linsheng : “The design of any building or system in a building should begin with the negotiation between the parties. Impact lighting installation or upgrade affects emergency lighting, usually between the responsible persons, or in the case of new construction, development Consultation between personnel and lighting designers and/or installation contractors. In relevant cases, it may also involve architect or building control."

　　
Design consultation should include:

　　
Provide building plans, including escape routes, fire safety regulations;

　　
Emergency lighting design risk assessment (if any) and fire risk assessment;

　　
Details of the relevant emergency lighting and logs;

　　
Recommended duration of emergency lighting;

　　
Whether to use maintenance or non-maintenance accessories, or a combination of the two;

　　
Recommended emergency lighting test procedures;

　　
Power supply (independent lighting or central power supply system);

　　
A strategy to be taken in the event of a normal lighting failure - "left behind" or immediate evacuation, if left in place, follow the procedure at the end of the emergency lighting duration and issue a warning to the occupant when evacuation is required;

　　
Other relevant factors, such as high-risk task areas.

　　
Design considerations and compliance

　　
The detailed design should include a design risk assessment and need to cover at least the above parameters as well:

　　
Position signs and fixtures to meet regulatory requirements (BS 5266 lists the location of the fixtures, including, for example, at each exit gate, near the stairs, so each pedal receives light, close to emergency and fire call points, and escape routes near external lighting Sign, close to fire equipment, direction changes, etc.).

　　
The minimum lux level required to achieve an escape route at the “work plane” or ground level and the illumination required to reach the escape route sign;

　　
Specifying the area of ​​illumination that needs to be illuminated (whether or not it is part of an escape route) in the relevant regulations, or the area identified as needing illumination in the design risk assessment;

　　
The required response time is achieved, ie the maximum time that can elapse between normal power failure and emergency lighting.

　　
Which areas need lighting?

　　
National regulations detail how the escape route needs to be illuminated. It also specifies other areas that need to be illuminated.

　　
National safety regulations recommend that the room should have emergency lighting in the following situations:

　　
They are larger than 60 square meters;

　　
They have an escape route through them (for example, if they have an interior); or

　　
They have a hazard identified by an on-site risk assessment, such as a kitchen.

　　
Toilets with an area of ​​more than 8 square meters are considered to require emergency lighting.

　　
Minimum lux level for emergency lighting

　　
National safety regulations provide a starting point for establishing minimum lux levels for emergency lighting. Please note that the emergency lighting commissioning certificate needs to be accompanied by photometric design data in one of the following formats with an appropriate maintenance derating factor to meet the worst case requirements:

　　
Certified spacing data, such as the ICEL 1001 registry;

　　
Calculations according to BS 5266-1:2016, Annex D and CIBSE / SLL Guide L12;

　　
Print out the results of the appropriate computer program.

　　
Spirit provides the appropriate design data and supports test results as part of our design and commissioning services.

　　
Evacuation lighting must help the occupants evacuate. This means it must:

　　
Enabling them to find/recognize the exit sign and the escape route direction sign at the door;

　　
Enabling them to use escape routes;

　　
Allow them to take security measures before evacuating - turn off the device and check that all personnel have vacated.

　　
recommends horizontal illumination on the ground along a defined escape route centre line with a maximum width of 2 meters and no less than 1 lux. Please note that the previous minimum along the escape route centerline is 0.2 lux, so systems installed before 2016 may not meet the requirements.

　　
An open area with a building area of ​​more than 60 m2 or an open area that has been assessed as requiring emergency lighting shall provide a horizontal illumination of not less than 0.5 lux on the floor of the area, excluding the perimeter of 0.5 m. The actual illumination should take into account the nature of the house and its occupants.

　　
National safety regulations also recommend minimum illumination in high-risk areas as required. Please note that if the building does not evacuate immediately, additional emergency lighting may be required so that the occupant can stay there. The design risk assessment should determine the level of illumination required. For example, if a passenger is about to operate the house normally, then alternate lighting powered by an alternate power source (eg, a generator) may be required to provide adequate lighting conditions.

　　
Response time

　　
The response time depends on whether the panic will occur in a significant number of people, which in turn depends on factors such as the type of building and the people themselves (age, knowledge, training, physical and mental conditions);

　　
Adapt to the time required for emergency lighting to provide new, often much lower, illumination.

　　
The normal emergency response time is 50% of all outputs available in 5 seconds and 100% in 60 seconds. In the high-risk mission area where there is a hazard, complete emergency lighting must be provided within 0.5 seconds.

　　
Central power supply system

　　
The central power supply system has additional design considerations and is specified in the relevant standards.

　　
As stated in the standard, wiring needs to be sufficiently resistant to fire and mechanical damage. Cable fixing and support should be non-flammable so that they do not degrade circuit integrity below the circuit integrity provided by the cable used. Obviously, plastic cable ties and trunking cannot be used.

　　
The wiring of the emergency lighting device needs to be dedicated to installation and separate from the wiring of other circuits. If the cables for the emergency lighting system are installed in a universal containment system, such as a trunking or cable tray, the cables should be isolated from one another by appropriately designated partitions.

　　
LED upgrade: considerations for emergency lighting

　　
When an organization upgrades its lighting to LED lighting, emergency lighting is usually in place.

　　
Care must be taken not to compromise the effectiveness of existing systems. At the same time, LED upgrades offer the opportunity to meet updated standards. We see that many systems do not fully meet the requirements.

　　
Maintenance emergency lights are usually replaced in a similar manner, while non-maintenance lights are usually not replaced because the operating costs are minimal. There is also an opportunity to automate testing.


https://www.linsheng.com

Advanced Fire Systems Business Advanced introduced Lux ​​Intelligent, a new emergency lighting test system with cloud monitoring and mobility management capabilities. It saves time and cost, provides many unique technical features, and proves to comply with the BS5266-1 standard.

　　
linsheng pointed out that Lux Intelligent is an addressable automatic test system that displays the compliance and functionality of all emergency lighting, saving labor and time without the intervention of engineers. It can be easily networked and retrofitted to existing wiring and fixtures to minimize installation costs.

