MI 2883 Energy Master
Theory and internal operation
147
10-min interval (n-1)
10-min interval (n)
10-min interval (n+1)
Dip
Voltage
Flagged Interval
Figure 5.16: Flagging data indicate that aggregated value might be unreliable
5.1.17
Waveform snapshot
During measurement campaign Energy Master has the ability to take waveform
snapshot. This is particularly useful for storing temporary characteristics or network
behaviour. Snapshot stores all network signatures and waveform samples for 10/12
cycles. Using MEMORY LIST function (see 3.17) or with PowerView v3.0 software, user
can observe stored data. Waveform snapshot is captured by starting GENERAL
recorder or by pressing
for 3 seconds in any of MEASUREMENTS sub
screens.
Long press on
triggers WAVEFORM SNAPSHOT. Instrument
will record all measured parameters into file.
Note:
WAVEFORM SNAPSHOT
is automatically created at the start of GENERAL
RECORDER.
5.2 EN 50160 Standard Overview
EN 50160 standard defines, describes and specifies the main characteristics of the
voltage at a network user’s supply terminals in public low voltage and medium voltage
distribution networks under normal operating conditions. This standard describe the
limits or values within which the voltage characteristics can be expected to remain over
the whole of the public distribution network and do not describe the average situation
usually experienced by an individual network user. An overview of EN 50160 Low
voltage limits are presented on table below.
