Thermal resistance of super enamel wire

Product Name:Oil Immersed Transformer Winding Wire
Type: round or rectangular wire
Features: Telephone paper, cable wire or 500KV transformer turn-to-turn insulation paper is used for insulation. After dipping.
Conductor Material:Aluminum or Copper
Application:used for Oil Immersed Transformer, transformer coils
Certificate:UL,RoHS
Thermal Class:105¡æ

Insulating paint is composed of three parts of paint base (natural or synthetic resin, asphalt, drying oil, fiber paper and its composites, etc.), solvent or diluent, and auxiliary materials (drier, pigment, emulsifier, antifungal agent, etc.) . According to the purpose, it can be divided into three types: dipping paint, covering paint and adhesive paint.

High Temperature Aluminum Magnet Wire (Anodized aluminium wire) belongs to the special electromagnetic wire and the insulation layer is the aluminum oxide . Because of no thermal aging phenomenon, it can be used as insulation level of class 220.
The insulation layer of such product is thin, high temperature resistance and insulation performance stability,which is the best choice for low voltage winding wires with producing high temperature, poor environment, heat dissipation difficulty and so on.
It can widely be used in electromagnetic industries at home and abroad.

Good Quality Paper Covered Flat Aluminum Enameled Copper Wire is made of bare copper wire or bare aluminum wire, or paper-covered wire as the core, wrapped with paper for insulation. According to customer and national standards, the conductor is wrapped with telephone paper, electromagnetic paper, and high-density inter-turn insulation paper. As conductor insulation, it is an ideal material for civilian-made oil-immersed transformers; especially semi-hard insulated copper wires, which can significantly improve the winding resistance. The mechanical properties and short-circuit resistance can be widely used in the winding of large and medium-sized transformers.

Glass-fiber covered aluminum magnet wire used to have weak coating strength (abrasion resistance, shock resistance, and flexibility). However, that disadvantage has been significantly improved recently by refining material selection and manufacturing methods. The demand for glass-fiber covered aluminum magnet wire is increasing as the wires have excellent uniformity and electrical properties under high temperatures and humidity.

Kapton insulated aluminium wires are suitable for both HV and UHV applications at temperatures ranging from -269 to 200¡ãC with maximum bakeout temperature of 260¡ãC.
Kapton insulated aluminum wire is designed for use in high & ultra-high vacuum applications. Kapton has high mechanical strength, excellent electrical insulation properties, and low outgassing rates making it ideal for use as an in-vacuum insulator. These wires can be utilized in temperature ranges from 4K to 260¡ãC.

Application of enamel coated magnet wire
Wire for winding used in electrical equipment is generally called magnet wire. Simplyput,”enamel coated magnet wire is used for interchanging electrical energy with magnetic energy”.Magnet wires are broadly divided into enamelled wire (coating insulation), coveredconductor wire (fiber/film insulation), and combinations thereof.

Nomex covering corresponds to class H insulation is mainly used in the construction of condensers and capacitors. Main application of it is in shielding of cables in high temp. environments (200¡ãC) such as dry type transformers, military and aerospace cables. Nomex covered conductors are more effective in condition where temperature resistance and dielectric strength requirements are high.
Application of Nomex Paper Covered Aluminum wire :
Mobile Transformer,Traction Transfomers,Pole-mounted distribution transformers,Power substantions,rectifiers,oil-immersed transfomer coil winding.

For Aromatic polyimide tape-covered aluminum magnet wire, after the aluminum magnet wire is taped with a tape that is 1.5 mm thick with 1.0 mm of this thickness being polyimide film and the remaining 0.5 mm being fluoroplastic, it is heated and heat-sealed.

The wrapped wire is made of natural silk, polyester fiber, glass fiber, insulating paper or synthetic resin film, etc., tightly wrapped on the conductive wire core to form an insulating layer. There are also insulating layers wrapped around the enameled wire. In addition to thin-film insulation, others such as glass filaments need to be dipped in adhesive insulating varnish to improve their electrical, mechanical and moisture-proof properties. In fact, they are combined insulation.

1. Cutting
The enameled wire is composed of a conductor and an insulator, and the hardness of the two parts is very soft, so it can be cut by using a TabCUT-200 precision cutting machine with a general SiC cutting chip. Since the insulator is coated on the conductor, and its hardness and ductility are quite different, and the insulating layer has a certain degree of peeling, it is better to use some soft materials such as tin foil, rubber, etc. to wrap the cutting part when cutting. Up to prevent the insulation layer at the fracture from peeling off after cutting.

Enameled wire is a main type of winding wire. It consists of a conductor and an insulating layer. After the bare wire is softened by annealing, it is painted and baked many times. However, it is not easy to produce products that not only meet the requirements of the standard, but also meet the requirements of customers. It is affected by the quality of raw materials, process parameters, production equipment, environment and other factors. Therefore, the quality characteristics of various enameled wires are different, but they all have Mechanical properties, chemical properties, electrical properties, and thermal properties are four major properties.

The main advantage of the TIW wires is relatively high electric strength of the insulation, with breakdown voltage min. 6kV. Obtaining such a high resistance was possible by the use of a reinforced, three-layer conductor insulation. Third external insulation made of polyamide gives excellent flexibility and high mechanical resistance of the wire. Normally, TIW wires are produced in thermal class B. Fully automated manufacturing process provides a central position of conductor and the same thickness of insulation at any point of the wire.

The multi-shaped enamel wire refers to a metal wire for winding electromagnetic coils with an insulating paint, also known as electromagnetic wires. The multi-shaped enameled wire is the primary raw material of electrical, motor and household appliances, telecommunications, electronic external electromagnetic windings. In the future, follow the rapid development of industrial appliances, household appliances, telecommunications, electronic products, etc. Market and application fields.