　　
A unique feature of Lux Intelligent is cloud monitoring and system management through mobile and web applications. Test data is securely stored in the cloud, and the system provides real-time details about status, failures, test failures, and recommendations via a smartphone or web browser, allowing users to monitor all sites anywhere in the world, up to a single device. Users can share sites or panels with engineers and maintenance staff with a single click and send maintenance and test reports via email.

　　
The system can be easily installed in a panel or network format. The network can be a standard cable that allows 200 panels to be networked, or customers can use their own LAN and wireless network. This low-cost, non-disruptive approach allows an unlimited number of panels to be networked, covering large or multiple sites around the world, and monitored through the cloud.

　　
Lux Intelligent can be used with virtually any light source (including LEDs) from almost all manufacturers and can be easily added to existing wiring, saving installation and maintenance costs. It is suitable for any existing system, including a central battery, with up to four loops per panel and 249 fixtures per loop.

　　
The system has a unique set of test methods, including standard current and voltage tests, as well as direct measurement of light through fiber optics. Once installed, there is no need to look at the panels except for three years of battery inspection; in fact, their reliability is so high that Advanced has removed the keys from the front of the panel.

　　
“It’s fair to say that no other emergency lighting test system can more easily comply with BS5266-1 or be more cost-effective,” said Advanced Marketing Manager Aston Bowles. “In fact, we are very confident that Lux Intelligent will save users time and money. We have provided a saving calculator on our website, showing how automatic testing technology, easy installation and cloud monitoring are in a very good saving and Short-term interest."

　　
“A fully tested, compliant system that runs when you need it is our goal. We do this in a few simple steps. First, we provide real-time status and test reports; second, we will All data is securely stored in three locations: Panel, PC and Cloud; third, we allow you to access this data on your phone, tablet or any computer, and finally we can easily and quickly work with your team or Tripartite partners share websites, panels or test and maintenance reports.

　　
“It’s the combination of zero-time testing, data integrity, and a quick solution to problems and maintenance requirements that makes Lux Intelligent so reliable and cost-effective. In addition, your system can be easily extended to cover any location and with Any luminaire or LED accessory works together, and you have an unparalleled and future-proof system that saves you an expensive one-time investment in the future," Dave concluded.

　　
Advanced is a global leader in the development and manufacture of intelligent fire protection systems and emergency lighting tests. Its legendary performance, quality and ease of use make it a world-renowned and challenging place to use, from single-panel installations to large multi-site networks. Advanced products include complete fire detection systems, multi-protocol fire panels, fire suppression controls, fire paging systems and emergency lighting testing.


https://www.linsheng.com

　　

When combining landscape lighting designs, you may have several different types of lights to achieve the overall look you want. This usually includes a combination of lights, downlights, spotlights, floodlights and streetlights to enhance the visual appeal of your yard, highlight specific features, increase safety and direct traffic.

　　
Spotlights and floodlights are a popular choice; however, understanding the differences and determining which method is best for different lighting needs can be a bit confusing. To make things more complicated, the focus of a manufacturer may fall under the floodlights that different manufacturers think. Therefore, it is important to understand the beam spread and check the propagation of the light being considered. This will help you make sure you choose the right outdoor light for your project.

　　
The Spotlight Company will explain the meaning of both floodlights and spotlights, so how do you choose them?

　　
Outdoor lighting: What is a spotlight?

　　
Spotlights typically provide a beam of light that is no more than 45 degrees wide and typically less than 25 degrees wide. This is the type of light you often see above the garage door, or the light that is positioned to highlight a particular landscape feature.

　　
Spotlights are often used to illuminate specific objects such as statues, doorways, interesting trees or architectural features in the home. You may also want to use a spotlight if you want to include light in a specific area (such as a small seating area) without allowing light to reach neighboring windows or otherwise causing light pollution.

　　
Spotlights are also often used when landscape lighting designs use both light and shadow to create visual interest. Because they make it easier to position the light exactly where you want it, the spotlight is perfect for this type of design and allows your installer to create an agreed-up look more precisely.

　　
Outdoor lighting: What is a floodlight?

　　
Floodlights have a wider beam spread than spotlights and are typically used when wider illumination is required. For example, you won’t use floodlights to highlight your favorite landscape features, but you can use floodlights to illuminate parking areas or large patios or decks.

　　
Floodlights typically have a beam spread of more than 45 degrees and a maximum of 120 degrees; however, some lamps marked as floodlights may have a beam as narrow as 25 degrees. With this in mind, if you are looking for a floodlight with a narrower beam angle, then you better look at the spotlight.

　　
In addition to illuminating your driveway, guest parking area or outdoor living space, floodlights are also the perfect choice for downlights mounted on trees or buildings to create the moonlight to bathe your garden, lawn or courtyard.

　　
Spotlight Company Note: If you find it difficult to remember the difference between a spotlight and a floodlight, keep this in mind: the spotlight illuminates a specific area, and the floodlight illuminates a lighted area. This may come in handy when creating landscape lighting plans.

https://www.linsheng.com

　　

Ceramic metal halide lamps have many advantages for higher efficiency and longer life.

