INSTALLATION
Network analyzer ANRET M-90A-BUS may only be used in three-phase systems 230V AC
Phase-neutral, with 400V AC Phase-Phase voltage between lines.
As for installation directions, follow the diagram on page 34:
− for 4-wire three-phase systems (3 phases + neutral) also with non-symmetrical
and/or non-balanced systems, connect the neutral lead to terminal 1
− for 3-wire three-phase symmetrical and balanced systems, it is possible not to
connect the neutral lead
For correct measurement, the 3 phase leads coming from the distribution panel must
be inserted in the through holes vertically from above; failure to do so will cause a
connection-error warning to appear on the display. In case of a connection error, the
display will indicate which phase or phases are misconnected (cfr. "ERROR MESSAGES
– MISCONNECTION" ).
SELECTING PROGRAMMING PARAMETERS
The following functions are accessed by holding down the PRG key for at least 2
seconds:
− viewing built-in software version and date
− backlighting control
− zeroing total active and reactive energy values
− confi guring serial output RS-485
To scroll the various parameters and confi rm the values entered, press the OK key. To
change the values or alter the option, press
As soon as the last page is confi rmed the programming mode is exited; this also occurs
if no key is pressed for at least 25 seconds: in this case, the parameter that was not
confi rmed using the OK key, is not stored.
1) DATE AND VERSION OF BUILT-IN SOFTWARE
or .
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User Manual - ANRET M-90A-BUS