In the industrial, municipal, and commercial fields, efficient and reliable lighting systems are key to ensuring production safety and improving space efficiency. As an innovator in B-end LED lighting, ‌ZC Lighting relies on cutting-edge optical design, intelligent control technology, and full-scene adaptation capabilities to provide global customers with cost-effective and long-life professional lighting solutions. This article will deeply analyze the technical advantages and application scenarios of our core product lines. ‌1. Core advantages of industrial-grade LED lighting products‌ ‌Extremely long life and energy-saving The entire series of products adopt high-efficiency LED chips and customized heat dissipation structure, with a light efficiency of 160-220lm/W, which is 60%-80% energy-saving compared to traditional lighting. With an IP65/66 protection level and -40℃~60℃ wide temperature range design, it ensures stable operation for more than 50,000 hours in harsh environments, significantly reducing maintenance costs. ‌Intelligent IoT control‌ Supports intelligent protocols such as DALI, Zigbee, and LoRa to achieve remote dimming, group control, energy consumption monitoring and other functions. For example, industrial and mining lamps can automatically adjust the brightness by sensing the movement of people and vehicles, and the comprehensive power saving rate is increased by 30%; smart street lights are equipped with environmental monitoring modules to enable smart city management. ‌Precise optical design‌ Using asymmetric light distribution and anti-glare technology, industrial and mining lamps achieve uniformity of 10-30 meters high ceiling>0.7, and stadium lights UGR<19, effectively avoiding visual fatigue during operation. Customized beam angles can meet the needs of different scenarios, such as narrow beam concentrated lighting in warehouses and wide-angle coverage in sports stadiums. 2. Detailed explanation of the full-scenario product line‌ Ⅰ. Industrial and mining lamp series‌ ‌Applicable scenarios‌: factory workshops, logistics warehouses, petrochemical plants ‌Technical highlights‌: Aluminum-magnesium alloy die-casting shell, corrosion-resistant and impact-resistant 120°-150° adjustable illumination angle, suitable for 8-25 meters floor height Optional emergency power supply module, continuous lighting for 2 hours after power failure Ⅱ. Smart Street Light Series‌ ‌Applicable scenarios‌: Urban main roads, park roads, tunnels ‌Technical highlights‌: Modular design supports automatic alarm for single lamp failure Optional color temperature 3000K/4000K/5000K, in line with road lighting standards Integrated Wi-Fi hotspot, environmental monitoring (PM2.5/temperature and humidity), and other smart functions ‌Ⅲ. Professional stadium lighting series‌ Applicable scenarios‌: football field, tennis court, gymnasium ‌Technical highlights‌: Adopt TV-level anti-glare lens, vertical illumination uniformity＞0.8 Support 4K ultra-high-definition event broadcast lighting requirements (color rendering index Ra＞90) Wind resistance level reaches 12, suitable for outdoor high-intensity sports scenes ‌Ⅳ. Industrial wall lamp series‌ ‌Applicable scenarios‌: building exterior walls, equipment platforms, safety passages Technical highlights‌: Ultra-thin integrated design, thickness <8cm Side-lighting technology eliminates light spots and achieves a  uniform wall-washing effect 304 stainless steel bracket, suitable for coastal high salt fog environment ‌3. Why choose ZC Lighting? ‌ ‌Customized service‌: Provide one-stop solution design such as light effect simulation, structural adaptation, and intelligent system integration ‌International certification guarantee‌: Passed 50+ global certifications such as CE, RoHS, ENEC, IES LM-80 Quick response system‌: 48-hour technical solution output, 7×24-hour after-sales support ‌Benchmark case endorsement‌: Has served 300+ large-scale projects such as [BMW Automobile Factory], [Port of Amsterdam International Port], [San Francisco City Smart Street Light Project in California] 4. Towards a sustainable future ‌ ZC Lighting has always practiced the concept of green manufacturing, reducing the carbon footprint of its products throughout their life cycle by 45%, and was the first to pass ISO 14064 greenhouse gas verification. We are committed to helping companies achieve ESG goals through innovative technologies and jointly build an efficient, intelligent, and low-carbon industrial lighting ecosystem. ‌Contact our engineering team now to get a free lighting simulation report and exclusive quotation!  

Under the wave of global energy transformation and sustainable development, LED lighting technology is becoming the core driving force for urban upgrading and industrial innovation. As an industry pioneer, ZC Lighting continues to provide efficient and energy-saving solutions for industry, municipal administration, sports, and public spaces with its independently developed high-performance LED lighting products, helping global customers move towards a low-carbon future. ZC Lighting: Deeply cultivating the industry and defining new standards for smart lighting‌ Since its establishment, ZC Lighting has always taken "light efficiency, reliability, and intelligence" as its core concept, focusing on the research and development of LED lighting technology and scenario-based applications. By integrating advanced optical design, heat dissipation structure and intelligent control system, the company has successfully launched a lighting product line covering multiple fields, including ‌LED mining lamps, street lamps, area lamps, stadium lamps, etc., to meet the high-standard requirements of industrial, municipal, and sports stadiums and other scenarios. Core products: Empowering scenes with technology and reshaping spaces with light effects‌‌Innovators in the industrial field: LED mining lamps‌ ZC Lighting mining lamps adopt modular design, with 200LM/W ultra-high light efficiency and IP66 protection level, which can adapt to harsh environments such as high temperature and dust. Its intelligent dimming function can save up to 70% of energy consumption, and with the glare-free design, it significantly improves factory operation safety and employee comfort. ‌Guardian of Urban Arteries: LED streetlights ZC street lights have a long life (more than 50,000 hours) and smart IoT control as their core advantages. Through built-in light and motion sensors, on-demand lighting is achieved; with a honeycomb heat dissipation structure, zero light decay and low-temperature operation are ensured, providing all-weather reliable lighting for urban roads and communities. ‌The finishing touch for sports and public spaces: LED stadium lights and area lights‌ ZC stadium lights achieve uniform illumination and flicker-free effects through precise light distribution technology, meeting the standards for international event broadcasts; while the area light series, with its diverse shapes and customized color temperature design, empowers parks, squares, and other places, taking into account both functionality and aesthetic value. Technological breakthrough: from energy saving to sustainable ecological closed loop ZC Lighting has always used technological innovation as its engine. Its patented technologies include: "Dual-circulation cooling system": Breaking through the bottleneck of traditional LED life, ensuring stable operation of products in an environment of -40℃ to 60℃; "Smart cloud control platform": Supporting remote monitoring, energy consumption analysis, and fault warning, helping customers achieve digital management; "Environmentally friendly material technology": The entire series of products comply with RoHS standards, 95% of the components are recyclable, and the green manufacturing commitment is implemented. According to estimates, customers who adopt ZC Lighting solutions can reduce electricity consumption by 30%-50% and thousands of tons of carbon emissions on average each year, truly achieving a win-win situation for economic and environmental benefits. ‌Global layout: lighting up five continents, serving over 100 countries‌ Currently, ZC Lighting's products have been successfully used in benchmark projects in more than 50 countries: from industrial bases in the extremely cold regions of Northern Europe to stadiums in the hot deserts of the Middle East, to urban roads in the hot and humid climate of Southeast Asia, ZC Lighting has won international recognition for its excellent adaptability and localized services. In 2023, the company has reached strategic cooperation with many Fortune 500 companies to jointly promote the construction of smart cities and zero-carbon parks. ‌Looking to the future: Intelligent and sustainable dual tracks‌ "We not only provide lamps, but also provide future-oriented light environment solutions." ZC Lighting CEO said. In the future, the company will focus on the research and development of ‌AIoT smart interconnection‌ and ‌photovoltaic integration technology, promote the deep integration of lighting systems and renewable energy, and create a "zero-carbon light network" ecosystem. ‌About ZC Lighting‌ ZC Lighting is a world-leading LED lighting solution service provider, committed to providing efficient, intelligent and sustainable lighting products for industry, municipal, commercial and sports fields through technological innovation and scenario-based design. With the mission of "Lighting up a green future", ZC Lighting will continue to lead the transformation of the global lighting industry. ‌Contact the ZC Lighting team now to get a customized lighting solution! ‌ Official website: www.zcleds.comEmail: info@zcleds.com

