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Pre-operation instructions
Table 5 Rated Capacity and Outgoing Harmonic Current during Inverter Run
Rated Current
Applied
[A]
Motor
(kW)
200V
400V
0.4
1.61
0.81
0.75
2.74
1.37
1.5
5.50
2.75
2.2
7.93
3.96
3.7
13.0
6.50
5.5
19.1
9.55
7.5
25.6
12.8
11
36.9
18.5
15
49.8
24.9
18.5
61.4
30.7
22
73.1
36.6
30
98.0
49.0
37
121
60.4
45
147
73.5
55
180
89.9
Rated Current
Applied
[A]
Motor
(kW)
200V
400V
75
245
123
90
293
147
110
357
179
132
216
160
258
220
355
250
403
280
450
315
506
355
571
400
643
450
723
500
804
560
900
(c)Deciding whether to take harmonic suppression measures
When the outgoing harmonic current > the maximum value per 1kW contract contract kW, a harmonic suppression
measures are required.
(d) Harmonic suppression measures
No.
Item
Reactor
1
(FR-HAL, FR-HEL)
High power factor
2
converter
(FR-HC2)
Power
3
factor improving static
capacitor
Multi-phase operation
4
with transformers
Passive filter
5
(AC filter)
6
Active filter
4
Fundamental
Rated
Wave Current
Capacity
Converted from
(kVA)
6.6kV (mA)
49
0.57
83
0.97
167
1.95
240
2.81
394
4.61
579
6.77
776
9.07
1121
13.1
1509
17.6
1860
21.8
2220
25.9
2970
34.7
3660
42.8
4450
52.1
5450
63.7
Fundamental
Rated
Wave Current
Capacity
Converted from
(kVA)
6.6kV (mA)
7455
87.2
8909
104
10848
127
13091
153
15636
183
21515
252
24424
286
27273
319
30667
359
34606
405
38970
456
43818
512
48727
570
54545
638
Harmonic current is suppressed by installing an AC reactor (FR-HAL) in the AC input side of the inverter
or a DC reactor (FR-HEL) in the DC bus line of the inverter, or by installing both.
FR-HC2 is designed to switch ON/OFF the converter circuit to convert an input current waveform into a
sine wave, suppressing the harmonic current considerably. The converter (FR-HC2) is used with the
standard-equipped peripheral devices and accessories.
Using the power factor improving static capacitor with a series reactor has an effect of absorbing
harmonic currents.
Using two transformers with a phase angle difference of 30 as in
provides an effect corresponding to 12 pulses and reduces low-degree harmonic currents.
A capacitor and a reactor are used together to reduce impedance at specific frequencies, producing a
great effect of absorbing harmonic currents.
This filter detects the current of the circuit, where harmonic current is generated, and generates the
harmonic current equivalent to the difference between that current and a fundamental wave current.
By doing so, the harmonic current at where it was detected can be suppressed, and great absorption of
harmonic current can be expected.
Harmonic Current Converted from 6.6kV (mA)
(No reactor, 100% operation ratio)
5th
7th
11th
31.85
20.09
4.165
3.773
53.95
34.03
7.055
6.391
108.6
68.47
14.20
12.86
156.0
98.40
20.40
18.48
257.1
161.5
33.49
30.34
376.1
237.4
49.22
44.58
504.4
318.2
65.96
59.75
728.7
459.6
95.29
86.32
980.9
618.7
128.3
1209
762.6
158.1
143.2
1443
910.2
188.7
170.9
1931
1218
252.5
228.7
2379
1501
311.1
281.8
2893
1825
378.3
342.7
3543
2235
463.3
419.7
Harmonic Current Converted from 6.6kV (mA)
(With a DC reactor, 100% operation ratio)
5th
7th
11th
2237
969
626
2673
1158
748
3254
1410
911
3927
1702
1100
4691
2033
1313
6455
2797
1807
7327
3175
2052
8182
3545
2291
9200
3987
2576
10382
4499
2907
11691
5066
3274
13146
5696
3681
14618
6335
4093
16364
7091
4582
Description
13th
17th
19th
23rd
2.107
1.519
1.274
3.569
2.573
2.158
7.181
5.177
4.342
10.32
7.440
6.240
16.94
12.21
10.24
24.90
17.95
15.05
33.37
24.06
20.18
48.20
34.75
29.15
116.2
64.89
46.78
39.24
79.98
57.66
48.36
95.46
68.82
57.72
127.7
92.07
77.22
157.4
113.5
95.16
191.4
138.0
115.7
234.4
169.0
141.7
13th
17th
19th
23rd
373
350
239
445
419
285
542
510
347
655
615
419
782
735
500
1076
1011
688
1221
1148
782
1364
1282
873
1533
1441
981
1730
1627
1107
1038
1949
1832
1247
1169
2191
2060
1402
1315
2436
2290
1559
1462
2727
2564
1746
1636
-
and
-
combinations
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
224
164
267
196
325
239
393
288
469
344
645
473
733
537
818
600
920
675
761
857
964
1072
1200
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