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Dibasic Ester(DBE)

CAS NO: 95481-62-2

The picture of DBE effect: surfactant

Steel coil coating can help maintain the balance of volatilization speed, avoid the defects caused by the film explosion, and over-baking caused by too fast evaporation speed. It can give the film flat appearance, improved toughness and post-processing, and rising hiding power of pigments.

Dibasic ester (DBE solvent) has a special volatility in the paint industry. With the increase of temperatures, its volatilization rate is faster than other solvents, which is, the first half of the volatilization rate is slow and the latter half of the volatilization is fast, which is more conducive to drying.

Container / canned paint can effectively replace the canned and container coatings of isophorone, propylene glycol ether, ethylene glycol ether acetate solvents. The high solubility and low volatility rates can make the coating has a good leveling , DBE solvent can improve the flexibility, adhesion and other important properties of coating.

Automotive coating can be used for a variety of different automotive coatings and different resin systems. It can be used in middle and topcoats to achieve the desired gloss on the surface of the paint film, increasing the fullness of the paint film, adding a small amount of wetting to the formulation, and improving the leveling and relevelling properties.

Enameled wire coating is polyvinyl butyral, polyvinyl formal, polyurethane, polyester, and polyester amide coatings. Solvents made of excellent formulations can completely replace cresol in polyester and polyester amide systems. When these DBE solvents are used, high-solidity and low-twist resins will be produced, bringing a non-corrosive advantage that greatly reduces the user's difficulty in storage.

Due to the long wood paint range and large buffering zone, customers have greater flexibility and selectivity in the solvent formulation and construction conditions, which can help adjust the volatilization rate, improve leveling, prevent white fog, pinholes, and other surface defects.

In the ink industry, replace the high-boiling solvent with high toxicity and a strong odor.

In the resin industry, it has a low viscosity. On the one hand, the viscosity of the resin can be reduced without reducing the molecular weight or the solids content; On the other hand, the solid content can be increased while maintaining the same viscosity. With this feature, high-solidity and low-viscosity resins can be produced.

DBE chemical can be used as an polymer and chemicals intermediate and  can be used as organic synthesis intermediate. Its polymerization produces a wide variety of polyesters and other polymers and it is also a raw material for the production of pharmaceuticals, pesticides, initiators and a series of other chemical products.

 DBE solvent has a very ideal application in cleaning agents, paint strippers, and industrial cleaning.

 

WELCOME TO VISIT HENAN PROSPER CHEM CO., LTD.

Company profile

HENAN PROSPER CHEMICALS CO., LTD was established in 2000. HENAN PROSPER CHEMICALS CO., LTD is the professional and comprehensive producer and distributor of chemical products in China, Since then, through diversification and expansion, we developed one plant that annual outputs of 60,000 tons of Sulphonated products. We as an approved distributor for Sinopec, HENAN PROSPER CHEMICALS CO., LTD. has grown to become a market leader in the fields of Detergent, Petrochemicals, and Industrial Chemicals.

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Diacetone Alcohol(DAA)

CAS: 123-42-2

Uses of Diacetone Alcohol (DAA)

DAA is used as a raw material for high boiling point solvents, paint diluents, wood stains, rust removers, and dyes, etc.

DAA is used as a dye raw material and resin solution.

It can be used as a solvent for cellulose acetate and cellulose ester, and celluloid. It can be applied in biochemical researches, electrophoretic analysis and wood preservatives.

Diacetone Alcohol Boiling Point

DAA has the chemical properties of ketones and tertiary alcohols. It will be decomposed when mixed with alkalis or heated to more than 130 ℃, which produces 2 molecules of acetone.

 

It can be used as a high boiling point organic solvent. It has low viscosity, on which low temperatures have little effect, and is used in cellulose ester paints.

 

DAA can be used for printing inks and as a solvent and paint stripper for synthetic resin coatings. It can also be used in insecticides, fungicides, wood preservatives, solvents for colorants, and extracting agents for oils and aromatics. It is used as a component in the manufacture of photographic films, rayon, artificial leather, antifreeze, brake oil.

 

DAA is non-corrosive to gold shavings and can be packaged in iron, mild steel and aluminum containers. It should be stored in a well-ventilated, dry warehouse, away from fire and heat sources.

 

WELCOME TO VISIT HENAN PROSPER CHEM CO., LTD.