　　
Halogen lamps bring a lot of illumination to commercial spaces. However, they have high energy costs and a relatively short life. This may cause businesses and retailers to spend a lot of money on energy and labor to keep it running. These ceramic halide lamps are tickets in the space where you need a better life bulb to save energy. Many retailers and commercial operations are beginning to realize the advantages of using these bulbs.

　　
linsheng stated that one advantage of using ceramic metal halide lamps is their color quality. The problem with many luminaires changing from incandescent lamps is the color change that many luminaires bring. With these ceramic halide lamps, you get great color from the start. You can also find their dimensions, making them an excellent alternative to existing halogen fixtures. This makes it a breeze to turn them into retrofit projects. Due to the need to reduce costs, many commercial and retail spaces are looking for affordable lighting alternatives that can maintain their space without breaking the budget. These ceramic halide lamps are one way of doing this.

　　
linsheng said: You can find ceramic metal halide lamps of increasing size and shape. This makes them ideal for replacing high pressure sodium lamps in existing magnetic ballasts. However, for maximum energy savings, you need to put them in an electronic ballast. These lamps provide long life and good light maintenance throughout their useful life. Thanks to so many configurations, they are ideal for retrofitting existing lighting solutions. Their longevity helps balance their high costs.

　　
This is a disadvantage of ceramic metal halide lamps. They cost more than many other traditional light bulbs. However, as options become more popular and demand continues to grow, their costs are steadily declining. This may continue into the future. The energy they save can prove the initial cost of many people. Your best bet is to check the available options and choose the one that suits your needs.


https://www.linsheng.com

As we all know, EPS is used as a backup emergency power source. The Chinese construction industry has developed from scratch to weak, strong, and has been developing for more than ten years, fully demonstrating the irresistible development momentum. However, so far, there are still many design experts who remain unchanged on the status and role of EPS. The views and opinions are different, indicating that there are many aspects of EPS in the development process that are not satisfactory. Regardless of the factors of vicious competition, there are still many shortcomings in consciousness and concept. linsheng believes that the two points that are most unfavorable to the healthy development of the EPS industry are: First, overemphasizing the status and role of EPS; secondly, ignoring the status and role of EPS.

　　
Overemphasizing its position and role means that some people rely too much on EPS, and EPS can replace diesel generators or second-way network power. In fact, this is an incorrect view. EPS is just an emergency power source. Since it belongs to the power storage type emergency power source instead of the power generation type backup power source, the space size of the power storage device and the investment amount of the installation determine that it is not suitable for use as a large capacity second power source. Therefore, designers should not choose EPS as the second power source for large capacity. Of course, if the total capacity of a large-capacity and small-load power system, the initial investment in the total capacity of the second-line power caused by the power line, high-voltage system, low-voltage system, and line is very uneconomical compared to the EPS system, this time by the load. The ability to choose EPS as a centralized second power supply is still very sensible.

　　
Overestimating the historical status and role of EPS refers to the negative or skeptical attitude of a few people to EPS, and believes that its development and growth is purely artificial. This is also an unscientific understanding. As a historic new product, EPS shows tenacious vitality and proves the needs of the times. In fact, EPS is hard to play an important role in replacing traditional products, solving power shortages, safety precautions, and ensuring continuous operation. Many construction projects have installed EPS equipment, which not only eliminates the hidden dangers of fire safety, but also reduces the acceptance and acceptance of unqualified, and reduces the comprehensive investment. In the first month of the 15th wind this year, power outages were caused in many places. The EPS system was usually installed as a backup power department, and its production and office would not be paralyzed. In banks, hospitals, shopping malls, hotels, hotels and other places, there are sharp contrasts between EPS systems and no EPS systems. In this case, all opinions about EPS are superfluous, and the so-called facts are better than eloquence. It can be said that the existence and development of EPS is scientific. Excessive or excessive attention to the status and role of EPS is unscientific. The promulgation of the latest national standards has brought a new mission to EPS, and the EPS industry has also seen new development space. Of course, for various reasons, the EPS industry quality crisis and vicious competition will become more common. In this case, designers, users, and managers are more important, and they need to adhere to the scientific development concept. https: //www.linsheng.com /

Linsheng Electrical Co , Ltd said that although today’s vacuum cleaner is a multi-billion dollar household necessities, you may be surprised to find that the basic design and performance of the machine has not changed much in the past 100 years.

Tongasco said: "The 1910 vacuum cleaner will clean the carpet, just like today’s modern vacuum cleaners." This is the dirty history of household cleaners, from rough carpet cleaners to horse-drawn carriages to Hoover.

Sucking dawn

It starts with a broom. Although archaeologists have found basic examples of cleaning tools dating back to 2300 BC, it was not until 1797, when Massachusetts farmer Levi Dickinson noticed that his wife was struggling with her wife, brooming Not perfect. It didn’t sweep very well, and the bristles continued to fall out. Therefore, Dickinson put together a broom made of various sorghum, which is as tall as corn and used as a feed for livestock. Sorghum - Hard, strong, will not fall apart - proved to be the ideal choice for brooms. Dickinson made dozens of brooms and sold them to neighbors. In three years, the peasant and his son (and servants) are new. The England region produced and sold hundreds of brooms until 1850, and the sorghum broom won a new name for the grain: stilts.

Soon after, people began to look for better, more boring, more technologically advanced cleaning methods. In England, ambitious inventors have patented mechanical sweepers that clean streets, floors and carpets. Their internal work is simple - a manual pulley and crank system that can be used to rotate dirt into the container by rotating a brush or sweeping device. However, these complex devices are not much better than the broom. In 1858, Boston’s Hiram Herrick submitted the first US patent that might be a "carpet sweeper" (although it is basically a copy of the British patent). Basically, it’s a rolling broom and a broom. Over the next two years, patents filed by various inventors have made ambiguous improvements to this design. In fact, it is rarely produced or even sold less.

Daniel Hess came along with the country at the edge of the civil war, and Iowa inventors changed the carpet cleaning game with a simple addition:. Air Hess’ 1860 patent describes his innovation: "The essence of my invention is to draw fine dust and dirt through the air through the machine." Hess’s machine is still in manual operation; you need a bellows to create suction and inhale dirt. This limits its ability to do most of the things (no wonder historians say Hess may have never built a machine). But this 1860s device is the first basic design we now call a vacuum cleaner.

