Comparison and evaluation of the performance of five LED lamps: Who is the better choice for “performance and safety”?

Due to the improvement of LED technology and the decrease of cost, LED lighting products are becoming more and more popular among consumers. Among them, as a substitute for traditional fluorescent tubes, LED tubes have gradually increased their application proportions.

According to the statistics of GGII, the output value of China’s LED tube market reached 15.5 billion in 2017, second only to bulb lamps. It is the second-most segmented product in the field of indoor lighting in terms of output value. The annual output value has increased year-on-year. The speed reached 30.6%.

Benefiting from the increasingly stable quality of LED tube products, strong demand in overseas markets, replacement of traditional lighting, and the gradual improvement of corporate channel layouts, China’s LED tube market can still maintain a growth rate of about 21.7% in 2018. It can be seen that the LED tube market still has a broad market space.

As a global lighting leader, Philips Lighting has launched T8 LED tubes that can be adapted to the transformation of T8 fluorescent tubes. It is reported that Philips Lighting has introduced standard, enhanced, and super bright T8 LED tubes that can meet different lighting requirements. Moreover, each product meets CE, KEMA, TUV, RoHS and other certification requirements.

Gaogong LED understands that Philips lighting LED tubes are energy-efficient and efficient, which greatly reduces power consumption. The product is easy to replace, has a long life, reduces operation and maintenance costs, and improves the comprehensive benefits of enterprise use.

As we all know, Philips Lighting has continued to improve flexible led strip, and its products have reached the leading level in the industry. It is worth mentioning that at the “2017 High-tech LED Annual Conference and Golden Globe Awards Ceremony”, its T8 LED tube defeated many participating companies with its excellent performance and won the LED straight tube light golden ball in the evaluation of good lighting products. prize.

In order to understand the performance of Philips Lighting T8 LED tube in terms of photoelectric performance and safety, this issue of Gaogong LED will compare the Philips Lighting T8 LED tube with three domestic well-known brand samples and one unbranded sample. .

Electrical performance parameters

When I got the test data of 5 samples, the first thing I paid attention to was the electrical performance parameters of the product. The 5 samples all work at 220V. We found that the power factor of the 5 samples is lower, but the Philips lighting sample is higher than the other samples. This is mainly because the 5 samples all use a low PF value drive power supply.

In terms of measured power, the deviation value of the Philips lighting sample is -3.46%, the deviation value of sample A is 6.72%, the deviation value of sample B is -4.2%, the deviation value of sample C is -2.29%, and the deviation value of sample D is It was 9.22%. It can be seen from the above data that, in terms of power accuracy, sample C>Philips lighting sample>sample B>sample A>non-branded sample. (In the formula, “>” stands for “better than”)

Light parameter

Philips lighting samples and samples A, B, C have a color temperature of 4000K, which is comparable in terms of light parameters; while the color temperature of sample D is 6500K, so it is not comparable to the other four samples in terms of light efficiency and average illuminance.

In terms of luminous flux, the Philips lighting sample is higher, while sample D performs poorly. Among them, sample B is relatively close to the Philips lighting sample. The luminous fluxes of samples A, B, C and Philips lighting samples differ by 11.60%, 3.14%, and 21.23%.

In terms of light efficiency, the Philips lighting sample is higher, followed by sample B, and the light efficiency of sample C and sample A is relatively low. Among them, samples A, B, and C differ from Philips lighting samples by 20.03%, 2.39% and 16.98% in light efficiency.

In terms of average illuminance, the average illuminance value of sample B is larger, followed by the Philips illuminance sample. The average illuminance difference between sample C and sample B is 28.78%.

Safety parameters

The five samples are tested in strict accordance with IEC 62776 (safety requirements for double-ended LED lights). The test report shows that the five samples all use lamp caps that meet the requirements of IEC60061-1, and use gauges that meet IEC60061-3 to ensure the interchangeability of the lamp caps.

In addition, from the data point of view, samples A, C, and D have electrical connections at both ends of the lamp during the insertion process, which does not meet the safety requirements of the pins during insertion, and therefore does not meet the IEC 62776 (double-ended LED lamp safety requirements) standard; Although sample B is in the state where the switch is turned to’off’, it is satisfied that there is no contact current. However, the additional switch method does not meet the requirements of IEC 62776 and cannot guarantee 100% safety in the actual installation and use of the product.

Philips lighting samples adopt pure single-ended wiring, and there is no electrical connection at both ends of the lamp during the insertion process, which meets the requirements of IEC 62776.

Install

As we all know, replacing traditional fluorescent tubes with led tape lighting is not the same as when we replace traditional fluorescent tubes every day, we don’t directly take off the tubes, and then directly install the new LED tubes on the bracket without any circuit modification. Such a modification method will not only fail to achieve the desired energy-saving effect, but will also damage the LED tube. To replace the traditional fluorescent tube with LED tube, it is necessary to adjust and transform the related circuit in the bracket. Whether it is a double-ended LED lamp or a single-ended LED lamp, the wiring needs to be modified during installation.

However, some double-ended LED lamps have internal electrical connections between the two ends. When one end of the double-ended LED lamp is inserted into a charged lamp holder, the other floating end will be charged. In practical applications, because the installer often cannot tell whether the lamp switch has cut off the power supply, the live pin on the other end of the double-ended LED lamp may cause electric shock to the installer when one end of the double-ended LED lamp is inserted, which may cause electric shock and additional damage to the human body.

Compared with double-ended LED lights, single-ended LED lights are safer. Gaogong LED noticed that the Philips lighting samples are single-ended power-in, samples A, C, and D use double-ended power-in, and the risk of electric shock during installation is relatively high.

And sample B adopts the transition scheme of double-terminal wiring with additional switch. Sample B may get an electric shock when the switch is turned on, but not when the switch is turned off. In addition, for the sample B scheme, if the start switch is not set to the closed state when the lamp is installed, the LED lamp cannot be lit.

Therefore, sample B is a transitional solution, which not only does not comply with the IEC standard, but also causes confusion for users. And Philips lighting samples do not have this concern.

Relatively speaking, Philips Lighting’s single-ended solution is safer and meets the relevant IEC standards.

Value for money

It can be seen from the above table that although the total purchase price of Philips lighting samples is significantly higher than other brands, the difference is not very obvious when the unit price per lumens is allocated. This also shows that the advantages of Philips lighting samples in luminous flux can effectively make up for Its price disadvantage.

In terms of power, sample C has a smaller deviation value, followed by Philips. At the same time, in terms of power factor, Philips lighting power factor is relatively high, which indicates that the reactive power converted into heat by Philips lighting samples is relatively low, which increases equipment utilization and reduces line power loss.

At the same time, Philips lighting samples have better performance in terms of light efficiency. Under the same power, Philips lighting samples have strong illuminance and brightness. In addition, Philips lighting samples have an absolute advantage in terms of safety. From a safety perspective, Philips lighting is the first choice. After all, for consumers, safety is priceless.

Summary: As a world-renowned brand and a leader in the lighting industry, Philips Lighting strictly complies with international advanced standards in terms of electrical performance, light efficiency, illuminance and safety of LED tubes. From this comparative evaluation, it is found that the Philips lighting LED tube performs well in all aspects of photoelectricity. At the same time, from the perspective of consumer safety, Philips Lighting has taken all aspects of consumer safety into consideration during the product design stage.

For more products please click: tape lighting manufacturer