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Mitsubishi Electric FR-CS84-012 Instruction Manual Page 55

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• "Specific Consumer Guidelines"
This guideline sets forth the maximum harmonic currents outgoing from a high-voltage or especially high-voltage receiving
consumer who will install, add or renew harmonic generating equipment. If any of the maximum values is exceeded, this
guideline requires that consumer to take certain suppression measures.
• Maximum values of outgoing harmonic currents per 1 kW contract power
Received
power voltage
6.6 kV
3.5
22 kV
1.8
33 kV
1.2
 Application of the specific consumer guidelines
 Conversion coefficient
Classification
3
4
5
 Equivalent capacity limit
Received power
voltage
6.6 kV
50 kVA
22/33 kV
300 kVA
66 kV or more
2000 kVA
 Harmonic content (when the fundamental current is considered as 100%)
54
3. PRECAUTIONS FOR USE OF THE INVERTER
3.2 Power supply harmonics
5th
7th
2.5
1.6
1.3
0.82
0.86
0.55
Install, add or renew
equipment
Calculation of equivalent
capacity total
Equal to or less
than reference
capacity
Above reference
capacity
Calculation of outgoing
harmonic current
Harmonic suppression
measures unnecessary
Three-phase bridge (capacitor
smoothing)
Single-phase bridge (capacitor
smoothing, double voltage
rectification)
Single-phase bridge (capacitor
smoothing, full-wave rectification)
Self-excitation three-phase bridge
Reference
capacity
11th
13th
1.3
1.0
0.69
0.53
0.46
0.35
Equivalent
capacity total
Not more than
More than upper limit
harmonic current upper
limit?
Harmonic suppression
Equal to or less
measures necessary
than upper limit
Circuit type
Without reactor
With reactor (AC side)
With reactor (DC side)
With reactors (AC, DC sides)
Without reactor
With reactor (AC side)
Without reactor
With reactor (AC side)
When a high power factor converter
is used
17th
19th
0.9
0.76
0.47
0.39
0.32
0.26
Conversion factor Ki
K31 = 3.4
K32 = 1.8
K33 = 1.8
K34 = 1.4
K41 = 2.3
K42 = 0.35
K43 = 2.9
K44 = 1.3
K5 = 0
23rd
Over 23rd
0.70
0.36
0.24

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