Chicago’s Ives McGaffey took this concept one step further in 1869, using a fan to move the air and erect the machine. He is also a better marketer than Hess, and writes in the patent: "The accumulation of dust and dirt / dwellings is a huge annoyance for all good butlers... Eliminating these difficulties is my goal." Despite the ambitious intentions, McGrady’s ‘whirlwind’ did not succeed. At a retail price of $25 (about $450) and a crank handle, the whirlwind is harder to use than a simple broom. The whirlwind almost drove the companies that produced it to bankrupt, and almost all cyclones were destroyed in 1872 due to slow sales and two factory fires.

The problem with Hess and McGuffie is that moving air is only half the solution. Vacuuming can be a boring chore, but it’s easy because electricity can do all the suction work. No one wants to promote their Dyson or Hoover.

In 1898, St. Louis’s John S. Thurman created his gasoline-powered "pneumatic carpet refurbished machine." Because it does not suck, but the machine produces an "air jet" to remove the dust and blow it into the container. The device is the same size as the carriage. Thank goodness, Thurman called. The inventor took out the ad in St. Louis’s dispatch, charging $4 per visit ($110-115 today), creating a moderately successful business.

“They are building buildings, hotels, beautiful high-rise buildings in New York.”

A variety of people tried to improve Thurman’s patents, but the results were minimal. One story is that an unknown inventor in London participated in a trade show, boasting that when British structural engineer Hubert Cecil Booth contacted him, he was particularly pneumatic. Carpet cleaners are the latest and best. According to an article about this incident that Booth wrote many years after the facts in 1935, when Booth asked him why the machine did not vacuum rather than expel it, the inventor was a stroke. “He became excited and said that vacuuming is impossible,” Booth wrote.

By the turn of the century, Booth’s equipment was not just riding in the streets. It is being built in the home of the rich, creating a central vacuum. “They were placed in New York buildings, hotels, beautiful high-rises..... basically Booth’s vacuum was installed in a room in the building,” Gasco said. "They have become very popular with big houses, but not for those with ordinary families."

This is where the problem lies. Due to cost and size, the vacuum is limited to the upper crust of society. In 1907, an Ohio janitor changed this.

Hoover

It is not correct to say that James Murray Spangler invented the vacuum, but he did change it completely. Every night, Spangler cleans the entire building in a 60-year-old department store in Canton, Ohio. The task is not only tedious, but also affects his asthma. As a tinker and inventor, he designed his Frankenstein device using a broom, pillowcase and electric motor. Gask said that the reason for using the Spangler machine is that it is upright and portable. "He uses the ceiling fan motor and the blades to create the airflow... he uses a belt to record it on the rotating brush, which he took out of the carpet cleaner..... No one can get it. The carpets are clean because they don’t have an electric brush."

Spangler was patented in 1907 and resigned from his job to open an electric vacuum cleaner company. Investors (including department store owners) helped him start producing his invention. This is not enough. After purchasing 75 motors and getting factory space, Spangler was too nervous because of cash, so he used the house as collateral. Gasco said, "He not only breached the contract - they actually want to take his home away from him, lock his door and put it on the auction floor." In the economic trouble, Spangel turned One of his early satisfied customers: his cousin Susan Hoover.

After more than a century, everyone knows the name of Hoover. The company has sales of millions. (At some point, people even call the breathing dust "vacuum.") However, since the prototype of Spangler, household vacuum cleaners have not changed much. Of course, they are more fashionable, quieter and smaller. But "go back... In the 1930s, there were no new inventions since then," Gasco said. "It really doesn’t."

If any, the quality of the vacuum cleaner drops, the motor wears out faster, and dust blocks modern circuit boards. “The vacuum cleaner motor in the 1910s absorbed about 1.5 amps and the speed was between 1000 and 3000 rpm,” Gasco said. "When we arrived in the 1930s... many of those motors are now absorbing 3 amps at 5 to 6000 rpm, but at 8 times faster... the faster it turns, The sooner it is (wearing) "Today, the most advanced Hoover absorbs 11 amps and the new Dyson rotates at 104,000 rpm. "This is not true, it has more suction or more power," Gasco said. It runs faster.

In the years since Hoover patented Göller, there have been some beneficial improvements that have surpassed the vacuuming experience. Thanks to the introduction of less porous bags and modern HEPA filters and bags in the 1930s, they became more of Black&Decker’s 1975 cordless vacuum patent and the Dustbuster launched in 1978. They became more fashionable and cool, and Dyson’s 1991 "G-Force" was clean. The vacuum cleaner became smaller and more portable, eventually leading to a $2,000 clean equipment status symbol. Then, of course, there is Lombard, which made its debut in 2002 and vacuumed in the robot era.

　　
https://www.linsheng.com

jump start manufacturers : LG Chem and ST Improve Hybrid Electric Vehicle Battery Technology

　　
Semiconductor supplier STMicroelectronics (ST), together with South Korea’s largest chemical company LG Chem, has unveiled details of a new car battery technology that can both reduce gasoline consumption and reduce carbon dioxide emissions. It can significantly increase the market potential of electric and hybrid electric vehicles (HEVs). The new battery pack combines LG Chem’s lithium battery technology with ST’s advanced battery management chip.

　　
Hybrid electric vehicles use two types of power: a conventional gasoline internal combustion engine and a motor powered by a rechargeable battery pack. Hybrid electric vehicles have gradually become an important segment of the automotive market due to higher fuel efficiency and lower air pollution. Current hybrid electric vehicles generally use NiMH technology. The advantage of this technology is that the control circuit is relatively simple, but the battery itself is heavy and the operating voltage is low.

