In today's lighting market, LED lights have become the preferred choice of many buyers due to their high efficiency, energy saving and environmental protection advantages. However, theHow can I ensure that the LED lights I purchase are of reliable quality?This requires a professionalinspection of goodsinspection and strict quality control. As a professional and authoritative global third partyinspection serviceThe Platform.Inspection OnlineWe are committed to providing you with comprehensive and accurate LED light inspection services to ensure your procurement without worries.
First, the importance of quality inspection of LED lights
As a widely used lighting product, the quality of LED lamps is directly related to the lighting effect, energy consumption and service life. ByInspection OnlineStrict inspection and quality control ensure that the products meet the standards and provide users with a quality lighting experience. For buyers, high-quality LED lights not only reduce maintenance costs, but also enhance the competitiveness of the product in the market.
Second, LED lamp appearance inspection
1. Appearance requirements
About 0.5 meters from the lamp, visual inspection of the shell, lampshade and other parts, there should be no deformation, no scratches, wear, paint, dirt. No deformation of the pins; shake the lamp without loosening, abnormal noise. Our professional inspectors of Goods Inspection Online will carry out the appearance inspection with strict standards to ensure that each luminaire meets the appearance quality requirements.
2. Dimensional requirements
The dimensions should be in accordance with the drawings. We will use precision measuring tools to accurately measure the dimensions of the fixture to ensure that they are consistent with the specifications provided by the purchaser.
3. Material requirements
The materials used in the various parts of the lamps and their structural design comply with the requirements of the drawings. We will inspect the materials of the lamps and lanterns to ensure that their quality and performance meet the standards.
4. Assembly requirements
Each fastening screw on the surface of the luminaire should be tightened without leakage, the edges should be free of burrs and sharp edges, and each connection should be firm without loosening. Our inspection personnel will carefully check the assembly of the lamps and lanterns to ensure the stability and safety of the products.
III. Performance testing
1. Cooling systems
LED luminaires need a good heat dissipation system to ensure that the temperature of the aluminum-based circuit board shall not exceed 65℃ when working under normal environment. We will use professional temperature testing equipment to test the heat dissipation performance of the luminaire.
2. Over-temperature protection function
The luminaire should have over-temperature protection function. We will simulate different working environments to test whether the over-temperature protection function of the luminaire is normal.
3. Control circuit abnormal protection
A 3C or UL or VDE approved fusing device is provided for overcurrent protection in the event of an electrical circuit abnormality. We will check the control circuit of the luminaire to ensure that it has effective protection against abnormalities.
4. Resistance to abnormal LED operation
Each LED string group is driven by an independent constant current source power, which is able to operate safely and at a stable current in the event of an abnormal LED breakdown short circuit. We test LEDs for abnormal operation to ensure that the fixtures will operate reliably under all conditions.
5. Moisture-resistant, moisture-expelling respiratory function
The internal circuit board shall be treated with moisture-proof, and the lamps shall have waterproof and breathable respirators to ensure that the lamps can still work stably after being exposed to moisture inside and remove the water vapor by the heat generated by its own work. We will test the moisture-proof performance of the lamps to ensure that they can also work properly in humid environments.
6. Ratio of total downward flux to luminaire energy consumption
The ratio of total downward flux to energy consumption of LED luminaires is ≥56LM/W. We will use professional optical testing equipment to test the luminous flux and energy consumption of the luminaires to ensure that they comply with energy efficiency standards.
IV. Field tests
1. Switching times test
The fluorescent lamps can still be turned on and operated normally after passing 5000 switching tests under the condition of 60 seconds of lighting and 60 seconds of switching off under the power supply applying the rated voltage and rated frequency. We will conduct strict switching times test to ensure the service life of the lamps.
2. Durability test
The luminous flux is not less than 85% of the initial luminous flux after 360 hours of continuous operation with the rated voltage and rated frequency applied to the power supply at a temperature of 60°C±3°C and a maximum relative humidity of 60% in a non-convective wind environment, and we simulate a variety of harsh operating environments to test the durability of the lamps and lanterns.
3. Overvoltage protection
When the input voltage is 1.2 times the rated value, the over-voltage protection device should operate; when the voltage returns to normal, the LED luminaire also returns to normal operation. We will test the overvoltage protection function of the luminaire to ensure that it can operate safely even when the voltage fluctuates.
