China SINGI GROUP established in 1995, formed by ZHEJIANG SINGI ELECTRICAL LLC、SHANGHAI SINGI ELECTRICAL CO.,LTD、SHANGHAI SINGI WIRE AND CABLE CO.,LTD、ZHEJIANG JONAN METAL STAMPING CO.,LTD, registered capital more than USD 10millions, committed to building electrical & intelligent household integrator(Intelligent household products、power distribution control system products、illuminating control system products) and low-voltage electrical appliances’ metal accessories R & D、production and sales.
(1) Failure caused by the material of the components in the distribution box:
① There is a big gap between the distribution box manual and the actual technical data.
②The management of the purchase and storage of the distribution box is not strict.
③ The technical disclosure of the construction of the distribution box is not clear, which brings unnecessary constraints to the installation and use of the distribution box, resulting in operating failures.
(2) Distribution box failure caused by construction:
①The quality of the accessories of the distribution box is not strictly controlled, which will cause hidden dangers to safe operation.
②The installation process is not up to standard, such as: the cleaning inside the box is not thorough.
③ The material configuration of accessories in the distribution box is not up to standard.
④Insufficient and inconspicuous signs in the distribution box, and inadequate sealing of the distribution box in a humid environment, all of which have left hidden dangers for the operation of the distribution box.
(3) Distribution box failure caused by poor management and maintenance of the operating unit:
① Maintenance inspection and testing cannot be carried out regularly.
②Faults caused by seasonal natural rain, wind and snow, scorching sun exposure and other factors, such as; grounding bolts rusted, loose and other factors.
(4) Distribution box failure caused by other reasons:
①For the temporary power load, long-term calculation or inaccurate statistics cannot be considered, and the distribution box is overloaded, causing failure.
② The wiring holes at the upper and lower ends of the components in the distribution box do not match the diameter and cross-section of the incoming and outgoing wires or cables, resulting in hidden dangers for power supply.
③When other majors construct near the distribution box, damage the power supply circuit and cause it to be short-circuited or grounded, resulting in the failure of the distribution box.
Distribution box It is mainly installed outdoors. But in the process of use, why does it have the phenomenon of leakage? Let me give you a brief explanation today!
This phenomenon occurs, mainly because the ground wire is not connected well or is not grounded.
Secondly, if the equipment on it is found to be aging, there will also be leakage.
Faced with this situation, it is necessary to check whether the wire is not connected properly or the wire is aging.
In daily life, if it has leakage, then it is necessary to find out the reason.
1. In common parlance, the distribution of electrical energy is called the distribution box. Mainly used for the control of electrical equipment, power distribution, overload, short circuit, leakage of the line to play a protective role. Distribution boxes are installed in various places, such as schools, institutions, hospitals, factories, workshops, families, such as lighting distribution boxes, power distribution boxes, etc.
2. Switchgear is a complete set of switchgear and control equipment. It is used as power center and main distribution device. It is mainly used for the control, monitoring, measurement and protection of power lines and main power equipment. Often set in substations, distribution rooms, etc.
Distribution box and switchgear in addition to the function, installation environment, internal structure, controlled objects, etc., the significant feature is that the size of the shape is different, distribution box volume is small, can be concealed in the wall, can stand on the ground; and switchgear volume is large, only the device in the substation, distribution room.
3. Control box is used inside and outside of various buildings, as power, lighting distribution and motor control, suitable for indoor wall, outdoor floor installation of power distribution equipment. It is mainly used for fire pump control, submersible pump control, fire fan control, fan control, lighting distribution control, etc. The control methods are direct start control, star delta buck start control, self-linked buck start control, inverter start control, soft start control, etc. Various control methods can also be used for isolation switch and fuse type switch as isolation breaking point.