　　
Lithium batteries are widely used in portable consumer electronics. Compared with nickel-metal hydride batteries, lithium batteries have more than twice the energy-to-weight ratio of nickel-metal hydride batteries. The self-discharge of lithium batteries is also small when not in use. However, lithium batteries currently have certain limitations in high-power applications, because the charge and discharge cycles of lithium batteries must be carefully managed to avoid improper use of the battery. Therefore, in order to become a power source for high-power applications, lithium batteries must integrate sophisticated and highly reliable battery management circuits.

　　
To control the charge/discharge cycle, LG Chem’s new lithium battery pack uses ST’s advanced battery management chip. ST’s battery management chip ensures high reliability and long-term reliability while maintaining economics, even in demanding automotive powertrain systems. .

　　
ST’s battery management chip uses its unique BCD (Bipolar-CMOS-DMOS) manufacturing technology, which integrates digital logic, high-precision analog measurement circuitry and power processing transistors. Battery-based management systems based on STMicroelectronics accurately and reliably control battery charging and discharging cycles, ensuring safe battery operation and extending battery life. Each chip can manage up to ten lithium battery cells, and the chip also provides a communication interface for the STMicroelectronics power management chips in the system to communicate with each other. With this communication function, designers can connect up to 32 battery management chips in series to manage motor battery packs with output voltages up to 1,600V.

　　BCD, commonly referred to as smart power, is a semiconductor manufacturing technology. STMicroelectronics uses this technology to fabricate three basic components of a circuit on a low-cost single-chip: digital logic for high-speed computing, analog circuitry for high-precision measurement and control, and power transistors for high-current processing. STMicroelectronics is a pioneer in BCD technology and has been the market leader. Its smart power products are fully mass-produced and are widely used in a variety of products, from printers and fax machines to hard drives to management window lifts. STMicroelectronics’ smart power products can be seen in the controllers that move with the mirrors.

　　
LG Chem / STMicroelectronics solutions can reduce battery cost and weight, improve the reliability of lithium battery packs, and enable lithium batteries to be used in a variety of new applications from electric motorcycles to electric bicycles to heavy trucks.

https://www.linsheng.com

China Emergency Light Manufacturers : "What is the most popular 5 emergency light source exit sign combination unit?”

Some commercial, industrial or residential buildings require more than just exit signs or emergency lights. In this case, the best way is to choose the exit sign and the emergency light combination!

Once you decide to use the combo unit, the next step is to figure out which one is best for your application. First measure the most popular combination units offered.

The following are the five emergency light combination units that are popular:

1. Red LED exit logo combination

The red LED exit logo combination is best suited for commercial or residential interiors. It is made of durable thermoplastic. The unit is equipped with 2 round LED lights on each side, which is 90% more energy efficient than incandescent or halogen lamps. During the power outage, the unit provides up to 90 minutes of emergency lighting thanks to the compact nickel-cadmium battery.

2. Green LED exit logo combination

The green LED exit logo combination is also suitable for commercial or residential interiors. Green letters are only allowed in states that do not require red letters. This device is similar to the red LED exit sign combination.

3. Wet position red LED exit sign combination

The wet positioning red LED exit marker combination is suitable for outdoor applications or other wet locations. It is made of impact-resistant ABS plastic and can be used in bad weather. It is completely sealed to prevent any moisture and can be customized to work under freezing conditions. It has two PAR 9-watt halogen lamps, either top or side mounted, while the E-X-I-T logo is illuminated by LEDs.

4. New York City export logo combination

As a must-have for Big Apple, the New York export logo combination is different from other standards because its E-X-I-T letter is 8 inches high instead of 6 inches. The exit sign of the New York City Building requires that these units be made of steel and run at 120V or 277V. It also offers 2 or 3 halogen heads.

5. Class 1 2 exit sign emergency light combination

The Level 1 and 2 Division Exit Mark Emergency Light Combination Unit is a popular choice for areas defined as hazardous locations. Paints, refineries, power plants and chemical processing facilities are characterized by this definition because they have flammable gases and vapours. The unit is a combination of a tamper-proof aluminum housing and a multi-panel panel with an LED exit sign and a halogen emergency light.

All five units are UL 924 approved and comply with their respective local and state compliance regulations. China Emergency Light Manufacturers Tip: When looking for which exit sign is best for your hazardous location, make sure you know exactly what materials are in your area.


https://www.linsheng.com

A. Emergency light battery

　　
China Emergency Light statement: All emergency lights and illuminated emergency exit signs use batteries to power the lights. To ensure continuous preparation and operation of emergency lights, these batteries are rechargeable. The circuit in the emergency light both charges the battery and ensures that the battery remains charged.

　　
China Emergency Light compares the type of battery used in emergency lighting

There are two types of batteries for emergency lights; they are:

sealed lead-acid battery (same as car)

Nickel-cadmium batteries

Sealed lead-acid batteries are the most advanced rechargeable technology available. They are called lead acids because they contain lead alloy sheets that are immersed in acid. The acid decomposes the plate, producing charged electrons, which is electricity. Recently, the technology of lead-acid batteries has been improved to allow completely sealed units that do not require the addition of water to maintain acid levels.

Nickel-cadmium batteries are the first "dry" (no acid needed) rechargeable batteries ever. Since then, other technologies have been developed, but they are usually more expensive. In nickel-cadmium batteries, the two metals are separated by a dielectric (non-conductive) layer, causing the metals to react magnetically with one another, producing charged electrons that form electricity.

Which is better?

Both types of rechargeable batteries used in emergency lighting devices have advantages and disadvantages.

