3-14
Harmonic Options, continued
Harmonic/
Interharmonic
data plots
(continued)
Harmonic Computation for 60 Hz
Properties under
Graph Units
pertain to the way the graph (not the list) is labelled. The
vertical scale can be in
Percent
or
Engineering
units, and
Scale to Fund
(full scale)
can be
chosen to be the fundamental at 100% or the largest component. The
engineering unit for voltage is volts and for current is amperes. The horizontal axis can
be in
Hz
or
Harmonic Number
.
0.0%
0.5%
1.0%
1.5%
2.0%
2.5%
3.0%
… 160
165
170
175 180
185
190
195
200
205 210
215
220
225
230 235
240
245
250
…
3rd harmonic
+
2 adjacent
interharmonics
4th harmonic
+
2 adjacent
interharmonics
measurement scale for
frequency (x axis) and
amplitude (y axis) of
harmonics
full scale graph relative to
fundamental frequency
harmonic data display
MARK236
www.
.com
1.800.561.8187
Содержание PowerGuide 4400
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