MI 2893 / MI 2892 / MI 2885 Recording Practice and Instrument Connection
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4 Recording Practice and Instrument Connection
In following section recommended measurement and recording practice is described.
4.1 Measurement campaign
Power quality measurements are specific type of measurements, which can last many days, and mostly
they are performed only once. Usually recording campaign is performed to:
Statistically analyse some points in the network.
Troubleshoot malfunctioning device or machine.
Since measurements are mostly performed only once, it is very important to properly set measuring
equipment. Measuring with wrong settings can lead to false or useless measurement results. Therefore,
instrument and user should be fully prepared before measurement begins.
In this section recommended recorder procedure is shown. We recommend to strictly follow guidelines
in order to avoid common problems and measurement mistakes. Figure below shortly summarizes
recommended measurement practice. Each step is then described in details.
Note: PC software PowerView v3.0 has the ability to correct (after measurement is done):
wrong real-time settings,
wrong current and voltage scaling factors,
voltage unbalance.
False instrument connection (messed wiring, opposite clamp direction), can’t be fixed afterwards.
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