 4 partitions (A, B, C and D). The general purpose
recorder does not include the alarm recorder or the PQ reports and details recorder.
These four recorder partitions are independent from each other and each can be configured
to record up to 32 different values in each partition.
Recorders C and D can be user defined as a standard trend recorders (like recorders A and
B) or can be defined as dedicated harmonic recorders. As such they will record all 63
harmonics, voltage or current depends on user setting for each of those two recorders.
Settings are available in general tab of Standard recorders section (see figure 10-17).
FIGURE 10-18: DATA RECORDER
10.15.1 Storage interval
The storage interval sets a time interval for readings to be recorded. This can be different for
each recorder partition.
10.15.2 MD Time constant
When maximum demand values are to be recorded, this setting sets a period for calculation
of maximum and minimum value in thermal mode (Minimum (MD) or Maximum (MD)).
Different parameters can be set for Recorded parameters 1-8, 17-24 and 9-16, 25-32. This
setting is only available for recorders A and B.
10.15.3 Recorded quantities
For each measurement to be recorded it is possible to set the required quantity and its type.
Parameter
The required monitoring quantity can be selected from a list of supported measurements.
Besides the primary electrical quantities, auxiliary quantities from the input modules can also
be selected.
Value
The type of the selected quantity to be recorded can be defined.

Minimum and Maximum value represents minimum or maximum of the recorded
averaged values within the selected storage interval. Note that the minimum and
maximum values are not single period values but an average (0.1 s to 5 s).