User Manual – Rev BE AMETEK Programmable Power
MX Series 117
POWER In both AC and DC mode, this value is the real rms.
power consumed by the load.
MEASUREMENT 2
VA POWER In AC or AC+DC mode, this value is the apparent rms.
power consumed by the load. In DC mode, this value is
always the same as the POWER readout.
PEAK CURR This readout reflects the peak current value detected at
the output. To measure inrush current for a unit under
test, open the output relay and reset the peak current
value using the PEAK CURR RESET entry. Then program
the output voltage and frequency and turn on the
output relay. The peak current measurement will
continuously track the maximum current value detected
until reset.
POWER FACTOR This readout shows the power factor of the load.
CREST FACTOR This readout displays the ratio between peak current
and rms current.
MEASUREMENT 3 [3Pi controller only]
VOLT THD This readout displays the total voltage distortion for the
selected phase. The distortion calculation is based on
the H2 through H50 with the fundamental voltage (H1)
in the denominator. Note that other common definitions
of THD use the RMS value of the voltage as the
denominator. This may result in different readings
between instruments depending on the implementation
chosen. The mode used by the power source is
selectable over the bus.
CURR THD This readout displays the total current distortion for the
selected phase. The distortion calculation is based on
the H2 through H50 with the fundamental current (H1)
in the denominator. Note that other common definitions
of THD use the RMS value of the current as the
denominator. This may result in different readings
between instruments depending on the implementation
chosen. The mode used by the power source is
selectable over the bus.
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