LED lamps have become the mainstream choice for tennis court lighting due to their energy efficiency, excellent light quality, fast start-up, no flicker, etc. LED lamps can significantly reduce energy consumption, provide a light quality closer to natural light, adapt to complex environmental conditions, and are environmentally friendly and non-polluting. With the progress of technology, the LED lighting system will be further optimized to enhance the overall effect of tennis court lighting and user experience. Each sport has distinct lighting needs. This is the reason why there are so many possibilities for field lighting. Tennis is one of the most popular and widely played sports. The sport is played on tennis courts. There are several sorts of courts, including outdoor and indoor, as well as small, medium, and large. If the outdoor/underground parking lot architectural lighting and tennis court lights are not built appropriately, it may result in a negative user experience and high energy costs. This is why you must invest in appropriate and high-quality tennis court lighting. To have the optimal lighting solution for a tennis court, you must have an extensive understanding of tennis court lighting. This article explains all there is to know about tennis court lighting. Have a look! 1. What is Tennis Court Lighting? Tennis court lighting consists of lights that provide enough illumination and evenly disperse light throughout the court. Lamp-side lateral illumination is present on both sides of the tennis court. In addition, two or three light poles are put on each side along the long axis. The tennis court must have the appropriate illumination regardless of the event or audience size. This is to ensure that everyone has a clear perspective of what is occurring. The ball should be plainly visible regardless of its speed or location. The tennis field lights will enhance the spectator experience and increase safety. It improves the performance of gamers by enhancing their eyesight. Good outdoor/underground parking lot and architectural lighting design also improve the lighting experience for walkers. 2. What Lights Are Used For Tennis Court Lighting? Tennis is a ball sport that is often played between two singles or two couples. On the tennis court, the player strikes the tennis ball with a racket over the net. Tennis requires considerable strength and quickness. Some elite tennis players can serve at speeds above 200 km/h. Because tennis is played at such a rapid pace, it is quite difficult to gauge its effect! This also significantly increases the challenge of tennis competition and imposes tougher and more professional lighting standards. 3. What kind of lighting is utilized to illuminate sports stadiums? As we see Federer, Nadal, Djokovic, Li Na, and other elite sportsmen play magnificently on the court, we too are ecstatic. On the tennis court, we will experience a variety of emotions. However, it will sometimes offer us a negative experience. For instance, if you go to particular courts at night to play, you will often be blinded by the lights, or there will be dark parts where you cannot see the course, which has a significant impact on your mood and condition. Why? Due to poor tennis court illumination. So, what kind of lighting should be used for the tennis court? With so many tennis court lighting options available, which should I select? Today, we will compare different lights typically used to illuminate tennis courts. 3.1 Metal halide lamp The metal halide lamp as a tennis court lighting fixture not only uses power but also has a fatal weakness in its delayed start-up. It takes 15 minutes to reach maximum brightness, and the start-up speed is really sluggish. Imagine that while your consumers are perspiring on the sports field, the lights restart due to a trip or accidental touch. The metal halide light is restarted after fifteen minutes. Do you believe it's possible for consumers to wait fifteen minutes? If this continues, your business hours will be delayed and your clients will be unsatisfied, resulting in customer loss and decreased operational earnings. 3.2 LED Tennis Court Light MK LED tennis court lighting is customized according to the unique features of the court, with an anti-glare design and anti-glare lampshade, high uniformity, low glare, comfort, and zero light pollution. The lamp body is built of high-quality aircraft aluminum profiles, and it employs phase change heat dissipation technology and air circulation design to assure heat dispersion. The light source utilizes imported LED chips of the highest quality, with great brightness, light color integration with the stadium, a long lifespan, and softer light. However, the quality of LED bulbs now available on the market ranges from decent to poor. For instance, 100W tennis court lights might cost anything from dozens to hundreds of dollars. As a customer, you must be vigilant. In terms of manufacturing methods and components, lights are comparable to many other commodities at that time. The variation in materials determines the pricing of items such as three, six, and nine. As with chips, it is believed that they all utilize a major brand, although there is a distinction between 3030 and 5050. 3.3 Tennis Court Professional High Bay Lighting LED high bay lighting is often used to illuminate indoor tennis courts. MK LED High Bay light takes pride in the straightforward installation and purchasing of its products. LED High Bay BD installation choices are adaptable to any application. Additionally, it is appropriate for ceiling heights between 15 and 40 feet. In conclusion, for the selection of tennis court lighting fixtures, varied venue settings and positions will need distinct illumination requirements. The following are worldwide lighting regulations for tennis courts for your reference: Tennis Court Lighting Standards For Entertainment And Fitness Classification Eh (lx) Eh   Uniformity GR max Ra TCP (k) U1 U2 PPA TPA PPA TPA PPA TPA Outdoor Tennis Court Standard 150 125 0.3 0.2 0.6 0.5 50 ≥65 4000 High Grade 300 250 0.3 0.2 0.6 0.5 50 ≥65 4000 Indoor Tennis Court Standard 250 200 0.3 0.2 0.6 0.5 50 ≥65 4000 High Grade 500 400 0.3 0.2 0.6 0.5 50 ≥65 4000 Outdoor Tennis Court Lighting Standard Classification Eh (lx) Ev (lx) Eh   Uniformity Ev   Uniformity Ra TCP (K) U1 U2 U1 U2 PPA TPA PPA TPA PPA TPA PPA TPA PPA TPA PPA TPA Training 250 200 － － 0.4 0.3 0.6 0.5 － － － － ≥65 4000 Domestic   competition 500 400 － － 0.4 0.3 0.6 0.5 － － － － ≥80 4000 International   competition 750 600 － － 0.4 0.3 0.6 0.5 － － － － ≥80 4000 Camera distance 25m － － 1000 700 0.5 0.3 0.6 0.5 0.5 0.3 0.6 0.5 ≥80 4000/   5000 75m － － 1400 1000 0.5 0.3 0.6 0.5 0.5 0.3 0.6 0.5 ≥80 4000/   5000 HDTV － － 2500 1750 0.7 0.6 0.8 0.7 0.7 0.6 0.8 0.7 ≥90 4000/   5500 Remark: PPA-main competition area, TPA-total competition area; For the tennis semi-finals broadcast on TV, the illuminance level of the semi-final total competition area should be based on the value of the main competition area. 4. What is the size of the Tennis Court? International Tennis Federation regulates the dimensions of tennis courts (ITF). Typically, the court is 78 feet long, 27 feet broad, and 36 feet wide for singles matches and doubles matches, respectively. When it comes to installation, it is advised that the poles be at least 8 meters tall. In the case of official competitions, the height of the poles must be at least 12m. 5. Lux Requirements for Tennis Court Lighting The illumination of the tennis court depends on the court's characteristics. Class I, Class II, and Class III are the different levels of competition. 5.1  Class I: National and International For such contests, 450 lux is necessary because of the high level of play. 5.2 Class II- Club Competition and Commercial Illumination for commercial and club tournaments should be around 350 lux. 5.3 Class III- Residential and Recreational Properties It requires a low level of play, so 250 lux is more than enough. ZC Lighting provides an extensive selection of tennis court lights for installation. Regardless of the type of your court, you can discover the ideal tennis court lighting. 6. Lighting design of Tennis Court 6.1 Best Solution 2022 for Tennis Court Lighting According to our years of expertise in lighting design, the typical height of tennis court light poles is between 6 and 8 meters (20 ft -26.7 ft). Depending on the stadium's lighting needs, the wattage of court lights is typically between 300 and 500W. The following solution is provided for reference purposes. 8 poles (6m/20ft)  Standard tennis court (36*18m/120*60ft), installed 8PCS MK LED 400W to achieve average lux 783lux. 6 poles (8.7m/29ft) Standard tennis court, put 6PCS MK LED 300W to achieve average lumen 500lux. Standard tennis court, put 6PCS MK LED 200W to achieve average lumen 300lux. 4 poles (12m/40ft) Standard tennis court, installed 4PCS MK LED 500W to achieve average lux 419lux. Standard tennis court, installed 8PCS MK LED 300W to achieve average lux 489lux. 6.2 Brightness of Tennis Court Light Brightness is the fundamental need for tennis court lighting. The court must be well illuminated so that players and spectators can see clearly. Numerous courts use HID floodlights to illuminate the whole area. They may be affordable, but additional lighting must be added. The LED lights are superior to HID lights because they provide more degrees of brightness. Technically, the maximum power of LED lights is 10,000 watts, but the maximum power of metal halide lamps is just 1,500 to 2,000 watts. 6.3 Efficiency of Tennis Court Ligwell-illuminatedht Another requirement for tennis court lighting is its efficiency. Since the light will be on for most of the day, the energy bills will be rather high. This is where LED lights are useful; they are noted for being energy efficient. Luminous efficacy is used to determine the effectiveness of a light source. Lm / W is the unit used to assess effectiveness, where lm represents lumen. Remember that the higher the lumen, the greater the brightness. The luminous efficacy of LED lights is between 130 and 160 lm/W, whereas metal halide has between 75 and 100 lm/W, HPS has between 90 and 100 lm/W, and halogen has between 10 and 20 lm/W. This indicates that for every watt of power used, an LED light will output 150 lumens. Therefore, LED lighting will save more power than any other lighting technology. 6.4 Life Span of Tennis Court Light The lifespan of the light is one of the most significant things you must consider. Because the courts are open until late at night, the lights must have a lengthy lifespan. If a light has a limited lifespan, it will need to be replaced regularly. This not only raises maintenance and replacement costs but also operating expenses. Outdoor/underground architectural and tennis court lighting installation is expensive. LED lighting has a long lifespan, since it may last up to 100,000 hours. Halogen light, on the other hand, will only last for 2000 hours, but metal halide may survive for up to 10,000 hours. Consequently, LED lights provide the highest performance. 7. What Should I Pay Attention to Before Buying Tennis Court Lights? When purchasing tennis court lights, how to buy the best tennis court lights, and what issues you need to pay attention to, here are the factors you need to consider. 7.1 Waterproof The waterproof characteristics of the lamp should be one of your first considerations. It is essential that the lamp has at least IP64 water resistance. Thus, these lights may be used anyplace. Due to the absence of gas discharge, brittle glass, and filament, LED lighting may be made to be waterproof without any difficulty. 