Lighting Principles and Advantages of LED Rope Lights

LED rope lights are made trough welding LED lights with specific processing technique onto a copper wire or flexible stripe PCB (printed circuited board) and then connecting to the power supply so as to give out light. The rope lights get the name for their rope-like shape when shining. There are conventionally two kinds of LED rope lights-flexible LED rope lights and rigid LED rope lights. The former are applicable to irregular and narrow spaces. Due to the endurance of arbitrary inflection and winding which is especially true for neon string lights, they can be formed to various images in ads decoration. While the latter are convenient for processing and assembling as well as fixing.

Lighting Principle
The core of LED is a chip composed of a P-shaped semiconductor and an N-shaped one which release the spare power in the form of light when uniting together. Thus electricity energy is transformed into light energy. When the P-N tie is given a reverse voltage, the minority current carriers cannot be injected, and the light doesn't sparkle. Whereas when given a direct voltage, the current flows from the positive pole to the negative pole and the semiconducting crystal gives out various colors of light ranging from infrared rays to ultraviolet rays of which the intensity depends on the current.
Advantages
Flexibility: LED neon rope lights take extremely soft FPC (Flexible Printed Circuit) as their substrate, so they can be curled like a wire and won't break upon arbitrary winding.
Pure color: high-brightness patch LED is adopted as light-emitting component, making the brightness of a white-light rope as high as 5,000 mcd, which provides the light rope with the merit of LED luminous element. So the light is pure, soft, and without dazzle, enabling the LED rope lights not only for decoration but also for illumination.
Low caloric value: since the luminous component is LED of which the power is very low, often from 0.04 to 0.08 watt, the heat emitted is not much. In this sense, the LED light rope can be used as decorative illumination in the fish bowl without producing much heat that elevates the water temperature and affects the ornamental fish growing.
Energy saving: the power of an LED light rope ranges from 4.8 watt to 7.2 watt only every meter, lower than conventional luminous lights and decorative lights several times in spite of the much better lighting effect.
Environmental protection: whatever the composing material of the LED strip lights is, LED or FPC, it's environmentally friendly, because they belong to recyclable materials and won't pollute or damage the environment though much used.
Long life: the normal service life of an LED light rope is from eighty thousand to a hundred thousand hours. Even working constantly for 24 hours a day, it can endure nearly ten years. Therefore, the life of LED rope lights is several times that of traditional lights.
Broad application: it is widely applied for luminous ornaments of buildings, steps, exhibition stands, bridges, and hotels, as well as fabrication and design of advertisement signboards, large animation, and calligraphy and paintings.
This article comes from: http://www.yourlite.com/news/40010.html

Comparison of Advantages and Disadvantages between LED Lamp and Induction Lamp

Both LED lamp and induction lamp are epoch-making products which highlight the lives of human beings. And nowadays they have been granted with new roles for commercial activities by the commercial lighting company. For instance, China is always regarded as a country that is expert in manufacturing both commercial lighting and industrial lighting fixtures. And China Induction lamp enjoys great popularity among the lighting market. So, how much do you know about the pros and cons of both LED and induction lamp?

Advantages of LED Lamp
LED lamp consumes less energy when compared with traditional ones. Besides, led lamp possesses quite long service life which can even reach up to nearly 100,000 hours. Longer lifetime will save a lot of cost for the users. More importantly, LED lamp is capable to provide the users with adequate illumination so they don't have to turn on their ceiling lights all the time. Last by not least, LED lamp is very impressive to the users since it is designed in an environmental-friendly way and it is mainly made of non-toxic materials, which makes LED lamp easy for recycling.
Disadvantages of LED lamp
The most noticeable demerit of LED lamp is that the color matching can be challenging. Some LED lamps are restricted from the mainstream for commercial lighting or industrial lighting for the simple reason that many LED lights provide by the lighting factory emit a slightly bluish light. Moreover, high upfront cost is also regarded as a disadvantage for LED lamp.
Advantages of Induction Lamp
Induction lighting is energy-saving as well. It is widely acknowledged that energy savings mean great impact on the operation costs. In addition, induction lamp is very durable for it is capable to last 5 to 10 times longer than traditional lamps. Moreover, induction lamp helps the users minimize maintenance costs in terms of its longer lifetime. More importantly, during the operation, induction lamp emits less noise so it can make users comfortable without a humming or buzzing.
Disadvantages of Induction Lamp
Induction lighting effect is not ideal in cold conditions. Besides, as hazardous materials, induction lamps are difficult for recycling since a mishandling will lead to disastrous consequences. Moreover, induction bulbs cannot be dimmed nor focused and it can only provide flood lighting fixtures, so it is not the ideal choice for users in some occasions.
In conclusion, both LED lamps and induction lamps have peculiar merits and demerits. So, when choosing the most suitable lamp for industry lighting or commercial lighting, we should focus on the requirements accordingly before we purchase lamps from the lighting factory.
This article comes from: http://www.ynllighting.com/news/39934.html

