9-22
Technical Specifications
650V AC Drive
Supply Harmonic Analysis (Frame F 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)
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
94.7
118.2
140.1
99.2
132.1
152.1
156.6
79.7
104.8
126.7
3
0.0
0.0
0.0
0.1
0.1
0.1
0.0
0.0
0.1
0.1
5
35.9
41.6
45.9
44.9
53.4
57.8
58.9
42.4
49.3
54.5
7
11.9
11.9
11.8
19.5
19.5
19.1
19.0
22.1
22.5
22.2
9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.1
0.0
11
6.5
7.7
8.5
6.9
9.0
10.0
10.3
5.7
7.5
8.9
13
2.9
3.5
4.2
4.0
4.3
4.6
4.7
4.6
4.6
4.7
15
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
17
2.7
3.1
3.2
3.1
3.9
4.2
4.3
2.6
3.3
3.9
19
1.6
2.1
2.4
1.8
2.2
2.6
2.7
1.8
2.0
2.2
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
1.7
2.0
2.1
2.1
1.5
1.9
2.1
25
1.1
1.3
1.4
1.1
1.5
1.7
1.7
1.0
1.2
1.4
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
0.8
1.0
1.1
1.1
1.1
0.9
1.1
1.2
31
0.7
0.8
0.7
0.8
1.0
1.1
1.1
0.6
0.8
1.0
33
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
35
0.4
0.5
0.6
0.6
0.6
0.7
0.7
0.6
0.7
0.7
37
0.4
0.5
0.5
0.6
0.6
0.7
0.7
0.4
0.6
0.7
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
0.3
0.4
0.4
0.4
0.4
0.5
0.5
0.4
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
0.3
0.4
0.4
0.4
0.4
0.4
0.3
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
0.2
0.3
0.3
0.3
0.3
0.4
0.4
0.3
0.3
0.3
48
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
49
0.2
0.3
0.3
0.3
0.3
0.3
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)
102.3
126.2
148.2
110.9
144.3
164.3
168.9
93.3
118.4
140.2
THD (V) %
1.33
1.52
1.66
1.71
1.98
2.12
2.15
1.67
1.90
2.06