7.2 Superior Luminous Efficiency To save maintenance costs, you must choose a long-lasting and high-quality LED light. To choose an efficient LED light, you must choose a luminaire with a high-efficiency rating. This implies it will use less energy and emit less light. 7.3 Variable Color Temperature In order to get the appropriate LED light, you must examine the color temperature. The suggested color temperature range for cool white is 5000 to 6000K. Some tennis courts need a light with a color temperature between 2800 and 3500K. 7.4 Anti-glare Feature The anti-glare function is one of the most essential aspects of the LED light. The strong light that causes annoyance or pain is the glare. The anti-glare lens of the LED Lucky lights lessens the dazzling impact and facilitates visibility. 7.5 Heat Dissipation Heat dissipation is a further crucial component. It is essential for indoor tennis courts since the light's lifespan might be diminished if heat is trapped within. 7.6 High Light Uniformity In order to brighten the tennis court, it is essential to have a high degree of light homogeneity. This indicates the ratio of lowest to highest lux. Generally, 0.6 to 0.7 light uniformity is sufficient. 7.7 Easy to Install LED lights are simple to install, requiring neither expert assistance nor specialized tools. 7.8 Modularization Design LED lights have to have a modular design since it facilitates maintenance. You will not have to remove the whole fixture to make repairs. 7.9 Warranty Few individuals consider the warranty of LED lights. This is a huge mistake. Before purchasing, it is recommended to investigate the manufacturer's warranty. MKLIGHTS provides (insert year) a warranty on every tennis court lighting. 8. What is the price of tennis court lights? Let us take the FE series tennis court as an example, the approximate price is as follows: Power Lumens Unit Price 200W 29000 LM US$120.00 400W 58000 LM US$230.00 600W 87000 LM US$330.00 800W 116000 LM US$430.00 1000W 145000 LM US$530.00 1200W 174000 LM US$640.00 Different configurations have different prices, if you need to know the exact price, please contact the MK sales team. 9. What is the Cost of Installing LED Lights in a Tennis Court？ 9.1 Tennis court lights installation cost In recent years, several tennis facility operators have installed contemporary LED systems. The cost of installing LED tennis court lighting varies from $30,200 to $233,200 per court, depending on product quality, the required brightness of the floodlights, and regional variations. The factors that affect the ultimate pricing of a tennis lighting installation project are explained in full below. 9.2 LED retrofit cost for tennis court lighting Since you may utilize part of the existing lighting infrastructure, upgrading to LED lighting by converting your current HID lighting system is a simpler and less expensive undertaking. The conversion to LEDs is accomplished either by replacing existing lighting fixtures with LED fixtures or by installing solely LED lights. The cost per court to upgrade a HID tennis lighting system with LEDs varies from $16,400 to $44,600. Whether you are renovating an existing facility or constructing a brand-new one, the purchase price is not the only factor to consider. The true economic worth of LED tennis lighting systems is seen in their running expenses: cheaper power bills, less frequent bulb replacement, less maintenance and upkeep, fewer repairs, and fixture replacement. Ultimately, the cost to run an LED tennis lighting system is determined by the level of competitiveness, the efficacy of the lighting fixtures (lumens per watt), and the price of power in your state. Are you planning to install or enhance your sports facility's LED lighting? Utilize our tennis court lighting cost calculator to get a personalized estimate of costs: a. Installation of a LED lighting system for a new tennis court b. Upgrade existing tennis court lights to LED Tennis LED Sports Lighting System, Poles,   Control system $16,400 - $168,000 Installation of poles $4,000 - $24,000 Installation of fixtures $6,200 - $28,000 Wiring from contractors to poles $2,400 - $9,800 Structural engineering $1,200 - $3,400 Total $30,200 - $233,200 10. Conclusion Therefore, lighting is a crucial aspect of a tennis court since the ability of the players, the quality of the experience, and everyone's safety rely on it. When it comes to selecting the optimal lighting solution, LED light is the superior alternative. It provides the ideal amount of luminosity, homogeneity, energy efficiency, and longevity. ZC lighting provides superior LED lights to illuminate the tennis court. We have an assortment of LED lights that are appropriate for all sorts of tennis courts. For further details, please visit our website.

The LED street light layout plan mainly includes lamp selection, layout design, and energy consumption assessment, aiming to improve lighting effects, ensure residents' safety, and reduce maintenance costs. Introduction Street light LEDs should be installed alongside or in the middle of the road or suspended from wires above the road to provide lighting. Because the road conditions in these areas are more complicated, street lighting is also required at intersections and roundabouts. On roads or highways with lighting needs, street lighting can provide a safer, more comfortable, and more convenient environment for vehicles and pedestrians to move about at night. In addition, street light LED should be effectively managed to facilitate future maintenance, replacement, or renewal to provide long-term lighting services for traffic flow and pedestrians. Below, we list several important roles of street lighting. Reduce the risk of accidents at night Fight against crime Assist in the protection of buildings/property Creating a safe and pleasant living environment Stop vandalism Importance of street lighting design In the previous section, we talked about the importance of street lighting. So how can we have the right street lighting effect? We think street lighting simulation is essential. Street lighting design involves selecting and installing lighting equipment ( View more about the case study of Street light LED) to maximize visibility and increase safety while meeting users' needs with minimal energy consumption. A reasonable street lighting design, ZC Lighting believes, should include the following two points: 1. The choice of lighting standards, here mainly refers to the road illumination, brightness, glare, uniformity, and so on. 2. Implementation of road lighting simulation to confirm suitable lamps, pole arrangement, pole height, pole spacing, pole arm, tilt angle, setback, etc. If you don’t know about point 1, we recommend checking out another blog regarding street lighting design. For the latter, ZC Lighting believes that the choice and setting of street light LED and street light poles have a significant impact on the appearance of road schemes/ city construction, and we should plan street lighting as a whole at the initial stage. In addition, in historic towns and protected areas, particular attention should be paid to the aesthetic qualities of street lighting design and installation, while equal care should be taken to avoid light pollution, especially in rural areas. Luminaire arrangement of street lighting There are four basic types of street lighting arrangements for motorways or highways, which we describe as below. Single-sided arrangement(arrangement at only one side, upper side or bottom side） Single-sided arrangement, that is, all lamps are located on one side of the road, and should be used when the width of the road is less than or equal to the installation height. This type of lighting arrangement is usually suitable for narrower roads. Usually the installation height is lower at about 6 meters (20 inches). In addition, as the lens design of street lamps becomes more and more sophisticated, this type of lighting can sometimes be used to illuminate wider roads. Staggered arrangement(two-sided arrangement offset) Staggered arrangement, when the road width is equal to 1 to 1.5 times of the installation height, the lamps are alternately placed on both sides of the road in a “zig-zag” or staggered style. This type of lighting arrangement is usually suitable for medium-sized roads. Practice has proved that the lighting effect (uniformity) of a staggered street lighting arrangement is often improved without increasing the height of the pole. Opposite arrangement(two-sided arrangement) In the opposite arrangement, the lamps are placed opposite each other along the front of the road. When the width of the road is greater than 1.5 times the installation height, it is more suitable to go with this arrangement. The opposite arrangement is usually suitable for medium to wide roads. This kind of lighting arrangement is very common on main roads, mainly because of its convenient construction and excellent lighting effects. Twin central arrangement(median arrangement) In a twin central arrangement, the lamps are installed on the T-shaped mast in the middle of the central island of the road. When the road width is less than or equal to the installation height, the installation height of the lamps should be used. This type of lighting arrangement is usually installed on taller poles and large roads. This type of light distribution method often requires a wide isolation island on the road, which facilitates the installation of light poles and distribution boxes. Street light height Street light LED are installed on high lamp posts. And the roadway light poles are generally in 4 meters(13 feet), 6 meters(20 feet), 8 meters(26-27 feet), 10 meters(33 feet), 12 meters(40 feet). Below, we list the different. The height of the light pole is generally the application place. 