4. Power distribution cabinet is assembled with switching equipment, measuring instruments, protection appliances and auxiliary equipment in enclosed or semi-enclosed metal cabinets or on the screen width according to the electrical wiring requirements, which constitutes a low-voltage power distribution device. Normal operation with the help of manual or automatic switch to turn on or break the circuit. There are many classifications of power distribution cabinet. Its fault or abnormal operation with the help of protection appliances to cut off the circuit or alarm. With the help of measuring instruments, it can display various parameters in operation, adjust certain electrical parameters, prompt or signal deviation from normal working condition. It is commonly used in various power generation, distribution and substations.
| Product Model | Name | Bottom Thickness (mm) | Installation Size (mm) | Appearance Size (mm) | |||||
| Single Row | GNB-N3113 | 13 Loops | 0.8 | 304×210×80 | 324×230×95 | ||||
| GNB-N3115 | 15 Loops | 0.8 | 340×210×80 | 360×230×95 | |||||
| GNB-N3118 | 18 Loops | 0.8 | 394×210×80 | 414×230×95 | |||||
| GNB-N3122 | 22 Loops | 0.8 | 466×210×80 | 486×230×95 | |||||
| Double Row | GNB-N3126 | 26 Loops | 1.0 | 304×440×80 | 324×460×95 | ||||
| GNB-N3130 | 30 Loops | 1.0 | 340×440×80 | 360×460×95 | |||||
| GNB-N3136 | 36 Loops | 1.0 | 394×440×80 | 414×460×95 | |||||
| GNB-N3144 | 44 Loops | 1.0 | 466×440×80 | 486×460×95 | |||||
Before the intelligent building project, accurate understanding of the basic concepts of weak electrical engineering, system integration and intelligent building, especially for the use of what means of system integration is necessary to do a good job of intelligent building.
With intelligent building characteristics of the project, in recent years, many building construction projects in the range of investment, the trend is growing year by year. But in these construction projects, some of them can not be called intelligent building engineering, at best, is only a simple system integration project with BA performance, and intelligent building is still far from. There are also construction projects proposed to do weak electrical system engineering, and system integration, intelligent building link. But how to contact? The builder can not get a practical and feasible technical planning program, by the integrator there to do the leading opinion. Some buildings have a large area and form a related building group, with a strong integrated function, should have intelligent building features of the project, but often can not afford to invest, just do a few relatively independent weak electrical engineering to cope. The lack of the composition of a complete integrated network management system, to the future scientific management of the building property and the waste of resources brings great regret. Some builders, after examining the relevant projects and listening to some hype of the integrator, feel that the intelligent building is very good and do not hesitate to invest in this area. However, after a period of use, it is felt that the project does not play a good benefit, on the contrary, sometimes it becomes a burden for managers. Problems such as these. Investors and users are confused. What is weak power engineering? What is system integration? What is an intelligent building? Is system integration an intelligent building? How to define the above project. How to grasp the right amount of investment in construction, and in the future use of the process to ensure that the weak electrical subsystems and intelligent management of the building to achieve the purpose of the original expected, both for the investor and the user is very important.
Intelligent engineering and weak electrical system engineering, has been in some major construction projects with the building structure, mechanical and electrical equipment installation, interior and exterior decoration works as equally important unit project. However, due to the late start of intelligent engineering relative to other traditional construction projects, it belongs to the sunrise industry. At the same time involving the construction, information, public security, fire, telecommunications, radio and television departments in the above-mentioned engineering interface content of mutual cross difficult to coordinate, so negligible engineering standardization of the comprehensive specific operation of the standard and other phenomena. In addition, in the field of design, because there is no basis for the design of the project fee and fee collection standards, but the intelligent technology content of such a project by the building electrical engineering design fee, so the rate is very low, coupled with many design institutes also lack of intelligent building system integration designers. Therefore, most of the domestic Class A building design institutes are generally not active in the design of intelligent building engineering. This absence of design is often replaced by the integrator. Integrators to obtain the contracting status of the project, often free design for the construction side, while the integrators regardless of design experience and coordination of professional drawings and drawings between the depth of vertical and horizontal quality can not be compared with the formal design institute, resulting in the general low quality of design drawings phenomenon. This practice of putting the cart before the horse is very much affecting the development of intelligent building engineering. So in the acceptance of the above project, it is not difficult to find in the acceptance process of the overall traditional construction projects, intelligent engineering and weak electrical engineering but has become a weak point in the acceptance, or even a blank point. This is obviously at a disadvantage in terms of contractual interest maintenance for the construction party. Especially for the future use of the aspects of a very bad impact. There are many reasons for this problem, but one thing is undeniable, that is, in the preliminary work of the project, there is no accurate positioning of the above-mentioned projects, whether the construction of several separate weak electrical engineering? Also when the construction of systems integration containing intelligent features of the project. Therefore, a more accurate understanding and clear understanding of the difference between the above-mentioned projects and the basic concept is very necessary.
