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Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual Page 125

Fr-a800 series.
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Fundamental
Applicable
wave current (A)
motor (kW)
200 V
75
245
90
293
110
357
132
160
220
250
280
315
355
400
450
500
560
630
 Determining if a countermeasure is required
A countermeasure for harmonics is required if the following condition is satisfied: outgoing harmonic current > maximum value
per 1 kW contract power × contract power.
 Harmonic suppression techniques
No.
Item
Reactor installation
1
(FRHAL or FR-HEL)
High power factor
2
converter (FR-HC2)
Installation of power factor
3
improving capacitor
Transformer multi-phase
4
operation
5
Passive filter (AC filter)
Active filter
6
(Active filter)
124
3. PRECAUTIONS FOR USE OF THE INVERTER
3.2 Power supply harmonics
Fundamental
Rated
wave current
capacity
converted from
(kVA)
400 V
6.6 kV (mA)
123
7455
87.2
147
8909
104
179
10848
127
216
13091
153
258
15636
183
355
21515
252
403
24424
286
450
27273
319
506
30667
359
571
34606
405
643
38970
456
723
43818
512
804
48727
570
900
54545
638
1013
61394
718
Install an AC reactor (FR-HAL) on the AC side of the inverter or a DC reactor (FR-HEL) on its DC side,
or install both to suppress outgoing harmonic currents.
This converter trims the current waveform to be a sine waveform by switching the rectifier circuit
(converter module) with transistors. Doing so suppresses the generated harmonic amount significantly.
Connect it to the DC area of an inverter. Use the high power factor converter (FR-HC2) with the
accessories that come as standard.
When used with a reactor connected in series, the power factor improving correction capacitor can
absorb harmonic currents.
Use two transformers with a phase angle difference of 30° in combinations of
provide an effect corresponding to 12 pulses, reducing low-degree harmonic currents.
A capacitor and a reactor are used together to reduce impedances at specific frequencies. Harmonic
currents are expected to be absorbed greatly by using this technique.
This filter detects the current in a circuit generating a harmonic current and generates a harmonic current
equivalent to a difference between that current and a fundamental wave current to suppress the
harmonic current at the detection point. Harmonic currents are expected to be absorbed greatly by using
this technique.
Outgoing harmonic current converted from 6.6 kV (mA) (with a DC reactor,
100% operation ratio)
5th
7th
11th
13th
2237
969
626
373
2673
1158
748
445
3254
1410
911
542
3927
1702
1100
655
4691
2033
1313
782
6455
2797
1807
1076
7327
3175
2052
1221
8182
3545
2291
1364
9200
3987
2576
1533
10382
4499
2907
1730
11691
5066
3274
1949
13146
5696
3681
2191
14618
6335
4093
2436
16364
7091
4582
2727
18418
7981
5157
3070
Description
17th
19th
23rd
25th
350
239
224
164
419
285
267
196
510
347
325
239
615
419
393
288
735
500
469
344
1011
688
645
473
1148
782
733
537
1282
873
818
600
1441
981
920
675
1627
1107
1038
761
1832
1247
1169
857
2060
1402
1315
964
2290
1559
1462
1072
2564
1746
1636
1200
2886
1965
1842
1351
to ∆ and ∆ to ∆, to

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This manual is also suitable for:

Fr-a820-00167 (2.2k)Fr-a820-00046-gf (0.4k)Fr-a820-00250 (3.7k)Fr-a820-00105-gf (1.5k)Fr-a820-00077 (0.75k)Fr-a820-00250-gf (3.7k) ... Show all

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