Company profile

HENAN PROSPER CHEMICALS CO., LTD was established in 2000. HENAN PROSPER CHEMICALS CO., LTD is the professional and comprehensive producer and distributor of chemical products in China, Since then, through diversification and expansion, we developed one plant that annual outputs of 60,000 tons of Sulphonated products. We as an approved distributor for Sinopec, HENAN PROSPER CHEMICALS CO., LTD. has grown to become a market leader in the fields of Detergent, Petrochemicals, and Industrial Chemicals.

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Dicyclohexylamine(DCHA)

USE of DCHA Chemical

DCHA Chemical can be used as the vulcanization accelerator of rubber; and also used as the raw material of synthetic fibers, dyes, and gaseous-phase corrosion inhibitor.

It can be used for the manufacture of dyes, softener VS and drugs such as Antiradon, thio-TEPA and solaziquone; it can also be used in medicine, pesticides.

Cyclohexylamine is the intermediate of herbicides "Hexazinone" as well as the intermediate of rubber accelerators, oil additives, and corrosion inhibitors.

 

DCHA Chemical can be used for the preparation of cyclohexanol, cyclohexanone, caprolactam, cellulose acetate and nylon 6 and the like. Cyclohexylamine itself is a solvent and can be used in resins, paints, fat, and paraffin oils. It can also be used for making desulfurization agent, rubber antioxidant, vulcanization accelerator, chemical auxiliaries of plastics and textile, the treatment agent of boiler feed water, metal corrosion inhibitors, emulsifiers, preservatives, anti-static agents, latex coagulants, oil additives , fungicides, pesticides and dye intermediates. The sulfonate salt of cyclohexylamine can be used as artificial sweeteners for being applied to foods, beverages and pharmaceuticals.

 

It can be used in organic synthesis, plastic synthesis, also used as a preservative and acid gas absorbent.

It can be used for the production of water treatment chemicals, artificial sweeteners, and the intermediate of rubber processing chemicals and agrochemicals.

It can be used as acidic gas absorbent for organic synthesis.

 

CAS number: 101-83-7

Dicyclohexylamine(DCHA) is a colorless transparent oily liquid with strong alkaline properties and an irritating ammonia. It is flammable and highly toxic. It is slightly soluble in water and miscible with organic solvents.

 

  1. DCHA is used for organic synthesis, also as insecticide, acid gas absorbent and steel rust inhibitor. It is used as a natural product, organic synthetic extracting agent, and acid gas absorbent. Salts formed by the reaction of DCHA and fatty acids and sulfuric acids have excellent surface activity and are used in the printing and textile industries. Complexes by the reaction of DCHA and metals are used as catalysts for paints and inks. Dicyclohexylamine nitrite is an excellent metal corrosion inhibitor. DCHA is also used for organic synthesis and used as a pesticide, an acid gas absorbent, and a steel rust inhibitor.

 

  1. Properties of DCHA Chemical

 

DCHA Chemical is a colorless transparent oily liquid with strong alkaline properties and an irritating ammonia. It is flammable and highly toxic. It is slightly soluble in water and miscible with organic solvents.

 

Storage Precautions DCHA should be stored in a cool and ventilated warehouse. It should be kept away from fire and heat sources. The temperature should not exceed 30°C. The container should be sealed and DCHA Chemical should be separated from oxidants, acids, etc. and never be mixed.  An appropriate variety and quantity of fire equipment should be installed. In storage areas, spill emergency equipment and suitable containment materials should be well-prepared.

 

DCHA Chemical should be sealed with iron drums and should be stored in a cool, ventilated, dry place away from sources of fire. Loading, unloading, and transportation shall be arranged in accordance with regulations of flammable toxic chemicals. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

 

WELCOME TO VISIT HENAN PROSPER CHEM CO., LTD.

Company profile

HENAN PROSPER CHEMICALS CO., LTD was established in 2000. HENAN PROSPER CHEMICALS CO., LTD is the professional and comprehensive producer and distributor of chemical products in China, Since then, through diversification and expansion, we developed one plant that annual outputs of 60,000 tons of Sulphonated products. We as an approved distributor for Sinopec, HENAN PROSPER CHEMICALS CO., LTD. has grown to become a market leader in the fields of Detergent, Petrochemicals, and Industrial Chemicals.

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If you want wholesale brochure printing,you can find us,we can provide brochure printing wholesale and paper box printing.Guangzhou Extra Link Printing & Packaging Co.,Ltd. is a packaging companies in china.

