Fuji Electric FRN355VG1S-4J [1030/1046] App b japanese guideline for suppressing harmonics by customers receiving high voltage or special high voltage

Fuji Electric FRN500VG1S-4J [1030/1046] App b japanese guideline for suppressing harmonics by customers receiving high voltage or special high voltage
A-12
App. B Japanese Guideline for Suppressing Harmonics by
Customers Receiving High Voltage or Special High
Voltage
- Disclaimer: This document provides you with a translated summary of the Guideline of the Ministry of
Economy, Trade and Industry. It is intended to apply to the domestic market only. It is only for reference
for the foreign market. -
Agency of Natural Resource and Energy of Japan published the following two guidelines for
suppressing harmonic noise in September 1994.
(1) Guideline for suppressing harmonics in home electric and general-purpose appliances
(2) Guideline for suppressing harmonics by customers receiving high voltage or special high voltage
Assuming that electronic devices generating high harmonics will be increasing, these guidelines are
to establish regulations for preventing high frequency noise interference on devices sharing the
power source. These guidelines should be applied to all devices that are used on the commercial
power lines and generate harmonic current. This section gives a description limited to
general-purpose inverters.
B.1 Application to general-purpose inverters
[ 1 ] Guideline for suppressing harmonics in home electric and general-purpose
appliances
Our three-phase, 200 V class series inverters of 3.7 kW or less (FRENIC-MEGA series) were the
products of which were restricted by the "Guideline for Suppressing Harmonics in Home Electric
and General-purpose Appliances" (established in September 1994 and revised in October 1999)
issued by the Ministry of Economy, Trade and Industry.
The above restriction, however, was lifted when the Guideline was revised in January 2004. Since
then, the inverter makers have individually imposed voluntary restrictions on the harmonics of their
products.
We, as before, recommend that you connect a reactor (for suppressing harmonics) to your inverter.
[ 2 ] Guideline for suppressing harmonics by customers receiving high voltage or special
high voltage
Unlike other guidelines, this guideline is not applied to the equipment itself such as a
general-purpose inverter, but is applied to each large-scale electric power consumer for total amount
of harmonics. The consumer should calculate the harmonics generated from each piece of equipment
currently used on the power source transformed and fed from the high or special high voltage source.
(1) Scope of regulation
In principle, the guideline applies to the customers that meet the following two conditions:
- The customer receives high voltage or special high voltage.
- The "equivalent capacity" of the converter load exceeds the standard value for the receiving
voltage (50 kVA at a receiving voltage of 6.6 kV).
Appendix B.2 [1] "Calculation of equivalent capacity (Pi)" gives you some supplemental
information with regard to estimation for the equivalent capacity of an inverter according to the
guideline.

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