10-20 feet, suitable for residential areas, park roads, and country roads 20-27 feet, suitable for most urban roads, commuter roads between urban and rural areas 27-33 feet, suitable for urban main roads, expressways, and highways, etc. 33-40 feet, suitable for wider roads with high traffic flow, road intersections Proper Placement of Pole Pole distance from the roadway(Setback) This is the distance from the light pole to the road. Because the street lights are generally set on the outside of the street curb, the light poles have a certain horizontal distance from the motor vehicle lane or the non-motor vehicle lane. This horizontal distance is also usually called a setback. For most arrangements, setbacks will choose 1 foot to 2 feet. Light poles that are too close are not suitable for installation and are easily affected by accidental traffic accidents, which in turn can cause more accidents. Too far away, and the lighting effect (light level and uniformity) is reduced, and even further distances from the fixture create shadows at low light levels. For the twin central arrangement, the setback is half the width of the isolation island. Pole Boom(Arm) Length The use of arms brings the light source closer to the road while keeping the poles positioned away from the edge of the road. Depending on the application, the arm may be a single and/or double arm or a davit arm on top of the pole. There are several different arm lengths and styles of arms used. Single arms are typically available in 1.5m, 2m, and 2.5m lengths. Double arms, arms face 180° apart and are used to illuminate the opposite lane of a two-way lane. Overhang Overhang is the horizontal distance from the center of the light fixture mounted on the bracket (poles) to the edge of the driveway. In general, the overhang should not exceed a quarter of the installation height to avoid reduced visibility from shoulders, obstacles, and sidewalks. In addition, due to the influence of the trees on the road, the overhang will be increased to reduce the influence of the trees on the road. Also, additional street lights should illuminate the sidewalk. Boom Tilt Angle (Boom Angle) The boom tilt angle is the angle between the luminous surface and the horizontal plane (the surface parallel to the ground). Normally, the larger the tilt angle, the higher the uniformity in general. In the past, there would be a tilt angle during actual road installation, which was relatively large and had corresponding problems. The uncomfortable glare increases as bright light enters the driver’s eyes. Therefore, Hylele recommends that the tilt angle should be kept below 15 degrees. As more and more project parties require zero uplight, this angle is usually 0. Thanks to the improvement of the lighting distribution, Hylele street lights are often installed on light poles with a 0 tilt angle. Even if the tilt angle is 15 degrees, by adjusting the fitter, we can achieve 0 degrees to reduce the impact on the natural environment. Pole to Pole distance(Spacing) Spacing is the distance between two consecutive luminaires along the centerline of the road. Usually spacing equal to 3 to 4.5 times is suitable for many road lighting projects. The smaller the pole distance, the better uniformity can usually be obtained, but we will need more light poles, which is not conducive to controlling the cost of the project. The longer the poles distance, the poorer the uniformity, because the illumination and brightness are often lower in places farther away from the lamps, which can easily cause discontinuity in lighting and affect traffic safety. Taking an 8-meter light pole as an example, we generally recommend that the distance between the light poles is about 30 meters (single side lighting). If it is installed on the opposite side or staggered, the distance can be increased to 35 meters or more. Below we have attached a pictures shows the setback, boom length, overhang, boom angle, spacing which gives a profound image of these parameters.  

Traditional street lighting systems consume large amounts of energy, resulting in high electricity costs and frequent maintenance. Without switching to energy-efficient alternatives, cities will continue to face financial pressures and environmental concerns. Energy Performance Contracting (EPC) for street lighting offers a practical way to improve efficiency and reduce costs. An Energy Performance Contract (EPC) is a financing model in which an Energy Service Company (ESCO) upgrades a street lighting system to an energy-efficient solution and guarantees the savings. The ESCO is responsible for the upfront costs, which are repaid by the customer through energy savings. This approach reduces financial risk, reduces energy consumption, and improves lighting quality, making EPCs ideal for municipalities, businesses, and industries looking for cost-effective, sustainable lighting solutions. Introduction Street lighting can account for 30-50% of a city’s total electricity consumption. In recent years, LED street lighting technology has offered high cost savings and relatively short payback times. The introduction of new technologies will inevitably lead to the elimination of traditional lamps. Our preliminary estimate is that by 2030, nearly 90% of the currently used street lamps will be phased out, which means that they will not be available in the market. Municipalities, therefore urgently need to act. In most cases, LED luminaire replacement requires high investment, which is a significant problem for many cities. Here, energy performance contracts (EPCs) are a viable solution: Energy efficiency investments are pre-financed and implemented by energy service companies (ESCOs). Annual savings in energy and maintenance costs cover investment and capital costs. The EU project Streetlight EPC, funded by the Intelligent Energy Europe Programme, was launched in April 2014 to trigger market uptake of EPC through street lighting renovation projects. In this project, guidelines for the implementation of street lighting EPC projects were prepared for municipalities and ESCOs. They are available in their respective languages and the specific context of the project area (including Germany, France, Italy, Austria, Czech Republic, Poland, Ireland, Sweden, Slovenia, Macedonia, and Spain). LED technology has developed very rapidly over the past few years. In many cases, LED street lights are now a very economically interesting street lighting retrofit option. The advantages of LEDs include high energy efficiency, long life (about 50000-100000 hours), low maintenance costs, and high flexibility of dynamic light control systems. They also provide. It provides better light color selection and allows precise light direction (suitable for animals’ nightlife). These advantages make LED street lights have good feasibility in EPC projects. However, these benefits can only be obtained if the overall system is well planned. This document summarizes the information in these guides in English. Why choose EPC – benefits of EPC project The main obstacle faced by most cities in Europe is the significant upfront investment required to replace street lighting with LED technology. In many cases, Energy Performance Contracts (EPCs) can provide a solution to overcome this barrier. An EPC is a contractual arrangement between a client, such as a municipal authority, and an Energy Service Company (ESCO) that provides energy efficiency measures. The ESCO funds and implements energy efficiency investments, such as retrofitting the street lighting system of an entire city or selected projects with LED technology. The ESCO guarantees energy savings, and the municipal authority uses the energy savings generated each year to repay the ESCO’s upfront investment and capital costs. After the contract period ends, the client (municipal authority) benefits from the energy and cost savings. From this, we can see that EPCs provide the necessary funding for LED replacement projects and, if necessary, also offer technical expertise and manpower. It is a low-risk approach to financing and delivering energy efficiency improvements and renewable energy projects. Despite the enormous potential of EPCs, many regions have yet to witness significant development in the EPC market. Therefore, it is necessary to explain EPC projects. Currently, the adoption of street lighting retrofitting through EPCs provides a good “learning platform,” and the pressure to phase out outdated streetlights presents a unique opportunity for the development of the EPC market. The “Street Lighting EPC” project, funded by the European Intelligent Energy Programme, was launched in 2014. Therefore, we will use the application of LED streetlights in contract energy management as a starting point to provide a detailed introduction to the relevant knowledge of EPCs. Steps in preparing and implementing a streetlight EPC project An Energy Performance Contract (EPC) is a method of managing and optimizing energy usage through contract agreements. It can help organizations achieve energy efficiency, reduce energy costs, and minimize environmental impact. Here are the general steps involved in contract energy management for road lighting applications: Information gathering and assessment Firstly, evaluate the areas in the city where lighting fixtures need to be replaced on the roads. This includes assessing the current status of the existing fixtures, such as the quantity, operational status, wattage, dimming capabilities, and pole conditions. Understand the energy (electricity) consumption of the replacement fixtures, potential energy-saving solutions, and the road conditions. Setting energy-saving goals With information on lighting fixtures, roads, and lamp posts in the area, we can calculate the wattage, quantity, lighting distribution, and other of the fixtures. This information can be used to determine the level of energy savings, and in combination with control systems such as timed dimming and smart controls, we can establish clear energy management goals. Finding ESCO partners Choose suitable partners, such as Energy Service Companies (ESCOs) or energy consulting firms, to assist in implementing the energy management plan. Based on the information from the previous steps, they will finalize the lighting solution ( View cobra head light fixture solution case ), including the number of fixtures, wattage, dimming, smart controls, and maintenance costs. Contracts will be signed between the municipal authorities and the partner ESCOs, clearly defining the responsibilities and obligations of both parties, including energy management goals, energy monitoring and reporting, rewards, and risk-sharing. Implementing energy-saving measures The partners will provide professional energy management services, such as energy monitoring, energy efficiency improvements, equipment maintenance, and optimization, to achieve the energy-saving goals. Regular monitoring of energy consumption, data collection, and report generation will help evaluate the effectiveness of the energy-saving measures and make timely adjustments to the plan. Key criteria (technical specifications) for a street lighting refurbishment project In the Energy Performance Contract project, we should pay attention to the following parameters of LED street lamps: Electrical power (wattage), luminous efficacy (light output = wattage x