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Fiber-To-The-Home (FTTH) is a transmission method of optical fiber communication. It is to connect the optical fiber directly to the user's home (where the user needs it).

 

This kind of optical fiber communication mode and strategy is also different from FTTN, FTTC, HFC (hybrid fiber coaxial), etc. They all need to rely on traditional metal wires, including twisted pair and coaxial cable, for the "last kilometer" information transmission. So we taking about the advantages and disadvantages of ftth.

 

The advantages of FTTH are as follows:

First, it is a passive network. From the office end to the user, it can basically be passive;

Second, its bandwidth is relatively wide, and the long-distance is just in line with the large-scale application mode of operators;

Third, because it is the service carried on the optical fiber, there is no much problem;

Fourth, because of its wide bandwidth, the protocols it supports could be more flexible;

Fifthly, with the development of technology, point-to-point, 1.25G and FTTH feature relatively perfect functions.

 

In the optical access family, there are FTTB (Fiber-To-The-Building), FTTC (Fiber-To-The- Curb), FTTSA (Fiber-To-The-Service Area) and so on.

 

Connecting the optical fiber directly to the user's home has no limitation on its bandwidth, wavelength and transmission technology. It is suitable for introducing various new services. It is the most ideal transparent service network and the final way of access network development.

 

Although the development speed of mobile communication is amazing, due to the limited bandwidth, the terminal volume which is unlikely to be too large, the limited display screen and other factors, people still pursue the fixed terminal with relatively superior performance. They want to achieve Fiber-To-The-Home. The charm of Fiber-To-The-Home lies in its huge bandwidth, which is the best solution to the "last mile" bottleneck from the internet backbone to the user's desktop.

 

With the upgrading of technology, the cost of ftth fiber to the home is greatly reduced, and will soon be equivalent to that of DSL and HFC networks, which makes the practicability of FTTH possible. In addition, FTTH technology is also applied to solve the "last mile" problem in the information superhighway. FTTH + Ethernet is much faster than ADSL and ISDN.

 

Disadvantages

Based on MAC speed limit mode, the delay time will increase when the broadband runs full.

In terms of speed, FTTH can provide up to 4M uplink and 100M downlink, which are unequal lines. While up and down lines of FTTB is equal and can provide up to 10M.

 

Predominance of broadband optical access network

In the global range, most telecommunication companies are ADSL-based development of broadband access. However, ADSL is a broadband access technology based on copper wire. Copper is a global strategic resource. With the continuous increase of international copper cable prices (an average annual increase of 20% - 30% in recent years), the line cost of ADSL is higher and higher. But, the raw material of optical fiber is silica which is inexhaustible.

 

In fact, the current market price of optical fiber is lower than that of common copper wire, and its service life is far longer than the latter. When old cables have to be replaced or new subscriber lines need to be laid, optical fiber is a more reasonable choice, especially in the backbone and even distribution line. Secondly, as active equipment, ADSL electromagnetic interference is hard to avoid and the maintenance cost is higher and higher. As a passive transmission medium, optical fiber can avoid these problems.

 

As the fiber-optic process of the whole network continues to extend to the user side, the restrictions of end-to-end broadband connection are more and more concentrated in the access section, and the uplink and downlink connection rate of ADSL cannot meet the long-term business needs of high-quality users. Although ADSL2 + and VDSL2 technologies are expected to alleviate this pressure, the continuous substantial increase of their speed and transmission distance is limited, and no essential breakthrough can be expected. Obviously, with the extensive application of optical fiber in the long-distance network, metropolitan area network and even backbone of access network, the logical development trend is to continually extend optical fiber to the distribution line and lead-in line of access network, and finally realize the Fiber-To-The-Home. The key question is: how fast is the promotion speed? It depends on many factors, including market demand, competition demand, application stimulation, technology progress, cost reduction and development of supporting operation and maintenance system.

UnitekFiber Solution is a group company which engaged in R&D, manufacturing and marketing of fiber optical products and accessories.Providing professional products and services of fiber Indoor/outdoor cables, Fiber cable management, high density datacom cabling, Fiber optical connectivity and PLC splitter and so on .Our products and solutions are widely applied in 4G/5G, Data Center and Cloud Computing industry etc.

 

With more than 10 years experience and development, UnitekFiber Solution become the industry-leading fiber optic accessories suppliers which supported the main domestic market in the South and a big occupation in overseas market.Our key value is offering the best quality and service to the customers around the world.

