Technical Specifications
9-17
650G AC Drive
Supply Harmonic Analysis Frames 2 & 3 (400V filtered)
Assumptions:
(Short circuit fault to Neutral)
5kA short circuit supply capability at 230V 1
, equivalent to 146
H supply impedance
7.5kA short circuit supply capability at 230V 3
, equivalent to 56
H supply impedance
10
kA short circuit supply capability at 400V 3
, equivalent to 73
H supply impedance
THD(V) x 100
Q
Q
h2
1n
h 40
h 2
%
where Q
1n
is the rated rms value of the fundamental voltage of the supply transformer.
The results conform to stage 1 and stage 2 of the Engineering Recommendation G.5/4 February 2001,
Classification ‘C’: Limits for Harmonics in the UK Electricity Industry
.
Drive Type
650G
Motor Power (kW)
0.37
0.55
0.75
1.1
1.5
2.2
3.0
4.0
5.5
7.5
Fundamental
Voltage
(V) 400 400 400 400 400 400 400 400 400 400
Typical
Motor
Efficiency
%
85 85 85 85 85 85 85 85 85 85
Harmonic No.
RMS Current (A)
1
0.6 1.0 1.3 1.9 2.6 3.8 5.2 6.9 9.5 12.9
3
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
5
0.6 0.9 1.2 1.8 2.4 3.5 4.7 6.2 8.3 11.1
7
0.6 0.9 1.2 1.7 2.3 3.3 4.3 5.5 7.3 9.5
9
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
11
0.5 0.8 1.0 1.5 1.9 2.6 3.3 3.9 4.8 5.7
13
0.0 0.7 0.9 1.3 1.6 2.2 2.7 3.0 3.5 3.9
15
0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
17
0.4 0.6 0.7 1.0 1.1 1.4 1.6 1.5 1.4 1.2
19
0.0 0.5 0.6 0.9 0.9 1.1 1.1 0.9 0.8 0.7
21
0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
23
0.2 0.3 0.4 0.6 0.5 0.5 0.4 0.3 0.5 0.7
25
0.0 0.3 0.3 0.4 0.3 0.3 0.2 0.4 0.5 0.7
27
0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
29
0.1 0.2 0.2 0.2 0.1 0.2 0.3 0.4 0.4 0.4
31
0.0 0.1 0.1 0.1 0.1 0.2 0.3 0.3 0.3 0.3
33
0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
35
0.0 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.2 0.3
37
0.0 0.1 0.1 0.1 0.1 0.2 0.1 0.1 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
Total RMS Current (A)
1.4
2.1
2.8
4.0
5.1
7.2
9.5
12.0
15.8
20.8
THD (V) %
0.1561 0.2158 0.2776 0.3859 0.4393 0.5745 0.6994 0.8111 0.9899 1.2110
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