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Power Quality Analyzer Model 3945-B
45
5.2.4 Harmonic Analysis in Expert Mode
Press on the button to select “-.+” and then either the “V” or “A” variable
function button “V” or “A”.
Exampleofatypicaldisplay:
07/25/02
02
05
08
11
14
17
20
23
03
06
09
12
15
18
21
24
04
07
10
13
16
19
22
25
59.98Hz 10:26 100
%
.+
3L
L1
L2
L3
7.3
%
0
15.5
%
4.8
%
V A
Figure 5-11
• First column: The harmonics inducing a negative sequence are displayed.
• Second column: Thoseinducingazerosequence(triplensaddedintotheneu-
tral)aredisplayed.
• Third column: Those inducing a positive sequence are displayed.
Harmoniccontentisusefultoevaluatetheinuenceofharmonicsthatcauseheat-
ing of the neutral or on rotating machines.