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Dear valued customers: Good day, As Labor Day holiday will coming , our office will be closed from 1st to 5th May. 2020. for a total of 5 days. Will recover work on 6th May.2020. Sorry for the inconvenience. Thanks & Best regards Fuzhou Singree Electric Co.,Ltd

Protect yourself and others around you by knowing the facts and taking appropriate precautions. Follow advice provided by your local public health agency. To prevent the spread of COVID-19: Clean your hands often. Use soap and water, or an alcohol-based hand rub. Maintain a safe distance from anyone who is coughing or sneezing. Don`t touch your eyes, nose or mouth. Cover your nose and mouth with your bent elbow or a tissue when you cough or sneeze. Stay home if you feel unwell. If you have a fever, a cough, and diffi

Dear valued customers: We would like to let you know,the goods are risk-free! First, the virus is mainly transmitted from person to person through contact and droplets. So far, there have been no cases of infection from objects. Second, WHO issued a special notice stating that packages and cargo were not at risk of infection. Not to mention cross-border trade. Third, our government has taken strong measures to prevent the spread of the virus, even extending holidays and suspending some industrial production. The area where our factory is located is not a major outbreak area. and none of our employees are sick. So please don't worry. Should you have any questions , please feel free to contact me. Warm regards Fuzhou Singree Electric Imp & Exp Co.,Ltd

Dear valued customers: We would like to take this opportunity to thank you for your kind support all this while. Please kindly be advised that our company will be closed from Jan 23th to Jan 30th,2020, to commemorate traditional Chinese festivals,Spring Festival . Any orders will be accepted but will not be processed until Jan 31th, 2020, the first business day after the Spring Festival. Sorry for any inconvenience caused. Thanks & Best regards

Dear valued customers: We would like to take this opportunity to thank you for your kind support all this while. The 2019 National Day holiday arrangement will be adjusted to Oct 1st to 7th, 2019, for a total of 7 days. Please kindly be advised . Any orders will be accepted but will not be processed until Oct 8th, 2019, the first business day after the National Day holiday. Sorry for any inconvenience caused. Thanks & Best regards Fuzhou Singree Electric Co.,Ltd

Dear valued customers: We would like to take this opportunity to thank you for your kind support all this while. The 2019 Mid-Autumn Festival holiday arrangement will be adjusted to Sep 13th to 15yh, 2019, for a total of 3 days. Please kindly be advised . Any orders will be accepted but will not be processed until Sep 16th, 2019, the first business day after the Mid-Autumn Festival holiday. Sorry for any inconvenience caused. Thanks & Best regards

Due to the high mechanical strength of the surface layer of the tempered glass insulator, cracks are less likely to occur on the surface. The electrical strength of the glass generally remains constant throughout the operation, and its aging process is much slower than that of porcelain. Therefore, the glass insulator is mainly scrapped due to self-damage, which occurs during the first year of operation, but the defects of the porcelain insulator are only in operation. It was only discovered after the year. The creepage distance, structure and material of the pin insulator are closely related to the flashover voltage. Under normal circumstances, the flashover voltage increases with the increase of the creepage distance. The structural shape of the insulator directly affects the antifouling performance of the insulator, and the reasonable structural design has a smooth surface, is not easy to form eddy currents, and has a small amount of accumulated dirt, thereby increasing the flashover voltage. The polymer organic composite material is used because of its large shape coefficient, large surface resistance and good water repellency, and good antifouling performance. Therefore, in the selection of insulators, the geometric creepage and structure must be reasonably selected according to the specific conditions, and new composite technology is used to actively promote the use of composite insulators. The glass insulator insulator is an insulator made of tempered glass. The surface is in a state of compressive prestressing. If cracks and electrical breakdown occur, the glass insulator

At present, China's ultra-high pressure and ultra-high voltage power grids have become a prominent symbol of rapid economic and social development. The sights of line towers, wire racks and wire nets are quite spectacular. However, what is not known is the achievement of power. Among the elements of the Great Wall, there is a small thing that is vital and often overlooked. It is an insulator. Without an insulator, there is no high-voltage power grid. As a porcelain bottle weighing more than ten kilograms to several tens of kilograms, the appearance of the insulator is really inconspicuous, but the technology it contains is extremely rich. As an important part of the substation and high-voltage transmission line infrastructure, the insulator bears three major tasks: insulation, support and mechanical connection. In ultra-high-voltage transmission lines, the voltage can exceed 1 million volts, and the transmission cable between the two towers exceeds 15 cm in diameter, which can generate more than 50 tons of tensile force. These high-voltage and strong tensile forces must first It is assumed by the insulator. Porcelain insulators need to pass through raw material inspection, batching, ball milling, sieving, iron removal, pulping, granulation, billeting, glazing, firing, magnetic inspection, cutting and grinding, etc. Aiming at the requirements of the use of UHV power grids in China, it is the core performance of insulator pro