4. High and low temperature working tests
The test shall be conducted at -25℃ and +40℃ respectively, each 96±2 hours. After the test, the appearance and structure of the LED lamp should have no obvious changes, and the average illuminance and other parameters should meet the requirements. We will carry out high and low temperature working tests to ensure that the lamps can work normally at different temperatures.
5. Free fall test
With complete packaging, without power, from a height of 2 meters free fall 8 times, after the test to check the tested equipment should be no damage and fasteners loose off phenomenon, power equipment function normally. We will carry out the free fall test to ensure that the packaging of the luminaire and the product will not be damaged during transportation.
6. Integrating sphere tests
Including the testing of luminous flux, color rendering index, color temperature and other parameters. We will use professional integrating sphere test equipment to conduct a comprehensive test on the optical performance of the luminaire.
V. Packaging Inspection
1. Paper requirements
The packaging used shall be guaranteed to pass a drop test. We will perform a drop test on the packaging of the lamps to ensure that it protects the product from damage during transportation.
2. Printed content
The printed content of the outer package shall not be incorrect, containing information such as front and side mark, order number, etc. The handwriting and pattern shall be clear, there shall be no overlapping, and there shall be no obvious color difference in the whole batch. We will carefully check the printed content of the package to ensure its accuracy.
3. Dimensional requirements
Error ±1/4 inch, the crimp line should be right, there should not be any closing phenomenon, to make sure the material is accurate. We will measure the dimensions of the package to make sure it meets the requirements.
4. Bar code requirements
Computerized barcodes should be compliant and clear, and scanning should be OK. we check the barcodes on packages to make sure they are scannable and the information is accurate.
VI. Quality identification methods
1. Look at the packaging and logo
The state mandatory requirements for LED lighting manufacturers products in the outer packaging marked with the relevant content, high-quality products of good quality trademark printing quality, clear font, not easy to fall off, with the manufacturer's trademark and related certification mark. Our professional staff at Goods Inspection Online will carefully check the packaging and trademarks of the lamps and lanterns to ensure that they meet the standards.
2. Look at the appearance of the LED tube
True LED energy-saving lamps, is to use three-color tube, tube white, with a hand covered to see, more white. Multiple lamps are put together for comparison, and those with better consistency in tube shape and size are mostly mass-produced products. We will compare and evaluate the appearance of the lamps to provide buyers with accurate quality judgment.
3. Look at the temperature during operation
LED energy-saving lamps should have a very low temperature rise under normal operating conditions. Otherwise, LED energy-saving lamp life is very short. At the same time, when the energy-saving lamp is lit, there is a very fast flickering, either very harsh fluctuation, all indicate that the energy-saving lamp has quality problems. We will use professional temperature testing equipment to test the working temperature of the lamps.
4. Look at start-up performance
LED energy-saving lamps have two characteristics to start: first, the higher the temperature the easier it is to start; second, the lamp is turned off and will not flash. In addition, the luminaire should have a power circuit and PCB board inside. We will test the starting performance of the lamps to ensure that they meet the standards.
5. Looking at interference
Bring a short- and medium-wave radio, when the lamp is working, put the radio in the vicinity, the radio to short-wave no radio station at the lower the noise emitted, the better the electromagnetic compatibility of the lamp under test. We will use the radio to test the EMC of the lamp to ensure that it will not cause interference with other equipment.
VII. Quality control measures
1. Control of procurement of raw materials
We establish long-term relationships with reliable suppliers, conduct strict quality inspections of raw materials, and conduct regular quality assessments of our suppliers. We at Inspection Online conduct random inspections of raw materials from our suppliers to ensure that they are of reliable quality.
2. Production process control
We set up a strict production process, regular maintenance and repair of production equipment, a perfect quality record system, and training for production personnel. We will supervise and inspect the production process to ensure that the products meet the quality standards.
We at Goods Inspection Online will use professional testing equipment to conduct comprehensive testing and evaluation of the lamps and lanterns. As a professional third-party inspection organization, Goods Inspection Online has a professional inspection team, advanced testing equipment and strict quality control system. We are committed to providing buyers with high-quality and efficient inspection services to ensure that the quality of LED lights you purchase is reliable. Choosing Goods Inspection Online is choosing quality assurance.
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