Several Practical Tips for Proper Selection of Junction Boxes

It is widely accepted that junction boxes not only help establish electrical connection between different electrical apparatuses but also help protect these electrical apparatuses in the long run. For this reason, great care must be taken to the proper selection of junction box. Only in this way can we experience the incredible benefits brought by junction boxes. But, do you know how to correctly choose the most suitable junction box? And what should be noted in case of selecting your needed junction box? Following are several practical tips for the proper selection of junction boxes.

Tip 1: Pay much attention to the factor of material
In case of selection the most suitable junction box, you must, first of all, pay much attention to the factor of material. This is because different types of J-boxes greatly differ from each other in terms of raw material. While some J-boxes are made from plastic, some J-boxes are made from waterproof materials or explosion-proof materials. What's more, differences in terms of material usually cause these junction boxes to greatly differ from each other in terms of performance and quality. Thus, in case of the proper selection of junction box, you need to note this point and carefully check the material of the particular type of junction box that you are about to choose.
Tip 2: Place considerable emphasis on the application status of junction box
In choosing the most appropriate type of solar junction box, you are also supposed to place considerable emphasis on the application status of junction box, according to solar junction box manufacturers. The reason for this is that actually different types of junction boxes are quite different from each other in the aspect of specific application. For instance, solar junction box is mainly used for the electrical interconnection between different solar apparatuses such as solar panels and solar cells, etc. Waterproof junction box, on the other hand, is mainly used in those environments which have very strict requirements for waterproof level. Hence, it's necessary for you to get to know the specific application of the particular type of junction box and make sure that it suits you perfectly.
Tip 3: Make clear your specific requirements
In addition, you also need to take into account your specific requirements when it comes to the proper selection of junction box. To be more precise, you need to make clear your main purpose before buying junction box. Ask yourself such questions as will waterproof junction box meet my requirements perfectly and do I need to choose PV junction box. In this way, you can minimize the possibility of buying unnecessary or unsuitable junction boxes in the end.
Tip 4: Make a comprehensive comparison
Apart from these, it's also of utmost significance for you to make a comprehensive comparison between several different types of junction boxes that are available. Thoroughly analyze these junction boxes and choose one that not only meets your requirements but also can offer you superior performance and excellent quality in the long term.
This article comes from: http://www.qc-solar.com/news/39838.html

Cummins Generator Makes Much Convenience in People's Work and Daily Life

Cummins is the largest generator manufacturer in the world. Genset Cummins China is one of the manufacturers who do the local production in the early period. Cummins genset manufacturer mainly produces engine, generator set, alternating current generator, filtration system, turbo-charging system and fuel oil system and so on.

The types of Cummins generator sets are composed of rotating magnetic field, single bearing, no brush, structure of drip proof and H class isolation. The generator can be used in some bad conditions, such as in sand salt, seawater or the situation of chemical corrosion. The standard configuration of Cummins generator includes diesel engine, alternating current generator, control system, heat-removal system, filter system and other attachments like silencer, undulator and bend pipe. The reason why Cummins generator is popular is mainly based on its excellent skill performance. Its stator is the structure of skewed slots which will effectively restrain the wave form distortion of current in middle line and output voltage. Its rotor which is through dynamic balance before assembling will directly connect with engine by flexible drive disc. The improved damper winding will reduce the shock when it is in parallel connection. When the generator needs to cool, it can directly drive its centrifugal fan.
All of these advanced equipments make Cummins generator work in high efficiency and receive good replies from consumers. Cummins generator adopts PT pump technology and it consumes fuel oil. It also has reliable and steady performance, which makes it work for a longer time. When generator is out of order, it is easy to repair and maintain for workers. Cummins generator is more environmental than other kinds of generators, for its standard discharge. However, when the generator is working, it will produce much energy consumption. The consuming energy is not only exhausted, but also wears the assemblies in generator. It is significant for workers to do the maintaining in regular time, in order to extend the working life of the generator.
The common diesel generator sets are a kind of generating equipment which use diesel as the main fuel. Diesel generator sets drive to work by diesel engine. That is to say, it is the machinery equipment which is to convert kinetic energy into electric energy and heat energy. The whole diesel generator sets are composed of diesel engine, generator and controller. Compared to the common diesel generator, Cummins generator, as a kind of mature technology, has many advantages for using. It is of very high reliability and low lifecycle cost and also of high efficiency and flexibility. The high quality of its electrical performance meets many strict demands. When some generators are in parallel operation, it is equal to generator of big power to provide electricity to load. According to the load, users can decide to make how many machines work, which will save diesel and cost. It can provide uninterrupted power to guarantee the normal work. Even when changing the generator sets, it can insure that there is no need to stop electricity by using reserve sets. In addition, generators are in parallel, they will share the current when load is increasing in a sudden. This action will make the voltage steady, so that to extend the working life of the whole genset. But it needs the large one-time investment cost, which becomes the disadvantage of Cummins diesel genset.
However, it is necessary for users to pay attention to the follow-up work when generator stops working. Users should check lubricant oil, fuel oil and refrigerant firstly to find whether they are in leakages or not. It is important to close fuel valve and exhausting device. When genset stops working for a long time, it should be maintained in time, start battery negative and remove electric cables. If there is a necessity, it should release fuel oil and refrigerant.
Genset Cummins China builds a close connection with many different kinds of large-scale enterprises and they have become the strategic alliances. Because of the excellent performance, Cummins generator has brought much convenience for people in production and daily life.
This article comes from: http://www.mpmc-china.com/news/39832.html