luminous efficacy), light color, expected service life, the control system (incl. ability to switch-on/switch-off and dimming), lighting distribution, heat dissipation, warranty period, datasheet and test certificates(such as EMC, LVD and structure). Taking into account the aforementioned parameters, the selection of LED street lights that align with project requirements and energy performance goals can contribute to enhanced lighting effects, energy savings, and reduced operational expenses. Let’s talk about them one by one. Wattage and lumen output The primary advantage of using LED solutions in EPC projects is their high energy efficiency. LEDs can often achieve the desired level of luminous flux while operating at lower wattages. This ensures that LED street lights can provide sufficient brightness for road lighting while maximizing energy savings. By utilizing the lowest wattage (lumen output) possible, more energy can be conserved, reducing the time required to recover the upfront investment of the EPC. Finally, it is important to clarify whether the lumen output refers to the LED chip or the entire LED luminaire. Here is an example of the average lux level for a 20W LED light at different installation heights: CCT and CRI Color temperature refers to the color of light emitted by LED lamps. In road lighting, the commonly used color temperature range is from 3000K to 5000K. Choosing the appropriate color temperature based on road and environmental requirements can provide comfortable lighting effects. Currently, lower color temperatures(2200K) are becoming increasingly popular, but it’s important to note that lower color temperatures often result in slightly lower light efficiency for LEDs. CRI (Color Rendering Index) is a metric used to measure the ability of LED lights to reproduce the colors of objects. A higher CRI value indicates that LED lights can more accurately render the colors of objects. In road lighting, selecting LED street lights with higher CRI values can enhance visual effects and safety. However, it is also important to consider that higher CRI values often mean slightly lower light efficiency for LEDs. Therefore, CRI 70-80 is a suitable range for road lighting applications. Luminous efficiency In EPC projects, the light efficiency of lighting fixtures is considered, which refers to the amount of visible light produced per unit of power consumed. Light efficiency is associated with the energy efficiency standards of LED street lights and is an important indicator of their energy utilization efficiency. Choosing LED street lights with high light efficiency can reduce energy consumption and achieve energy savings. Although high light efficiency may result in higher upfront costs for the fixtures, in EPC projects, higher light efficiency means greater energy savings, allowing the saved energy to cover the initial investment as quickly as possible. Lifetime and maintenance Understanding the lifespan of lamps is crucial, and LED lamps generally outlast traditional lamps. Long-life LED street lights not only reduce maintenance and replacement costs but also provide reliable lighting effects. Manufacturers typically promise a service life of up to 100,000 hours, which usually refers to the lifespan of LED components. LED power supplies are assumed to have a very low probability of sudden failure What if we can prove that the LED components can reach a lifespan of 100,000 hours? The main measure is the luminous flux attenuation rate. The luminous flux gradually decreases during the product’s service life. To ensure the lighting system meets the required standards, we need to select LED street lights with a higher wattage (higher luminous flux) during installation. Therefore, a lower luminous flux attenuation rate is more suitable for LED street lights. For example, “L70B50“>100,000 hrs means that “L70”>100,000 hrs, indicating that the lamp will still emit at least 70% of the light at the end of the specified 100,000-hour lifespan. Similarly, “L90B50”>100,000 hrs means that “L90”>100,000 hrs, indicating that the lamp will still emit at least 90% of the light at the end of the specified 100,000-hour lifespan. The latter option is more suitable for our EPC project. In this case, we only need to set the initial luminous flux of the lamp to the target luminous flux divided by 0.9. However, for the former option, the coefficient of 0.9 should be changed to 0.7 when selecting the luminous flux of the lamp. This means more wattage is required to maintain the required illuminance/brightness of the road throughout the project cycle and meet the corresponding lighting standards. Alternatively, an electronically controlled luminous flux compensation system can be used. This system keeps the luminous flux approximately constant during the device’s service life. For more information, please refer to the CLO function. Lighting distribution Lighting distribution refers to the way light spreads or disperses in an area or space. It encompasses the pattern and uniformity of light emitted from a lighting fixture and how effectively it illuminates the intended target area. Proper light distribution ensures that the lighting device provides even and uniform light coverage in the designated area, enhancing visibility and safety for pedestrians and motorists. Different road conditions may require different light distributions, meaning that street lights with the same lumen output but different lighting distribution can have varying lighting effects on the same road. This aspect is also a key factor in assessing the energy efficiency (energy-saving efficiency) of lamps. Additionally, appropriate light distribution contributes to visual comfort by reducing glare and enhancing aesthetics. Thermal management A portion of the electricity consumed by an LED is converted into heat. Effective heat dissipation is crucial for extending the lifespan of the LED and is therefore an important quality attribute. Therefore, it is necessary to use high-power LEDs that are equipped with suitable cooling fins or other heat dissipation components. Dimming and remote control If conditions permit, LED street lights can be equipped with dimming and control functionality, allowing for adjustable lighting levels based on specific needs. Common dimming methods include photocell control, Motion Sensors, Time-Based Dimming, and intelligent control systems. These technologies either turn off unnecessary lights or reduce the lighting level during periods of low nighttime traffic, resulting in further energy savings. Photocell Control: Consider whether the LED street lights support photocell control technologies such as light sensors or time controllers. These technologies enable the adjustment of lighting brightness or timing as needed, leading to additional energy savings. Motion Sensors: By incorporating motion sensors into LED street lights, they can detect movement and adjust the light output accordingly. When no activity is detected, the lights can dim or turn off, reducing energy consumption. Time-Based Dimming: Lighting control systems can implement dimming based on specific time schedules. For example, during periods of minimal nighttime traffic, the lights can be dimmed, while brightness can be increased towards morning to ensure driver safety. By doing so, the lights don’t need to output at 100% throughout the entire night, resulting in reduced energy consumption without compromising safety. Remote Control and Monitoring: LED street lights with remote control and monitoring capabilities can be centrally managed and monitored within a lighting network. Common applications include technologies like Zigbee and LoRa, which allow for real-time brightness adjustment and provide real-time monitoring of energy consumption, fault detection, and performance analysis. While these technologies are valuable for EPC projects, it’s important to note that they come with relatively higher costs. Warranty and spare parts The warranty period and availability of spare parts should be clearly defined. The warranty period for LED street light projects should be explicitly stated, as it represents the supplier’s and ESCO’s commitment to quality control and performance assurance of their products. It establishes the responsibilities and rights of both parties and helps the municipal authorities manage risks effectively. Moreover, ensuring the availability of spare parts throughout the planned lifespan of the luminaires is crucial. This ensures smooth maintenance of the luminaires and minimizes additional costs. In EPC projects, modular structures are preferred as LEDs and electronic modules can be easily separated, eliminating the need to replace the entire luminaire in case of a failure. Datasheet and certificates Previously, we mentioned the meanings and requirements of wattage, luminous flux, luminous efficacy, color temperature, expected lifespan, control systems (including photocell, dimming, smart wireless control), and warranty. We believe that municipal authorities should request a specification sheet from the ESCO that includes these parameters, as well as certificates or reports proving that the luminaires meet the respective requirements. This ensures that the lighting solution complies with the required quality and performance standards. Summary Street lighting plays a crucial role in ensuring traffic and public safety, but it consumes a significant amount of electricity and requires substantial funding. In cities with outdated and inefficient systems, street lighting can account for 30-50% of the total electricity consumption. To address the financial challenges associated with street lighting, the adoption of LED street lights with an Energy Performance Contracting (EPC) solution has proven effective. This article focuses on the rationale for choosing EPC, key considerations for EPC implementation, and important factors to consider when applying EPC to LED road lighting. These insights serve as valuable guidance for suppliers, Energy Service Companies (ESCOs), and municipal authorities. Suppliers are encouraged to provide ESCO's and municipal authorities with efficient and reliable LED lighting products that meet their requirements. ESCO, in turn, should ensure that the selected LED luminaires perform as expected by assessing their performance throughout the project and conducting necessary maintenance activities. By collaborating with ESCOs, municipal authorities can enhance energy efficiency in urban lighting, thereby delivering high-quality lighting services to citizens that adhere to energy efficiency standards and regulatory requirements.  

