Supply Harmonic Analysis (Frame E Heavy Duty)
Assumptions: 10000A short circuit supply capability
to 73H supply impedance at 400V
value of the fundamental voltage of the supply transformer. The
results conform to stage 1, stage 2 and stage 3 of the
Engineering Recommendation G.5/3 September 1976,
Classification 'C': Limits for Harmonics in the UK Electricity
Industry.
Fundamental
230
Voltage (V)
Inverter Type
Motor Power
22.0
(kW)
Typical
Motor
90
Efficiency %
Harmonic
No.
1
76.7
3
0.0
5
42.4
7
22.2
9
0.0
11
4.4
13
4.3
15
0.0
17
2.0
19
1.7
21
0.0
23
1.2
25
0.9
27
0.0
29
0.7
31
0.5
33
0.0
35
0.5
37
0.4
39
0.0
40
0.0
41
0.4
42
0.0
43
0.3
44
0.0
45
0.0
46
0.0
47
0.3
48
0.0
49
0.2
50
0.0
Total RMS
90.7
Current (A)
THD (V) %
1.65
650G AC Drive
where Q
is the rated rms
1n
400
Three Phase
30.0
37.0
90
90
RMS Current (A)
52.3
62.8
0.0
0.0
35.3
42.2
22.9
27.2
0.0
0.0
4.5
5.2
3.2
3.8
0.0
0.0
2.3
2.7
1.4
1.6
0.0
0.0
1.3
1.5
0.9
1.1
0.0
0.0
0.7
0.8
0.6
0.7
0.0
0.0
0.4
0.5
0.4
0.5
0.0
0.0
0.0
0.0
0.3
0.3
0.0
0.0
0.3
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.2
0.0
0.0
0.2
0.2
0.0
0.0
67.5
80.8
2.58
3.70
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Technical Specifications
, equivalent
THD(V) x 100
45.0
30.0
90
90
75.5
41.1
0.0
0.1
48.4
29.3
29.4
20.2
0.0
0.0
4.9
5.3
4.9
2.7
0.0
0.0
2.5
2.5
1.9
1.6
0.0
0.0
1.5
1.1
1.0
1.0
0.0
0.0
0.9
0.6
0.7
0.6
0.0
0.0
0.6
0.4
0.5
0.4
0.0
0.0
0.0
0.0
0.4
0.3
0.0
0.0
0.3
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.3
0.2
0.0
0.0
0.3
0.2
0.0
0.0
94.7
54.8
3.41
1.31
9-25
h 2
Q
h 2
%
h 40
Q
1n
500
37.0
45.0
90
90
52.4
64.4
0.1
0.0
36.7
43.1
24.8
27.6
0.0
0.0
5.9
5.5
3.4
4.3
0.0
0.0
2.9
2.9
1.8
1.8
0.0
0.0
1.4
1.6
1.2
1.1
0.0
0.0
0.8
0.9
0.7
0.8
0.0
0.0
0.5
0.6
0.5
0.5
0.0
0.0
0.0
0.0
0.4
0.4
0.0
0.0
0.3
0.4
0.0
0.0
0.0
0.0
0.0
0.0
0.3
0.3
0.0
0.0
0.2
0.3
0.0
0.0
69.1
82.6
1.61
1.82