Power Adjustable Voltage 6 12 18 Multi Winding Pulse Phase Dry Type Shifting Frequency Changer Rectifier Transformer

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Oil immersed power transformer has obtained multiple certifications and its product quality is favored by customers.
If your order quantity is large, we can customize the certificate for you need certificate.

Transformers Cores Matericals,we can customized two kinds of : Amorphous Alloy Cores or Silicon Steel Cores.

Power Transformers Coil Matericals,we also can customized two kinds of : Copper Coil or Aluminum Coil.
and There are more technologies to meet your needs.
I hope recive you massage.

Why i can say this information about custom Power transformer,Distribution transformer,Subtation transformer,Special transformer?
Because our factoy have more than 300 engineering and technical personnel,more than 1200 employees,covering an area of 240000 square meters.
Of course, our prices are reasonable and cheap, guaranteed to fit your purchasing plan.Dont't worry you plan.
We very much welcome all future partners to visit our factory and office.

Believe in the quality of our products.
Our products are mainly supplied to large national enterprises in China: State Grid, China Southern Power Grid, China Railway, various types of hydropower stations, wind power stations, photovoltaic power stations, etc. Customers can be assured of product quality.
We also cooperate with large companies abroad. For example, ENERGOMAX LLC, GREENS LTD, UZTRANSFORMERLLC, Meta Power Solutions,CENTURY ENGINEERING CONTRACTOR LTD.,MALAYSIA PHASE 2 POWER STATION PROJECT,ETC.

Core technology of phase-shifting rectifier transformer
Due to the current diversity of the topological structure of high-voltage inverters, YIXIN ELECTRICAL adopts cascade multiplexing technology, which can basically achieve perfect harmonic-free. It uses a rectifier transformer to superimpose (connect in series) multiple low-voltage modules to form a high-voltage output, and the power device uses IGBT. Of course, there are different technologies from other companies. For example, Them ACS5000 series inverter is a three-level topological structure. The 36-pulse rectifier transformer has a total of 6 phase-shifting groups, and each 2 phase-shifting groups supply power to a frequency conversion unit. The power device is IGCT. Them also has an inverter that uses 12-pulse rectifier inverter technology, and its transformer adopts a three-winding form. The 18-pulse rectifier inverter technology represented by AB (Rockwel) is different from ASIRobicon and them, and requires the rectifier transformer to adopt a three-split form.

Product Information
The temperature resistance level of H-class dry-type rectifier transformer is 180ºC. The main insulating material is Nomex paper, which is a patented product of DuPont in the United States. It is a synthetic insulating material based on aromatic amide fiber. It is C-class and has a temperature resistance of 220ºC.
Nomex paper has many advantages. It is an excellent electrical insulating material. The transformer made of it can be moisture-proof, flame-retardant, and has good environmental adaptability. In addition, the transformer is compact in size and occupies a small space. The transformer's resistance to cold and hot shocks, short circuits, and overvoltage are better than other types of transformers.
In particular, the manufacturing process and product structure characteristics of H-class rectifier transformers have very obvious advantages for rectifier transformers that require multiple taps and complex structures with multiple phase-shifting windings, which makes its manufacturing and processing cycle short, cost low, and the winding rigidity and mechanical strength guaranteed after vacuum pressure impregnation (VIP). At the same time, due to the paint film covering the surface of the insulating material, the moisture resistance of the transformer is improved.

Product Features
The small capacity adopts a vertical structure, the transformer is compact in design, occupies a small space, has good processability, high mechanical strength, good heat dissipation, and strong overload capacity. Large capacity adopts conventional horizontal type, which is easy to manufacture and install.

Application
It is suitable for electrical industry, petroleum, chemical industry, metallurgy, municipal water supply, waste water treatment, textile, paper making, pharmaceuticals, coal, cement, rolling mill (steel factory) and other industries.

Rectifier Transformer Accessories
The requirements for rectifier transformer accessories are to be equipped with fans and thermostats. The temperature sensor mostly uses PT100 probes, which are buried in the hottest point of the transformer. The temperature signal is transmitted to the thermostat or temperature control box through it. The thermostat displays the temperature in three phases. The thermostat sets three control points, which respectively start the fan, over-temperature alarm, and over-temperature trip function. Some manufacturers require the burial of a temperature switch with a normally closed contact, which directly provides a temperature signal through the temperature switch to control the operation and stop of the inverter. 12-pulse and 18-pulse transformers basically have enclosures with different protection levels and can be placed separately from the inverter.

The low voltage winding adopts the whole section of copper foil, which is wound on the special low-voltage foil winding machine with the F-grade insulation. The foil coil solves the outstanding problems such as low voltage, high current coil winding, high short-circuit stress, unbalanced ampere turns, poor heat dissipation effect, windingspiral angle, unstable manual welding quality and so on. At the same tim-e, the winding ends of our company aresealed with resin, cured and formed, moisture-proof and antifouling. The lead copper bar is automatically welded byargon arc welding.

Dry Type Power Transformer Accessories

All the accessories you need to customize our products to your needs.
The casing is made from bolts on a steel plate with removable panels for attachment and tape. Depending on the application and your requirements, the surface treatment can be galvanized, painted. The design is optimized to ensure the required cooling of the transformer at all levels of protection. The enclosure can be shipped assembled on the transformer or flat packed for on-site assembly.
Other Accessories
cooling fan.
Temperature monitoring unit (thermal control system)

Transformer Test

Transformer ratio and connection
Measurement of load losses and short circuit impedance.
Measurement of no-load losses.
Separate source withstand voltage test
Induced over-voltage test
Temperature rise test
Lighting impulse withstand voltage test
Measurement of partial discharge
Other transformers like rectifier transformer are also available on request.
  

Our company has a relatively strong production capacity and efficient marketing team.Products include 110KV,220KV large ultra-high voltage transformers and 35KV below various dry transformers,oil-immersed transformers,amorphous alloy transformers,pre-installed substation and various specifications of box transformer,furnace transformer,rectifier transformer,mining transformer and other special transformers.All products of the company have passed the routine,type and special tests of the National Transformer Quality Supervision and inspection Center and wuhan High Voltage Research Institute of the State Electric Power Corporation.The enterprise has passed IS09001:2015 quality management system certification;Jiangsu province enterprise measurement certification;At the same time,10KV,35KV class power transformers,box substation and the adoption of IEC certification.Product sales cover the national market,but also exported to Australia,New Zealand,India,Madagascar,Vietnam and other countries and regions.

Transformer for On-site installation