Mitsubishi Electric FR-A820-00046 Instruction Manual page 158

Power supply harmonics
● Calculation of outgoing harmonic current
Outgoing harmonic current
= fundamental wave current (value converted from received power voltage)
× operation ratio × harmonic content
– Operation ratio:
– Harmonic content: Found in tab. 3-10.
Applica-
ble motor
[kW]
0.4
0.75
1.5
2.2
3.7
5.5
7.5
11
15
18.5
22
30
37
45
55
Tab. 3-11:
Applica-
ble motor
[kW]
75
90
110
132
160
220
250
280
315
355
400
450
500
560
630
Tab. 3-12:
3 - 14
Operation ratio = actual load factor × operation time ratio during 30 minutes
Fundamental Fundamen-
wave current tal wave
(A) current con-
verted from
200 V 400 V
6.6 kV [mA]
1.61 0.81 49
2.74 1.37 83
5.50 2.75 167
7.93 3.96 240
13.0 6.50 394
19.1 9.55 579
25.6 12.8 776
36.9 18.5 1121
49.8 24.9 1509
61.4 30.7 1860
73.1 36.6 2220
98.0 49.0 2970
121 60.4 3660
147 73.5 4450
180 89.9 5450
Rated capacities and outgoing harmonic currents (no reactor) of inverter-driven motors
Fundamental Fundamen-
wave current tal wave
(A) current con-
verted from
200 V 400 V
6.6 kV [mA]
245 123 7455
293 147 8909
357 179 10848
⎯
216 13091
⎯
258 15636
⎯
355 21515
⎯
403 24424
⎯
450 27273
⎯
506 30667
⎯
571 34606
⎯
643 38970s
⎯
723 43818
⎯
804 48727
⎯
900 54545
⎯
1013 61394
Rated capacities and outgoing harmonic currents (with DC reactor) of inverter-driven
motors
Outgoing harmonic current converted from 6.6 kV [mA]
Rated
(No reactor, 100% operation ratio)
capacity
[kVA]
5th 7th 11th
0.57 31.85 20.09 4.165
0.97 53.95 34.03 7.055
1.95 108.6 68.47 14.20
2.81 156.0 98.40 20.40
4.61 257.1 161.5 33.49
6.77 376.1 237.4 49.22
9.07 504.4 318.2 65.96
13.1 728.7 459.6 95.29
17.6 980.9 618.7 128.3
21.8 1209 762.6 158.1
25.9 1443 910.2 188.7
34.7 1931 1218 252.5
42.8 2379 1501 311.1
52.1 2893 1825 378.3
63.7 3543 2235 463.3
Outgoing harmonic current converted from 6.6 kV [mA]
Rated
(With a DC reactor, 100% operation ratio)
capacity
[kVA]
5th 7th 11th
87.2 2237 969 626
104 2673 1158 748
127 3254 1410 911
153 3927 1702 1100
183 4691 2033 1313
252 6455 2797 1807
286 7327 3175 2052
319 8182 3545 2291
359 9200 3987 2576
405 10382 4499 2907
456 11691 5066 3274
512 13146 5696 3681
570 14618 6335 4093
638 16364 7091 4582
718 18418 7981 5157
Precautions for use of the inverter
13th 17th 19th 23rd
3.773 2.107 1.519 1.274
6.391 3.569 2.573 2.158
12.86 7.181 5.177 4.342
18.48 10.32 7.440 6.240
30.34 16.94 12.21 10.24
44.58 24.90 17.95 15.05
59.75 33.37 24.06 20.18
86.32 48.20 34.75 29.15
116.2 64.89 46.78 39.24
143.2 79.98 57.66 48.36
170.9 95.46 68.82 57.72
228.7 127.7 92.07 77.22
281.8 157.4 113.5 95.16
342.7 191.4 138.0 115.7
419.7 234.4 169.0 141.7
13th 17th 19th 23rd
373 350 239 224
445 419 285 267
542 510 347 325
655 615 419 393
782 735 500 469
1076 1011 688 645
1221 1148 782 733
1364 1282 873 818
1533 1441 981 920
1730 1627 1107 1038
1949 1832 1247 1169
2191 2060 1402 1315
2436 2290 1559 1462
2727 2564 1746 1636
3070 2886 1965 1842
25th
0.882
1.494
3.006
4.320
7.092
10.42
13.97
20.18
27.16
33.48
39.96
53.46
65.88
80.10
98.10
25th
164
196
239
288
344
473
537
600
675
761
857
964
1072
1200
1351