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Customized Advent Calendar Full Color Printing

Customized Advent Calendar Full Color Printing Product List

 

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advent calendar custom

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Accept Customization

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Customer's Logo

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Cmyk 4 Colors AndPantone Color

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157gsmC1S& Paper Tube

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Optional

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Iso9001:2008, Sgs, Fsc

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Guangzhou Extra Link Printing & Packaging Co.,Ltd. provides custom advent calendar printing and el packaging.

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Our campany provides accordion brochure printing and accordion fold brochure printing.

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Catalogue Printing Wholesale

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L12*W29 cm  Accept Customization

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Our business also includes wholesale flyer printing and cheap wholesale flyer printing.hot-selling-brochure-card-catalogue-printing-wholesale-flyer-printing-brochure-3_1587896306.jpg?profile=RESIZE_710xhot-selling-brochure-card-catalogue-printing-wholesale-flyer-printing-brochure-1.jpg?profile=RESIZE_710xhot-selling-brochure-card-catalogue-printing-wholesale-flyer-printing-brochure-2.jpg?profile=RESIZE_710x

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we use tear off pad printing technology and this calendar been personalized tear off calendar.custom-logo-desk-pad-paper-monthly-tear-off-calendar-printing3.jpg?profile=RESIZE_710xcustom-logo-desk-pad-paper-monthly-tear-off-calendar-printing1.jpg?profile=RESIZE_710xcustom-logo-desk-pad-paper-monthly-tear-off-calendar-printing2.jpg?profile=RESIZE_710x

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Guangzhou Extra Link Printing & Packaging Co.,Ltd. provides bulk catalog printing.

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Guangzhou Extra Link Printing & Packaging Co.,Ltd. provides paper box printing,logo sticker printing , china paper box and china paper gift box.

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Custom Design Logo Softcover Matte Paper Magazine Printing Product List

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White

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This magazine uses matte magazine paper.

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Perpetual calendar printing

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Yellow

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Guangzhou Extra Link Printing & Packaging Co.,Ltd. personalised perpetual calendar and personalized 365 day calendar.

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What is the power transformer

The power transformer is an electromagnetic component. It is static electrical equipment that transforms alternating current and is widely used in almost all electronic products. It is used to change the power generated by the power station to high voltage and reduce the loss during transmission, so as to facilitate long-distance power transmission.

 

The function of the power transformer:

 

The functions of the power transformer can be divided into the following three main functions: voltage conversion, power transmission, and insulation isolation.

 

Principle of power transformer:

 

The principle of the transformer is the electromagnetic induction to transmit signals from one circuit to another circuit; the coil connected to the power supply, which receives AC power, called the primary winding; the coil connected to the load, which sends AC power, is called the secondary winding.

 

 

 

Structure of power transformer:

 

The structure of the transformer is composed of iron core and winding. The main magnetic circuit of the transformer is composed of an iron core, and the iron core is divided into two parts of the iron core column and the horizontal piece. The circuit part of the transformer is formed by winding the enameled original wire or double-wire insulated flat wire.

 

 

 

Classification of power transformers:

 

According to usage: power transformer; special transformer; instrument transformer; test transformer.

 

Divided by winding form: double winding transformer; three winding transformer; autotransformer.

 

According to the form of iron core: core transformer; bright transformer; amorphous alloy transformer.

 

Divided by the number of phases: single-phase power transformer; three-phase power transformer.

 

Divided by cooling method: dry-type power transformer; oil-immersed power transformer.

 

According to the size of the transmission power: 10KVA above is high power; 10KVA~0.5KVA is medium power; 0.5KVA~25VA is low power; 25VA below is micropower.

 

 

 

Purpose of power transformer:

 

The power transformer can be stepped up or stepped down. When implementing the long-distance transmission of power, the power transformer is used to increase the voltage to the point of use and then reduce the voltage to the required voltage amplitude. The iron core in the transformer can produce an alternating magnetic field.

 

 

 

As a cross-border B2B platform, ESGCC Global has many related products. Here are some examples:

 

 

500kV Power Transformer,120MVA-720MVA, Three-Phase, Double Windings Off-circuit Tap-changing Power Transformer

 

35kV Power Transformer/KEMA certificate/LEEEC

 

If you want to know more information, you can visit https://g.esgcc.com.cn/products/AC-Transformer.html

 

ESGCC Global, built by State Grid Electronic Commerce Co., Ltd., is the cross-border B2B digital trading platform for power industry. The platform has gathered nearly 80,000 electrical equipment manufacturers to provide over 170,000 cost-effective electrical equipment products with international quality selection, helping global users of power industry to achieve smart online procurement with one-stop trading service.