Advantages of lead-acid batteries:

Lowest cost

Better heat and cold resistance

Disadvantages of lead-acid batteries:

Larger size

Heavier weight

Must remain upright

"Deep riding" damage (let the battery lose power)

Advantages of nickel-cadmium batteries:

Small size

Lighter weight

Can be oriented in any direction

Longer life

Vulnerable to extreme heat and cold

Disadvantages of nickel-cadmium batteries:

higher cost

Must be fully dismissed on a regular basis (annual test is responsible for this matter)

There is a "memory", if it is not fully charged for the first time, it will never accept full charge

Typically, lead-acid batteries are used for steel enclosure emergency lights and nickel-cadmium batteries are used for thermoplastic enclosure emergency lights.

It is important to note that in the case of battery replacement, the same type of battery as the unit originally included must be used. Replacing the battery type also requires replacing the board because the charging circuit is included on the board.

battery voltage

China Emergency Light says: The batteries used in emergency lights also have various voltages, from 6 VDC to 24 VDC. A higher voltage allows a brighter light to be connected to the emergency light. When remote heads need to be connected to the emergency light unit, they also work better because there is less voltage loss across the line. Finally, higher voltage batteries also allow for higher wattage bulbs, adding another increase in light intensity.

When replacing the battery in an emergency light, it is important to ensure that the same battery voltage and the same battery type are installed. Too high a voltage will cause the bulb to go out, while too low a voltage will cause the bulb to dim. In addition, if the battery voltage and circuit card voltage are not the same, the battery will not charge properly.

The battery is only the most important part of an emergency luminaire. Safely protected within the unit, when the house is powered off, it is the source of emergency lighting, giving enough illumination to find the closest exit point.

Before replacing the emergency light battery, be sure to write down the type, voltage and current strength of the old battery. The standard internal power supply for most lamps is sealed with lead acid and nickel cadmium, with a few exceptions. Sealed lead acid batteries have been used for the past 30 years, although nickel-cadmium batteries quickly replace lead due to their long life and compact size.

If the correct battery is not installed, the emergency light will not work properly in the event of a dangerous situation such as a loss of AC power, such as a fire, earthquake or other conditions. The OSHA (Occupational Safety and Health Administration) guidelines require scheduled preventive maintenance to ensure that the equipment is functioning properly during a power outage.

Emergency light battery requirements:

1. Electric lamp head during an emergency

2. Must last at least 90 minutes

3. Affordable and easy to replace

4. Provide different voltage and current strength

5. Test monthly and annually according to OSHA regulations

6. The battery test button is standard on all emergency lights. By pressing the test button, 7. The emergency light unit switches from AC power to emergency battery power, allowing you to clearly see the remaining battery.

Fully charged batteries should be in good condition for at least 90 minutes as required by UL (Underwriters Laboratories). If the battery does not last for 90 minutes, it must be replaced. The UL 924 list is only for batteries that meet or exceed the UL rigorous testing procedures.

Many of today’s emergency luminaires are equipped with self-test options that allow equipment to automatically run monthly and annual inspections, reduce maintenance requirements and increase the efficiency of building emergency lighting systems.

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Will you operate the vacuum cleaner correctly? The correct way to use the vacuum cleaner!

Today, Linsheng Electrical Co , Ltd. will introduce you to the use of vacuum cleaners. Known as an electric vacuum cleaner, the vacuum cleaner is an electric sweeper that cleans dust from carpets, floors, sofas, beds, furniture, and small areas inside electrical equipment. It sucks the dust attached to the external items into the dust collecting bag inside the machine through pipes, such as cracks, corners, uneven places, and dust on various shapes, and does not cause dust to fly and spread. The vacuum cleaner is an indispensable cleaning tool for daily cleaning work.

How to use the vacuum cleaner

(1) Inspection before use. Check the vacuum cleaner, power cord, and socket for damage. Check that the circuit is connected properly, connect the ground wire to ensure safe use of electricity, check whether the accessory can be used, and check whether the dust in the dust bag is clean.

(2) Select an attachment. Select the appropriate attachment according to the location of the vacuum and connect it tightly with the vacuum cleaner. Connect the hose to the vacuum cleaner and connect the hose and hose of the hose. Depending on the operating surface, different vacuum cleaners can be used to clean the floor. Floor brushes can be used. Some floor brushes are equipped with floor and carpet selection switches, which can be used as needed. Clear dust on sofas, mattresses and clothes should be round. Sofa hoe; if you want to absorb dust from small corners or gaps, use a pointed nozzle.

(3) Pre-cleaning of the site to be cleaned. Remove large pieces of paper, paper balls, plastic cloth, glass, burning cigarettes, metal fragments or waste larger than the diameter of the suction pipe in the cleaned place, otherwise it will easily damage the dust filter or block the pipe.

(4) Adjustment strength. The suction control device is available in manual or automatic position on the armrest. If it is manual control, it must be adjusted to a small size. When the vacuum cleaner starts working, it will be adjusted as needed. If it is automatic control, no manual adjustment is needed.

(5) Plug in the power. A vacuum cleaner with an automatic winding device, pull the plug and pull it into the socket, but pay attention to the length of the pull, if you see the yellow or red mark on the power cord, stop pulling. After use, press the button and the wire can be automatically retracted. If there is no vacuum cleaner for automatic winding, insert the plug into the socket.

(6) Turn on the switch and start working. Some vacuum cleaners have only one switch on the casing and can be opened. Some vacuum cleaners have two switches, one on the vacuum cleaner’s casing and the other on the handrail. The switch on the vacuum cleaner should be turned on before the switch on the handrail is opened. Either way, you should first stabilize the vacuum cleaner and then turn on the power. When vacuuming, hold the suction tube with your hand and place the suction side of the nozzle naturally on the ground plane, and gently pull it at a speed that is not too fast. When pulling, lift the nozzle face slightly toward one side, push it forward, and lift the front of the nozzle slightly forward. The time of each use should not be too long, preferably no more than 1 hour, in case the motor overheats and burns. When cleaning the carpet, the dust should be removed according to the direction of the carpet surface to make the carpet surface flat and remain the same. (7) Clean the vacuum cleaner. After use, close the switch, remove the power plug, disassemble the accessory and the fuselage, clean the dust on the dust bag and the dust filter, then put the filter back and put it in the dry tool room for use. The dust bag can be washed with detergent, washed with washing, dried and then put into the vacuum cleaner. The dirt on the outer casing, wires and pipes of the vacuum cleaner can be scrubbed with a rag with detergent, then wipe off the residual detergent with water and dry with a dry cloth.

