Commonly used NMN Insulating material performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient. Insulating paper is mainly used for low-voltage motor in the slot, slot and interphase insulation, in addition to other than the transformer or other electrical insulation between the layers.
mica tape for cable in the electrical equipment, the potential can be separated from the charged part of the different. Insulation paper material has a high insulation resistance and pressure strength, and to avoid leakage, breakdown and other accidents. Secondly, NMN insulation paper material heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and process processing and other characteristics.

Insulation test method

With the nature of the relationship between the structure and properties of electrical insulating board, through a variety of analysis and testing methods, the microstructure and macroscopic structure linked. To study the characteristics of insulating materials, and its corresponding series of comprehensive properties.
With the rapid development of industry, the requirements of electrical equipment is getting higher and higher, to improve the motor stand-alone capacity, miniaturization of capacitors and high performance, are the development trend of electrical equipment. As the polyimide glass fiber directly determines the service life of electrical equipment and its advanced nature, therefore, in order to improve the development of insulating materials, opened up a new way, and the development of electrical insulation test technology, but also for the insulation technology research and application of the conditions The
Insulation materials on the test method according to the scope of application, is divided into general test methods, special test methods and application of test methods. In order to make the test results of insulating materials comparable to each other, no matter what the test method, require the technical requirements of the test method and operation of a unified, standardized, equipment, equipment, stereotypes. Any kind of test method should be easy to implement, and can be used in the required characteristics of the comparison.

anti static plastic sheet materials in many occasions, to withstand the role of a variety of mechanical stress, a constant, vibrating, thermal expansion and contraction cycle. These stresses can cause creep damage or fatigue damage.
DMD insulation paper material moisture will increase the conductivity, increase the loss. Water also dissolves many substances and accelerates the various chemical reactions that lead to aging. Acid, ozone, etc. can also lead to chemical aging. For some insulating paper materials, tree branches may occur at very low electric field due to the presence of moisture (see solid dielectric breakdown). In addition, in the hot zone, insulating paper materials will be subject to a variety of microbial damage, the so-called microbial aging.
In the outdoor use of phenolic paper sheet materials, often by direct sunlight, under the action of ultraviolet light will occur aging. In the nuclear reactor, X-ray devices used in the insulating paper material by radiation, will occur aging.

g10 fiberglass tube with excellent flexibility and flexibility, and good dielectric and chemical resistance, suitable for motors, electrical appliances, meters, radio and other equipment, wiring insulation and mechanical protection.
The conductor structure of the insulated tube has two kinds of cable type and guide rod type. Through the cable using the transformer cable directly through the casing, easy to install. When the working current is greater than 600 amps, wear cable structure is more difficult to install, the general use of pole structure.
epoxy fiberglass tube often oil or gas as insulating medium, generally made of transformer casing or circuit breaker casing, commonly used in the following 35 kV voltage level. Insulated tube conductor and porcelain sets of the cavity, filled with transformer oil, from the radial insulation. When the voltage exceeds 35 kV, set the conductor on the conductor or envelope cable to strengthen the insulation. Mainly used for ultra-high voltage transformers and circuit breakers.
The use of insulating pipe can also greatly reduce the corrosion of equipment and other accessories such as corrosion damage, but also to extend the working life of the equipment out of a force.

In simple terms DMD insulating paper is a layer of polyester film coated with adhesive, one side for the polyester fiber non-woven composite, calendering from a composite insulation products, generally referred to as DMD.
DMD insulation paper good performance are: high mechanical strength, good dielectric properties and high heat resistance, Y series motor is the stereotypes of insulation materials, in the small and medium-sized motor slot insulation, inter-turn and interlayer laminated mica sheet, Insulated heart and transformer insulation has been widely used.

High temperature insulation materials of the four patience

High temperature fire resistant cables tape in the automotive parts, semiconductor industry, aerospace industry, petrochemical industry, machinery industry, medical industry, electronic appliances, etc. are widely used, mainly because it has the following patience:
1, high temperature performance: glass transition temperature up to 143C, melting point of 343C, filled with GF or CF, the heat distortion temperature of up to 315C or more, long-term use temperature of 260C.
2, hydrolysis resistance: long-term high temperature steam and hot water immersion is still able to maintain good mechanical properties, all resin resistance to hydrolysis of better varieties.
3, chemical resistance: In addition to high concentrations of concentrated sulfuric acid and other strong oxidizing acid erosion, high temperature insulation material has similar to the resistance of PTFE resin, and in a variety of chemical reagents can completely retain its mechanical properties, Is a more excellent anti-corrosion materials.
4, resistance to radiation and weather resistance: insulation transformer pressboard on a variety of radiation has excellent resistance, can withstand γ radiation and maintain its various characteristics, can be applied to a variety of harsh environments.

DMD insulation cable paper is used as cable, coil and other electrical equipment, insulation materials. In addition to a good insulation properties and mechanical strength, but also have their own characteristics. In addition, we can observe the law, to determine the quality of insulating paper.
First of all, look at the description of DMD insulation paper, see insulation resistance, leakage current and other insulation characteristics of the parameters, because these parameters are used to determine the dielectric material insulation performance of the main parameters, when the insulating paper impurities and moisture content, The conductivity will increase, resulting in increased leakage current value.
DMD insulation paper products in a variety of transformers (including open ventilation dry, casting coil and liquid type), can have a variety of applications: wire winding, insulation, segment and box insulation, winding end Packing, partition and bar.
In open-air dry-type transformers, DMD insulation paper can greatly improve the design of such transformers, reduce electrical losses, improve standby capacity, increase safety and reliability, and reduce the amount of steel conductor and core, thus reducing size, cost.