LED market prices stifle vicious competition. The listing of a large number of unqualified products has violated the real value of LED energy saving, long life and environmental protection. How to distinguish the advantages and disadvantages of LED lamps should start from the following aspects:
First, look at the overall "power factor of the luminaire": low power factor, indicating the use of the drive power, circuit design is not good, will greatly reduce the life of the luminaire, low power factor, the use of good lamp beads will not last long .
Second, look at "lighting conditions of lamps - materials, structure": LED lamps are also very important for heat dissipation, the same power factor lamps and the same quality of the lamp beads, if the heat dissipation conditions are not good, the lamp beads work at high temperatures, light decay will Large, the life of the lamp will be reduced.
How to distinguish the advantages and disadvantages of LED lamps in the vicious competition in the LED market
Third, look at the "light quality": the quality of the lamp is determined by the chip quality and packaging technology.
Fourth, look at the driving power used by the luminaire. The service life of the power supply is much shorter than that of other parts of the luminaire. The life of the power supply affects the overall life of the luminaire. The theoretical life of the lamp bead is 50,000-100,000 hours. The life span is 0.2-3 million hours, and the design and material selection of the power supply will determine the service life of the power supply.
Fifth, look at the light effect: the same lamp power, the higher the light efficiency, the higher the brightness, the same lighting brightness, the smaller the power consumption, the more energy saving.
Sixth, look at the power efficiency, the higher the power efficiency, the higher, the higher the power consumption of the power supply itself, the greater the output power.
Seven, to see if it meets the safety standards, China's LED lighting safety standards have been introduced, please select LED lamps according to the national safety standards.
Eight, see if the work is fine.
A good quality LED lamp, in addition to the above-mentioned several main aspects, also has different technical requirements according to different use environments, such as moisture, dust, anti-magnetic, anti-lightning and so on.
Espag handles are the most common type of window handle used today. A locking system with a flat metal strip which runs up the side that locks into the frame. The locking mechanism moves when the window handle is turned. They fix onto the window with two fixing screws and have a square spindle bar which protrudes from the base. This spindle slots into the lock and then operates a lock located inside the window . Approximately 90% of Espag handles have a standard fixing size, with two screws which are 43mm apart. You can usually interchange Espag handles with any other type, without having to make any adjustments.One thing to be aware of is that they also have various spindle lengths depending on the window in question, and can be a short as 10mm or as long as 60mm.Most of handles come with a 50mm spindle length as standard and this can then be cut down to suit with a normal hacksaw if necessary.
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