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60 years experience in insulation material production

Chinese electrical manufacturer

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Rich Experience

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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Timely resolution of customer problems, commitment to quality in the end

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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

Crepe paper for transformers

Crepe paper for transformers is made by wrinkling of electrical insulation paper. There are crepe along its lateral direction, and the crepe are pulled apart when stretched. Crepe paper with different elongation can be produced due to different wrinkle processing procedures. The thickness of the insulating paper is generally 0.05 mm to 0.12 mm, and the elongation is in the range of 5% to 200%. Insulating crepe paper is often used for the winding insulation of oil-immersed transformers, such as…

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The difference between PVC, FEP and FET

Pvc and fep are similar because they are all typical plastics. Pvc is relatively cheap, fep has a long service life, and is mostly used for auxiliary materials such as support, packaging, and casing. Most of the polymer materials such as plastics and rubber are pvc, polyvinyl chloride, the most common plastics, most of the pipes and switches used today, and its insulation is also very good. Low cost and strong mechanical properties. If it is used electronically, it is…

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The role of double-wall heat shrinkable sleeve with glue

Nowadays, in this evolving 21st century, technology and products are constantly changing and changing. Just like the appearance of double-wall heat-shrinkable tubes with glue, it has also paved the way for other products. The double-wall heat shrinkable sleeve with glue is actually a heat-shrinkable tube. Its surface layer is made of high-quality cross-linked polyolefin material, and the inner layer is processed by hot-melt adhesive compounding, which plays a protective role. First, the outer material of the double-wall heat-shrinkable sleeve with…

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How to diagnose the failure of dry distribution transformers

The dry type transformer is a little noise when it is running. This is a very normal phenomenon, but sometimes there will be a lot of noise, which means that the sound can be judged whether the transformer is faulty. In fact, the sound of dry distribution transformers can also be seen to see if there is any damage. In general, the dry transformer has several problems in the sound, which indicates that the dry transformer has failed and must…

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Dry power transformer wiring

A dry power transformer is a transformer in which the iron core and the winding are not immersed in the insulating oil. Cooling methods are divided into natural air cooling (AN) and forced air cooling (AF). Dry-type transformers can operate continuously for a long period of time at rated capacity when naturally air-cooled. When forced air cooling, the transformer output capacity can be increased by 50%. Applicable to intermittent overload operation, or emergency accident overload operation. 1. Short-circuit the “input”…

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GRE FRP pipes

Based on the Filament Wound Epoxy Tubes, ZTELEC has recorded research and development and produced GRE FRP pipes. 1. Marine and marine GRE pipes are made by epoxy resin matrix, high-strength glass fiber and other auxiliary materials through the winding process; Compared with other anti-corrosion and anti-impact measures, it has low comprehensive cost, easy maintenance and good economic benefits. It has become the largest and most used in controlling corrosion of ships and offshore platforms. Promising non-metallic pipes. 2. In…

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G10 epoxy fiberglass laminate

G10 epoxy glass fiber laminate  is a hard plate-shaped insulating material which is made by importing non-alkali glass fiber cloth into imported pure epoxy ester resin and adding corresponding imported flame retardant, adhesive, etc. G10 insulation board features Class F (155 ° C) insulation It has high mechanical and dielectric properties, good heat resistance and moisture resistance, and good mechanical processing. Epoxy fiberglass laminate use Applicable to electrical and electrical equipment for insulation structural components, including various types of switches, electrical…

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Four major differences between FR-4 CCL and aluminum CCL

FR-4 CCL and Aluminium CCL are the two mainstream CCLs on the market, but few people can tell the difference. 1, heat dissipation The heat dissipation of the aluminum substrate is higher than that of the FR-4 copper clad laminate, the heat dissipation of the aluminum substrate and the density of the insulating layer, thermal conductivity, and the thinner the insulating layer, the higher the thermal conductivity. 2, mechanical function The aluminum substrate has high mechanical strength and resistance compared…

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Composition of Aluminum base CCL

The Aluminum base CCL has a circuit layer, an insulating layer, and an insulating metal substrate. The circuit layer (usually using electrolytic copper foil) is etched to form a printed circuit for assembly and connection of the device. Compared to conventional FR-4 CCL, the same thickness and the same line width allow the aluminum substrate to carry higher currents. The insulating layer is the core technology of Aluminum base copper clad laminate, which mainly functions as bonding, insulation and heat…

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FR-4 CCL is divided into several grades

ZTELEC FR-4 CCL is generally divided into 5 levels 1. FR-4 A1 grade copper clad laminate, mainly used in military, communications, computers, digital circuits, industrial instrumentation, automotive circuits and other electronic products. This series of products has the best quality and is world class. 2. FR-4 A2 grade copper clad laminate, mainly used for ordinary computers, instrumentation, advanced home appliances and general electronic products. This series of CCL applications is used in a wide range of applications, and all performance…

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