At present, China is creating a resource-saving and environment-friendly society, and the concept of "green lighting" is gradually gaining popularity. With the continuous advancement of science and technology and the rapid development of semiconductor material application technology, low-power LED light sources have been widely used in landscape lighting, and high-power LED street lights have attracted more and more attention from all aspects. These two technologies are completely different methods of producing light. Sodium vapor bulbs contain metals that evaporate into an inert gas within a glass envelope, while LEDs are a solid-state technology. Both technologies are extremely efficient. The difference is that sodium vapor lamps were the most efficient technology in the 1970s, while LEDs are the most efficient technology today. Although sodium vapor lighting beats nearly every other technology in terms of energy efficiency (which is why it was chosen to light up many city streets), it loses out to LEDs. Both LEDs and sodium vapor lamps emit electromagnetic radiation within a small portion of the visible spectrum, but LEDs waste far less energy as waste heat, and they also offer users an incredible variety of high color rendering index options (thus eliminating the monochromatic black appearance of objects illuminated by LPS and HPS bulbs). The biggest difference between LED lamps and high-pressure sodium lamps is the color temperature and color rendering index. LED lights have a wider range of color temperatures as well as a higher color rendering index. LED area lights have easier intrinsic than high-pressure sodium lamps. 1. Comparison of luminescence principle 1.1 The luminous principle of LED lights LED (Light Emitting Diode), a light-emitting diode, is made of III-IV group compounds. It is a solid-state semiconductor device that can directly convert electricity into light. The heart of the LED is a semiconductor chip. The semiconductor chip is composed of three parts. One part is a P-type semiconductor, in which holes dominate, and the other end is an N-type semiconductor. The electrons and holes will be pushed into the quantum wells when the current acts on the chip through the wire. In the quantum wells, the electrons recombine with the holes and then emit energy in the form of photons. This is the principle of LED light emission. The wavelength of light is also the color of light, which is determined by the material forming the P-N junction. 1.2 The luminous principle of the HPS lamp The high-pressure sodium lamp uses electricity to generate an arc between the electrodes at both ends of the arc tube. Due to the high arc temperature, the sodium amalgam in the tube is heated and evaporated into mercury vapor and sodium vapor. The electrons emitted by the cathode impact and discharge during the movement to the anode. The atoms of the substance gain energy to produce ionization or excitation and then return from the excited state to the ground state or change from the ionized state to the excited state and then return to the ground state in an infinite loop. At this time, the excess energy is released in the form of light radiation. Then there is light. High-power street lighting is a new type of lighting method that realizes lighting needs by illuminating the LED group by DC low voltage. It has the characteristics of high brightness and good color rendering. In addition, because the input of street lighting is low voltage DC, it can be. The combination of solar energy makes solar outdoor LED street lights a possibility for road lighting in the future. 2. About energy efficiency analysis and comparison The lighting installation power of the two should be compared on the premise of reaching the same illuminance (brightness) level and similar lighting quality standards. Because the high-power tube (250~400W) of the high-pressure sodium lamp has high luminous efficiency, it can reach 130~1401m/W, while the luminous efficiency of the low-power tube (100~150W) is about 80~100 lm/W, while the current high-power LED 1W LED tubes are mostly used in led street lamp, and their luminous efficiency is much higher. Therefore, it is advisable to analyze high-power LED road lights and low-power street lamps separately. 2.1 High-power (≥250W) street lamps High-pressure sodium lamps have high lighting efficiency, considering three factors: ballast loss, lamp efficiency, and light channel utilization. If the overall efficiency is calculated as 0.55, the effective light efficiency of the sodium lamp is about 70~75 1m/W; and the effective luminous efficiency of outdoor led light street, the best domestic enterprise has reached 1701m/W. Therefore, for high-power street lamps, LEDs are much more energy-efficient than sodium lamps. 2.2 Low-power (≤150W) street lamps The effective luminous efficiency of sodium lamps (included in the overall efficiency of 0.55) is about 45~551m/W, while the led road light is still calculated at 170 lm /W, the LED can achieve 75% energy saving than sodium lamps. Up to 80%. 3. Analysis of the light color of the light source on the road lighting effect The correlated color temperature (Tcp) of the high-pressure sodium lamp is about 2100K, which is a warm color temperature, and its color rendering index (Ra) is only 23~25, and the color rendering is low; and the color temperature currently used by outdoor led street light is mostly 4500K-5300K, which is a cool color temperature. A better product, its Ra can reach 70~80, and its color rendering is good. As a fast lane and main road for motor vehicles, the sodium lamp with a yellowish light is slightly better than the white light for seeing the road conditions about 90~160m ahead, especially for foggy and dusty air conditions. It has advantages. For sidewalks, commercial pedestrian streets, residential quarters, and other roads, the color rendering of LEDs is better than sodium lamps, distinguishing people's conditions more clearly, and has advantages. 4. Economic analysis and comparison High-pressure sodium lamps are about USD150-200 per set; at present, the street light cost varies greatly according to the power size, which is about USD 80-300. As far as the status quo is concerned, LED street light fixtures are slightly more expensive. However, LED can save energy by 75%. Replacing the original 150W high-pressure sodium lamp with an led streetlight saves about 500KWh of electricity per lamp every year, which can recover the extra cost of lamp purchase. Normally, the cost can be recovered in 1-2 years, and the LED lamp has shown good economic efficiency. Looking to the future, with the gradual improvement of the light efficiency of LED road light sources, the overall lighting efficiency of the lamps will increase accordingly, and the energy-saving performance will be better. Street lamps will be popularized with low power. The price of LED streetlights will also be reduced, gradually eliminating traditional light sources. 5. Service life analysis The comparison service life should be based on the whole lamp life. High-pressure sodium lamps include light sources, electrical accessories (mainly ballasts and triggers), and lamps. Sodium lamps are used for street lamps with an average life span of 1 to 3 years. Energy-saving inductive ballasts will not be less than 20 years, and the same is true for lamps. The service life of the LED streetlight has been used. Existing domestic companies have done their best to guarantee the life of the lamps to be about 100,000h. The road lighting can be used for more than 20 years if it is used for 12 hours per day. So, overall, the service life of an LED streetlight is much longer than that of traditional sodium street lighting. 6. Maintain performance comparison Users represented by urban street light management departments are more concerned about the maintenance performance of LED road lights. According to the analysis, the maintenance performance of the sodium lamp is good. The lamp only needs to be scrubbed and does not need to be replaced. The ballast is rarely replaced. The light source is replaced every 1 to 3 years, which is very inconvenient. In addition to the occasional damage to the power supply during the service life of the road lamp, almost no maintenance is required. For areas with harsh environments, only the surface of the luminaire needs to be cleaned regularly to ensure the normal operation of the luminaire, and there are now mature modular LED road lights. Appears maintenance and replacement are simple, and the cost is very low. Outdoor LED street lights already have standards to follow, and there are guarantees for bidding, ordering, use, and maintenance. In summary, we believe that outdoor LED street lights have become mature, and with the development of the LED industry, there will be greater development and broad prospects. 7. Luminous efficiency The luminous efficiency of the LED light source, the LED street lighting effect produced by Hylele, can reach up to about 170 Lm/w. The luminous efficiency of the high-pressure sodium lamp light source is about 100Lm/w, and the luminous flux emitted per w is 40-80Lm/w lower than that of the LED. The luminous efficiency of a 400-watt high-pressure sodium lamp is as high as 120Lm/w.  8. Fog permeability In road lighting, there is a big misunderstanding about the penetration of street lighting in heavy fog. Most people have always believed that the penetrability of LED street lamps is lower than that of traditional sodium lamps, which is a misconception. Most people see some information from the Internet or see some sensory feelings on the road without scientific evaluation and analysis, so they think that the light penetration of street lighting is poor. In this article, we will make a scientific analysis of this situation. We all know that the range of visible light is between 380nm and 780nm, and light in this range can be accepted and recognized by the human eye. All lamps and lanterns have use-value only in the range of this waveband, and the human eye cannot recognize it outside this range. The analysis of penetrability in this article is only carried out within this scope. It can be seen from the spectrogram that the spectrum of the LED is much more comprehensive than that of the sodium lamp. The peaks of both are at 580nm. The blue part of the LED only accounts for about 6% of the total luminous flux, while the sodium lamp has almost none. The distribution of the red-light zone of the LED is wider than that of the high-pressure sodium lamp. 9. Dimming function Outdoor LED street lights have a perfect dimming function. The light output of LED lamps is directly proportional to the working current, so the light can be dimmed by reducing the current. In addition, since the frequent switching of the LED lamp does not cause much damage to it, the LED lamp can also be dimmed by pulse width adjustment. By adjusting the duty cycle of the voltage and the operating frequency, the luminous intensity of the LED streetlight can be effectively adjusted. 10. Performance comparison led vs sodium street lights Compare items High-pressure sodium lamp LED Street Light Power consumption high Low (Save more than 70% of electricity than high-pressure sodium lamps) CCT 2000～2500K 3000～7000K CRI 20～25 65～85 Voltage AC200V～AC230V AC90V～AC305V Driver efficacy Low High Light effect Low light efficiency, serious light decay High light efficiency, low light decay lifetime Short, <5000 hours, light decay>60% Long, >100000 hours, light decay <30% IP rating IP65 IP66 Protection class Class I Class I /II Start Time 5～10 minutes Instant start, no delay Continuous start Not allowed. need to wait a few minutes allowed Environmental protection Mercury pollution, ultraviolet radiation Good Calorific value High heat The calorific value is small, only 30% of the high-pressure sodium lamp   ‌In conclusion，LED street lights have significant advantages over high-pressure sodium lamps, mainly in terms of energy efficiency, lifespan, maintenance cost, environmental protection, and intelligent control. Lifespan and maintenance cost Lifespan‌: LED street lights have a longer lifespan and less light decay, while high-pressure sodium lamps have greater light decay, which can reach more than 30% in about a year.‌Maintenance cost‌: LED street lights reduce the frequency of bulb replacement and maintenance costs, and the materials of LED lamps can be recycled, further reducing maintenance costs. Environmental protection Environmental protection‌: LED street lights do not contain harmful metals such as mercury, waste can be recycled, the working temperature is low, there is no ultraviolet and infrared radiation, the glare is small, and no light pollution is generated. ‌Energy saving and emission reduction‌: LED street lights have lower power. For example, the effect of 250W high-pressure sodium lamps and 120W LED lamps is similar, but LED lamps have lower power consumption. If it is calculated as a city with 20,000 street lights, carbon emissions can be reduced by 5,200 tons per year, saving about 14 million yuan in electricity bills. Intelligent control LED street lights have automatic control energy-saving devices, which can realize computer dimming, time period control, light control, temperature control, remote control, and automatic light inspection, and have a more humanized design.  

