Harmonic Suppression Guidelines - Mitsubishi Electric FATEC FR-A800 Manual

7
REVIEW OF INSTALLATION ENVIRONMENT
7.1.4

Harmonic suppression guidelines

The harmonic current flows from the inverter to a power receiving point via a power transformer. The
Harmonic Suppression Guidelines was established to protect other consumers from this outgoing
harmonic current.
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 general-purpose 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Guideline for Household Appliances and General-purpose Products" was repealed on September 6,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 capacities and all models of general-purpose inverters used by specific consumers (consumers
who receive high voltage) are covered by the "Harmonic suppression guideline for consumers who
receive high voltage or special high voltage".
"Harmonic Suppression Guidelines for Consumers Who Receive High Voltage or Special High
Voltage"
This guideline defines the maximum harmonic current 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 countermeasures.
However, we ask the users who are not covered by the guideline to connect a DC reactor or an AC
reactor as usual.
For compliance with the "Harmonic Suppression Guidelines for Consumers Who Receive High
Voltage or Special High Voltage"
Input power
supply
Three-phase
200 V
Three-phase
400 V
7.1 Power supply of inverter (harmonics and instantaneous power failure)
92
Applicable
capacity
Make a judgment based on the "Harmonic Suppression Guidelines for
Consumers Who Receive High Voltage or Special High Voltage" issued by the
Japanese Ministry of Economy, Trade and Industry (formerly Ministry of
International Trade and Industry) in September 1994 and take
countermeasures if necessary. For how to calculate the power supply
harmonics, refer to the following.
All capacities References
• "Harmonic Suppression Measures of the General-purpose Inverter"
January 2004 JEMA The Japan Electrical Manufacturers' Association
• "Calculation Method of Harmonic Current of the General-purpose Inverter
Used by Specific Consumers"
JEM-TR201 (Revised in December 2003): The Japan Electrical
Manufacturers' Association
Countermeasures