Glass insulator insulator is made of tempered glass insulator. The surface is in a state of compressive prestressing. If cracks and electrical breakdown occur, the glass insulator will break into small pieces by itself, commonly known as "self-explosion." This feature eliminates the need for "zero value" detection of the glass insulator during operation. The main chain of silicone rubber is composed of a siloxane (Si-O) chain. Since the electronegativity of Si and O on such a bond is greatly different, the polarization structure formed has an ionic bond property. Thus, the bond energy of Si-O is higher than that of C-C bond. In addition, 1. Due to the nature of the ionic bond of the main chain, the ionic properties of the side chain methyl C-H are weakened and are not easily attacked by other molecules, so the chemical stability is good; 2. Since Si does not form double bonds and triple bonds, it is difficult to form a starting point of decomposition of the main chain (for this reason, the Si-C bond is relatively stable), which in turn leads to a more stable main chain of the silicone rubber. Based on the establishment of the above model. The researchers of CJCELE also established a finite element model for the ice-column insulators and an improved finite element model for the open-field problem of the insulators using KelV, n-transformation. These models have certain guiding significance for solving the electric field problem of i

With the accelerated pace of energy interconnection, the planning and construction of UHV is getting better and better. As an insulator that plays an important role in overhead transmission lines, the significance in the field of high-end power equipment manufacturing is self-evident. To this end, electrical manufacturing companies have promoted the development of the insulator industry from extensive manufacturing to intelligent manufacturing, and promoted the structural adjustment of the insulator manufacturing industry, from high energy consumption, labor-intensive, to low-energy, intelligent equipment. Glass insulator into the main force of UHV lines According to different production processes, insulator products currently used in the market include composite insulators, glass insulators, porcelain insulators, and the like. The glass insulator insulating member is composed of a glass fiber resin core rod (or a core tube) and a sheath of an organic material and an umbrella skirt. The utility model has the advantages of small size, light weight, high tensile strength, excellent anti-pollution and flashover performance. There are relatively many glass insulators applied on China's DC and AC UHV lines. Domestic enterprises have achieved independent innovation through years of technical reserves and experience accumulation, and glass insulator products have significant advantages. First, the strength is higher, second, the anti-pollution ability is stronger, and third, the self-explosion rate is low. This feature eliminates the need for [zero value" detection of the glass insulator during operation, ensuring safe operation of the grid.

Main functions and advantages of FXB-35/70CT composite insulators. Stain-resistant insulators mainly adopt measures to increase or increase the insulator shed or umbrella edge to increase the creepage distance of the insulator to improve the electrical strength of the insulator. At the same time, the shape of the shed structure is also changed to reduce the amount of natural dirt on the surface to improve the anti-smudge performance of the insulator. The creepage ratio of the stain-resistant insulator is generally 20% to 30% higher than that of the ordinary insulator, or even more. In areas where the power grid is frequently flashed, it is customary to use a double-layer umbrella structure with a stain-resistant insulator. This insulator has a strong self-cleaning capability and is easy to clean manually. According to our investigation of insulators used in overhead lines, pin insulators, butterfly insulators, suspension insulators, porcelain crossarms, rod insulators, LXY-70 glass insulators and tension insulators are commonly used. We produce complete specifications of insulators. In general, electrical faults of insulators are flashover and breakdown. Flashover occurs on the surface of the insulator, and burn marks are visible. The insulation performance is usually not lost. The breakdown occurs inside the LXY-70 glass insulator, and the ceramic body is discharged through the iron cap and the iron foot. The appearance may not be traced, but it has been lost. Insulation properties may also cause complete destruction of the insulator due to arcing. For breakdown, attention should be paid to checking the discharge marks and burns of the iron feet of the LXY-70 glass insulator. After a flashover occurs, the voltage between the electrodes drops rapidly to zero or close to zero. Sparks or arcs in the flashover channel cause localized overheating of the insulating surface to cause charring and dama

Mechanical properties: Glass insulators are often subjected to the forces of gravity and tension of the wires, wind, ice weight, glass insulator weight, wire vibration, equipment operating mechanical forces, short-circuit electric power, earthquakes and other mechanical forces during operation. The relevant national standards have strict requirements on mechanical performance. For the mechanical properties of glass insulators, it is necessary to ensure that the glass insulator can withstand the gravity and tension of the wires and withstand different resistances, so that the glass insulators have good use value in different uses. Pin insulators often encounter many problems in use, affecting the normal use performance and value of the pin insulators. Therefore, they are tested according to certain methods and methods during use, and often analyze the faults that occur. The causes and influencing factors of the failure of the pin insulator: Although other polymer materials also have the advantages described above, only silicone rubber does not cause too much pollution to the environment. The polyme

