Customized Light Box

The distribution box is a circuit distribution box for all users. The distribution box is a switchgear, measuring instrument, protective appliance and auxiliary equipment assembled in a closed or semi-closed metal cabinet or screen according to the electrical wiring requirements to form a low-voltage power distribution device. During normal operation, the circuit can be switched on or off with the help of manual or automatic switches. In the event of malfunction or abnormal operation, the protection circuit is used to cut off the circuit or give an alarm. Various measuring parameters can be displayed by the measuring instrument, and some electrical parameters can be adjusted to indicate or signal the deviation from the normal working state. Commonly used in various hair, distribution and substations. Power distribution boxes, power distribution cabinets, power distribution boards, power distribution screens, etc., are complete sets of equipment that centrally install switches, comprehensive power distribution box wiring instructions, and instruments. There are two types of commonly used distribution boxes: wooden and metal. Because metal protection boxes have a higher protection level, they are more often used in metal. The purpose of the distribution box: reasonable distribution of electrical energy to facilitate the opening and closing operations of the circuit. It has a high level of safety protection and can directly show the conduction state of the circuit. It is easy to manage and facilitates maintenance when a circuit failure occurs. Classified by structural characteristics and uses:(1) Fixed panel switch cabinet, often called switch board or power distribution screen. It is an open-type switchgear with a panel cover. It has a protective effect on the front, and can still touch the live parts on the back and sides. The protection level is low. Substation centralized power supply.(2) Protective (ie closed) switchgear refers to a type of low-voltage switchgear that is closed on all sides except the installation surface. The electrical components such as the switch, protection, monitoring and control of this cabinet are installed in a closed enclosure made of steel or insulation material, and can be installed on or off the wall. There can be no isolation measures between each circuit in the cabinet, and a grounded metal plate or insulation plate can also be used for isolation. Usually the door is mechanically interlocked with the main switch operation. In addition, there is a protective table-type switchgear (that is, a console), and the panel is equipped with control, measurement, signal and other electrical appliances. Protective switchgear is mainly used as a power distribution device at the process site.(3) Drawer type switch cabinet. This type of switch cabinet is made of steel with a closed enclosure, and the electrical components of the incoming and outgoing line circuits are installed in a drawer that can be drawn out to form a functional unit that can complete a certain type of power supply task. The functional unit and the bus or cable are separated by a grounded metal plate or a functional board made of plastic to form three areas of the bus, functional unit and cable. There are also isolation measures between each functional unit. Drawer-type switch cabinets have higher reliability, safety and interchangeability, and are relatively advanced switch cabinets. Most of the currently produced switch cabinets are drawer-type switch cabinets. They are suitable for industrial and mining enterprises and high-rise buildings that require high reliability of power supply, as a centralized control power distribution center.(4) Power and lighting distribution control box. Most are enclosed vertical installations. Due to different application occasions, the enclosure protection levels are also different. They are mainly used as power distribution devices on the production site of industrial and mining enterprises. Fault improvement1. Failure cause1) Failure caused by the influence of ambient temperature on low-voltage electrical appliancesThe low-voltage electrical appliances in the distribution box are composed of fuses, AC contactors, residual current action protectors, capacitors, and meters. These low-voltage electrical appliances are designed and manufactured in accordance with GB1497 "Basic Standards for Low-Voltage Electrical Apparatus", and their normal working conditions are specified accordingly: the upper limit of the ambient air temperature does not exceed 40 ° C; the average value of the ambient air temperature for 24h does not exceed 35 ° C ; The lower limit of the ambient air temperature is not lower than -5 ° C or -25 ° C.The distribution box reconstructed by the rural power grid operates outdoors. It not only generates high temperature when it is directly exposed to sunlight, but also generates heat during operation. Therefore, in the high summer season, the temperature inside the box will reach above 60 ° C. The temperature greatly exceeds the ambient temperature specified by these appliances, so failures due to overheating of electrical components in the distribution box can occur.2) Failure caused by product qualityDuring the reconstruction of the rural power grid at that time, due to the large number of distribution boxes required and the short construction period, the distribution box factory needed to supply the low-voltage electrical appliances in a short time and with a large number, which resulted in a strict demand for product quality, resulting Some products failed shortly after being put into operation. For example, some models of AC contactors cannot run because the contactor closing coil is burned out shortly after the distribution box is put into operation.3) Failure caused by improper selection of electrical appliances in the distribution boxDue to the improper selection of the capacity of the AC contactor at the time of manufacture, the AC contactors with the same capacity were installed for different outgoing circuits, and the imbalance of the three-phase load was not considered, and the current level of some of the outgoing contactors was not normal Based on the selection of the model, a higher current level is selected, which causes the AC contactor to burn out during high-temperature summer operation. 