Alstom iSTAT M355, Manual

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M3x5/EN M/B User Manual
Page 70
iSTAT M3x5
10.16.2 Power Supply Quality
FIGURE 10-19: GENERAL POWER QUALITY SETTINGS
Basic parameters are defined that influence other settings
10.16.2.1 Monitoring mode
Monitoring mode can be set to:

EN50160: Monitoring according to EN 50160 enabled. Weekly reports are issued
according to set parameters

No monitoring: Weekly reports for network compliance with the standard are disabled
10.16.2.2 Electric energetic system
The requirements for PQ monitoring differ according to the type of public distribution system
being monitored. Therefore it is essential to choose the proper type. This setting influences
some of the predefined limit lines according to EN 50160.
M3x5 can monitor PQ within the following systems:

Low Voltage grid connected system

Medium Voltage grid connected system

Low Voltage islanded system

Medium Voltage islanded system
PLEASE NOTE
Choosing one of the listed distribution systems automatically sets PQ characteristics
according to requirements in EN 50160 for that particular system.
10.16.2.3 Nominal supply voltage
Sets the voltage level of the monitored system and is used as a reference for the calculation
of power quality indices and is usually equal to the nominal network voltage (also marked as
Udin in various standards). Factory default value is EU standard low voltage value 230 V.