A. Weak electrical engineering is the basic unit of various building construction projects, has become an indispensable construction sub-projects in various construction projects. Both the current residential community construction, its weak electrical engineering construction has also been greatly improved, for example, from the original cable TV, broadband network construction to the development of the community's closed-circuit television monitoring, building access control, three meters far copy and scientific property management, etc.. With the rise of green building, it is possible that the combination of household appliances integration and home information network switches, servers will form a real intelligent building residential community and show great humanization, science and environmental protection. And the weak electrical engineering associated with it is essential. Especially in some large public buildings, the types of weak electrical systems are more extensive. It can be said that when making investment in weak electricity engineering projects, according to their own needs, they can disregard system integration and projects with intelligent architectural features, but when carrying out the content of system integration and intelligent building engineering, they must have the physical form of each weak electronic system engineering, because weak electricity engineering provides technical products, which are provided to the building and normally play an embodied technical function. For example, in the construction of closed-circuit television monitoring project, eventually can be in the monitoring room and sub-control room in a timely manner to obtain the site of the monitoring images and alarm signals, and in the hard disk recorder has a certain video retention time records, which will achieve the practical purpose. Such project cost is small compared with the overall construction cost, and easy to build. As for whether another information platform for BMS integration, that is a different story. If it is only for the realization of a certain function, and considering the limit of investment and the maintenance level of property management staff, you can temporarily do not blindly do a large system integration. There are relatively independent weak electrical engineering in itself with the integration conditions can achieve the proper function. Both the building has a large centralized air conditioning, do not worry about whether there is no BMS integration system will have a negative impact on the normal use of air conditioning equipment and other building equipment, these are two different concepts.
Second, the system integration is not a specific technical product, but only a technical means. For example, in a building, if there are many weak electronic systems and large centralized air conditioning, large public area lighting projects, mechanical and electrical equipment, water supply and drainage and other construction projects, and the system between the building equipment management and maintenance and information sharing needs are increasingly obvious, which should be connected through a new technical means to these relatively independent weak electronic systems and air conditioning, mechanical and electrical, lighting and other systems This will fundamentally change the traditional management model and realize the modular management of the system, which must involve many different manufacturers, different equipment components, and different software configurations, in order to make these products and technologies to achieve unity and coordination, that is, mutual matching, interconnection and interoperability, so as to achieve the integrated system of comprehensive and efficient management and system-related automation and information data collection and processing functions. In order to make these products achieve unified and coordinated technology, i.e., match each other, achieve interconnection and interoperability, so as to achieve comprehensive and efficient management of the integrated system, as well as the automation of the system and the collection and processing of information and data. This is obviously more complicated than doing several separate weak electrical projects. Because system integration requires related network technology, database technology, middleware technology base and other conditions, whether it can achieve the information sharing between each heterogeneous system is related to the success or failure of system integration.
BA, BMS and IBMS are the main system integration modes adopted in different types of buildings in recent years, which are also the integration means adopted according to the functions of buildings and the needs of users.