3 Aspects Help You Get Thorough Understanding of Automotive Radiators

Nowadays most automobile manufacturers and companies have employed high-tech skills in developing reliable automotive radiators since such devices are of great importance in ensuring the normal operation of the auto engines. For instance, the aluminum racing radiators enjoy great popularity among the racings lovers. So, do you have questions about the description, working principles and functions of the auto radiators? Get the answers from the following content right now!

General introduction of automotive radiators
Generally speaking, auto radiators are devices which are mainly used for heat radiation for the engines so as to get the cars operate normally. It is known that there are tremendous moving parts, and where there is movement there is friction. And consequently friction creates heat and some inner parts of the engine become excessive hot, which may reduce the mechanical properties of car engines. But auto radiators can perfectly deal with such excessive hot problems and cool the system from time to time so that the normal operation of car engines can be guaranteed.
Workings principles of auto radiators
Engine heat radiation is realized by the cooperation of auto radiators and other devices installed inside the car. That's to say, cooling system is a complicated system where the automotive radiators serve as devices which are responsible for cooling water cycling. Taking racing radiators for example, they are mainly composed of aluminum materials, particularly the pipes and oil cooler kits. Generally, the aluminum pipe is designed with flat shape and the heat sink is designed with a corrugated shape, which can achieve excellent cooling effects.
Functions of automotive radiators
Automotive radiators are heat exchangers for the automotive engines. They are mainly applied by the car manufacturers to transfer heat from the hot coolant that flows through it to the air by the help of fans inside the engines. The radiators can perfectly redistribute heat so as to keep the engine temperatures remain stable in certain indexes. Some aluminum racing radiators are folded like an accordion bellows, so that there can be a lot of surface for heat radiation. When hot coolant flows into the radiator, the heat created by the engine operation will flow out into the air form the walls of racing radiators. Moreover, large radiation surface will make the radiation process happen quickly. When the radiators cool the fluid, the fluid will flow back in to the engines and then the process is repeated again as long as the engines are in operation.
To sum up, automotive radiators are playing indispensable roles in the process of cooling car engines. Some aluminum racing radiators are both efficient and reliable so they enjoy great popularity in the racing radiators market. Furthermore, we have to believe that the auto radiators will have great development perspectives in the coming future.
This article comes from: http://www.spdmaster.com/news/39828.html

Introduction to the Electric Power Generation

Electric power generation is a physical and sometimes chemical process where power-generating facilities transform natural energy or power into electricity to fill various electrical needs of people. Water power, firepower, wind power, nuclear energy, solar energy and various petrifaction fuels can all be utilized to create electricity. The following paragraphs will focus on the advantages and disadvantages of the several common ways of power generation.

Wind power generation, as is very clear to all, is a process where wind acts as the generating force. The power generator mainly consists of the wind turbine generator, the generator, the direction-adjusting device, the speed-limiting device and the energy-storing device. During the process of generating, the vertical and horizontal axis wind generator rotate with the function of wind to transform the kinetic energy of wind into the electric energy. The speed-limiting device functions to ensure the stability of the power generator when it works. The direction-adjusting device can make proper adjustments to the rotating turbines when the direction of wind changes. Compared with other ways, wind power generation is commonly easier to be conducted, which makes the wide applications of it in reality. The disadvantages of it appear in the fact that the weather conditions will have a huge influence on the process of power generation.
The core device of the nuclear energy power generation is the nuclear reactor. This process is difficult to be controlled and may cause serious pollution to the environment if it is not strictly operated. But the efficiency of generating can be very high because the nuclear energy is transformed during that process. So, it still deserves our attention in the future. The fire power generation is a procedure where fuels like oil, coal and natural gas burn to create enough energy to heat water. After that, water steam of high temperature and pressure drives the power generator to work. The abundance of the source materials is one of the advantages. Disadvantages involve the serious air pollution.
It can be seen from the above discussion that power generation is a process of energy transformation. Different source materials are closely related to different ways of power generation. While the generating principles are always alike. The different advantages and disadvantages of each determine the different applications in the field of industry. More researches should be done to get more knowledges on the environmental protection, the economy and other aspects involved to better control the process of power generation.
This article comes from: http://www.newmeilwindturbine.com/news/39644.html