2. Improve the plan1) For the distribution box with a distribution transformer capacity of 100kV · A and above, the temperature control relay (JU-3 or JU-4 ultra-small temperature relay) should be considered at the side wall of the cooling window inside the box. The axial fan is installed on the box on the left side above the control electrical board, so that when the temperature inside the box reaches a certain value (such as 40 ° C), the exhaust fan can be automatically started to forcibly discharge heat to dissipate the box.2) The protection circuit is used to prevent the external circuit failure of the power supply from the distribution box. Choose a smaller intelligent phase loss protector. For example, you can use DA88CM-II motor phase loss protection module (Shanghai product) to install in the distribution box to prevent the motor from being damaged due to low voltage phase loss operation.3) Improve the wiring method of the low-voltage capacitor bank of the original distribution box, and change its installation position from the pile head on the AC contactor to be connected between the low-voltage incoming line of the distribution box and the meter. To prevent inaccurate metering by the metering device due to phase failure or capacitor damage due to capacitor circuits during operation. In addition, the capacitor selection model should be BSMJ series products to ensure reliable component quality and safe operation.4) If a new distribution stand on the column is added, when making the distribution box shell, a 2 mm thick stainless steel plate can be selected, and the size of the distribution box is appropriately enlarged (JP4-100 / 3W used in agricultural reform projects Based on the model, the size of the original box width direction is increased by about 100 mm, that is, from 680 mm to 780 mm. The improved distribution box dimensions are: 1300 mm × 780 mm × 500 mm) in order to increase The electrical safety distance between the outlets of the shunts, the outlets and the casing of the box, which is conducive to the operation and maintenance of agricultural electricians and the replacement of fuses, and it can also dissipate heat.5) Select energy-saving AC contactor (similar to CJ20SI type), and pay attention to the AC contactor coil voltage is connected to the corresponding terminal of the selected residual current protective device, and pay attention to correct load matching. When selecting an AC contactor, select a product with an insulation level of A or higher. The rated current of the main circuit contact must be greater than or equal to the load current of the line being controlled. The contactor's solenoid coil has a rated voltage of 380V or 220 V, and the coil is allowed to be used within the range of 80% to 105% of the rated voltage.6) Selection of residual current action protector. Products that meet the GB 6829 "General Requirements for Residual Current Operated Protectors" and are qualified by the China Electrotechnical Product Certification Commission must be selected. Can choose similar to LJM (J) series of power-saving type, and is a low-sensitivity delay type protector. The method of the protector device shall conform to the national GB13955-2005 "Installation and Operation of Residual Current Action Protection Device". The breaking time of the leakage protector, when the leakage current is the rated leakage current, its action time should not be greater than 0.2s.7) The low-voltage cables are used for the incoming and outgoing wires of the distribution box. The selection of the cables should meet the technical requirements. For example, the inlets of the distribution boxes of 30kVA and 50kVA transformers use VV22-35 × 4 cables, and the outlets of the branches use the same specifications of VLV22-35 × 4 cables; the inlets of the distribution boxes of 80kVA and 100kVA transformers use VV22-50. × 4, VV22-70 × 4 cables, and the outgoing cables are VLV22-50 × 4, VLV22-70 × 4 cables, and the cables are crimped with copper and aluminum wiring noses, and then bolted to the terminal heads in the distribution box. .8) Selection of fuse (RT, NT type). The rated current of the total overcurrent protection fuse on the low-voltage side of the distribution transformer should be greater than the rated current of the low-voltage side of the distribution transformer, which is generally 1.5 times the rated current. The rated current of the melt should be based on the overload multiple and the fuse allowed by the transformer. Device characteristics. The rated fuse current of the overcurrent protection fuse of the outgoing circuit should not be greater than the rated current of the total overcurrent protection fuse. The rated current of the fuse should be selected according to the normal maximum load current of the circuit and should avoid the normal peak current. The rated current of the shunt capacitor bank fuse can generally be selected according to 1.5 to 2.5 times the rated current of the capacitor.9) In order to analyze the reactive power of rural low-voltage power grids, install a DTS (X) series of active and reactive two-in-one multi-function energy meters (installed on the meter board side) in the box to replace the original Three single-phase watt-hour meters (DD862 series meters) installed to facilitate online monitoring of loads.Yishang has 23 years experience in manufacturing all kinds of metal boxes and metal cabinets, including distribution box, control cabinet, network cabinet, server rack and so on. If you have project of distribution boxes, Yishang is the preferried supplier in China. Welcome to contact our email vivi@zsyishang.com if you need our help!