Relationship between Lumens and Illuminance Lumens is the total light output of a light source, while illuminance (Lux) is the luminous flux received per unit area (1 Lux = 1 lumen/㎡). The lumen requirement of a sports venue needs to be calculated based on the illumination standard and venue area. The formula is:Total Lumens = Target Illuminance (Lux) × Venue Area (㎡) × Utilization Factor (0.4-0.8) × Maintenance Factor (0.7-0.9) Sports lighting‌ refers to providing appropriate lighting conditions in sports venues to ensure that athletes, referees, spectators, TV broadcasters, and photographers can watch the game clearly. Sports lighting is not only related to the normal competition of athletes but also involves many other aspects, such as spectators, TV broadcasts, and advertising displays. Sports lights allow people to exercise at night or when natural light is scarce. Its importance cannot be overstated. Whether the sport is played in an international stadium or a local football stadium, lighting cannot be ignored. If you are considering buying motion lights, this article will answer any questions you may have about lumens. Sports lighting helps to meet the actual needs of athletes and spectators and capture high-quality television broadcasts. It is also difficult to operate stadiums without adequate lighting. 1. What Is Lumen? Lumens can be used to quantify the amount of illumination provided by any type of lighting. Lumens are related to candlelight and represent the brightness of a standard candle, equivalent to an Angle of one square meter. If the light source is obscured by the right absorbing hemisphere, the system will begin to emit half of its luminous flux. Simply put, lumens are units used to measure the amount of visible light contained in a defined beam or Angle or emitted by a light source. The amount of lumen or candela a light source emits depends on its spectrum, which is measured by the normal response of our eyes. 2. Difference between Lumen and Lux The difference between lumen and Lux is one of the most fundamental differences to understand. The difference between the two is that Lux considered the region in which the light was distributed. A flux of 1,000 lumens provides 1,000 lux illumination. It will be concentrated in an area of one square meter. If the same 1,000 lumens are spread over 5 square meters, the resulting lighting will be dimmed. A source emitting 1 watt of light would provide a luminous flux of about 683 lumens. In all, a lumen corresponds to at least 1/683 watts of visible light, depending on the distribution of the spectrum. 3. Lux to Lumen Calculation Formula A Lumen is a unit of measurement for luminous flux. The amount of light emitted by a source is measured in microvolts (V). The unit of the lumen is denoted by the symbol Lm. The intensity of the point light source is 1 crown. The outgoing luminous flux is 1 lumen. Since the average light efficiency of LED lights is 150lm/W, the calculation for the lumens of 1000W stadium lights is 1000W multiplied by 150lm/W, which equals 150,000 lumens. To convert Lux to lumens, you can also use a lumen-to-lux calculator. Because light disperses as it leaves the emitter, the farther it travels, the more light it disperses and the less intense it is. 3.1 Measuring in Square Meters To calculate lumens in square meters, you must consider the illuminance Ev in lux, which is equal to the luminous flux of lumens. So the luminous flux V is equal to the illuminance Ev in Lux (lx) times the surface area A in square meters (m2). Therefore, the formulas listed below are derived. ΦV(lm) = Ev(lx) × A (m2) 3.2 Square Footage Calculations   In addition to square meters, you may also want to use square feet to calculate lumens. V lumens (lm) is equal to 0.09290304 illuminance Ev Lux (lx) times surface area A square foot (ft2). The formula is shown below. ΦV(lm) = 0.09290304 × Ev(lx) × A(ft2) (ft2) The specific calculation table may be related to the following link: Lux to Lumen Calculator 4. How many lumens are required for sports lighting? 4.1 Football Soccer Field Dimensions Length x Width: 100 x 64 meters Lighting requirements Lumens 75lux for recreational and training 480000lm 200lux for semi-professional stadiums 1280000lm 1000lux for televising the events 6400000lm Reference link for Guide to Football Field Lighting Design 4.2 Tennis Court Dimensions: Single match:  23.77x8.23meters; Double matches: 23.77x10.97meters 250 lux for Residential and Recreational 48907 lm for single match 65189 lm for double matches 350 lux for Club Competition and   Commercial 68469 lm for single match 91265 lm for double matches 450 lux for National and international 88032 lm for single match 117341 lm for double matches Reference link for Guide to Tennis Court Lighting Design 4.3 Baseball Court Dimensions: 27.43 x 27.43 meters Lighting requirements Lumens Recreational 200lux 150480lm Professional Competition 500lux 376202lm 4.4 Basketball Court Dimensions: 28x15 meters Lighting requirements Lumens Backyard and recreational 200lux 84000lm NBA and FIBA Word Cup 2000lux 840000lm Reference link for Guide to Basketball Court Lighting Design 4.5 Badminton Court Dimensions: 13.4 x 6.1 meters Lighting requirements Lumens Amateur standard 300 lux 24522 lm Professional standard 500 lux 40870 lm 4.6 Volleyball Court Dimensions: 18 x9 meters Lighting requirements Lumens Recreational competitions 75-200 lux 12150-34200 lm Professional match 500 lux 81000 lm 5. Lumens and Watts Lumens and watts are also measured when determining the lumens required for motion lighting. It needs to measure the amount of electricity generated by the light source. For example, a 100-watt light bulb consumes 100 watts of electricity for every second it is on. The more watts, the higher the bill, because the more electricity is consumed. 6. How Do I Convert Lumens to Watts (W)? Consider that the conversion from the lumen (lm) to a watt (W) is very simple. Watts can be calculated using luminous efficiency and lumens. Lumens and watts represent different quantities. This indicates that you cannot convert lumens to watts. Lumen to watt conversion formula: P watts (W) is equal to luminous flux (V) lumens (Lm) (lm). It will then be divided by luminous efficiency per watt lumen (lm/W). The following formula will be derived. P (W) = ΦV (lm) / η(lm/W) 7. Importance of sports lighting Need for athletes to play normally: Athletes need enough lighting to ensure clear vision in the stadium to avoid poor lighting affecting their performance. Generally speaking, the larger the stadium, the faster the speed, and the smaller the ball, the higher the lighting standard. The need for spectators to watch the game: Spectators need higher lighting levels to watch the game, especially TV broadcasters and photographers, who need higher lighting standards to ensure the clarity and quality of the game screen. Needs for color TV broadcasts: With the development of color TV technology, lighting standards are also constantly improving to meet the needs of high-definition broadcasts. Needs for print media: Newspaper, magazine, and other print media reporters also need good lighting to report on the event. Need for advertising display: Advertisements in stadiums also need good lighting to ensure that the audience can see clearly. 8. Technical requirements and standards for sports lighting Illumination uniformity: The lighting of the sports venue needs to ensure uniform illumination throughout the venue to avoid obvious light and dark areas. The BWF stipulates that the illumination of the competition venue should reach more than 500 lx, and the uniformity should not be less than 0.7. Glare control: Glare is an important factor affecting the visual comfort and performance of athletes. High-quality lighting fixtures should have good glare control capabilities to ensure that the light is soft and not dazzling. ‌Color rendering: The color rendering index (CRI) is a measure of the ability of a light source to restore the true color of an object. The lighting of the sports field should choose lamps with a color rendering index higher than 80 to ensure that athletes can accurately judge the trajectory and position of the ball. ‌Energy saving and environmental protection: Modern sports venues pay more and more attention to energy saving and environmental protection. Choosing energy-efficient lighting fixtures can not only reduce operating costs, but also reduce the impact on the environment.  