The Development Prospects of Dry Type Transformers In China

In recent twenty years, with further development of the international economy, dry type transformers have made a great progress, especially in distribution transformers. According to statistics, the use of dry type transformers accounts for 40% in Europe and the United states and other developed countries. In China, it is up to 50%. It can be seen that China is one of the largest country of selling dry type transformers in the world.

Currently, in China, as the step of urban power network construction speeds up, generating capacity and power consumption are increasing by the day. It is why dry type transformers have been growing popularity in China.
The dry type transformer adopts air convection to achieve the natural cooling effect. It is widely used in local lighting and electronic circuitry. Comparing to the oil filled transformer, dry type transformer is not immersed in oil, and is cooled by air convection or by fans, so it can not cause fire, explosion, pollution of environment and other problems. Also, this transformer has three forms: open type, closed type and cast type. The open type which is direct exposure to air is one of the mostly used form and is widely used in clean and dry indoor. The closed type mainly exist in the closed area and isn't contact with the air directly for the poor heat dissipation condition. The last is the cast type which uses exposy resin and other resins as main insulation. It is of simple structure, small size, so it applies to small transformer.
Furthermore, the dry type transformers have many performance features. First of all, it adopts advanced technology both at home and abroad. It has high mechanical strength, the ability to short-circuit resistance, good heat stability, high reliability, as well as long working life. Besides, this transformer has advantages of good moisture resistant. It can be used under long-term operation in harsh environments. What's more, it is equipped with measuring temperature system which adopts intelligient control system. Thus, it can adjust the temperature automotically during working. Not only that, the dry type transformer is small size, light weight, so it takes up small space and it only needs lower installation costs.
With popularization and application of dry type transformers, dry type transformer manufacturer also obtains great progress. In order to attract more customers, dry type transformer manufacturer insures that their dry type transformers can require minimun maintenance and provide long years of reliable trouble-free service. All in all, dry type transformers in China have the broad prospects for development.
This article comes from: http://www.ybpower.com/news/39634.html

Discussions of the Most Common Forms of Power Generation

It is believed that electricity is supposed to be one of the most important energy sources in our daily lives. Without electricity, everything in this world can't work normally. We all know that the whole world has been completely changed since the electricity had been created. We can totally say that human beings today can't live without electricity. In view of this situation, more and more sources are being taken into consideration to produce electricity in recent years. Here, we will discuss some most commonly used methods of power generation in order to find a best way to produce electricity without any bad influences.

First, Advantages and Disadvantages of Hydroelectric Generation
Hydroelectric generation mainly takes use of the power from water head which can convert water power into electricity. This kind of energy is completely clean, non-pollution and energy-saving. But we need to build different large hydropower station in order to provide enough power. Since water power is the clean renewable energy and also inexhaustible. Hydroelectric generation has been considered as one of the useful methods to produce electricity. But there still have some problems. The large hydropower station may cause some bad influences on the environment. And the cost of building station is very huge that not all the places can afford.
Second, Advantages and Disadvantages of Thermal Power Generation
We all know that thermal power generation is supposed to be the most traditional method of power generation. It requires little technologies and costs. But it could cause significant waste of resources. The sewage will also bring serious pollution to the atmosphere and environment. So more and more people being to advocate wind power generation will be definitely safe to the environment.
Third, Advantages and Disadvantages of Wind Power Generation
When it comes to wind power, people will think about wind turbine or horizontal axis wind generator which are all the necessary equipments of producing electricity. You know, wind energy is a kind of natural resource which is the regenerate energy and will never dry up. Since environmental problems have become very serious more than ever, wind power is getting more attention today. A growing number of engineers begin to design vertical wind turbine and axis wind turbine in order to make full use of the wind power. Today, the cost of building wind turbine is still very high. But with more effects have been done to solve this issue, I do believe that wind power generation will become the trend in future years.
Fourth, Advantages and Disadvantages of Nuclear Energy Power Generation
Nuclear electric power generation is a new kind of method to produce electricity. In fact, nuclear power won't produce any carbon dioxide that may aggravate the greenhouse effect. On the other hand, the cost of nuclear power won't be influenced by the international economic situation since the cost is not so high. So nuclear electric power generation is very stable. The last but not the least, the neutron and radioactive material from nuclear power could do great harm to human body, so factories must avoid people to get close to the nuclear power station.
This article comes from: http://www.newmeilwindturbine.com/news/39416.html

