The latest international standard for lamps, IEC60598-1:2003
Abstract: This paper introduces two changes of the latest international standard IEC60598-1:2003 relative to China's current effective national standard GB7000.1-2002 (the standard is equivalent to IEC60598-1:1999): one change is commonly used in China. Class lamps have been eliminated internationally; another change is in the rectification effect of HID lamps, the scope of application from the original metal halide lamp to some high-pressure sodium lamps and some metal halide lamps.
1. Changes in IEC standards for lamps With the implementation of compulsory product certification and voluntary certification systems in China, more and more employees in the lighting industry have come into contact with the national standards for mandatory lamps, and gradually understand the basic standards of lamps and lanterns GB7000.1. importance. The GB7000.1-2002 "General Safety Requirements and Tests for Luminaires" standard was implemented from August 1, 2003, and replaced the GB7000.1-1996 standard.
One of the characteristics of the standard is the rolling update with the development of science and technology. At the same time as the revision of the GB7000.1 standard, the equivalent international standard IEC60598-1 is also updated. We know that GB7000.1-1996 is equivalent to the third edition of IEC60598-1, and GB7000.1-2002 is equivalent to the fifth edition of IEC60598-1 (ie 1999 edition). At present, IEC60598-1 has been developed to the sixth edition (2003 edition). ). As the main drafter of the GB7000.1 standard, while publicizing and implementing the current version of the national standards for lamps, it also pays attention to the dynamic changes of the IEC standards. At present, the revision of the new round of GB7000.1 standard is underway, and a standard review has been formed. draft. Practitioners in the lighting industry should pay attention to these changes and be technically prepared to ensure that the lighting products produced or sold meet the requirements of national standards. In the following two aspects of the protection against electric shock protection and the rectification effect of HID lamps, we talk about the changes of the sixth edition of IEC60598-1 standard relative to the fifth edition.
1.1 Elimination of Class 0 lamps
1.1.1 Changes in the classification of protection against electric shock by IEC standards
The IEC60598-1 5th edition classifies the protection against electric shock of lamps including Class 0, Class I, Class II and Class III. At present, in addition to Class I, Class II and Class III lamps in China, Class 0 lamps are widely used in indoor lighting.
The sixth edition of IEC60598-1 has undergone great changes in the classification of anti-shock protection, and this change will have a major impact on the Chinese lighting industry.
In the sixth edition of IEC60598-1, the class 0 of the protection against electric shock of lamps is deleted. That is to say, the class 0 lamps that exist in China in large quantities do not comply with the regulations on classification of protection against electric shock in the sixth edition of IEC60598-1. . For lamps designed as Class 0, the corresponding structure should be changed to Class I or Class II as appropriate.
1.1.2 Class 0 lamps, Class I lamps, Class II lamps, Class III lamps
(1) Class 0 lamps
Class 0 luminaires are luminaires that rely on basic insulation as protection against electric shock. This means that the accessible conductive parts of the luminaire (if such parts) are not connected to the protective conductors in the fixed line of the facility, and once the basic insulation fails, it has to rely on the environment.
Class 0 luminaires have not been allowed for wiring rules in CENELEC countries in Europe. These countries are Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Ireland, Norway, Sweden and the United Kingdom. In addition to the special equipment known as "isolation devices" in Italy, the wiring rules do not allow the use of Class 0 lamps. In Japan, Class 0 lamps are only allowed for power supply voltages from 100 to 127V.
(2) Class I tools
Class I luminaires refer to the protection against electric shock of luminaires not only by basic insulation, but also by additional safety measures, that is, connecting the accessible conductive parts to the protective grounding conductors in the fixed line of the facility, so that the accessible conductive parts are The basic insulation will not be charged when it fails.
Class I luminaires can be either double insulated or reinforced, or have special low voltage (SELV) powered components.
(3) Class II tools
Class II luminaires refer to the protection against electric shock not only relying on basic insulation, but also with additional safety measures, such as double insulation or reinforced insulation, but without protective grounding or depending on installation conditions.
Class II luminaires provide protection against electric shock under normal conditions by relying on basic insulation. Under fault conditions (ie, when insulation fails), additional insulation or reinforced insulation is provided to provide protection against electric shock.
(4) Class III lamps
Class III luminaires refer to amps that are protected against electric shock by relying on a supply voltage that is safely low voltage and that do not produce a voltage that is higher than the safety extra low voltage. Class III luminaires should not provide protective grounding.
China's electronic standard GB8898-2001 "Audio, video and similar electronic equipment safety requirements" has long stipulated that the existence of Class 0 electronic products is not allowed; China's household appliances standard GB4706.1-1998 "Safety of household and similar electrical appliances Part 1: General requirements 》Allow the existence of Class 0 home appliances; China's current effective lamp standard GB7000.1-2002 also allows Class 0 lamps to exist. Compared with Class I luminaires and Class II luminaires, the cost of Class 0 luminaires is lower because of the cost of measures such as grounding or additional insulation. In addition, consumers may not have professional knowledge and often purchase prices. The low luminaires make the Class 0 luminaires occupy a large number of indoor luminaires, especially in the use of household luminaires. This also makes many manufacturers are willing to produce Class 0 luminaires, but has now revised GB7000. 1-2002 standard. The GB7000.1 standard that will be published soon will not allow the existence of Class 0 lamps. In other words, Class 0 lamps are bound to be eliminated in China.
2 HID lamp luminaire rectification effect change
Compared with the fifth edition, the sixth edition of IEC60598-1 has been modified in terms of the rectification effect of HID lamps. The scope of application has changed from the original metal halide lamp to some high-pressure sodium lamps and some metal halide lamps. Many changes have been made to the test methods and test lines.
IEC60598-1, 6th edition according to IEC62035 "Safety Requirements for Gas Discharge Lamps (Except Fluorescent Lamps)", F.6 "Possible conditions at the end of light source life": Most high pressure sodium lamps and certain metal halide lamps, in their lifetime At the end of the day, there may be a danger of rectification effects. To ensure safety under these conditions, adequate protection measures should be taken. The IEC 60598-1 version 6 standard specifies that certain metal halide lamps and certain high pressure sodium lamp lamps that may cause overload of the light source control device (ballast, transformer or starting device) should be subjected to rectification effect tests. The IEC 60598-1 5th Edition standard stipulates that the rectification effect test should be performed on metal halide lamp lamps that may affect the overload of the ballast, transformer or starting device according to the description of the light source.
The method of the IEC60598-1 sixth edition regarding the rectification effect test of the HID lamp is as follows: the light source in the lamp is replaced by the test circuit shown in FIG. The test begins with the test circuit and the luminaire and control unit are stabilized at the ambient temperature of the draft shield. Change the resistance R to adjust the lamp current to 2 times the nominal lamp current without further adjustment of R.
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