9-26
Technical Specifications
650G AC Drive
Supply Harmonic Analysis (Frame F Normal Duty)
Assumptions: 10000A short circuit supply capability
, equivalent
to 73
H supply impedance at 400V
where Q
1n
is the rated rms
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.
THD(V) x 100
Q
Q
h2
1n
h 40
h 2
%
Fundamental
Voltage (V)
230 400 500
Inverter Type
Three Phase
Motor Power
(kW)
30.0 37.0 45.0 55.0 75.0 90.0 90.0
(150HP)
55.0 75.0 90.0
Typical
Motor
Efficiency %
90 90 90 90 90 90 90 90 90 90
Harmonic
No.
RMS Current (A)
1
118.2 140.1 175.5 132.0 151.6 184.4 156.6 104.8 126.7 152.5
3
0.1 0.0 0.0 0.0 0.2 0.1 0.0 0.1 0.1 0.1
5
40.9 45.9 52.3 52.6 57.8 64.7 58.9 48.5 54.5 60.5
7
11.5 11.8 12.3 18.8 19.1 18.6 19.0 21.9 22.2 21.7
9
0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0
11
7.6 8.5 9.5 9.0 10.1
11.5
10.3 7.5 8.9 10.5
13
3.5 4.2 5.3 4.2 4.6 5.4 4.7 4.5 4.7 4.9
15
0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0
17
3.0 3.2 3.1 3.8 4.2 4.5 4.3 3.3 3.9 4.5
19
2.1 2.4 2.8 2.3 2.6 3.2 2.7 2.0 2.2 2.6
21
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
23
1.4 1.4 1.4 2.0 2.1 2.0 2.1 1.9 2.1 2.3
25
1.3 1.4 1.3 1.5 1.7 1.9 1.7 1.2 1.4 1.7
27
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
29
0.7 0.8 1.0 1.1 1.1 1.1 1.1 1.1 1.2 1.3
31
0.7 0.7 0.8 1.0 1.1 1.1 1.1 0.8 1.0 1.1
33
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
35
0.5 0.6 0.7 0.6 0.7 0.8 0.7 0.7 0.7 0.8
37
0.5 0.5 0.6 0.7 0.7 0.7 0.7 0.6 0.7 0.8
39
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
40
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
41
0.4 0.4 0.4 0.4 0.5 0.6 0.5 0.5 0.5 0.5
42
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
43
0.3 0.4 0.4 0.4 0.5 0.5 0.4 0.4 0.5 0.5
44
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
45
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
46
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
47
0.3 0.3 0.3 0.3 0.4 0.4 0.4 0.3 0.3 0.4
48
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
49
0.3 0.3 0.3 0.3 0.4 0.4 0.3 0.3 0.3 0.3
50
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Total RMS
Current (A)
125.9 148.2 183.9 143.8 163.8 196.8 168.9 118.0 140.2 166.0
THD (V) %
1.49 1.66 1.87 1.95 2.13 2.34 2.15 1.87 2.06 2.25
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