Transientes - PeakTech 4145 Bedienungsanleitung

Each phase voltage or current can be split-up into three components: positive
sequence, negative sequence, and zero sequence.
The positive sequence component is the normal component such as present in
balanced 3-phase systems. The negative sequence component results from
unbalanced phase-to-phase currents and voltages. This component for instance
causes a 'braking' effect in 3-phase motors, which will result in overheating and life
reduction. Zero sequence components may appear in an unbalanced load in 4-wire
power systems and represent the current in the neutral wire. Unbalance exceeding
2% is considered as too high.
7.9. Transients
The Analyzer can capture waveforms at high-resolution during a variety of
disturbances. The Analyzer will give a snapshot of the voltage and current waveforms
at the precise time of the disturbance. This allows you to see the waveforms during
transients.
Transients are fast spikes on the voltages waveform. Transients can have so much
energy that sensitive electronic equipment can be affected or even damaged. A
waveform is captured each time that the voltage exceeds adjustable limits. A
maximum of 100 events can be captured. The sample rate is 20kS/s.
 Waveform display
Cursor and Zoom can be used to investigate details of captured waveforms.
Available function keys:
F2 Playback captured Transients waveforms.
F3 Access to Cursor.
F4 Selection of Zoom or Cursor.
F5 Switch between RUN and HOLD.
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