Teledyne LeCroy Power Analyzer Package - Manual (Page 25)

Operator's Manual
Line Power Analysis
Line Power Analysis Preliminary Setup
The Line Power Analysis section of PMA2 provides you with tools to measure 50 and 60 Hz line voltage
(Vrms), line current Irms), Apparent Power (VA), Real Power (Watts), and Power Factor (cos θ). It also
enables you to evaluate harmonic currents injected into the power line. Harmonic measurements are
made in accordance with the requirements of standard EN 61000-3-2, Harmonic Current Emissions. Tele-
dyne LeCroy encourages you to refer to the latest version of EN 61000-3-2 for full definitions and limits set
forth by the standard. The information here is abstracted for your convenience.
Test Circuit Setup
In the examples in this section, Channel 2 is used for voltage and Channel 3 is used for current, but any
channel could be used for voltage or current. In the case of 3-phase systems, multiple voltage and/or cur-
rent channels can be set up before analysis is started.
The current waveform polarity must match that of the voltage waveform. Make sure your current probe
is connected so that this is the case.
Trigger Setup
Triggers for Line Power tests can be either the voltage or current waveforms.
Set Up Line Power Analysis Source Channels
This procedure selects the voltage and current source channels and makes any necessary offset or
deskew adjustments to ensure measurement accuracy.
If you have just completed the preliminary deskew procedure, begin at Step 6.
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