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(1) Application of the harmonic suppression guideline for specific consumers
Table 2 Conversion Factors for FR-A500 Series
Table 3 Equivalent Capacity Limits
Table 4 Harmonic Content (Values at the fundamental current of 100%)
Classification Circuit Type Conversion Factor
3
Three-phase bridge
(Capacitor smoothed)
Without reactor K31=3.4
With reactor (on AC side) K32=1.8
With reactor (on DC side) K33=1.8
Without reactor (on AC/DC side) K34=1.4
5 Self-excited three-phase bridge When high power factor converter is used K5=0
Received Power
Volt age
Reference
Capacity
6.6kV 50kVA
22/23kV 300kVA
66kV or more 2000kVA
Reactor 5th 7th 11th 13th 17th 19th 23rd 25th
Not used 65 41 8.5 7.7 4.3 3.1 2.6 1.8
Used (AC side) 38 14.5 7.4 3.4 3.2 1.9 1.7 1.3
Used (DC side) 30 13 8.4 5.0 4.7 3.2 3.0 2.2
Used (AC, DC sides) 28 9.1 7.2 4.1 3.2 2.4 1.6 1.4
New installation/addition/renewal of
harmonic generating equipment
Calculation of equivalent capacity sum
Sum of equivalent capacities
Calculation of outgoing harmonic
current
Over reference capacity
Is outgoing harmonic
current higher than maximum
value?
Over maximum value
Harmonic suppression
technique is required.
Not more than
maximum value
Harmonic suppression technique is
not required.
Not more than
reference capacity