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1
Before Using the Products
2
Preparat
on
3
Connect
on
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Setup
5
Ad
ustment
6
When
n T
roub
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7
Supp
ement
Harmonic restraint
Harmonic restraint measures are not common to all countries. Therefore, prepare the
measures that meet the requirements of the destination country.
With products for Japan, on September, 1994, “Guidelines for harmonic restraint on
heavy consumers who receive power through high voltage system or extra high voltage
system” and “Guidelines for harmonic restraint on household electrical appliances and
general-purpose articles” established by the Agency for Natural Resources and Energy
of the Ministry of Economy, Trade and Industry (the ex-Ministry of International Trade and
Industry). According to those guidelines, the Japan Electrical Manufacturers’ Association
(JEMA) have prepared technical documents (procedure to execute harmonic restraint:
JEM-TR 198, JEM-TR 199 and JEM-TR 201) and have been requesting the users to un-
derstand the restraint and to cooperate with us. On January, 2004, it has been decided to
exclude the general-purpose inverter and servo driver from the “Guidelines for harmonic
restraint on household electrical appliances and general-purpose articles”. After that,
the “Guidelines for harmonic restraint on household electrical appliances and general-
purpose articles” was abolished on September 6, 2004.
We are pleased to inform you that the procedure to execute the harmonic restraint on
general-purpose inverter and servo driver was modified as follows.
1. All types of the general-purpose inverters and servo drivers used by specific users are
under the control of the “Guidelines for harmonic restraint on heavy consumers who re
-
ceive power through high voltage system or extra high voltage system”. The users who
are required to apply the guidelines must calculate the equivalent capacity and har-
monic current according to the guidelines and must take appropriate countermeasures
if the harmonic current exceeds a limit value specified in a contract demand. (Refer to
JEM-TR 210 and JEM-TR 225.)
2. The “Guidelines for harmonic restraint on household electrical appliances and general-
purpose articles” was abolished on September 6, 2004. However, based on conven
-
tional guidelines, JEMA applies the technical documents JEM-TR 226 and JEM-TR
227 to any users who do not fit into the “Guidelines for harmonic restraint on heavy
consumers who receive power through high voltage system or extra high voltage sys-
tem” from a perspective on enlightenment on general harmonic restraint. The purpose
of these guidelines is the execution of harmonic restraint at every device by a user as
usual to the utmost extent.
7. Options
Reactor
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