A server, also called a server, is a device that provides computing services. Because the server needs to respond to service requests and process them, in general, the server should have the ability to undertake services and guarantee services.The composition of the server includes the processor, hard disk, memory, system bus, etc., and is similar to the general computer architecture, but because it needs to provide highly reliable services, it is Management requirements are high.In the network environment, according to the different types of services provided by the server, it is divided into file server, database server, application server, WEB server and so on.A server is a computer that manages resources and provides services to users. It is usually divided into a file server, a database server, and an application server. A computer or computer system running the above software is also called a server. Compared with ordinary PCs, servers require higher stability, security, and performance. Therefore, hardware such as CPU, chipset, memory, disk system, and network are different from ordinary PCs.Main featureYou can measure whether the server has achieved its design purpose from these aspects; R: Reliability; A: Availability; S: Scalability; U: Usability; M: Manageability, that is, the server RASUM metrics.1.ScalabilityThe server [2] must have a certain "scalability", because the enterprise network cannot be permanent, especially in the current information age. If the server does not have a certain scalability, when the number of users is not enough, a server worth tens of thousands or even hundreds of thousands will be eliminated in a short time, which is unbearable for any enterprise. In order to maintain scalability, it is usually necessary to have a certain amount of expandable space and redundancy on the server (such as disk array bays, PCI and memory slot slots, etc.).Scalability is embodied in whether the hard disk is expandable, whether the CPU can be upgraded or expanded, and whether the system supports a variety of optional mainstream operating systems such as Windows NT, Linux, or UNIX. Only in this way can the initial investment be fully utilized in the later period.2. Ease of useThe function of the server is much more complicated than that of a PC, not only its hardware configuration, but also its software system configuration. For a server to achieve so many functions, it is impossible to imagine without comprehensive software support. However, a large number of software systems may cause a decline in the performance of the server, and managers cannot effectively operate it. Therefore, when designing a server, many server vendors must fully consider the availability and stability of the server, as well as the ease of use of the server.The ease of use of the server is mainly reflected in whether the server is easy to operate, whether the user navigation system is perfect, whether the chassis design is user-friendly, whether there are key recovery functions, whether there is an operating system backup, and whether there is sufficient training support.3.AvailabilityFor a server, a very important aspect is its "availability", that is, the selected server can meet the requirements of long-term stable work, and cannot often cause problems. In fact, it is equivalent to the reliability proposed by Sun.Because the server is facing the entire network of users, rather than a single user, in large and medium-sized enterprises, the server is usually required to be uninterrupted. In some special application areas, even if there is no user to use, some servers have to work uninterrupted, because it must continuously provide users with connection services, regardless of whether they are at work or off work, whether it is workdays, rest, holidays . This is the fundamental reason why the server must be extremely stable.In general, specialized servers work continuously 24x7, especially like some large web servers, such as those used by large companies, web servers, and iqdeWEB servers that provide public services. For these servers, maybe the number of times that they are really working and booting is only once, that is, the time when they just bought back the full installation and configuration and put it into official use. After that, it worked uninterrupted until it was completely scrapped. If something goes wrong at every turn, the network is unlikely to stay up and running. In order to ensure that the server has a high "availability", in addition to requiring the quality of each component to pass.In addition, necessary technical and configuration measures can be taken, such as hardware redundancy, online diagnosis, and so on.4.Easy to manageAmong the main features of the server, there is another important feature, which is the "easy management" of the server. Although we say that the server needs to work continuously without interruption, no matter how good the product is, it may fail. Take a sentence that people often say is: noI do n’t know if it may be bad, but I do n’t know when it ’s bad. Although the server has sufficient guarantees in terms of stability, it should also have necessary measures to avoid errors, detect problems in a timely manner, and can also maintain it in time if it fails. This not only reduces the number of serversThe chance of errors can also greatly improve the efficiency of server maintenance. In fact, it is the serviceability (Serviceability) proposed by Sun.It is impossible for a large server to stop and repair like a computer you usually use. In this way, it is likely to cause the entire network to be paralyzed, and the loss can not be measured by money. In order to solve this problem, server manufacturers have provided many new technologies, such as redundancy technology, system backup, online diagnostic technology, fault alarm technology, memory error correction technology, hot-plug technology, and remote diagnostic technology. Most failures can be repaired in a timely manner without downtime.The easy management of the server is also reflected in whether the server has an intelligent management system, whether it has an automatic alarm function, whether it has a