The above is the record of the use of vacuum cleaners made by Linsheng Electrical Co , Ltd. friends who feel useful can like a point, more electric products, auto parts can pay attention to Linsheng Electrical Co , Ltd. official website: https://www.linsheng.com

　　

Air compressors are one of the main mechanical power equipments of many enterprises, and it is very necessary to maintain their safe operation. For example, in the role of cars, Linsheng Electrical Co , Ltd. stated:

　　
Keep the oil in the oil pool within the scale, and the grade of the lubricant should meet the requirements.

　　
Check that the amount of oil in the oiler should not be lower than the tick mark.

　　
Turn the manual wheel before driving, fill the cylinder with oil, and see evenly enough oil droplets from the oil sight.

　　
After assembly or regular parking, you must check the car before the first drive to check for abnormalities such as abnormalities, impacts, and jams.

　　
Remove all items that are obstructing work on and near the machine, and the protective cover should be securely fastened.

　　
Check that the exhaust line is clear and the bleed valve should open.

　　
In order to reduce the load at start-up, the relief valve should be closed or the oil-water purge valve should be opened to keep the discharge pipe under no pressure.

　　
Open each cooling water valve, the water flow should be smooth, no air bubbles.

　　
The electrical part should be prepared for driving.

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The pure electric coupe K50’s outstanding driving performance and precise control are impressive.

　　
On October 31st, EV Century visited Huate Electric, the battery system manufacturing base of the high-tech zone in Suzhou, and communicated with the professional leaders to gain an in-depth understanding of the technical details of the prospective K50 rechargeable energy storage system RESS.

　　
The jump start manufacturers said: As the core of electric vehicles, the battery system directly determines its endurance, power and safety performance. Therefore, many OEMs regard the development and manufacture of battery systems as their core competence.

　　
The jump start manufacturers will tell the unique advantages of the promising K50 battery system from several modules:

　　
The future K50’s RESS system consists of 10 battery standard boxes connected in series (a total of 600 batteries, each standard box structure is 6 and 10 strings), voltage 365V, battery pack total capacity is 78.84kWh, energy density 134.35Wh / Kg, the total mass of the battery pack is 587kg. Based on the performance of the current domestic mainstream pure electric vehicle battery system, the light weight of the future K50 RESS system is doing well, and the system energy density is at the industry average.

　　
The standard box structure of the RESS system is different from that of many car companies. At present, the battery packs of most pure electric vehicles are tiled on the chassis, and the K50 battery pack has a T-shaped layout, which is directly related to the K50’s coupe structure and front and rear axle weights. In comparison, the battery pack is tiled on the chassis to obtain a larger interior space. The structure of the standard box is more secure, there is a certain stroke buffer in the event of a collision, and the configuration and space arrangement are also more Flexible, after the after-sales phase, if there is a problem with the battery, it is easy to replace.

　　
The battery core is the core of the RESS system. The future K50 uses a high-performance ternary lithium (NCM) soft-packed battery.

　　
Why use a soft-packed battery instead of a cylindrical or square-shell battery? Meng Tao, deputy general manager of Walter’s electric technology, said that the short board of the cylindrical battery is small in single core capacity. For example, the 18650 single core capacity of Panasonic is 3.2Ah, which leads to a large number of batteries for each battery system. Consistency requirements are extremely high and the difficulty of battery management is increased. For example, the Tesla Model S P100D uses 8256 18650 batteries. Although its battery management technology is very advanced, there are frequent safety incidents such as battery fire and burning.

　　
In addition, the cylindrical battery core has a low utilization rate for space, and the volume of the same capacity battery pack is larger than that of the soft pack and the square battery. Cylindrical cells typically have a cycle life of 500 cycles, which is shorter than square and soft cells.

　　
Compared with square-shell cells, soft-packed cells have poorer safety, energy density, and temperature uniformity. Specifically, the excessive internal pressure of the soft-packed battery is a slow-release process when the pressure is released, and the pressure relief of the square-shell battery is explosive. The soft pack has a small thickness, which is good for heat dissipation of the battery core and good temperature consistency.

　　
Among the top battery companies in the world, LG Chem chose a soft-package battery route. Samsung SDI and BYD chose the square-shell route. In the Ningde era, it only used square-shell batteries, and now it has joined the soft-package route camp.

　　
Around the core of the battery, the other four subsystems of the RESS system—mechanical systems, thermal management systems, battery management systems, and electrical systems—work efficiently and closely to achieve the five goals of the system: high security, long life, and high performance. Lightweight and low energy consumption. The details are described below.

　　
Mechanical system: The flexible material is connected between the battery core and the battery core, which can both compress the battery core and absorb the deformation caused by the “breathing effect” (about 1.8%). The module is assembled with metal straps for proper compression and flexibility. The modules are connected without bolts to avoid screw failure.

　　
The standard box is fixed by the suspension device, effectively absorbs the vibration of the road surface, and is double-fastened with a flexible metal belt to effectively buffer the collision energy.

