Mitsubishi Electric FR-A800 Instruction Manual page 77

Power supply harmonics
• Harmonic content (Values of the fundamental current is 100%)
Reactor
Used (DC side)
Used (AC, DC sides)
• Calculation of equivalent capacity P0 of harmonic generating equipment
"Equivalent capacity" is the capacity of a 6-pulse converter converted from the capacity of consumer's harmonic generating
equipment and is calculated by the following equation: If the sum of equivalent capacities is higher than the limit (Refer to
page 75), harmonics must be calculated with the following procedure:
P0 = ∑ (Ki  Pi) [kVA]
Ki: Conversion coefficient (Refer to
Pi: Rated capacity of harmonic generating equipment
i: Number indicating the conversion circuit type
• Calculation of outgoing harmonic current
Outgoing harmonic current = fundamental wave current (value converted from received power voltage)  operation ratio 
harmonic content
• Operation ratio: Operation ratio = actual load factor  operation time ratio during 30 minutes
• Harmonic content: Refer to
• Rated capacities and outgoing harmonic currents of inverter-driven motors
Rated
current (A)
Applicable
motor (kW)
400 V
0.4 0.81
0.75 1.37
1.5 2.75
2.2 3.96
3.7 6.50
5.5 9.55
7.5 12.8
11 18.5
15 24.9
18.5 30.7
22 36.6
30 49.0
37 60.4
45 73.5
55 89.9
75 123
90 147
110 179
132 216
160 258
220 355
250 403
280 450
315 506
355 571
400 643
450 723
500 804
560 900
630 1013
76
PRECAUTIONS FOR USE OF THE INVERTER
5th 7th
30 13 8.4
28 9.1 7.2
page 75)
page 76.
Fundamental
wave current Rated
converted capacity
from 6.6 kV (kVA)
(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
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
61394 718
11th 13th 17th
5.0 4.7
4.1 3.2

[kVA]

Outgoing harmonic current converted from 6.6 kV (mA)
(With a DC reactor, 100% operation ratio)
5th 7th 11th
14.7 6.37 4.116
24.9 10.79 6.972
50.1 21.71 14.03
72 31.20 20.16
118.2 51.22 33.10
173.7 75.27 48.64
232.8 100.9 65.18
336.3 145.7 94.16
452.7 196.2 126.8
558 241.8 156.2
666 288.6 186.5
891 386.1 249.5
1098 475.8 307.4
1335 578.5 373.8
1635 708.5 457.8
2237 969.2 626.2
2673 1158 748.4
3254 1410 911.2
3927 1702 1100
4691 2033 1313
6455 2797 1807
7327 3175 2052
8182 3545 2291
9200 3987 2576
10382 4499 2907
11691 5066 3273
13145 5696 3681
14618 6335 4093
16363 7091 4582
18418 7981 5157
19th 23rd
3.2 3.0
2.4 1.6
Rated capacity: Determined by the capacity of the
applied motor and found in Table 5. The rated
capacity used here is used to calculate the generated
harmonic amount and is different from the power
supply capacity required for actual inverter drive.
13th 17th 19th
2.45 2.303 1.568
4.15 3.901 2.656
8.35 7.849 5.344
12 11.28 7.68
19.7 18.52 12.61
28.95 27.21 18.53
38.8 36.47 24.83
56.05 52.69 35.87
75.45 70.92 48.29
93 87.42 59.52
111 104.3 71.04
148.5 139.6 95.04
183 172 117.1
222.5 209.2 142.4
272.5 256.2 174.4
372.8 350.4 238.6
445.5 418.7 285.1
542.5 509.9 347.1
654.6 615.3 418.9
781.8 734.9 500.4
1076 1011 688.5
1221 1148 781.6
1364 1282 872.7
1533 1441 981.3
1730 1627 1107
1949 1832 1247
2191 2059 1402
2436 2290 1559
2727 2564 1745
3070 2886 1965
25th
2.2
1.4
23rd 25th
1.47 1.078
2.49 1.826
5.01 3.674
7.2 5.28
11.82 8.67
17.37 12.74
23.28 17.07
33.63 24.66
45.27 33.2
55.8 40.92
66.6 48.84
89.1 65.34
109.8 80.52
133.5 97.9
163.5 119.9
223.7 164
267.3 196
325.4 238.7
392.7 288
469.1 344
645.5 473.3
732.7 537.3
818.2 600
920 674.7
1038 761.3
1169 857.3
1315 964
1462 1072
1636 1200
1842 1351