The main technical indicators of the insulator industry are: Mechanical strength and degradation rate. In terms of mechanical strength, the highest mechanical strength of the Class 3 insulators has reached the 550kN strength class. The mechanical margin of porcelain insulator and glass insulator of 240kN strength grade and below is generally 1.2-1.4, the mechanical margin of 300kN-420kN is generally 1.2-1.3, the mechanical margin of 550kN insulator is generally 1.1-1.2, and the strength grade of each strength grade Composite insulators have a mechanical margin of 1.4-1.5 or even higher. In terms of deterioration rate, the annual average degradation rate of porcelain insulators and glass insulators is generally 0.2% or more. At present, the annual average degradation rate of porcelain insulators and glass insulators of domestic mainstream manufacturers is about 0.01%-0.005%; The annual average degradation rate is about 0.03%, and it is decreasing year by year. With the continuous accumulation of industry operating experience and continuous improvement of manufacturing levels, the manufacturing technology of the domestic insulator industry has been at the international leading level. With the construction of China's unified joint power grid and the application of more ultra-high voltage and ultra-high voltage transmission lines, the market demand for technical performance such as reliability, pollution resistance and dispersion of electromechanical damage values of insulator products will become higher and higher.

According to different production processes, insulator products currently used in the market include composite insulators, glass insulators, porcelain insulators, and the like. The glass insulator insulating member is composed of a glass fiber resin core rod (or a core tube) and a sheath of an organic material and an umbrella skirt. The utility model has the advantages of small size, light weight, high tensile strength, excellent anti-pollution and flashover performance. According to industry insiders, there are nearly 200 line insulator manufacturing enterprises in China, and about 40 companies with a certain production scale. More than 100 countries in the world have used tempered glass insulators, more than 200 million pieces. Due to the accelerated construction of the power grid, compared with porcelain insulators, the development of domestic glass insulators is more rapid, and its market is in short supply, which continues to attract other companies to compete in this field. "At present, there are relatively many glass insulators applied on DC and AC UHV lines in China. Domestic enterprises have achieved independent innovation through years of technical reserves and experience accumulation. The advantages of glass insulator products are remarkable. First, the strength is higher, and the second is anti-pollution flash. The ability is stronger, and the third is the low self-explosion rate." The person in charge of an insulator manufacturing company said that this feature makes the glass insulators do not need [zero value" detection during operation to ensure safe operation of the grid.

High voltage insulator classification and use Insulators can be classified into high voltage insulators and low voltage insulators according to the voltage used. Insulators can be divided into porcelain insulators, glass insulators, and organic material (epoxy-resinated) insulators according to manufacturing materials. Insulators can be divided into indoor and outdoor insulators according to the location of their installations. Insulators can be divided into 11 sub-categories and 48 series according to their structures and applications. The main purpose of high-voltage insulators 1) High-voltage line insulators 1 High-voltage line rigid insulators: including pin-type porcelain insulators, porcelain cross-arm insulators and butterfly-type porcelain insulators. High-voltage circuit porcelain crossarm insulator can be divided into all-ceramic, rubber-mounted, single-armed and V-shaped according to the structure; according to the installation can be divided into vertical and horizontal two; by 50% full-wave impact flash The network voltage can be divided into 185kV, 2lOkV, 280kV, 380kV, 450kV, 6lOkV and other levels. For high-voltage overhead transmission and distribution lines, can replace the needle and suspension insulators, and save high pole porcelain dan. The high voltage line butterfly porcelain insulator is divided into 6kV, lOkV two levels according to the rated voltage. Used for overhead power transmi

The glass insulator salt spray test method generally indicates coastal pollution in nature, and can also indicate industrial pollution, such as the case of thin layer pollution and moisture. The droplet size and distribution of the mist should be similar to the typical droplets of nature. Characteristics of the salt spray method: (1) A film containing an aqueous solution of sodium chloride can be cast on the surface of the insulator during the test. (2) It is not necessary to apply a contaminated layer to the insulator separately and one by one. (3) The formation of the mist can be easily automated. The salt on the surface of the insulator can be continuously replenished or the uneven dry salt layer can be uniformly wetted during the test, so the test state is easy to control. (4) The equipment required for the test is simpler than other test methods, but requires a corrosion-resistant, effectively sealed room that does not allow salt spray to escape. (5) The test preparation time is short, and the test period is relatively long. (6) The results obtained in the laboratory are in good agreement with the results in the natural environment. The salt spray solution of the salt spray test method is prepared by using sodium chloride and tap water according to the required salinity, and the salt solution is atomized by a compressed air flow, a

Use of power fittings Use of power fittings Electric power fittings are metal parts used to connect transmission line towers, wires, lightning conductors and rims, or to protect wires, lightning conductors, and rims. basic requirements: Power fittings are generally made of cast steel and malleable cast iron. It is required that the line fittings have sufficient mechanical strength to have good electrical properties for a part of the fittings connecting the conductors. In the manufacturing process, the line fittings should be free of burrs, traps, traps, cracks, smooth surfaces, and the galvanized layer should be uniform. The matching fittings should be of suitable specifications, no missing parts, no rust, and the screws and nuts should be well matched. The contact surface between the hull plate and the wire should be smooth, and the manufacturing quality and size should conform to the national standard.