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60 years experience in insulation material production

Chinese electrical manufacturer

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ZTELEC is engaged in the production of insulating materials for 60 years

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Cooperation with many universities in China, technology innovation

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Product Category

Enamelled Wire

The enameled wire is a main type of winding wire. It consists of two parts: the conductor and the insulating layer. The bare wire is annealed and softened, and then baked and baked.

Electrical Materials

Diamond dotted paper, Epoxy fiberglass board, Insulated crepe paper,NHN, DMD, Electrician cotton belt,Copper clad laminated

Power Transformers

Epoxy resin pouring dry type transformer, oil immersed transformer, dry phase shifting rectifier transformer,Mining transformer, box transformer

Insulation Compressed Pressboard

Insulation Compressed Pressboard has good mechanical strength, high electrical strength, large tightness, low shrinkage and good flatness. * Ingredients: Insulating pressboard is made of high-purity 100% sulfate wood pulp by high pressure processing. * Features: High chemical purity, high mechanical strength, mechanical properties and electrical properties after oil immersion. * Uses: Widely used in oil-immersed power transformers and reactors, capacitors, tap-changers, etc. * Thickness: 0.1mm-4mm * Size: 0.1mm-0.5mm in rolls, width 1000mm 0.8mm-4.0mm in sheet form, size 1000mm × 2000mm…

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What is the difference between Filament Wound Epoxy Tubes and a general epoxy tube?

The general epoxy tube is made of glass fiber cloth, which is suitable for general ordinary insulating materials. The accuracy is not very high. The machinability is not as high as that of the epoxy wound tube. Filament Wound Epoxy Tubes  is a tube made of high-quality glass fiber impregnated with ultra-low viscosity high temperature epoxy resin, which is cross-wound under the control of a microcomputer. It is a high-quality raw material for manufacturing high-pressure, UHV SF6 high-voltage electrical appliances…

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Insulation Crepe Paper

In order to meet the needs of major transformers and transformer manufacturers, ZTELEC has introduced low dielectric loss Finnish Insulating Cable Paper and 500KV inter-turn paper as raw materials for electrical crepe insulation paper. The produced insulating crepe paper has good compatibility with transformer oil. Used in oil immersed transformers, transformers, reactors. Insulation crepe paper specification: 0.05mm、0.075mm、0.13mm Characteristics of insulating crepe paper: High voltage resistance and insulation; Mechanical toughness; High temperature resistance and heat insulation; Chemical compatibility; Low temperature performance;…

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Why should the transformer be installed with a noise controller

The power transformer will have a sound during normal operation, and this sound needs to be controlled. In addition to the sound produced by normal work, there will be noise due to structural reasons of different parts. And there are many situations in which the transformer is installed. Some of them are installed near residential buildings. The noise will affect the lives of residents. Therefore, a noise controller needs to be installed. How is the noise controller installed and how…

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Causes of transformer noise

The noise of the transformer is mainly caused by the magnetic induction generated by the core and the winding, and the noise generated by the magnetic field induced longitudinal vibration of the core lamination is the main component of the transformer noise. The amplitude of the vibration is related to the magnetic flux density in the core lamination and the magnetic properties of the core material, but has little to do with the load current. The reason why the iron…

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How to calculate the no-load loss of the transformer

P0 – no-load loss, mainly iron loss, including hysteresis loss and eddy current loss; The hysteresis loss is proportional to the frequency; it is proportional to the power of the hysteresis coefficient of the maximum flux density. The eddy current loss is proportional to the product of frequency, maximum flux density, and thickness of the silicon steel sheet. PC – load loss, mainly the loss of resistance when the load current passes through the winding, generally called copper loss. The…

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Phenolic Cotton Cloth Laminated Rod

1,What is a phenolic cotton laminated rod? The product is made of cotton cloth impregnated with phenolic resin and hot pressed by a mold. Has high mechanical properties and processability. The heat resistance grade is E grade. It has a wide range of applications in mechanical and electrical applications, such as insulation structural components in generators, motors, power distribution cabinets and other electrical equipment. The main material is imported prepreg, the color is white, yellow, green, normal temperature 130 At…

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Characteristics of New Class F Insulation Dispensing Paper for Transformers

1. Class F insulation tape for  transformers is an insulating material that is coated with modified epoxy resin on each piece of insulating paper. The coating layer begins to melt at a certain temperature during the winding drying process, resulting in adhesion. As the temperature rises, it begins to solidify, allowing the windings and adjacent layers to reliably bond into a fixed winding unit. The adhesive strength of the epoxy resin is sufficient to prevent the displacement of the layers…

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Epoxy coated electrical paper DDP

Epoxy coated electrical paper DDP is made of electrical insulation paper and epoxy resin in rhombic form. Epoxy resin is used for ddp. It is a latent hardener material. The epoxy resin of this material contains latent curing agent. At room temperature (below 35 ° C) is a dry material that does not stick. The material has excellent mechanical properties and good dielectric properties after heat curing. In use, the coating layer begins to melt at a certain temperature during…

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ZTELEC laminated wood product features

ZTELEC specializes in the production of all kinds of electrical laminated wood and processed parts, using international standard laminated wood series, suitable for all kinds of oil-immersed power transformers. product description Substrate: layered birch veneer Uses: It is an ideal material for manufacturing various transformers and transformers. It is used to manufacture insulating materials such as coil press plates, core pads and wire supports. Standard size: 3000×1500mm & 3000×1000mm & 2000×1000mm & 1000×1000mm & 3000×3000mm Standard thickness: 10-200mm Processed products of…

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