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Classification of electrical cables

  1. power cable

 

The power cable is used to transmit and distribute high-power electrical energy in the main line of the power system, including power cables of various voltage levels and insulations ranging from 1 to 330KV and above.

 

According to voltage levels, power cable can be divided into low-voltage cables, medium-voltage cables, and high-voltage cables. According to the insulation conditions, it is divided into plastic insulated cables, rubber insulated cables, mineral insulated cables, etc.

 

  1. Overhead insulated cable

 

Overhead cables are also very common, and their characteristic is that they have no sheath. Many people have three misunderstandings about this type of cable.

 

First, its conductor is not only aluminum but also copper conductors (JKYJ, JKV) and aluminum alloys (JKLHYJ). Now there is also steel core aluminum stranded overhead cable (JKLGY).

 

Second, it is not only single-core, the common ones are generally single-core, but it can also be stranded with several conductors.

 

Third, the voltage level of overhead cables is 35KV and below, not 1KV and 10KV.

 

  1. Control Cable

 

The structure of this type of cable is similar to that of a power cable. The feature is that it only has a copper core instead of an aluminum core cable. The conductor cross-section is small and the number of cores is large.

 

It is suitable for stand-alone control or unit equipment control of power stations, substations, mines, petrochemical enterprises, etc., with AC rated voltages of 450/750V and below.

 

  1. Special cables

 

Special cables are cables with special functions, including flame-retardant cables (ZR), low-smoke and halogen-free cables (WDZ), fire-resistant cables (NH), explosion-proof cables (FB), water-blocking cables (ZS), etc.

 

Flame-retardant cables (ZR), low-smoke halogen-free cables (WDZ): mainly suitable for important power and control systems. When the line encounters a fire, the cable can only burn limitedly under the action of the external flame, and there are few harmful gases (halogen) in the smoke.

 

When the external flame disappears, the cable can be extinguished by itself, so that minimize the fire damage to the human body and property. Therefore, this kind of cable is widely used in important places such as petrochemical, metallurgy, high-rise buildings, and densely populated places.

 

As a cross-border B2B platform, ESGCC Global has many related products.

 

Fire-Proof and Explosion-Proof Device For Cable Joint (Intelligent Type)

 

New Servo Cable

 

If you want to know more about electrical cables, you can visit https://g.esgcc.com.cn/products/Cable.html

 

ESGCC Global, built by State Grid Electronic Commerce Co., Ltd., is the cross-border B2B digital trading platform for power industry. The platform has gathered nearly 80,000 electrical equipment manufacturers to provide over 170,000 cost-effective electrical equipment products with international quality selection, helping global users of power industry to achieve smart online procurement with one-stop trading service.

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Wires and electrical cables are essential building materials for house decoration. In modern homes, wires and cables are the most common current conductors in the family. Many people are confused about the difference between wires and cables. Both are composed of wires, but their structures are different.

 

 

 

The first difference between wires and electrical cables

 

The first difference between wires and electrical cables is that wires can be used to transmit electrical energy. They can also be used as components and connecting wires for the manufacture of motors and electrical appliances. They are generally made of copper, aluminum, etc.; while electrical cables are mainly used for communication and electricity, so cables are also divided into communication cables, power cables, control cables, etc. Cables are generally not used for the manufacture of motors, but for large-span overhead lines.

 

The second difference between wires and electrical cables

 

The wire is a conductive metal wire used to carry current. It has a variety of forms such as solid, stranded, and foil. The size of the wire is small and the structure is simple; while the cable is composed of one or more mutually insulated conductive cores, which formed in the hermetic sheath. The size of the cable is larger and the structure is more complicated.

 

Apart from the differences, let’s take a look at the standards of wires and electrical cables. The production of wires and cables needs to meet national standards, otherwise, there will be safety hazards. The production standard of the wire is that it must reach the specified load voltage to ensure safety. In addition, the wire should also have good electrical conductivity, mechanical properties, and thermal properties. The material of the wire must also have corrosion resistance and weather resistance, so as to ensure the service life of the wire; the standards of cables and wires are similar, the main emphasis is on safety issues, which are related to the use of raw materials and the continuity of production standard. Besides, wires and cables have relevant standards for the use of raw materials and the continuity of production.