management system independent of the system, and whether it has an LCD monitor. Only in this way can administrators easily manage and work efficiently.At present, according to the architecture, servers are mainly divided into two categories:Non-x86 serverNon-x86 servers: Includes mainframe, minicomputer, and UNIX servers. These are servers that use RISC (Reduced Instruction Set) or EPIC (Parallel Instruction Code) processors, and mainly use UNIX and other specialized operating systems. There are POWER and PowerPC processors from IBM, SPARC processors and EPIC processors developed by Sun and Fujitsu, mainly Intel Itanium processors. This kind of server is expensive, the system is closed, but it has good stability and strong performance. It is mainly used in the core systems of large enterprises such as finance and telecommunications.x86 serverx86 server: also known as CISC (Complex Instruction Set) architecture server, which is usually referred to as a PC server. It is a server based on the PC architecture that uses Intel or other processor chips compatible with the x86 instruction set and the Windows operating system. Cheap price, good compatibility, poor stability, unsafe, mainly used in small and medium enterprises and non-critical business.Dividing by application level is also commonly referred to as "dividing by server level" or "by network scale". It is the most common method of dividing servers. It is mainly based on the level of server application in the network (or server grade). Divided. It should be noted that the server grade referred to here is not divided according to the server CPU frequency, but is based on the comprehensive performance of the entire server, especially some of the server-specific technologies used. According to this division method, servers can be divided into: entry-level servers, workgroup-level servers, department-level servers, enterprise-level servers, and video servers.1.Entry-level serverThis type of server is the most basic type of server and the lowest-level server. With the increasing improvement of PC technology, many entry-level servers are now configured similarly to PCs, so some people currently think that entry-level servers are equivalent to "PC servers". This type of server contains not many server features, and usually only has the following features:1) There are some basic hardware redundancy, such as hard disks, power supplies, fans, etc., but they are not required;2) SCSI hard disks are usually used, and now there are SATA serial interfaces;3) Some components support hot swap, such as hard disk and memory, etc. These are not necessary;4) usually only one CPU, but not absolute;5) Memory capacity supports up to 16GB.This type of server mainly uses Windows or NetWare network operating system, which can fully meet the needs of office-type small and medium-sized network users for file sharing, data processing, Internet access and simple database applications. This server is very similar to a general PC. Many small companies simply use a high-performance brand PC as the server, so this server is the same as a high-performance PC brand in terms of performance and price. Almost the same.Entry-level servers have a relatively limited number of terminals (usually around 20), and they have poor stability, scalability, and fault-tolerant redundancy. They are only suitable for data exchange without large databases and small daily network traffic. A small business with a long, uninterrupted connection. However, it should be noted that there are currently relatively large server developments and manufacturers. There are several levels of enterprise-level servers that we will talk about later. The lowest-level enterprise-level server is called "entry level." "Enterprise server", the entry level mentioned here does not have the same meaning as the "entry level" mentioned above, but this division is still relatively small. Another point is that this kind of server generally uses Intel's dedicated server CPU chip, which is based on the Intel architecture (commonly known as "IA structure"). Of course, this is not a rigid standard, but because the server's application level requires and Price restrictions.2.Workgroup serverThe workgroup server is a server one level higher than the entry-level server, but still belongs to the low-end server category. It can also be seen from this name that it can only connect as many users as one working group (about 50), the network size is small, and the server stability is not as high as the application environment of the enterprise server we will talk about below. Of course, other performance requirements are correspondingly lower. The workgroup server has the following main features:1) Usually only supports single or dual CPU application servers (but not absolute, especially SUN's workgroup servers have workgroup servers that can support up to 4 processors, of course, the price of this type of server is also A little different)2) SM bus that supports large-capacity ECC memory and enhanced server management functions3) Comprehensive functions, strong manageability, and easy to maintain4) Using Intel server CPU and Windows / NetWare network operating system, but some are using UNIX series operating system5) can meet the needs of small and medium network users in data processing, file sharing, Internet access and simple database applications.Compared with entry-level servers, workgroup servers have improved performance, enhanced functions, and some scalability, but fault tolerance and redundancy performance are still not perfect, and they cannot meet the application of large database systems, but the price is higher than the former. A lot more expensive, generally equivalent to the total price of 2 to 3 high-performance PC brand machines.3. Department-level serverThis type of server belongs to the mid-range server category, and generally supports symmetric processor structures with more than two CPUs, and has relatively complete hardware configurations, such as disk arrays and storage bays. The biggest feature of department-level servers is that in addition to all the server characteristics of the workgroup server, it also integrates a large