Proper Maintenance and Regular Inspection of Electric Power Wheelchair

Generation of electricity and development of modern technology greatly promote the development of wheelchair. Wheelchair is used for people who have difficulty in walking by themselves. But some people could not move a common wheelchair, and therefore, electric power wheelchair is produced for people who are also weak in the arms. The electric power wheelchair allows disabled people to move from one place to another place easily and conveniently. As a complicated facility, electric power wheelchair requires certain maintenance for maintaining its normal work, and at the same time, the users should also know some tips of solving simple problems of electric wheelchair.

Many users purchase cheap electric wheelchair from wheelchair manufacturers, and the suppliers often ask the users not to use the electric power wheelchair in rainy days. The electric power wheelchair provided by power wheelchair manufacturers is powered by an electric motor which could drive the wheels of the wheelchair to move forwards or backwards. Water could cause short circuit problem of the electric motor, and it is costly to repair the precise electric motor. Meanwhile, water could also damage the battery in the motor. Therefore, users should keep electric power wheelchair away from water and moisture.
Because cheap electric wheelchair has higher speed than common wheelchair, the users must be careful with daily inspection of the wheelchair. For example, users must check the brake of the electric power wheelchair provided by power wheelchair manufacturers. When electric power wheelchair runs faster, the brake should be effective to stop the wheelchair to prevent potential danger. Wheels of the wheelchair should be in good condition because the users are not able to repair them when they are broken on the road. Besides, all components and small parts should be fastened tightly to ensure the stability and reliability of motor electric wheelchair.
Except daily maintenance and inspection, the users should also know some simple tips in repairing the wheelchair. Some users find that their wheelchairs generate noise when they move. As a matter of fact, the users could only use some lubricating oil to lubricate the shafts, bearings and movable parts of the electric power wheelchair. If noise still exists after you use the lubrication oil, you should ask help from professional to check the condition of your bearings or shafts but not try to repair it by yourself. Proper maintenance and regular inspection of electric power wheelchair could allow the users to enjoy the convenience brought by it and avoid problems.
This article comes from: http://www.beiz-tech.com/news/39408.html

Vacuum Circuit Breaker: New Favorite in Electrical Equipment

With the widespread use of vacuum technique like a vacuum dryer, recently, it has been applied to the switchgear. Yes, it's the vacuum circuit breaker. Among all the types of circuit breaker, vacuum circuit breaker is still outstanding. Compared with traditional circuit breaker, what on earth feature does it have?

Smaller body and simpler structure:
The volume of vacuum circuit breakers is much smaller. It allows workers to move or place relatively expediently, and it saves much more space. Its complex structure becomes simpler. It's easier for users to control. Naturally, the error probability is decreased.
No oil and seal-off contact:
We know the oil circuit breaker hides a risk of blast. You never know when the danger comes to you. Unlike the oil circuit breaker, high voltage vacuum circuit breakers are much safer, because of no oil. Additionally, with a sealed contact, the dust, damp or harmful gas can't affect its original performance.
Environmental protection as well as energy conservation:
This type of circuit breaker definitely saves more energy consumption. Meanwhile, there is no adverse impact on its working efficiency. Another feature is that it's an eco-friendly equipment. There is less noise or pollution during it runs.
Longer working life:
Lastly, it's able to work for you for about 20 years. As long as you care for it correctly, I believe it can work for much longer. Vacuum circuit breaker is definitely superior to the traditional one like an oil circuit breaker. It doesn't mean there is no need of caring for it in daily life. This step is also momentous.
(1)It's clear that the first step is to keep it clean. Rub it with a soft and clean cloth. Make sure that any dirt is totally get rid of.
(2) Change or add new lubricating oil regularly. As a result, moving parts can remain flexible all the times.
(3) If there is something wrong with fastener, vacuum circuit breaker can't work normally. Hence, check each fastener at regular intervals. Ensure that each one is in good condition.
(4) Use some new parts to replace the broken ones in time.
(5) Keep an eye on the vacuum degree, contact connection stroke, contact pressure, insulating property and closing speed. For abnormal phenomenon, you should check and adjust.
By adopting the vacuum technology, each performance of circuit breaker is enhanced a lot. It becomes more convenient, economic, durable, etc. Facing several types of circuit breaker, which one is more popular with customers? Of course, an excellent equipment with less investment will become the first choice. If you are on the lookout for a circuit breaker, you may consider the China distribution transformer. The equipment from China is also very good.
On the other hand, there are still some demerits. It's OK. I believe that they will be overcome in the days to come. Routing maintenance is another key you must pay attention to. It's because you will benefit more.
This article comes from: http://www.delixi-sh.com/news/view/39348

