Mitsubishi Electric FR-XC-18.5K-PWM Instruction Manual page 14

• Rated capacities and outgoing harmonic currents of inverter-driven motors
Fundamental
wave current
Applicable
(A)
motor
(kW)
200 V 400 V
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
• Determining if a countermeasure is required
A countermeasure for harmonics is required if the following condition is satisfied: outgoing harmonic currents >
maximum value per 1 kW contract power × contract power.
• Harmonic suppression techniques
No. Item
Reactor
1
(FR-HAL or FR-HEL)
Multifunction
regeneration
2
converter
(FR-XC series)
Power factor
3
improving capacitor
Transformer multi-
4
phase operation
Passive filter
5
(AC filter)
6 Active filter
Fundamental
wave
Rated
current
capacity
converted
(kVA)
from 6.6 kV
(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
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.
The multifunction regeneration converter with harmonic suppression enabled switches the converter
section ON/OFF to reshape an input current waveform into a sine wave, greatly suppressing
harmonics.
Use the FR-XC series converter with the FR-XCB box-type reactor.
When used with a reactor connected in series, the power factor improving correction capacitor can
absorb harmonic currents.
Use two transformers and establish connections with a phase angle difference of 30° (the wye to delta
connection or the delta to delta connection) to 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.
Pre-operation instructions
Outgoing harmonic current converted from 6.6 kV (mA)
(No reactor, 100% operation ratio)
5th 7th 11th 13th
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
980.9 618.7 128.3 116.2
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
Description
17th 19th 23rd 25th
2.107 1.519 1.274 0.882
3.569 2.573 2.158 1.494
7.181 5.177 4.342 3.006
10.32 7.440 6.240 4.320
16.94 12.21 10.24 7.092
24.90 17.95 15.05 10.42
33.37 24.06 20.18 13.97
48.20 34.75 29.15 20.18
64.89 46.78 39.24 27.16
79.98 57.66 48.36 33.48
95.46 68.82 57.72 39.96
127.7 92.07 77.22 53.46
157.4 113.5 95.16 65.88
191.4 138.0 115.7 80.10
234.4 169.0 141.7 98.10
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OUTLINE
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