The statement in the first paragraph of Clause 7 that “there shall not be any electrical continuity between the two ends of the lamp during the insertion” is in. IEC /ISH Standard | Interpretation sheet 1 - Double-capped LED lamps designed to retrofit linear CHF Free download. IEC in English | Double-capped LED lamps designed to retrofit linear fluorescent lamps - Safety specifications.
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Sponsored link. download between hoursReleased: IEC - Double-capped LED lamps designed to retrofit linear fluorescent lamps. IEC Ed. b cor Corrigendum 1 Content Provider International Electrotechnical Commission [IEC] Close. PDF Price. $ Free Download. IEC applies to “Double-capped LED lamps designed.
LED tubes that are compatible with an electronic HF ballast. These LED tubes require a fixture that includes a functioning electronic ballast. This type has the advantage of easy upgrade of the LED tube compared to installation method 2.
Expensive maintenance is a downside. In addition to the LED tube, also the electronic ballast may fail, and it can only be replaced by a qualified electrician. If a LED tube that is compatible with an electronic ballast is installed in an old fluorescent fixture, the question of responsibility must be clarified.
Who will be liable for the electronic ballast if it breaks when the LED tube is being installed?
The original supplier of the fixture and the coupling device will no longer be responsible if LED tubes with an electronic ballast are used. Therefore, it is worth considering whether electronic ballasts should be scrapped when LED tubes are fitted in old fixtures, particularly in extensive switchover projects.
The term retro-fit is also used to refer to these tubes, as the new LED tube will fit into the old fixture without modification. LED tubes compatible with the narrow T5 fluorescent tubes are also being introduced to the markets.
They mainly comply with types 3 and 4 above: they are delivered as part of a lighting fixture with external control electronics, or they require a T5 fixture with electronic ballast. History[ edit ] The exact birth time of LED tubes is difficult to establish, but most of the patents on the subject originate from the s. Until LED tubes were mainly manufactured in China. However, since then, manufacture or assembly have also been launched in Finland, for example. In , European safety authorities, including the Finnish Safety and Chemicals Agency, ruled that the risk of electricity flowing through a LED tube during the installation stage should be avoided.
This refers to a situation where one end of a LED tube is connected to the luminaire and the other, free end becomes energized. The ruling resulted in numerous sales bans and product recalls. Products complying with 1st generation electrical connection are still available on the market. In second-generation LED tubes, the risk of installation-related electric shocks that plagued the 1st generation was resolved by a new type of electrical connection.
The connection differs from that of the 1st generation by that it utilises the starter wire present in luminaires for the conveyance of electricity through the luminaire to the other end of the tube.
In most cases, the solution replaces the starter by a special LED starter that short-circuits the starter branch. Since the light emitted by LED tubes is beam-like, the performance measured in lx of LED tubes as compared to fluorescent lamps of comparable size has also significantly depended on luminaire placement and optics.
Some luminaire frames reflect the light emitted from a fluorescent lamp upwards and to the sides quite well, while others waste almost all but the light emitted downwards.
Such luminaires are capable of maximizing redirection of the light emitted from a fluorescent lamp upwards and to the sides back into the room. In case of 3rd generation LED tubes, efforts have been made to solve this problem by increasing their luminous power, so that it would be sufficient under any circumstances, regardless of the luminaire.
As a result, however, the tube surface brightness surpasses that of fluorescent lamps, and in some cases, individual bright LED components can have a disturbing effect.
Today, several manufacturers offer 3rd generation LED tubes, but the excessive luminous power is generally accompanied by increased electricity consumption. Recently, several studies aimed at flickering of electric lights have been conducted. According to these studies, the flickering of traditional fluorescent lamps can cause brain stress and anxiety. The 4th generation of LED tubes offers a solution to the flickering problem.
The flickering is measured using so-called flicker index or flicker percentage value. Elimination of flickering allows high-quality video recording and slow motion capture, as well as certain machine vision applications in premises equipped with flicker-free lights.
With the help of these, light output and heat conduction are balanced out across the entire tube length. The operating temperature of LED tubes is lower as compared to traditional lighting technologies, and a LED tube produces less heat than traditional fluorescent lamps.
Among the most important properties of LED tubes is the possibility of light direction — the entire luminous power of a LED tube can be directed in a narrower beam to wherever the light is required. Owing to the directivity and good luminous efficacy, LED tubes provide illuminance equal to that of other lighting technologies at lower electric power consumption.
LED tubes are typically made of durable plastic and aluminium, which means that they will not shatter.
IEC 62776 Ed. 1.0 b(2014)
The market for these products has undergone profound change in a very short space of time. In the context of this challenging environment, expertise in energy-efficient lamps and luminaires supports you in developing reliable, high-performance products for the highly competitive lighting market.
We help you understand the many different technologies involved and meet the legal requirements and standards in your target markets. At the same time, consumers today are uncertain about the performance and safety of these new lighting products. There is a high level of concern caused by myths and rumours that energy-saving bulbs cause cancer, migraines, epilepsy attacks and other threats to safety and health.
With energy-saving lighting audits, you can assure consumers of the high quality and safety of your products. How can you prepare for energy-saving lighting testing?
You will need to prepare product documentation that includes proof of product usage, design of the product and documentation of functionality. This documentation needs to clearly define how the product is intended for use by customers and how it is designed to meet regulatory and customer usability needs.
Our services extend from ensuring compliance with legal requirements to quality assurance and certification.They mainly comply with types 3 and 4 above: they are delivered as part of a lighting fixture with external control electronics, or they require a T5 fixture with electronic ballast.
Different steps for calculating the integrated variance. Today, several manufacturers offer 3rd generation LED tubes, but the excessive luminous power is generally accompanied by increased electricity consumption. We help you understand the many different technologies involved and meet the legal requirements and standards in your target markets. Medical - connectors and cable assembly.
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