Between Oil Immersed Transformers and Dry Type Transformers

Oil immersed transformers, different from dry type transformers, are transformers whose iron cores and windings are submerged in insulating liquid. Compared with dry type transformers, oil immersed transformers' iron cores and iron rings adopt vacuum drying, which is among the most significant differences between oil immersed transformers and dry type transformers. Though both being frequently-used transformers, oil immersed transformers and dry type transformers are different in many respects and either kind of transformer has its own advantages and disadvantages.

One of the differences between oil immersed transformers and dry type transformers is their application environments. Oil immersed transformers, especially oil immersed distribution transformer, due to their transformation ratio of 20KV/500KV or 20KV/220KV, can be well applied at high voltages, which is one of their huge advantages and makes them appropriate to heat-engine plants' booster stations. But the disadvantage is that oil immersed transformers' application is restricted when faced with relatively lower voltages. By contrast with that, dry type transformers are suitable to serve as middle and small-capacity transformers of the illumination and electronic circuits in upscale places like office buildings and guild halls, because of their transformation ratio which is 100000V/400V.
Oil immersed transformers' voltage classes can be very high and their floor spaces are smaller than those of dry type transformers. In addition, oil immersed transformers are of better heat dissipation potential and more extensive operation places when compared with dry type ones, which is an advantage enabling them to be applied out of doors. However, oil immersed transformers may produce oil injection or flame if meetting with machine breakdowns, which makes them inappropriate to use indoors. In this respect, dry type transformers' advantages are revealed just enough. Dry type transformers are clean, safe and they are of superior fire resistance, which makes them appropriate to places with stringent fire protection requirements.
Price is another factor we should take into account. In terms of same capacities, the procurement price of dry type transformers is much higher than that of oil immersed transformers. Though oil immersed transformers have price advantages, dry type transformers can withstand short circuits better and are more easy to install. Also, the heat resistance of dry type transformers is an advantage which oil immersed transformers can not match. But one of dry type transformers' disadvantages is that they must be operated at rated capacity, which is not so flexible for using. By contrast, oil immersed transformers are of better overload capacity and their service conditions are not restricted by the rated capacity too much.
This article comes from: http://www.ybpower.com/news/39330.html

The Advantages and Prospect of Electromagnetic Induction Lamp

Following the improvement of people's living standard, the high-quality of lighting devices attach great importance to more and more people and the harms of the traditional fluorescent lamp are gradually recognized by people. With the development of science and technology, people have found the mutual connection of light, electricity and magnetism, and after longtime understanding and experiment, scientists finally invented the new generation lighting device-induction light and the corresponding products. With its unique advantages, the induction lighting fixtures have been widely used in a lot of fields.

The lighting field has got great improvement with the progress of science and technology, but the traditional lamps are under the restriction of electrode, so people will find there are great limitations in the manufacturing and the application life span.
Besides, the traditional lights will bring various kinds of pollutions to the environment. Although the invention of LED has solved some problems, the high intensity and extensive lighting area have been solved until the invention of induction lights, especially the application of induction street lights for the urban lighting projects. Compared to the traditional lighting devices, the electromagnetic self-ballast induction lamp has the following unique advantages.
The induction lights don't have any electron-tube heater or electrode which will restrict the lifespan of lighting sources, so the frequent circuit changing will not affect the use of it. Besides, the induction lamps are easy to install, people just need to use the induction lighting fixtures to reduce the risk of falling. Due to its unique design and features, the induction lamps do not need to maintain, so it largely reduces the repair and changing cost. Furthermore, the induction lights also have the function of protecting eyesight without any strobe.
Currently the environmental protection is the primary problem of human living and global economic development. China is a great population country, so the developments of the China induction lamp will large save the energy and resources. On account of the principle of aerial discharge and electromagnetic induction, under the same luminance, the induction light will save over 80% energy than filament lamp. Besides, the warm light of 400W induction lamps has high luminance and less electricity consumption, and it will reduce the risk of environmental pollution. As a result, it is totally according to the requirement of environmental protection, lighting and green lighting, induction lamp suppliers should grasp this great potential under the gradually increasing of energy crisis and greenhouse effect.
Besides, it can boot under the ultra-low voltage, and this design can fully accord with the global voltage. The induction lights have a wide social and market potential and it will fully improve the lighting quality of whole human beings.
This article comes from: http://www.ynllighting.com/news/39338.html

The development of power transformers market

It is introduced that the development of power transformers manufacturing technique is basically in the characteristics of new products and new structure, and it focuses on improving the product quality and reliabilty through the application of new materials and new equipments, but it needs the support of a lot of money.