number of monitoring and management circuits. It has comprehensive server management capabilities and can monitor status parameters such as temperature, voltage, fans, and chassis. Standard server management software enables managers to keep abreast of server working conditions. At the same time, most department-level servers have excellent system scalability, which can meet the needs of users to upgrade the system online in time when the business volume is rapidly increasing, which fully protects the user's investment. It is a necessary link for various basic-level data collection units in the enterprise network to maintain smooth communication with the highest-level data center. It is generally the first choice for medium-sized enterprises and can also be used in finance, post and telecommunications industries.Department-level servers generally use CPU chips developed by IBM, SUN, and HP. These chips are generally RISC structures, and the operating systems used are generally UNIX series operating systems. Now Linux is also widely used in department-level servers.The departmental server can connect about 100 computer users and is suitable for small and medium-sized enterprise networks with higher processing speed and system reliability. Its hardware configuration is relatively high and its reliability is higher than that of the workgroup server. Of course, its The price is also high (usually the sum of about 5 high-performance PCs). Because this type of server requires more components to be installed, the chassis is usually larger, and it is rack-mounted.4.Enterprise serverEnterprise servers belong to the ranks of high-end servers. Because of this, there are not many enterprises that can produce such servers, but also because there is no industry standard hardware to specify what level of enterprise servers need to reach, so now I have seen many companies that do not have development Companies that produce enterprise-level servers claim to have enterprise-level servers. At the very least, enterprise-class servers use a symmetric processor structure with more than 4 CPUs, some of which are up to dozens.In addition, it also has an independent dual PCI channel and memory expansion board design. It has high memory bandwidth, large-capacity hot-swap hard disks and hot-swap power supplies, strong data processing capabilities, and cluster performance. The chassis of this enterprise-class server is even larger, generally cabinet-type, and some also consist of several cabinets, like mainframes. In addition to all the server features of departmental servers, the biggest feature of enterprise server products is that it also has high fault tolerance, excellent expansion performance, fault pre-alarm function, online diagnostics, and hot swap performance of RAM, PCI, CPU, etc. . Some enterprise servers also introduce many of the finer features of mainframe computers. The chips used in this type of server are also unique CPU chips developed by several major server developers and developed by the manufacturers themselves. The operating systems used are also generally UNIX (Solaris) or LINUX.Enterprise servers are suitable for financial, securities, transportation, post and telecommunications, communications, or large enterprises that need to process large amounts of data, high processing speed, and high reliability requirements. Enterprise servers are used in large networks with hundreds or more networked computers that require high processing speed and data security. Enterprise-class servers have the highest hardware configuration and the highest system reliability.Rack serverThe appearance of the rack server does not look like a computer, but like a switch, there are 1U (1U = 1.75 inches = 4.45CM), 2U, 4U and other specifications. The rack server is installed in a standard 19-inch cabinet. This structure is mostly a functional server.For information service companies (such as ISP / ICP / ISV / IDC), when selecting a server, physical parameters such as the volume, power consumption, and heat generation of the server must be considered first, because information service companies usually use large dedicated computer rooms to uniformly deploy and manage large numbers Server room, the computer room is usually equipped with strict security measures, good cooling system, multiple backup power supply system, the cost of the computer room is quite expensive. How to deploy more servers in a limited space is directly related to the service cost of an enterprise. Generally, a rack server with a mechanical size that conforms to the 19-inch industry standard is used. There are also many specifications of rack-mounted servers, such as 1U (4.45cm high), 2U, 4U, 6U, 8U, and so on. 1U rack servers are usually the most space-saving, but the performance and scalability are poor, which is suitable for some relatively fixed fields of business. Products above 4U have higher performance and good scalability, and generally support more than 4 high-performance processors and a large number of standard hot-swappable components. Management is also very convenient. Vendors usually provide corresponding management and monitoring tools, which are suitable for key applications with a large number of visits, but they are relatively large and space utilization is not high.Blade serverThe so-called blade server (to be precise, it should be called a blade server) refers to that a plurality of card-type server units can be inserted in a standard height rack cabinet to achieve high availability and high density. Each "blade" is actually a system board. They can start their own operating system through "on-board" hard disks, such as Windows NT / 2000, Linux, etc., similar to individual servers. In this mode, each motherboard runs its own system and serves the specified Different user groups are not related to each other. However, administrators can use system software to group these motherboards into a server cluster. In the cluster mode, all motherboards can be connected to provide a high-speed network environment, and simultaneously share resources to serve the same user group. Inserting new "blades" into the cluster can improve overall performance. And