The AWG tables are for a single, solid and round conductor. The AWG of a stranded wire is determined by the cross-sectional area of the equivalent solid conductor. Because there are also small gaps between the strands, a stranded wire will always have a slightly larger overall diameter than a solid wire with the same AWG.

Fiberglass Covered Insulated rectangular aluminum wire is in accordance with customer requirements in aluminum conductor uniform whole winding package 1-2 layers of alkali-free fiberglass, with the necessary temperature resistance index and compatible adhesive paint dipping and baking process, glass fiber and conductor between bonded into a whole.

LP Industry is one of leading flat magnet wire suppliers in China, mainly produces copper flat wire enameled and aluminum Enameled rectangular wire which is made of oxygen free copper or electrical aluminum rod, which are drawn or extruded by the specification mould. It is the baked winding wire with multiple-layers of insulating paint after annealing softening treatment. They are mainly used in the windings of electrical equipment such as transformer, reactor and etc.

The samples for tensile and thermal shock testing were 3 pieces of 254mm enameled wire.

First pull the enameled wire to the required elongation at a rate of 3.7-4.6 m/sec, then wrap the jerked sample around the mandrel, and then put the wrapped sample into the oven at the specified temperature for 30 minutes. It needs to be suspended in the oven. After leaving the oven, inspect the baked samples for cracking or peeling of the paint film. In this test, the diameter of the mandrel is usually 3 times the diameter of the enameled wire.

The specified temperature of the oven is set according to the temperature specified for the enameled wire of this ANSI Type in the NEMA MW1000 standard, which is usually the temperature grade of the enameled wire +20¡ãC.

The voltage resistance performance of enameled wire is mainly affected by several factors:
1. The thickness of the insulating layer, not much nonsense;
2. The degree of aging of the insulating layer and the degree of baking affect the withstand voltage.
3. The quality of the insulation layer is mainly the pinhole performance.

Product Introduction :
Nomex covering corresponds to class H insulation is mainly used in the construction of condensers and capacitors. Main application of it is in shielding of cables in high temp. environments (200¡ãC) such as dry type transformers, military and aerospace cables. Nomex covered conductors are more effective in condition where temperature resistance and dielectric strength requirements are high.

By extrusion of bare aluminum wire wrapped and Nomex Paper covered wire, the mechanical performance and electrical performance better, instead of making difficult composite enameled flat wire, suitable for transformer, winding of lifting electromagnet, electric welding machine and other products.

Enameled Aluminum Wire connects Enameled Copper Wire with the short service life according to the test. The contact part of the enameled copper wire and the enameled aluminum wire will accelerate the oxidation of the aluminum wire.

Main Applications:
All kinds of household electric motors, vacuum cleaner motor, electric motor
All kinds of transformers, inductors, rectifiers
All kinds of fan motor
All kinds of high frequency electric appliance

Certification: SGS,UL
Size: 0.2mm-8.0mm
Delivery time: 10-30days
Thermal Class: 130-220C
Conductor Material: Copper Clad Aluminum

Insulation, also called insulating coatings, is a kind of coating with excellent electrical insulation. It has good electrochemical properties, thermal properties, mechanical properties and chemical properties, mostly varnishes, but also colored paints. Insulating paint is a special paint in the paint category. Insulating varnish is an important insulating material based on high molecular polymers that can be cured into an insulating film or insulation under certain conditions. Insulating paint is composed of base material, flame retardant, curing agent, pigment and filler, and solvent. It introduces its composition, usage classification, grade classification, requirements, development trend, etc. in detail.

After the product is manufactured, whether its appearance, size and performance meet the requirements of the technical standards of the product and the technical agreement of the user must be judged by the inspection beam and measured; the test shall be compared with the technical standard of the product or the technical agreement of the user and meet the requirements If it is qualified, otherwise, it is unqualified. Passing the inspection can reflect the stability of the enameled wire product quality, the material and the rationality of the process. Therefore, the quality inspection has the function of checking, preventing and identifying.

Copper Clad Aluminum Enameled Wire is one of magnet wire, used for electric equipment. ECCA is popular enameled wire, maybe instead of the copper enameled wire and aluminum magnet wire in some field.

ENAMELED ROUND ALUMINUM WINDING WIRES are widely used for Oil-immersed transformer windings, Dry-type transformer, High temperature transformer, Motor, transformer, generator, welding machine; Sealed motor, Power tools motor, Auto alternators motor, Magnet coil, High power motor, household electro motors and micro-motors;

Heat resistance refers to the properties of a substance that can maintain its excellent physical and mechanical properties under heated conditions. The highest use temperature of commonly used materials to characterize. There are different standards and test methods for different materials. Such as plastics are generally expressed by Martin heat-resistant temperature. The coating industry uses a blast constant temperature oven or a high temperature furnace. After it reaches the specified temperature and time, the surface condition of the paint film is inspected, tested, or other properties such as impact, bending, water immersion, salt spray test, etc., and then before and after Test data representation. All coatings used in higher temperature occasions must use heat resistance as an important technical indicator of the coating film

The glass in Glass Fibre Conductor may be applied in woven tape form or as a continuous fibre. It has proved to be an efficient insulation providing coil winders with thermal stability, adequate electrical properties and good resistance to abrasion after varnishing. The glass is bonded with a varnish to improve dielectric strength and mechanical properties.

Enameled Rectangular Wire is one type of magnet wire, normally used for transformer, motors, generators, and gradually instead of round magnet wire.
Enameled Rectangular Copper Wire: A> 0.8–8mm, B> 1-22mm
Enameled Rectangular Aluminum Wire: A> 0.8–8mm, B> 2-22mm