Alstom iSTAT M355, Manual, Page: 15 / 154

User Manual M3x5/EN M/B
iSTAT M3x5
Page 13
7.2 Purpose
The M3x5 Quality Analyser performs measurements in compliance with regulatory standard
IEC 61000-4-30: 2008 and evaluates recorded parameters for analysis according to the limit
values defined in European supply quality standard EN 50160:2011. The limit values can be
modified to match the requirements of the customer.
Moreover the M3x5 stores measurements and quality reports in internal memory for further
analysis of recorded measurements. From multiple devices installed in different locations,
the user can gain the overall picture of the system behaviour. This can be achieved with
respect to its accurate internal real time clock and the wide range of time synchronization
sources supported, which ensure accurate, time-stamped measurements from dispersed
units.
All required measurements, weekly PQ reports and alarms can also be stored locally in the
internal memory. Stored data can then be transferred to a memory card or accessed
through communication for post analysis.
The internal memory capacity allows the storing of more than 170,000 variations of the
measurements from the standard values, which allows the eventual reasons for the
problems in the network to be found. The limits and the required quality in a monitored
period can be defined for each monitored characteristic.
7.3 Family
The iSTAT M3x5 family provides:

M355 is a class 0.1 communicating Power Quality Analyser that meets Class A to
IEC61000-4-30:2008. The M355 also includes a tariff structure, alarm indication, 0.2S
energy measurement function and a range of communications and input/output
options.

Others to be defined.
Software:

QDSP2 for setting, monitoring, recording and Power Quality application software.
7.4 QDSP2
The QDSP2 software is used for configuring the M3x5 . Additionally it can be used to obtain
and display many real time measurements in graphical or tabular form. QDSP2 also
configures the data and power quality recorders and is used to download and display the
recorded data.
A separate manual is available for QDSP2 which describes its operation and all of the
features.