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A New International Standard for the “Safety of Tubular LED Lamps” was issued Aiming at the dissemination of energy-saving products under the international standard based on the Japanese Industrial Standard (JIS)

The International Electricaltechnical Commission (IEC) has issued IEC 62931, an international standard for the safety of tubular LED Lamps , for which the proposal was made by Japan to IEC, aiming to enhance the safety of and promote the dissemination of such lumps with high energy-saving performance.

1. Background

As LED lamps are products with a higher luminescent efficiency than fluorescent and other lamps and, therefore, have high energy-saving performance, the dissemination of the products among the public has been advancing. In this trend, further dissemination of the products is being required for the realization of sustainable societies.

To this end, in April 2013, the Ministry of Economy, Trade and Industry (METI) established the JIS* for the safety of tubular LED lamps for general lighting services from the perspective of the enhanced safety in use and for consumers, and of the development and dissemination of LED lights with outstanding energy-saving performance.

Based on this JIS, in November 2013, Japan made a proposal to the IEC for the international standardization of the safety of tubular LED lamps, and then IEC issued a new international standard (IEC62931)** in January 2017.

*1: JIS C 8159-1 (Non-integrated linear LED lamps with GX16t-5 cap for general lighting services -Part 1: safety specifications)
**2: IEC 62931: GX16t-5 capped tubular LED lamp - Safety specifications

2. Outline of the international standard

The new international standard indicates the following technical requirements:

1) Caps

The standard requires that tubular LED lamps shall use a GX16t-5 cap *** exclusively for LED lamps to prevent users from improperly installing LED lamps into lighting equipment for fluorescent lamps.

***3: The GX16t-5 cap is characterized by the shape of a cap pin to prevent the lamps from falling, the one-side power supply to prevent the electrification of users, and the structures to keep hands away from a power-supply terminal. (Japan proposed, to the IEC, the addition of a new type of lamp caps to IEC60061-1, an international standard for lamp caps, and in 2015, the IEC amended this standard to add the new type of caps.)

2) Preventing LED lamps from falling (changes in lengths of LED lamps due to changes in temperature, or deflection of such lamps)

Unlike fluorescent lamps, some LED lamps utilize materials that are prone to heat deformation, e.g., resins, as materials of the lamp shells. To address this, the standard indicates the allowable value range concerning changes in scales of LED lamps to prevent such lamps from falling due to elasticity or deformation caused by changes in temperature or their own weight.

3) Protecting users from electrification

The standard indicates the details of the LED-lamp structure in which no easily-breakable materials, e.g., glass, are used for the shells of LED lamps or in which even if such materials are used and an LED lamp is broken, users are kept away from wiring and other members inside the LED lamp.

Moreover, the standard indicates the requirements for manufacturers concerning the provision of insulation resistance and withstand voltage between cap pins arranged at both ends of a tublar LED lamp, thereby preventing users from electrification even when such users incidentally touch the cap pins during the installation of a lamp into lighting equipment or other occasions.

3. Effects brought about by the issuance of the international standard

 The issuance of this international standard will contribute not only to the prevention of improper use but also to the expansion of business to overseas markets for tubular LED lamps with high safety in terms of electric and mechanical structures. These opportunities are expected to further contribute to the realization of sustainable societies.

Release date

February 10, 2017

Division in Charge

  • International Electrotechnology Standardization Division, Industrial Science and Technology Policy and Environment Bureau
  • Information and Communication Electronics Division, Commerce and Information Policy Bureau

Related website

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