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9-16
Technical Specifications
650V AC Drive
Supply Harmonic Analysis (Frame C Heavy Duty)
Assumptions: 10000A short circuit supply capability
, equivalent
to 73
µ
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
90
Harmonic
No.
RMS Current (A)
1
18.5
23.8
10.1
13.0
18.6
25.1
9.7
17.8
18.6
19.5
3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
5
13.0
18.0
7.9
10.3
14.2
19.9
7.7
13.9
14.4
15.9
7
8.9
13.3
6.1
8.1
10.8
15.6
6.0
10.7
11.0
12.8
9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
11
2.2
4.6
2.4
3.6
4.0
6.8
2.6
4.3
4.3
6.2
13
1.2
2.0
1.2
1.9
1.8
3.5
1.4
2.1
2.1
3.5
15
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
17
1.0
1.5
0.6
0.8
1.2
1.5
0.6
1.2
1.2
1.2
19
0.6
1.3
0.6
0.9
1.1
1.5
0.6
1.1
1.1
1.3
21
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
23
0.5
0.6
0.3
0.5
0.5
0.9
0.3
0.6
0.6
0.9
25
0.4
0.6
0.3
0.3
0.5
0.6
0.3
0.5
0.5
0.6
27
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
29
0.3
0.4
0.2
0.3
0.4
0.6
0.2
0.4
0.4
0.5
31
0.3
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
0.0
35
0.2
0.3
0.1
0.2
0.2
0.3
0.1
0.2
0.3
0.3
37
0.2
0.3
0.1
0.2
0.2
0.3
0.1
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
0.0
40
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
41
0.1
0.2
0.1
0.1
0.2
0.2
0.1
0.2
0.2
0.2
42
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
43
0.1
0.2
0.1
0.1
0.1
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
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
0.1
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
0.0
49
0.1
0.1
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
0.0
Total RMS
Current (A)
24.5
33.2
14.5
18.9
26.2
36.5
14.2
25.5
26.5
29.2
THD (V) %
0.57
0.86
0.40
0.54
0.70
1.03
0.40
0.70
0.72
0.87