Unbalance - PeakTech 4145 Bedienungsanleitung

'annoyance factor' caused by the resulting flicker of a 60W lamp. A high flicker
reading means that most people would find the luminance changes irritating. The
voltage variation can be relatively small. The measurement is optimized to lamps
powered by 120V/60Hz or 230V/50Hz. Flicker is characterized per phase by the
parameters shown in a table. The Trend screen shows changes of instantaneous
flicker sensation level over time.
 Table
Flicker is characterized by: short term severity Pst (measured over 10 minutes) and a
long term severity Plt (measured over 2 hours). The Analyzer
measured over 1 minute too for fast feedback. Pst and Plt are parameters showing
flicker severity over a certain period of time. Momentary flicker is shown in the PF5
submenu and is reached via function key 【F4】. Flicker PF5 is displayed as a fast
Trend plot.
Available function keys:
F4 Access PF5 Trend screen.
F5 Switch between RUN and HOLD.

7.8. Unbalance

Unbalance displays phase relations between voltages and currents. Measuring
results are based upon the fundamental frequency component (50 or 60Hz, use
symmetrical components). In a 3-phase power system, the phase shift between
voltages and between currents should be close to 120°. Unbalance mode offers a
measurement table and a Phasor display.
 Table
The table screen shows all relevant numerical values: negative voltage unbalance
percentage, zero sequence voltage unbalance percentage, negative current
unbalance percentage, zero sequence current unbalance percentage, fundamental
phase voltage, frequency, fundamental phase current, angle between voltage and
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records severity