because each "blade" is hot-swappable, the system can be easily replaced and maintenance time is minimized.Sever cabinetIn some high-end enterprise servers, due to the complicated internal structure and many internal devices, some also have many different equipment units or several servers are placed in one cabinet. This type of server is a cabinet server.For securities, banks, post and telecommunications and other important enterprises, a system with complete fault self-repair capabilities should be adopted, and key components should be redundantly adopted. For servers used for critical services, dual-machine hot backup high availability systems or high Performance computer, such system availability can be well guaranteed.Server protectionBasic protection.Basic protection is only a simple four words, but there are a lot of things to pay attention to, such as the conversion of disk partition format on the server (such as NTFS format), the first time for anti-virus software (including servers and workstations) Update settings, restrict the time period for employees' computers to access the network, arrange for employees to set their own passwords for individual items on the personal computer, and more.Comprehensive protection. Windows servers, Linux servers, Exchange Servers, Lotus Domino, Windows workstations, and Linux workstations cannot all fall down. They must provide all-round protection, and a gap may cause the entire corporate network to collapse.Backup protection. Under normal circumstances, many network administrators can back up network server data every day, and the protection of this data can be divided into two types: physical protection and technical protection. Physical protection means that storage records are best placed in a device with certain security barriers to prevent accidental disasters. Technical protection is protected by a password. If the backup program supports encryption, this data should be encrypted. Of course, some network administrators will find too many passwords difficult to remember, and can choose some auxiliary software and tools to help.Remote access protection. A server offering Free Remote Access (RAS) is no different to a hacker than a tourist attraction with a "welcome" sign. In view of this, the administrator can take two measures of protection. If the remote user connects to the host from a fixed place, the callback function can be used to allow the remote user to disconnect after logging in. Another approach is to restrict all remote users to a single server. The user's access is then restricted to one server, not the entire network. This way, even if there is a hack, it will be isolated on a single machine.Step out of regular protection. Don't stick to the rules in network deployment. If you use the methods and deployment methods that all novices and newcomers are accustomed to, the chance of being successfully attacked by hackers is naturally much greater. For example, RAS is the most commonly used TCP / IP protocol, but in fact IPX / SP protocol can also be used. If network administrators choose this unconventional protocol, it can indeed increase the difficulty for hackers to invade corporate data.Yishang has 23 years experience in manufacturing and customizing metal server rack and server cabinet. Welcome to contact our email vivi@zsyishang.com if you need our help. 

Equipment cabinets are generally made of cold-rolled steel or alloy to store computers and related control equipment. They can provide protection for storage equipment, shield electromagnetic interference, and arrange the equipment in an orderly and neat manner to facilitate future maintenance of the equipment. Equipment cabinets are generally divided into server equipment cabinets, network equipment cabinets, console equipment cabinets, and so on.UsageMany people think of a cabinet as a Equipment cabinet for IT equipment. Equipment cabinets are equipment cabinets, but not only that. For the computer itself, the equipment cabinet also plays an important auxiliary role with UPS power. A good Equipment cabinet means that the computer can run in a good environment. Therefore, the role of the equipment cabinet is equally important. The equipment cabinet systematically solves the problems of high-density heat dissipation, a large number of cable attachment and management, large-capacity power distribution, and full compatibility with rack equipment from different manufacturers in computer applications, so that the data center can operate in a highly stable environment .Various types of equipment equipment cabinets can be seen in all major computer rooms. With the continuous breakthrough of the computer industry, the functions embodied by the  equipment cabinets are also getting larger and larger. Equipment cabinets are generally used in network wiring room, floor wiring room, central computer room, data room, control center, monitoring room, monitoring center, etc.Basic StructureCommon equipment cabinet colors are white, black, and gray. (Among them there are many types, such as orange patterns, fine sand patterns, etc.). Equipment cabinets are divided according to material, there are aluminum profiles equipment cabinets, cold-rolled steel equipment cabinets, hot-rolled steel equipment cabinets; according to processing technology, there are 10% discount profiles equipment cabinets and 16-fold equipment cabinets.The type of plate, coating material, and processing technology determine the stability of the equipment cabinet. Generally it has a length specification of 600,800mm, a width specification of 600,800,1000mm, and a height specification of 42U, 36U, 24U. Most of the equipment cabinets used in the early days were made of cast or angle steel through screws, rivets, or welded into the equipment cabinet frame, plus a cover plate (door) made of thin steel plates. This kind of equipment cabinet is large, bulky, and simple in appearance, and has been eliminated. With the use of transistors and integrated circuits and the miniaturization of various components, the structure of the equipment cabinet has also developed toward miniaturization and building blocks. The equipment cabinet has