Higher Harmonic Suppression Measure Guidelines - Mitsubishi Electric MDS-E Series Instruction Manual

MDS-E/EH Series Instruction Manual
15 Appx. 6: Higher Harmonic Suppression Measure Guidelines

15.1 Higher Harmonic Suppression Measure Guidelines

These guidelines apply to users for which the 6-pulse equivalent capacity total of the installed higher harmonic generator
exceeds the reference in the following table. (Note that household appliances and general-purpose products having a
rated current of 20A/phase or less connected to a 300V or less commercial power supply are excluded from the
generators.)
Use the following flow chart to confirm whether the total exceeds the reference.
Reference capacity or less
Higher Harmonic Suppression Guidelines were set in September 1994 by the Ministry of International Trade and
Industry's Agency of Natural Resources and Energy.
• Higher Harmonic Suppression Measure Guidelines for Household Appliances and General-purpose Products
• Higher Harmonic Suppression Measure Guidelines for Consumers Receiving High Voltage or Special High Voltage
Power
IB-1501229-F
New installation, expansion or upgrading of facility
Calculation of total equivalent capacity
Total equivalent capacity
Step 1
Calculation of higher harmonic current flow
Higher harmonic current
Step 2
Upper limit
Higher harmonic suppression measures not required
510
Reference capacity exceeded
Upper limit value exceeded
Higher harmonic
suppression measures
required