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Assumptions: 5000A short circuit supply capability, equivalent to 146
µ
H supply impedance;
constant torque load.
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.
584S Type 4 conforms to stage 1, 2 and 3 of the Engineering Recommendation G.5/3 September
1976, Classification ‘C’: Limits for Harmonics in the UK Electricity Industry.
Type 5 and Type 6 conform to stage 2 and 3; Type 7 conform to stage 2.
584SV Type
4
4
4
4
4
4
4
5
5
Fundamental Voltage (V)
400
400
400
400
400
400
400
400
400
Typical Motor Efficiency (%)
75
77
80
84
86
88
89
91
92
Motor Power (kW)
0.75
1.1
1.5
2.2
4.0
5.5
7.5
11.0
15.0
Harmonic no.
RMS Current (A)
1
1.7
2.3
2.9
4.1
7.0
9.4
12.2
18.4
24.6
5
1.6
2.1
2.7
3.7
6.3
6.8
8.9
12.3
13.3
7
1.5
1.9
2.5
3.4
5.6
4.8
6.3
8.1
8.4
11
1.2
1.5
1.8
2.4
3.9
1.3
1.8
1.7
1.8
13
1.0
1.3
1.5
1.9
2.9
0.6
0.8
1.3
1.6
17
0.7
0.8
0.9
1.0
1.4
0.5
0.7
0.9
1.0
19
0.5
0.6
0.6
0.6
0.8
0.4
0.5
0.6
0.8
23
0.2
0.21
0.2
0.1
0.3
0.2
0.3
0.4
0.6
25
0.1
0.11
0.1
0.1
0.3
0.2
0.3
0.4
0.5
29
0.1
0.1
0.1
0.2
0.3
0.1
0.1
0.2
0.4
31
0.1
0.1
0.1
0.1
0.2
0.1
0.1
0.3
0.3
35
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.3
37
0.1
0.1
0.1
0.0
0.1
0.0
0.1
0.2
0.2
Total I RMS
3.0
4.5
5.5
7.5
12.0
13.0
17.0
24.0
30.0
Thd V %
0.5
0.7
0.8
1.0
1.7
1.0
1.4
1.7
2.0
584SV Type
6
6
6
6
7
7
7
Fundamental Voltage (V)
400
400
400
400
400
400
400
Typical Motor Efficiency (%)
93
93
93
91
92
92
92
Motor Power (kW)
18
22
30
37
45
55
75
Harmonic no.
Harmonic Current (A)
1
29.7
35.8
48.4
60.6
73.0
91.8
126.7
5
16.7
17.9
20.3
24.5
29.7
37.6
42.1
7
10.4
10.5
10.4
11.7
13.7
16.7
14.8
11
2.3
2.8
3.7
4.7
5.6
6.9
9.3
13
2.1
2.2
2.4
2.8
3.2
3.8
4.7
17
1.2
1.5
1.9
2.3
2.7
3.2
4.2
19
0.9
1.0
1.2
1.5
1.6
1.9
2.8
23
0.7
0.9
1.2
1.4
1.6
1.8
2.2
25
0.5
0.6
0.8
1.0
1.1
1.3
1.7
29
0.5
0.6
0.8
0.9
1.0
1.1
1.1
31
0.3
0.5
0.6
0.7
0.7
0.9
1.1
35
0.4
0.4
0.5
0.6
0.6
0.7
0.7
37
0.3
0.4
0.4
0.5
0.5
0.6
0.6
Total I RMS
36.0
42.0
54.0
67.0
81.0
102.0
135.0
Thd V %
2.6
2.8
3.1
3.8
4.3
5.4
5.9
Summary of Contents for 584SV Series
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