 

As a cross-border B2B platform, ESGCC Global has many related products.

 

Mid-voltage Power Cable

 

Copper conductor XLPE insulated PVC sheathed power cable VJV-8.7/10kv-1 * 120

 

 

High Voltage Power Cable

 

If you want to know more about electrical cables, you can visit https://g.esgcc.com.cn/products/Electric-Cable.html

 

ESGCC Global, built by State Grid Electronic Commerce Co., Ltd., is the cross-border B2B digital trading platform for power industry. The platform has gathered nearly 80,000 electrical equipment manufacturers to provide over 170,000 cost-effective electrical equipment products with international quality selection, helping global users of power industry to achieve smart online procurement with one-stop trading service.

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In today's wire and cable market, there are many products and production companies of different levels. However, many buyers simply regard price as the procurement standard, which breeds a market with many substandard products. So, what kind of cables are produced in accordance with national standards?

 

What is a national standard electrical cable?

 

The national standard electrical cable, literally understood, is the wire and cable produced in accordance with the national standard. Our country has clear regulations on the appearance, mechanical strength, insulation of the sheath, pressure resistance, wire resistance, and other aspects of the cable. Different cables have different national standards, mainly as follows:

 

Irradiation cross-linked power cable (0.6/1KV) executive standard: GB/T12706.1-2008

 

Medium voltage cross-linked cable (6/6KV-26/35KV) executive standard: GB/T12706.2-2008

 

High voltage cross-linked cable (64/110KV) executive standard: GB/T 11017-[/B]2002

 

Control cable (450/750V) executive standard: GB9330-88

 

Aluminum stranded wire and steel core aluminum stranded wire (0.6/1KV) executive standard: GB/T 1179-1999

 

 

How to identify the national standard electrical cable?

 

  1. Ensure that the certificate of conformity is standard; find out if there is a quality system certification; if there is a factory name, site, inspection stamp, and production date; and if there are trademarks, specifications, voltages, etc. printed on the wires. It also depends on the cross-section of the copper core of the wire. The high-quality copper is bright in color. Otherwise, it is inferior.

 

  1. You can take a wirehead and bend it repeatedly by hand. An excellent product has a soft hand feel, good fatigue resistance, and no cracks on the wire insulator.

 

  1. Wires of good quality are generally within the specified weight range. Wires of poor quality have insufficient weight, either the length is not enough, or the copper core of the wire has too much impurity.

 

  1. The copper core of the qualified copper core wire should be purple-red, shiny, and soft. The copper core of the shoddy copper core wire is purple-black, yellowish or white, with a lot of impurities, poor mechanical strength, and poor toughness. During the inspection, you only need to peel off the wire at one end and rub a piece of white paper on the copper core. If there is a black substance on the white paper, it means that there are many impurities in the copper core. In addition, the insulating layer of fake wires seems very thick, but in fact, most of them are made of recycled plastics. Over time, the insulating layer will age and cause leakage.

 

As a cross-border B2B platform, ESGCC Global has many electrical cables of good quality.

 

Low voltage cable

 

Copper core XLPE insulated PVC sheathed power cable yjv-0.6/1kv-1 * 120

 

Power Cable

 

YJV22 26/35kV 3× 400

 

If you want to know more about electrical cables, you can visit https://g.esgcc.com.cn/products/Electric-Cable.html

 

ESGCC Global, built by State Grid Electronic Commerce Co., Ltd., is the cross-border B2B digital trading platform for power industry. The platform has gathered nearly 80,000 electrical equipment manufacturers to provide over 170,000 cost-effective electrical equipment products with international quality selection, helping global users of power industry to achieve smart online procurement with one-stop trading service.

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Some knowledge of power transformers

  1. How does a power transformertransform voltage?

 

The transformer is made according to electromagnetic induction. It consists of an iron core stacked with silicon steel sheets (or silicon steel sheets) and two sets of coils wound on the iron core. The iron core and the coils are insulated from each other without any electrical connection.

 

It has been proved by the theory that the voltage ratio of the primary coil to the secondary coil of the transformer and the turns ratio of the primary coil to the secondary coil is related. There are fewer secondary coils than primary coils, which is a step-down transformer. Otherwise, it is a step-up transformer.

