9-20
Technical Specifications
650G AC Drive
Supply Harmonic Analysis (Frame C 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)
5.5 7.5 5.5 7.5 11.0 15.0 5.5 7.5 11.0 15.0
Typical
Motor
Efficiency %
90
90 90 90 90 90 90 90 90
Harmonic
No.
RMS Current (A)
1
23.7
13.3 18.2 25.1 30.7 14.2 16.2 23.1 24.3
3
0.0
0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1
5
15.9
10.1 14.0 18.6 23.9 10.8 12.7 17.5 19.4
7
10.4
7.5 10.6 13.5 18.4 8.2 9.9 13.0 15.3
9
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
11
2.1
2.7 4.0 4.3 7.3 3.0 4.2 4.6 6.8
13
1.6
1.2 1.8 1.8 3.4 1.4 2.1 2.0 3.6
15
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
17
1.1
0.8 1.2 1.5 1.8 0.9 1.1 1.5 1.5
19
0.7
0.7 1.0 1.2 1.8 0.8 1.1 1.3 1.6
21
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
23
0.6
0.3 0.5 0.6 0.8 0.4 0.5 0.6 0.9
25
0.5
0.3 0.5 0.6 0.7 0.4 0.4 0.6 0.7
27
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
29
0.3
0.2 0.4 0.4 0.7 0.3 0.4 0.4 0.6
31
0.3
0.2 0.3 0.3 0.5 0.2 0.3 0.3 0.5
33
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
35
0.2
0.2 0.2 0.3 0.4 0.2 0.2 0.3 0.3
37
0.3
0.1 0.2 0.2 0.4 0.2 0.2 0.2 0.3
39
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
41
0.1
0.1 0.1 0.2 0.2 0.1 0.2 0.2 0.3
42
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
43
0.2
0.1 0.1 0.2 0.2 0.1 0.1 0.2 0.2
44
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
46
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
47
0.1
0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.2
48
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
49
0.2
0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.2
50
0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Total RMS
Current (A)
30.6
18.6 25.7 34.4 43.9 19.9 23.4 32.2 35.6
THD (V) %
0.68
0.4848 0.6858 0.8634 1.1883 0.5286 0.6545 0.8396 1.0236
www.comoso.com