1, BA is a more common chiller, ventilation, power distribution, elevators and other equipment as the main mode of integration, usually referred to as "building automation" is mostly for the BA of this integration method. Of course, the comprehensive security project (SA) and fire engineering (FA) which is also relatively independent of the system integration, if the 3A integrated together through the information network platform, usually called BAS can also be called BMS integration. These two technical means of the way is basically the same, whether BA, or SA, FA which are relatively closed system, they are mostly developed by the manufacturers of the company's special network bus, does not have openness, so the system integration capacity is limited, and maintenance, upgrade costs are also very high, so that the BA as a platform for system integration is not the real sense of intelligent buildings. At present, such system integration is also very common in most construction projects. 2, BMS is mainly BA as the core through the second level of the information network platform and through information communication, protocol conversion and control module will be the subsystem operation data through the building's internal LAN in the form of a browser on the central monitoring computer to achieve the monitoring and management of the entire building operations, due to the necessary database and applications it can provide a complete operating interface, so that it can achieve the The system integration of mechanical and electrical equipment, security equipment, fire equipment, etc. to implement a unified monitoring and control, (commonly known as 3A) this model is relatively simple to achieve, the cost is low, the system can be well linked, is currently the system integration of the application of a more integrated mode. It has significant advantages in terms of safety, economy, reliability and interconnectivity, and it has a positive role in strengthening the unified property management report statistics, energy management, statistical decision-making, coordination of different professional management work information interchange between the subsystems. But there are shortcomings, if the building automatic control system failure downtime, BMS system is also paralyzed, losing the ability to work normally, and can not manage and monitor the rest of the subsystems still working normally, so the daily maintenance of building equipment management is very important.
2, IBMS is based on BAS further with the communication network system, information network system to achieve a higher level of building integrated management system. If BMS is built on the basis of 3A integration, then IBMS is another higher level of system integration built on top of 5A integration. (commonly known as integrated building) This type of integration generally consists of three parts: an integrated monitoring platform with Web functions, a monitoring server and a protocol conversion gateway. And it is also a powerful development platform can be established relatively fixed and more complex application system, can be integrated with the enterprise's resource planning system ERP application system to complete the integration of management and control work. IBMS is more prominent in the management of the function, that is, how the comprehensive realization of optimal control and management, energy saving, energy efficiency, comfort, environmental security such a purpose, so to speak To judge whether a building has the characteristics of an intelligent building, it depends on whether it has the system integration of IBMS. This is a very important condition for determination. Another important premise is that while doing this project well, do not neglect the simultaneous construction of information technology projects. A successful IBMS system integration will be able to play a significant economic advantage in many management aspects, which of course has a lot to do with the high quality of technology of the users.
After understanding the basic concept of system integration, it is not difficult to understand the intelligent building. Because the establishment of intelligent building model itself is to be realized through the means of system integration, through the optimization of multiple objectives; multi-disciplinary synthesis, multi-factor relevance, and ultimately to provide a high degree of shared information resources, improve efficiency, ensure the safety of building use, save management costs to achieve short-term investment, long-term benefits of such a comprehensive goal. The condition of intelligent building is based on system integration, but it cannot be completely equated with system integration, and there are still differences between them. As reflecting the comprehensive and extensive scientific characteristics of its intelligent building. There are many key work must be done carefully, for example, first of all, the function of the building and management mode to systematically analyze, to carry out a lot of investigation and demand analysis work, and sometimes also in the original integrated software based on the need to highlight the focus on property management, and then the secondary development of software, through a lot of careful work will eventually mature software applications and orderly realization of the subsystems of centralized monitoring It is also important to control and manage the subsystems. It should be said that the benefits of a good intelligent building is self-evident. But the construction side is easy to ignore the above-mentioned must do a lot of work, always like to copy the same type of project as well as by the views of the integrator sway.
Undeniably, in recent years, many large and medium-sized intelligent building projects, more or less also took some detours, often in the weak electrical engineering and intelligent construction, the lack of in-depth planning and demonstration work, not only wasted investment, but also make the system does not work as it should, and finally become a failure of the "look" project. Therefore, there is no shortage of cases of system integration and intelligent building failure.
