Mitsubishi Electric FR-F800 Series Instruction Manual page 100

 Equivalent capacity limit
Received power voltage
6.6 kV
22/33 kV
66 kV or more
 Harmonic content (when the fundamental current is considered as 100%)
Reactor
Not used
Used (AC side)
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 the
list of the equivalent capacity limits), harmonics must be calculated by the equation in next subheading.
P0 = Σ (Ki × Pi) [kVA]
Ki: Conversion factor (Refer to the list of the conversion factors.)
Pi: Rated capacity of harmonic generating equipment
i: Number indicating the conversion circuit type
*1 Rated capacity: Determined by the capacity of the applied motor and found in the table "Rated capacities and outgoing harmonic currents of
inverter-driven motors". 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.
 Calculation of outgoing harmonic current
Outgoing harmonic current = fundamental wave current (value converted from received power voltage) × operation ratio ×
harmonic content
• Operation ratio: actual load factor × operation time ratio during 30 minutes
• Harmonic content: Refer to the list of the harmonic content.
 Rated capacities and outgoing harmonic currents of inverter-driven motors
Applicable
wave current (A)
motor (kW)
0.4 1.61
0.75 2.74
1.5 5.50
2.2 7.93
3.7 13.0
5.5 19.1
7.5 25.6
11 36.9
15 49.8
18.5 61.4
22 73.1
30 98.0
37 121
45 147
55 180
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50 kVA
300 kVA
2000 kVA
5th 7th
65 41
38 14.5
30 13
28 9.1
Fundamental Fundamental
wave current
converted from
200 V 400 V
6.6 kV (mA)
0.81 49
1.37 83
2.75 167
3.96 240
6.50 394
9.55 579
12.8 776
18.5 1121
24.9 1509
30.7 1860
36.6 2220
49.0 2970
60.4 3660
73.5 4450
89.9 5450
search engine
Reference capacity
11th 13th
8.5 7.7 4.3
7.4 3.4 3.2
8.4 5.0 4.7
7.2 4.1 3.2
*1
[kVA]
Outgoing harmonic current converted from 6.6 kV (mA) (No reactor, 100%
Rated
capacity
(kVA)
5th 7th
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
17th 19th 23rd
3.1 2.6
1.9 1.7
3.2 3.0
2.4 1.6
operation ratio)
11th 13th 17th 19th
3.773 2.107 1.519
6.391 3.569 2.573
12.86 7.181 5.177
18.48 10.32 7.440
30.34 16.94 12.21
44.58 24.90 17.95
59.75 33.37 24.06
86.32 48.20 34.75
116.2 64.89 46.78
143.2 79.98 57.66
170.9 95.46 68.82
228.7 127.7 92.07
281.8 157.4 113.5
342.7 191.4 138.0
419.7 234.4 169.0
3. PRECAUTIONS FOR USE OF THE INVERTER
3.2 Power supply harmonics
1
2
25th
3
1.8
1.3
2.2
1.4 4
5
6
7
8
9
10
23rd 25th
1.274 0.882
2.158 1.494
4.342 3.006
6.240 4.320
10.24 7.092
15.05 10.42
20.18 13.97
29.15 20.18
39.24 27.16
48.36 33.48
57.72 39.96
77.22 53.46
95.16 65.88
115.7 80.10
141.7 98.10
99