developed from the past whole panel structure to a box and insert structure with a certain size series. There are two types of assembling and arrangement methods of box and plug-in unit: horizontal arrangement and vertical arrangement. Equipment cabinet materials generally use thin steel plates, steel profiles with various cross-sectional shapes, aluminum profiles, and various engineering plastics. In addition to welding and screwing the frame of the equipment cabinet, a bonding process is also used.Equipment cabinets can be divided into two basic structures: profiles and sheets according to the load-bearing components, materials and manufacturing processes.1) Profile structure Equipment cabinet: There are two types of steel profile equipment cabinet and aluminum profile equipment cabinet. Steel-shaped steel equipment cabinets are made of shaped seamless steel pipes as columns. This kind of equipment cabinet has good rigidity and strength, suitable for heavy equipment. The aluminum profile equipment cabinet composed of aluminum alloy profile has certain rigidity and strength, and is suitable for general or light equipment. This kind of equipment cabinet is light in weight, has a small amount of processing, and has a beautiful appearance, which is widely used.2) Thin-plate structure equipment cabinet: a full-plate equipment cabinet, whose side plate is formed by bending a whole steel plate. This kind of equipment cabinet has good rigidity and strength, and is suitable for heavy or general equipment. However, the side panels are not removable, which makes assembly and maintenance inconvenient. The structure of the curved plate column equipment cabinet is similar to that of the profile equipment cabinet, and the column is bent from steel plates. This kind of equipment cabinet has certain rigidity and strength, and is suitable for general equipment.The equipment cabinet is also equipped with equipment cabinet accessories as required. Its main accessories include fixed or retractable guide rails, locking devices, hinges, cable trays, cable trays, and shielded comb springs.Skills Requirement(1) It should have good technical performance. The equipment cabinet should have anti-vibration, shock resistance, corrosion resistance, dust resistance, water resistance, radiation protection, etc., in order to ensure that the equipment works stably and reliably.(2) It shall have good usability and safety protection facilities to facilitate operation, installation and maintenance, and to ensure the safety of the operator.(3) It should be convenient for production, assembly, commissioning, packaging and transportation.(4) It should meet the requirements of standardization, standardization and serialization.(5) Beautiful appearance, applicable, and color coordination.ClassificationWith the development of computer and network technology, the equipment cabinet is becoming an important part of it. IT facilities such as servers and network communication equipment in data centers are moving toward miniaturization, networking, and racking. The equipment cabinet is gradually becoming one of the protagonists in this change. Common equipment cabinets can be divided into the following types:By function: fireproof and antimagnetic equipment cabinet, power equipment cabinet, monitoring equipment cabinet, shielding Equipment cabinet, safety Equipment cabinet, waterproof equipment cabinet, safe, multimedia console, file equipment cabinet, wall-mounted equipment cabinetAccording to the scope of application: outdoor equipment cabinets, indoor equipment cabinets, communication equipment cabinets, industrial safety equipment cabinets, low-voltage power distribution equipment cabinets, power equipment cabinets, server  equipment cabinetsExtended classification: console, computer case equipment cabinet, stainless steel equipment cabinet, monitoring console, tool equipment cabinet, standard equipment cabinet, network equipment cabinet Equipment Cabinet Plate Requirements1. Equipment cabinet plate: industry requirements, standard equipment cabinet plate should use high-quality cold-rolled steel plate, many equipment equipment cabinets on the market are not made of cold-rolled steel, but replaced by hot plate or even iron plate, easy to rust and deform, please identify carefully!Cold rolled steel sheet. Cold rolled steel sheet is a steel sheet produced by cold rolling, commonly known as cold sheet. Compared with hot-rolled steel, the thickness of cold-rolled steel is more accurate, and the surface is smooth and beautiful. At the same time, it has various superior properties, especially in terms of processability. High-quality cold-rolled steel sheet can ensure the long-term toughness and load-bearing performance of the equipment cabinet. Cold-rolled steel sheet is widely used in automobiles, refrigerators, washing machines and other household appliances, as well as industrial equipment and various building materials. Cold plate surface: The surface of cold rolled steel plate is smooth, beautiful, smooth and delicate, full of toughness and steel strength, highlighting the noble quality of the equipment cabinet!2.About sheet thickness: General requirements in the industry: standard equipment cabinet sheet thickness column 2.0MM, side panel and front and rear door 1.2MM (Industry's requirement for side panel is 1.0MM or more, because the side panel cannot bear the load, so the panel can be slightly Thinning to save energy), fixed tray 1.2MM. The columns of YISHANG METAL Equipment cabinet are all 2.0MM thick to ensure the load-bearing of the Equipment cabinet (the columns play the main load-bearing role).As a company with 23 years of rich experience in equipment cabinet production, YISHANG METAL would like to remind everyone that the industry requires that the thickness of the plate of the equipment cabinet must meet the standards. Failure to meet the standards will cause the equipment cabinet to deform, affecting the life and safety factor of the equipment cabinet. The equipment cabinet mainly protects the equipment, so safety performance is very important. Please be sure to ask the thickness of the plate when you buy it, and carefully identify it!

