Mitsubishi Electronics A800 ユーザーズマニュアル

Harmonic currents flow from the inverter to a power receiving point via a power transformer. The Harmonic Suppression 
Guidelines was established to protect other consumers from these outgoing harmonic currents.
The three-phase 200 V input specifications 3.7 kW or lower were previously covered by "the Harmonic Suppression Guidelines for 
Household Appliances and General-purpose Products" and other models were covered by "the Harmonic Suppression Guidelines for 
Consumers Who Receive High Voltage or Special High Voltage". However, the transistorized inverter has been excluded from the target 
products covered by "the Harmonic Suppression Guidelines for Household Appliances and General-purpose Products" in January 2004 and 
"the Harmonic Suppression Guideline for Household Appliances and General-purpose Products" was repealed on September 6, 2004.
All capacity and all models of general-purpose inverter used by specific consumers are now covered by "the Harmonic 
Suppression Guidelines for Consumers Who Receive High Voltage or Special High Voltage" (hereinafter referred to as "the 
Specific Consumer Guidelines").
 • "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



 • Conversion factors for FR-A800 series

 • Equivalent Capacity Limits

 • Harmonic content (Values of the fundamental current is 100%)



The converter unit (FR-CC2) is equipped with the DC reactor on its DC side.

6.6 kV

3.5

2.5

1.6

1.3

1.0

0.9

0.76

0.70

22 kV

1.8

1.3

0.82

0.69

0.53

0.47

0.39

0.36

33  kV

1.2

0.86

0.55

0.46

0.35

0.32

0.26

0.24

Three-phase bridge
(Capacitor smoothing)

With reactor (DC side) 

K33 = 1.8

With reactors (AC, DC sides) 

K34 = 1.4

Self-excitation three-phase bridge

When a high power factor converter is used

K5 = 0

6.6 kV

50 kVA

22/33 kV

300 kVA

66 kV or more

2000 kVA

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

Install, add or renew 

equipment 

Calculation of equivalent 

capacity total

Equivalent 

capacity total

Calculation of outgoing 

harmonic current

Not more than 

harmonic current upper

 limit?

Harmonic suppression 
measures unnecessary

Harmonic suppression 

measures necessary

Equal to or less 
than upper limit

More than upper limit

Above reference 
capacity

Equal to or less 
than reference 
capacity