 

 

 

  1. What are the components of the power transformer components?

 

Transformer components are mainly composed of iron core and coil, in addition to the oil tank, oil pillow, insulating sleeve, and tap opening.

 

 

 

  1. What is the role of power transformer oil?

 

The functions of transformer oil are insulation and heat dissipation.

 

 

 

  1. How is the voltage regulator adjusted?

 

The structure of the voltage regulator is the same as the autotransformer, and the iron core is made into a ring coil and wound on the ring core.

 

The secondary coil tap uses a sliding brush contact to make the contact slide in a ring along the surface of the coil to achieve a smooth voltage regulation.

 

 

 

  1. What is the voltage change rate of the transformer?

 

The voltage change rate of the voltage regulator is one of the main performance indexes of the transformer. When the transformer supplies power to the load, the voltage at the load end of the transformer will inevitably drop. The ratio of the reduced voltage value to the rated voltage value is the rate of voltage change.

 

 

 

  1. How to ensure that the transformer has a rated voltage output?

 

Too high or too low voltage will affect the normal operation and service life of the transformer, so the voltage must be adjusted.

 

The method of voltage regulation is to draw several taps in the primary coil to connect to the tap opening. The tap opening changes the number of turns of the coil by rotating the contacts. As long as the position of the tap changer is turned, the required rated voltage value can be obtained. It should be noted that voltage regulation should usually be performed after the load connected to the transformer is cut off.

 

As a cross-border B2B platform, ESGCC Global has many related products.

 

 

35kV Power Transformer/KEMA cetificate/LEEEC

 

 

Oil-immersed Power Transformer/Power Transfomer/Electric Transformer/500kV

 

If you want to know more information, you can visit https://g.esgcc.com.cn/products/AC-Transformer.html

 

ESGCC Global, built by State Grid Electronic Commerce Co., Ltd., is the cross-border B2B digital trading platform for power industry. The platform has gathered nearly 80,000 electrical equipment manufacturers to provide over 170,000 cost-effective electrical equipment products with international quality selection, helping global users of power industry to achieve smart online procurement with one-stop trading service.

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Introduction to the structure of the transformer

The transformer is a functional component made by the principle of electromagnetic induction, which can transmit and change electrical energy or signal. It is mainly used to increase or decrease AC current and change impedance. Transformers are widely used. For example, they can transmit alternating current in power supply and distribution lines, electrical equipment and electronic equipment, and play the role of voltage transformation, current transformation, impedance transformation or isolation. There are many ways to classify transformers, and they can be divided into single-phase transformers and three-phase transformers according to the number of power supply phases.

 

The transformer is made by winding two or more sets of coils on the same coil frame or on the same iron core. Generally, the coil connected to the power source is called the primary winding, and the remaining coils are called the secondary windings.

 

 

 

  1. Single-phase transformer structure characteristics

 

A single-phase transformer is a transformer whose primary winding is a single-phase winding. The primary winding and the secondary winding of the single-phase transformer are wound on the iron core, the primary winding is the AC voltage input terminal, and the secondary winding is the AC voltage output terminal.

 

 

 

  1. Structure characteristics of the three-phase transformer

 

A three-phase transformer is a kind of transformer that is widely used in power equipment. The three-phase transformer is actually composed of three single-phase transformers with the same capacity. The primary winding (high-voltage coil) is three-phase, and the secondary winding (low-voltage coil) is also three-phase.

 

The internal structure of the three-phase transformer and the single-phase transformer are basically the same, both composed of the iron core (body) and the winding. The winding is the circuit of the transformer, the iron core is the magnetic circuit of the transformer, the two constitute the core of the transformer, namely the electromagnetic part. There are six sets of windings inside the three-phase power transmission transformer.

 

As a cross-border B2B platform, ESGCC Global has many related products. Here are some examples:

 

 

Oil-immersed Power Transformer/Power Transfomer/Electric Transformer/500kV

 

 

 

330 kV Power Transformer /Three Phase/LEEEC/KEMA cetificate

 

 

If you want to know more information, you can visit https://g.esgcc.com.cn/products/AC-Transformer.html

 

ESGCC Global, built by State Grid Electronic Commerce Co., Ltd., is the cross-border B2B digital trading platform for power industry. The platform has gathered nearly 80,000 electrical equipment manufacturers to provide over 170,000 cost-effective electrical equipment products with international quality selection, helping global users of power industry to achieve smart online procurement with one-stop trading service.

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