As a chief component of power grid, the cost of materials makes up more than 60% of the whole product cost. Silicon steel sheet is the main material of power transformers, but our own output is very limited, and it has alway depended on imports during a relative long period. It is understood that the materials shortage problem that restricts the development of power transformers has been solved, and it happeds to provide better condition for the power transformers industry.
One of the main problems of most power transformers manufacturers is low degree of automation of the critical equipment during the transformers producing process. Besides, there are some manufacturers that need improvement on the aspects of efficiency, reliability and stability. All of these shortages will affect the run of the entire power grid.
In the modern world, everything is required to be environmentally friendly, so is control transformer, so green, environmental protection and energy-saving will be the trend in the future. In recent years, the price of the iron core and electric conduction materials of electrical transformers rise continuously. Because of the developments of electrical transformers industry, technical innovation will be the only way to go. At present, the foreign markets have deloped a kind of high-polymer soft magnetic composites material to produce high-frequency electric transformers and inductor, but we still have not achieved satisfied results in this aspect.

This article comes from: http://www.ybpower.com/news/39092.html

The development of domestic power transformers industry

Electrical transformer is a kind of static electrical equipment, which is used to distribute the alternating voltage (current) of a certain value into alternating voltage (current) of several different values. According to the results released by the AQSIQ in the thrid quarter of last year, in the 29 kinds of electrical transformers provided by 29 enterprises, there are 6 kinds of products do not conform to the requirements of relevant standards, so the percent of pass is only 80%. The result basically reflects the current quality standard of the domestic power transformers manufacturer. After so many years of continuous development, we can say that the integral level of the domestic transformers industry has reached the international first-class level at present, and the quality is almost the same with imported products.
As we all know, to reach the top level of global transformers industry, we should focus on two aspects: product capacity and voltage level. At the beginning of the eleventh five-year plan, China has been a leading global producing and applicating country, but not strong enough. At that time, there were only a few enterprises can produce 500KV ultra high voltage transformers in China, so the market of ultra high voltage transformers was occupied by those foreign enterprises. As the running of UHVAC demonstration project, domestic transformers enterprises usher in the new opportunities and development space.
At present, China has had the ability to produce the world's leading distribution transformers, and our products have been exported to the Europe, Oceania, Africa, Asia and many other countries, which fully embodies that the China-made products have been accepted by the world widely. The official in charge of the branch of China electrical transformers industry association, said that in the future, power transformers will develop to aspects of energy-saving, low noise, fireproofing, anti-explosion and high reliability. There are two main developing directions: one is to high voltage and ultra high voltage direction, especially 750KV and 1,100KV; and another is to energy-saving and miniaturization direction. The former is mainly applied in long distance electric transmission and distribution circuit, while the later is mainly applied in urban electric transmission and distribution circuit.

How to Choose the Best Fire Pump in the Fire Ptotection System

In our daily life,a street motorcycle pump is an ordinary device when we are riding a bicycle or motorcycle. As we need to pump air into our tires when we have flat tyres.But when you meet a fire dizaster,the fire pump is also a essential equipment.It works similiarly to the street motorcycle pump.The only difference is fire pump which is used to  pump water or foam into the burning places.Of course,the fire fighting pump is crucial to the design of fire control system whose heart is made of  water or foam,providing power for fire fighting medium.The fire pump has its own characteristics.It requires intermittent duty,high reliability and wide operating range.We can choose different ways of driving to the same parameters of the pump.So when we design the whole system,we should compare and choose rather carefully.It is centrifugal pump whioh is widely used in the fire control design.It main includes:the opportune pump,S(SH)pump,DL pump,D pump and XB pump.Now many manufacturers have introduced a variety of special pump for fire protection.In addition to the using places of individual large flow and high head,we can always choose the suitable parameters pump in aboveall models,with the protection reference of Model GDL in gereral fire design.Model GDL owns the advantage of occupying small area,adjusting in and out of the watergate direction,covering wide water pump parameters.Especially in commerce-residence building fire control design,for the purpose of saving land,basically adopts DL pump group.Then I shall deal you a perfect hand for choosing the right pump,combining with the various aspects of working place,driving mode and cost,etc.

A fire pump is a part of a fire sprinkler*s water supply and can be powered by electric,diesel or steam.It*s a big investment for us to design a fire-fighting pump system.It costs us a lot to get an optimum fire pump.

1.Read the manual first.
Try to read the manual carefully and get to know the pump is suitable to be used.As it*s always used at the time when we facing danger,we must operate it properly.