Importance of streetlight quality Led street light problems have always been a concern by all sides because LED street lights are closely related to people’s lives. According to CNN Health, there has been an article about LED street lights problems. The article describes two LED street light problems that people are focusing on at present. The first one is discomfort and glare. Because LEDs are so concentrated and have high levels of blue light, they can cause severe glare and cause the pupils of your eyes to constrict. Blue light scatters more in the human eye than the longer wavelengths of yellow and red, and enough levels can damage the retina. Another issue addressed in the AMA statement is the impact on circadian rhythms in humans. So is this true? These problems have a lot to do with the design of street lighting, and the quality of LED street lamps. This article will introduce the problems of LED street lamps for you in detail. Road construction is an important part of modern urban construction and LED street lights are important equipment in road construction, which can light up the road at night and create a safe night environment for people. Therefore, we should give priority to the quality of the street lamps when purchasing them. Street lamps of poor quality are not stabilized in lighting performance, which will cause a lot of problems for later maintenance and replacement work. This not only affects the safety of pedestrians and drivers but also increases the bill of public expenditure burden for urban construction. What are the common quality problems of LED streetlights? In reality, road construction requires a large number of high-quality LED street lights to illuminate various roads in the city to ensure that normal night activities can be carried out normally. However, we will find some common quality problems even after our careful selection. Because many manufacturers will cut costs to attract customers with low prices. But these low prices are achieved through the use of poor materials and processes, rather than technological innovation, so this has a great impact on the quality of LED street lights. To allow you to choose high-quality commercial LED street lights, and understand how street lights work, here we list nine of these problems. The problem of LED driver failure LED driver is the most important part of LED street lights. Over 17 years of street light business, we found that the part that’s most likely to break is the LED driver. When it’s broken, the lamps will not work at all, parts of the LEDs are not working, or sometimes the LEDs are flickering. That’s why we insist on using the most well-known LED driver brands, like Meanwell, and Inventronics, or other world-famous brands such as Philips and Osram brands. The reason is simple in one sentence. LED drivers are as important to LED streetlights as hearts are to people. It seems that we can save the bill when buying a streetlight with a low-grade LED driver. But finally, you will find that you will pay more in the future for repairing it with a new LED driver. So streetlights with high-quality LED driver is the best option when doing long-term street lighting projects. Normally projects or tenders have a requirement on the protection class of lamps. They will ask for either Class I or Class II power supply for AC input LED street lights. This means we should pay more attention when choosing LED drivers. The problem of poor LED chips In LED chips, the gold wires are used for their good quality. Why high-end LEDs should be with this high-priced material. Because gold wire has the advantages of high electrical conductivity, good thermal conductivity, corrosion resistance, good toughness, and excellent chemical stability. If using other wires like copper alloy wires, gold-coated silver alloy wires, and silver alloy wires, will reduce the reliability of the light source and make the LED chips easier to fail due to disconnection after a period of use. Unlike LED drivers, it’s not easy for us to visually identify the brand and model of the LEDs. Btw we need a Professional electrician to replace the LED module. It’s more complicated to replace it than the LED driver, which will cost lots of labor. Due to their power limitations, Class 2 circuits are considered safe from a fire initiation point of view and provide acceptable protection against electric shock. Therefore, it is recommended to choose class 2 electrical for outdoor lighting. So we shall pay more attention to it when doing market research on a new product. The problem of SPD function A surge protection device, also known as a lightning arrester, is a kind of electronic equipment to provides safety protection for electronic devices, instruments, and communication lines. When a surge current or voltage is suddenly generated in an electrical circuit or communication line due to external interference, the surge protector can conduct and shunt the inrush current in a very short period of time, thereby avoiding damage to other equipment in the circuit by the surge. A good surge protection device should be capable of repeating its surge protection functions as specified. Although the LED driver has its built-in SPD, we still think that it’s worth installing SPD for street lights. ZC Lighting has both Class I, Class II, 10KV, or 20KV SPD to meet your requirements. If there is very strong lightning or the grid is unstable in your project location, we suggest 20KV SPD protect your street light. Compared to the LED driver or whole street lights, using an SPD with a cost of about 5 USD to protect your device is an economic choice. The problem of Lower IP/IK The IP rating(What’s IP rating) is used to identify the international protection grade code. An IP rating consists of two numbers, Solid particle protection (First digit) and Liquid ingress protection (Second digit). The larger the number, the better its protection grade. IK ratings are defined as IK followed by a number from 00 to 10. It indicates the protection degree of the electrical enclosures against external mechanical impacts. IK Rated products are important especially if they are in public areas, high-traffic areas, or commercial environments. High IK ensures safety for both the environment and people. Light IP rating and IK rating are all important for LED street lights. With a lower IP rating, the water will come into the electrical part of lamps, which does damage to the light. At the same time, we will face the problem of electric shock and injury. With a lower IK rating, the lamps will be damaged or broken when a certain degree of impact is applied on their surface. If broken fragments or lack of required illumination occurs, it will cause potential damage to passersby. The problem of Unreasonable heat dissipation Heat dissipation is a point that buyers must pay attention to when choosing LED lights street. LED chips and LED drivers often need the right temperature to work properly. This temperature is usually less than 105°, which can be found in its datasheet. LED drivers also need the right temperature. Take the Inventronics EUM series, for example, this temperature is often less than 90°. If the heat dissipation design of the lamps is not very good, the lifespan of the LED lamps will be affected, or more seriously the LED lamps will stop working. For the LED drivers, they could switch back and forth between working and not working, which will affect the lifetime of the LED power supply as well. So for LED lamps, both the working temperature of LED chips and LED drivers are what manufacturers should be paying attention to. ZC Lighting generally controls the highest working temperature of LED chips under 85° (at 25° ambient temperature). By this, we will not only get a good cost performance of LED street lights but also make the lifetime of lamps to be as long as possible. For the buyer, the most intuitive is to ask his supplier to provide an ISTMT report. In this report, you can see the Ts temperature of LED chips and the Tc temperature of the power supply. With this report, buyers find it easier to find suitable suppliers. The problem of Poor powder coating For outdoor street lights, good powder coatings can resist corrosion, abrasion, and chemicals. It will prolong the lifetime and improve the performance of street lights. For buyers, a good way is to check whether the supplier has a salt spray test report. This test is according to ISO9227 or ASTM B117, and the street light needs to be exposed to salt for 1000 hours. Then the lab should check to see whether there is any corrosion/surface pitting/cracking and its area. Finally, a test report will be issued to the applicant to show its rating. If you are interested in street lights with this test report, please check with us. Below is a brief introduction to powder coating. Powder Coating is an Epoxy, Polyester, or Polyurethane resin-based dry powder that is applied onto metal surfaces through an electrostatic spraying system. It includes 3 main steps. Pretreatment Purpose: Remove the oil, dust, and rust on the surface of the workpiece, to produce a layer that can increase the coating adhesion called the “phosphate layer.” Electrostatic spraying Purpose: Powder coating should be evenly sprayed on the surface of the workpiece. As to a special workpiece (including the position where the electrostatic shielding layer existed), we should use the high-performance electrostatic spray molding machine to complete the painting. Cure at high temperature Purpose: When a powder on the surface of the workpiece is exposed to an elevated temperature for a certain length of time, it begins to melt, flows out, and then chemically reacts to form a higher molecular weight polymer-surface texture that we want. The problem of Lighting distribution The lighting distribution is mainly determined by the design of optics PC, PMMA, or Plexiglass lens. ZGSM Rifle series street lamp has over 10 different lenses, which makes the Rifle series an ideal option for your street light project. When the position, height, and spacing of lamp posts are fixed, a successful outdoor lighting scheme often depends on whether the light distribution of lamps is reasonable. With good light distribution, we can use the lowest watts of lamps for projects, to minimize the budget of the project. And this is the most energy-saving solution. When the light distribution of lamps is not reasonable, we often need a larger wattage or more lamps to provide a uniform roadway lighting effect.  By using the LED street light with good lighting distribution you can avoid the common problems below: The light seems too bright The light shines in the windows of a residential area at night There is too much light under the fixture There are many dark spots between the lights The path isn’t lit up while the grass is lit up That’s why we shall also pay attention to see whether the street light is with ideal lighting distribution. Because it matters whether you can get your project and at what cost you can get your project. The problem of Low efficiency The lumen efficiency of LED lights is mainly determined by three factors. Efficacy of LED chips Driver efficiency Optical part (lens, glass) For many buyers, the lumen efficiency can’t be tested by itself. This makes them have the chance to exaggerate the product parameters. However, the reduced configuration is not sufficient to meet the required lighting design. When the lamps are finally installed, the lighting results are not as per the lighting class required by the project. It seems that the little trick makes their product be with the same market position or even more competitive. But next time, no one will be in favor of yours because the trust is gone. The problem of Package Without a good package, the street light will be broken during transportation. And without a well-designed label, buyers may face customs clearance problems for importing. For packaging design, we mainly take safety into consideration. On the basis of safety, we will try to save material consumption that is eco-friendly and compress the volume to help customers save freight. Of course, good packaging is also good for customers’ promotion and sales. And we will also provide customized services for our customers, which will make your products more attractive.   As a part of the packaging, the label is also important.  It can facilitate your goods identification. And a standard label can help you successfully complete customs clearance. If you have any requirements on packing and labeling, please feel free to ask us and of course, we will give you our suggestions.   Conclusion To carry out your street lamp project smoothly, ZC Lighting suggests that under the premise of understanding how street lights work, you should carefully select a street light with a famous LED power supply and LED chips, well-designed SPD, higher IP/IK, good plastic spray, proper lens, well whole lamp design, and nice packaging. We believe that if we can achieve perfection in these points, the LED street lamp you choose will be very popular and successful in the market.