In the current vigorously advocate green building, advocate saving society under such an environment, the different levels of future intelligent building construction content will be very natural to implement in the building construction projects, and thus will dilute the hype of intelligent building. And gradually towards rational investment and more tend to standardize the above project.
What does the Miniature Circuit Breaker do?
If you are planning to install a new electrical system, Miniature Circuit Breakers should be your first choice. How does the MCB work? What is the function of the Double Pole AC MCB Miniature Circuit Breaker?
l What is the definition of MCB?
l What does the Miniature Circuit Breaker do?
l What are the advantages of Mini-circuit breakers?
What is the definition of MCB?
MCB is an electromagnetic switching device made of insulating material. Like a typical plug-in Miniature Circuit Breaker, the Miniature Circuit Breaker can be opened and closed manually. Miniature Circuit Breakers are small trip switches that provide overcurrent protection. This overcurrent is an electrical fault caused by a short circuit and overload. MCBs are primarily used to protect appliances in residential, commercial and industrial electrical systems. Unlike fuses found mainly in older houses, mini Miniature Circuit Breakers have many advanced features. One of them is the highly reusable functionality of your electrical system in the event of a devastating electrical failure.
What does the Miniature Circuit Breaker do?
1. Magnetic function: In the case of short circuit, the flow current rating can rise to about 10 to 100 times the average current. When this happens, a strong magnetic field is created. Because the magnetic field is strong enough, it can be sensed by magnetic elements, which will immediately trip the Miniature Circuit Breaker. In addition, dangerous arcing may occur during short circuits. This arc is very harmful because it can escape into the air. In such cases, components within the MCB called arc ducts or arc suppression chambers are used to prevent such dangerous leaks. Arc channels are made of parallel plates that absorb dangerous arc and kill it, so they don't damage anything outside the circuit.
2. Thermal function: Overloads are caused by large amounts of electricity used in a single circuit. A common example of circuit overload is an excessive number of devices powered by and connected to extension cords. When the circuit is overloaded, the overcurrent rating is 2 to 5 times the normal operating current. This overcurrent is not as high as a short circuit, which is why magnetic elements cannot detect it. In other words, the failure can still cause damage. During circuit overload, the bimetallic plate in the MCB senses a sudden heat increase and causes the Miniature Circuit Breaker to trip.
What are the advantages of Mini-circuit breakers?
1. There are different types of MCBS that can be used for a variety of purposes. The most common type is the general purpose MCB, which is used in lighting applications and appliances, such as fans, compressors and pumps. Other types include motor circuit protection, overload protection, and leakage protection (ELC).
2. The MCB can be mounted on a DIN rail or screwed directly onto the panel. It also comes in different sizes and shapes for easy integration into existing systems and installations.
3. Mini-circuit breakers can be installed immediately after the installation of other electrical components without any modification.
4. The MCB is available in a variety of configurations, including unipolar, bipolar, and multipolar versions with low pressure (LV) and high pressure (HV) ratings. These products can be used in many applications, such as heating, ventilation, air conditioning systems, etc.
If you are looking for a supplier of high quality Double Pole AC MCB Miniature Circuit Breaker at a reasonable price, the Singi Electrical is a very good choice.
| Product Model | Name | Bottom Thickness (mm) | Installation Size (mm) | Appearance Size (mm) | |||||
| Single Row | GNB-N5012 | 12 Loops | 1.0 | 286×220×90 | 306×250×105 | ||||
| GNB-N5016 | 16 Loops | 1.0 | 358×220×90 | 378×250×105 | |||||
| GNB-N5020 | 20 Loops | 1.0 | 430×220×90 | 450×250×105 | |||||
| Double Row | GNB-N5030 | 30 Loops | 1.0 | 340×400×90 | 370×430×105 | ||||
Singi Electrical, founded in 1995, is a high-tech enterprise which specializing in manufacturing and marketing of low-voltage circuit breakers...