2.Make a shedule for checking.
After a period of time,we should check every part of the whole system.Besides,we should especially check the fire pump set,as it consists of group of fire pump,power source,control cabinet and auxiliary device.You must check one by one.

3.Solve the problem right away.
When you find the device or components a little unusual,if you can solve it,do it right now.If you can*t,don*t put it off till tomorrow,ask somebody who can solve to do it.

4.Seek help from Internet.
Chat with someone who is using the same pump.Remember your are not the only one who used the fire pump.You can share the experience with other friends.

5.Keep in touch with the after sale service department.
Remember this department*s telephone number.If you meet any difficulties or troubles while you are using the pump,call them right away.They can provide professional services.

It is the most dangerous place at the fire-buring place.We should not start to dig a well when we become parched with thirst.Hope you can find the pump with great satisfaction.
This article comes from: http://www.pacificpumpgroup.com/news/39080.html

The advantages of LED indicator lights

At present, LED lights have replaced filament lamps to be applied in traffic lights, caution lights and signal lights etc. Compared with filament lamps, LED indicator lights are characterized by lower power consumption, long life span and ultra-high brightness, and it will must be the ideal light source of indicator lights in the future. Following are the advantages of LED indicator lights:

1. The visibility is great
LED indicator lights can even keep good visibility and performance in conditions of continuous illumination, raining, dust and other bad weather situation. LED gives out monochromatic light, so it doesn't need color chips to generate red, yellow and green signal colors. The light from LED is directional, and it has a certain
divergence angle, so we can abandon the aspheric retroreflector used in the traidional indicator lights. This characteristic solves the aspheric and color fading problem of color chips that exist in traditional signal lights, which improves lighting effect.
2. Power saving
Its advantage in power saving aspect is very obvious, and one of the most signigicant features is low energy consumption, and it makes much sense to the application of lighting fixtures. Take the LED traffic lights as an example, the excitation energy from LED can be turned into visible light almost a hundred percent, while there is 80% of excitation energy from incandescent bulbs may becomes thermal energy, and only 20% can turn into visible light.
3. Low thermal energy
LED converts electrical energy into light source directly, so it can avoid excessive heating. And the cooling surface of LED traffic lights can protect the servicemen from scalding.
4. Long life span
LED traffic lights are usually required to work normally in bad weater conditions, no matter it is in freezing winter or in sultry summer, exposed to the sun or rain, so it has ultra high requirements for the reliable performance of the LED indicator lights. In general, the average light span of incandescent bulbs used as indicator lights is 1000h, and that of low voltage halogen lamps is 2000h, and their maintenance cost is relatively very high. But LED indicator lights don't have the problems of shaking problem of filamentary cathode and fracturing problem of glass shade.
5. Quick reflexes
The quick reaction speed can reduce the occurrence frequency of accidents effectively.
Traffic lights play an important role in the urban traffic, and there are a large number of traffic lights that need to be updated every year, so it is fresh market for LED lighting manufacturers. The high profit is also good for the development of both producing and designing of LED lighting fixtures, which will provide optimal stimulation to the entire LED industry.
This article comes from : http://www.tayee-electric.com/news/38092.html

Arcylic panel has been increasingly used in aquarium

With the rise of ecological, environmental protection household concept, aquarium is no longer a synonym for glass jar, and it becomes more harmonious with our household circumstances. Those updated aquariums with innovative technical features become more and more popular by customers. Here I want to introduce a unique aquarium whose cylinder body is made of acrylic sheet. Acrylic is commonly known as organic glass, and its transparency can be compared with crystal, and its light transmittance can be as high as 92%.

From the apperance, it doesn't look quite differently from ordinary glass jar. The weather fastness of acrylic sheet of excellent, and both the hardness and ultralow temperature functional parameters are very high, while its density is only half of ordinary glass. The abrasion resistance of acrylic aquarium is very close to that of aluminium, and it can resist corrosion by various chemicals. Besides, its performance in ultraviolet resistance is very excellent, and it also has the properties of fire retardant, heat preservation and plasticity. All of those characteristics improve the security of this aquarium largely. Even the sealant of the acrylic sheet is also luxurious. According to the introduction, good sealant should be acidic, which can make sure the aquarium will not break if soaking in water for a long time.
Many fish fanciers don't use aquariums because it is difficult to change water. But with the adoption of new technology, the modern aquariums can realize automatic drain function through filter tank, so the changing water process becomes very convenient.
Many manufacturers can also customize aquariums of different styles according the different household circumstances, which is generally realized by chaning the cabinets below the aquariums. If it is for Chinese style, you can choose the customized annatto cabinet, and if it is for European style, you can choose a white elegant cabinet.

This article comes from: http://www.luchuan-acrylic.com/news/38068.html