　　
The battery case is made of non-conducting high-strength SMC composite material, the strength is close to that of aluminum alloy, the weight is 40%-50% lighter than steel (density 7.9g/cm3), the insulation performance is excellent, and the insulation resistance (water immersion 24h) ≥ 1.0x1013Ω

　　
Electrical system: It meets the high-voltage electrical connection of high-performance urban sports car with ultra-high charge and discharge requirements. The transient discharge carrying current can reach 1080A, the sustained discharge carrying current can reach 450A, and the long-term charging carrying current can reach 216A.

　　
Structurally, the soft copper row connection of the three-dimensional shape is used to effectively mitigate the vibration excitation of the xyz three directions. At the same time, the high-voltage electrical connection meets the IP67 protection rating of the vehicle.

　　
Battery Management System: The distributed BMS software and hardware architecture can meet different serial-parallel modules and different battery layout types, and can monitor battery data in the life cycle of each battery box; active addressing/encryption system prevents unauthorized authentication. The battery is mixed into the RESS system to improve the security and consistency of the RESS system from the source; the local and cloud data dual monitoring/backup mechanism monitors the battery health status in real time; the high-precision signal acquisition system has a current detection accuracy of 0.5%, which is a battery. The state estimation provides a solid foundation; the multi-channel collision redundancy design guarantees the high-voltage safety of the collision to the utmost extent; the excellent charging adaptability matches the charging piles of most large-scale operators, and the number exceeds 240,000.

　　
Thermal management system: Firstly, the battery pack adopts the thermal insulation design concept, and adopts the composite material shell, mica sheet, insulation cotton, etc., to minimize the heat exchange between the environment and the battery core, and has the passive heat preservation function. In the -20 ° C environment, the heat dissipation power reaches 50W, which is only 25% of the metal material casing.

　　
Second, the active liquid cooling / liquid heat temperature control system is adopted. The waterway system adopts a parallel circuit design to ensure that each standard box can obtain sufficient heat exchange, minimize the temperature difference between the cells, and improve the temperature uniformity.



　　
Under the ambient temperature of 0~45°C, the system temperature difference is less than 3°C; the ambient temperature is -30~55°C, the system temperature difference is less than 5°C, the -30°C environment is allowed to stand for 24h, the thermal management is turned on for 20min, and the 100km acceleration time is increased by 50. %; 45 °C environment, standing for 12h, thermal management for 20min, 100km acceleration time to achieve optimal.

　　
The combination of BMS and battery thermal management system greatly improves the reliability and durability of the battery pack. The battery system capacity attenuation can be controlled within 5% within the past 50 years.

　　
As a pure electric coupe with a driving performance, the K50 is equipped with a front and rear dual-motor four-wheel drive system to ensure efficient power output. The 0-100 km acceleration is only 4.6 s and the maximum speed is 200 km/h. The total peak output of the dual motor reaches 280 kW and 580 N.m; however, the total output in Boost mode reaches 320 kW and 680 N.m.

　　
If the frequent use of Boost mode can cause damage to battery performance? The large current discharge test conducted by professionals shows that the 5.5C discharge does not cause battery life decay after 20,000 cycles, and after 30,000 cycles, the battery life will be attenuated. If you use Boost mode 10 times a day and 300 days of driving per year, you can support 10 years of use.

　　
In addition, it has been said that in actual driving, the Boost mode depends on the battery status, such as power (more than 70%), battery temperature, etc., especially temperature is critical. If the battery status is not allowed, Boost mode will not be triggered to minimize battery abuse.

　　
In Boost mode, the discharge current of the K50 in the future reaches 5.5C (the discharge current during normal driving is about 4C), which can generate strong driving force in an instant, excellent acceleration performance and precise control, which brings rich driving of the coupe. pleasure.

　　
In addition to the high-current discharge test, the fast charge performance test shows that 2C charging will cause the battery to fail quickly. 1.5C charging will cause serious deterioration of battery life, which can be regarded as the boundary between overuse and abuse. 1.2C charging will result in A slight decay in cell life can be seen as a dividing line between normal and overuse. The fast charging time of the future K50 is 80% to 45 minutes, and the charging rate is controlled at 1C.

https://www.linsheng.com　　

Multi-function waterproof LED spotlights are available for a wide range of applications in home, commercial or architectural applications. Tired of changing halogen lamps?

　　
Are you tired of keeping the air conditioner fully exploded just to balance the heat output of the halogen spotlight?

　　
Eliminate the wasted energy of additional cooling costs and the waste of time to replace inefficient halogen or sodium halide bulbs. Switch to FlowLighting’s ultra-efficient, high-intensity LED spotlights.

　　
Spotlight Company Introduction: This small dome unit has an incredible impact and precise cutting function for flawless illumination for over 50,000 hours! In hard-to-reach places, the lamp is no longer replaced every six months. With an energy consumption of only 1 watt, you can forget the high energy costs, not only because of the energy saved by the spotlight, but also to save energy without having to evacuate the air conditioner to balance the halogen ballast/sodium halide thermal ballast.

　　
Oznium’s ultra-efficient LED spotlights use only 1 watt. This is less than 2% less energy than a normal halogen spotlight! You can replace a 60 watt spotlight with 60 spotlights, more light output and the same energy footprint! Because the LEDs are specially designed in aluminum, heat dissipation is not an issue, you can keep the spotlight around the clock and cost less than $3 a year. This product is the epitome of efficiency, all mounted on a small dome.

　　
According to the Spotlight Company , this super spotlight can be used for a variety of lighting tasks in the home or business, including: art lighting, fountain lighting, garden spotlights, track lighting or anything you can imagine. Because they are waterproof, they can be used outdoors, regardless of the weather. Each unit also includes two screw holes that can be installed almost seamlessly anywhere.

　　
The product is completely waterproof. Once you’ve secured the wire, it can even be submerged for years of underwater brilliance. Your choices are endless, as this beautiful LED dome module has six eye-catching vibrant colors: warm white, cool white, red, green, blue or amber.

https://www.linsheng.com