Basic Information.

This product conforms to the national standard GB10941-2013 (IEC 60076) power transformer and GB/T6451-2015 indoor dry transformer technical parameters and requirements. Epoxy resin cast transformer is a kind of solid insulated encapsulated winding power transformer. Epoxy resin dry type transformer adopts epoxy resin as insulation material, high and low voltage winding adopts copper strip (foil), pouring epoxy resin vacuum curing, forming high-strength FRP body. Insulation grades are F and h. Epoxy resin dry type transformer has the characteristics of good electrical performance, strong lightning impact resistance, strong short-circuit resistance, small size, light weight and so on. The temperature display controller can be installed to display and control the working temperature of the transformer winding to ensure the normal service life of the transformer.

Structure characteristics of dry-type isolation transformer:
Iron core adopts high quality cold rolled grain oriented silicon steel sheet, iron core silicon steel sheet adopts 45 degree full oblique connection, so that the magnetic flux passes along the direction of joining silicon steel sheet.
There are four winding forms, respectively, winding, epoxy resin with quartz sand filling and casting, glass fiber reinforced epoxy resin casting column (i.e., thin insulation structure) and multi-strand glass fiber impregnated epoxy resin winding.
The third type of glass fiber reinforced epoxy resin casting is generally used, because it can effectively prevent the casting of resin cracking and improve the reliability of the equipment.

 

Our dry-type transformers need to be designed before production, and when confirming the design of the transformer, we need to pay attention to the two aspects of the winding and insulation.
First of all, confirm that the drawings are consistent with the production of products, to confirm its capacity is correct and then look at the line gauge, find out the line gauge to confirm the number of turns. Secondly, to confirm what kind of wiring, high-voltage drawings to look at its tap out, count the number of turns out of the head, low-voltage look at what kind of winding, the length of the head, the position of the transposition, the winding of the inner and outer diameters, amplitude to the size and so on.
Secondly, according to the coil inside the warp calculate the length and width of the paper tube cardboard, and then from the drawing number to find out the length of the end of the insulation drawings, including oil channel pads and corrugated oil channel thickness, in turn, to find out the end of the circle and the upper and lower iron yoke insulation.
The second part is to start the side winding, insulation.
Third, semi-finished coil insulation test. Low-voltage coil winding is completed and winding process to use a multimeter to measure insulation, mainly to measure whether the turns are short-circuited.
Fourth, lead hot tin pre-assembly and welding. Including lead preparation, lead welding, lead overall assembly welding and insulation wrapping.
Fifth, labeling.
Sixth, coil set.
Seventh, semi-finished product testing.
Eighth, overall assembly.

Transformers have a wide range of applications and many types. According to the use of the classification of power transformer, electric furnace transformer, rectifier transformer, power frequency experiment transformer, voltage regulator, mining transformer and so on. When classified according to the structural form, it can be divided into single-phase and three-phase transformers. 

According to the cooling medium, there are dry transformers, oil-immersed transformers, inflatable transformers, etc., according to the cooling method, there are natural cooling type, air-cooled type, water-cooled type, forced oil circulation water-cooled type, forced oil circulation air-cooled type, water-cooled type, etc., and there are autotransformers, double-coil transformers, three-coil transformers, etc. When classified according to the voltage regulation method, it can be divided into on-load voltage regulation and no-load voltage regulation transformers, and when classified according to the neutral insulation level, it can be divided into fully insulated transformers (the neutral insulation level is the same as the starting insulation level) and semi-insulated transformers. According to the core type classification, can be divided into core type, shell type, radiation type and so on.

Hebei Leicheng Electric Power Technology Co., LTD is a technology-oriented enterprise specializing in R&D, production, sales and services of power transformers, HV/LV switch cabinets and related products.

Since its inception, our company has been committed to the path of professional development. By virtue of its strong technical force, domestic and foreign advanced equipment, innovative ideas and extensive manufacturing experience, it has been certified by ISO9000 and adopts CAD to provide customers with environment-friendly, energy-saving, low-carbon and high-quality products suitable for regional characteristics to meet the market and the basic requirements of different customers.

Currently the company mainly produces HV/LV power distribution cabinets, pre-fabricated substations, power distribution transformers, HV/LV switches and other products.

Q: Are you a Manufacturer, factory or Trading company ?
A: Yes, We are engaging in the research and development, production and operation of transformer for over 10 years.

Q: What's your warranty terms?
A: We offer 12 months warranty time.

Q: Production Time?
A: In general, it take 4~6weeks and it depend on the different style.

Q: What's your payment terms?
A: Pay by T/T and  L/C is acceptable.

Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.Each of our unit has  3C  certificate. If you need any other Certificate, we can help you to apply it.

Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.

 Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".

Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.

         Our plants produce all types of transformers and related power equipment, including substations, capacitor cabinets, header cabinets, dry transformers and more. Related products can be found on our home page, or contact me directly, let me help you!