The control cabinet is to assemble the switchgear, measuring instrument, protective appliance and auxiliary equipment in the closed or semi-closed metal cabinet or on the screen according to the electrical wiring requirements. The arrangement should meet the requirements of the normal operation of the power system, which is convenient for maintenance and does not endanger the person. And the safety of the surrounding equipment. In normal operation, the circuit can be switched on or off with the aid of a manual or automatic switch. In the event of malfunction or abnormal operation, the circuit or alarm is cut off by means of a protective device. The measuring instrument can display various parameters during operation, and can also adjust some electrical parameters to prompt or signal the deviation from the normal working state. Commonly used in various hair, distribution, and substation.The control cabinet also includes many kinds of electrical control cabinets, frequency control cabinets, low voltage control cabinets, high voltage control cabinets, water pump control cabinets, power control cabinets, explosion control cabinets, elevator control cabinets, PLC control cabinets, fire control cabinets, brick machines. Control cabinets and more.PS frame type universal control cabinet process characteristics introduction1. The 25mm and 2.5mm thick mounting plates of the cabinet door are 20mm wide U-shaped flanges on both sides, which makes the mounting plate stronger and easier to handle.2. The three cables at the bottom of the box are imported into the cover plate, which can be replaced with each other, easy to move, easy to introduce cables, and easy to open the holes.3. There are grounding bolts on the door of the box. 5. The load-bearing hinges are easy to install, and it is easy to change the doors. The door can be opened 130°.4. The plastic sliding device can use the plastic sliding device to pass the guide rail, and the mounting plate can be pushed into the cabinet from the front of the cabinet. 7. The solid rectangular frame can not only strengthen the strength of the front door, but also can be used to fix and install electrical components. The door is installed with a horizontal bar).5. Tthe back plate can be easily installed, fixed with screws; can also be replaced with cabinet doors.6. Standard MS821 lock, lock the door at three points of upper, middle and lower.7. Sealing ring: Polyurethane foam sealing strip to ensure the degree of protection.8. Add a waterproof edge at the door frame to match the door seal to prevent water and dust from falling into the cabinet.9. (single door) left and right interchangeable door design, easy to use. Standard modular mounting holes for easy installation.10. Internal lights, easy to install and test (optional).11. File bags, convenient on-site work (optional).12. Install the beam and install it in the cabinet without using the mounting plate (optional).13. Fan and filter, to ensure ventilation inside the cabinet, protection grade IP54 (optional)14. Base, fixed, movable, easy to disassemble and install (optional).15. Double mounting plate, large installation capacity (optional).16. Door mounting bar, easy to install.17. The full frame side panel, front and rear doors, top and bottom panels of the cabinet can be removed, which can adapt to various requirements and facilitate installation and maintenance.Maintenance1. Disconnect the power supply and check that the rack of the control cabinet has a reliable grounding and that the grounding resistance is not more than 4Ω.2. The control cabinet has different voltages (DC 110V; AC single-phase 220V; three-phase AC), the circuit must be clearly identified during maintenance to prevent short-circuit accidents.3. All electrical switches on the control cabinet should be flexible and reliable, with no significant noise. There should be no looseness at the junction and the terminal of the connecting wire. The wire at the junction of the moving contact cable should be free of breakage.4. Use a soft brush or blower to remove the dust from the panel insert and all the electromagnetic switch parts, and check the status of the electrical switch contacts in the control cabinet, the contact conditions, the insulation of the coil appearance and the action of the mechanical components.5. When replacing the fuse, the fuse current should match the current of the loop.Basic roleThe control cabinet is mainly used for high-rise buildings without tower water supply, fire-fighting deep well pump constant pressure water supply, etc. According to the real-time water working conditions, the closed-loop adjustment of the pump speed is required. The well-known brand inverter, intelligent controller, pressure sensor and water pump are used to form a closed-loop control system. .Multi-pump control, stable pipe network pressure, improved water supply quality, reduced secondary pollution, high power saving efficiency, can achieve unattended automatic control system without tower water supply.YISHANG has 23 years experience in sheet metal fabrication including all kinds of sheet metal parts and sheet metal enclosures such as metal control cabinet, metal network cabinet, metal electrical cabinet, electronics box and so on. YISHANG will be your preferred choice for sheet metal fabrication in China! Welcome to browse our website https://www.ys-display.com/ or contact our email vivi@zsyishang.com.