Calculation of the overall dimensions of the transformer for semi-automatic welding. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Electrician

Electric welding. Calculation of the overall dimensions of the transformer for semi-automatic welding. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / welding equipment

Comments on the article

To determine the overall power of the welding transformer, it is necessary to divide the sum of the capacities of the individual sections in half:

Determine overall dimensions of the transformer

where J is the current density in the windings (8 A/mm2 for copper (Cu), 5 A/mm2 for aluminum (Al) and 6,5 A/mm2 for a combined copper-aluminum (CuAl) winding); F - network frequency, Hz; TO_о - window filling factor (0,33-0,4); To_с - steel filling factor of the core section (0,95).

Let the primary winding be wound with copper wire, and the secondary with aluminum, then:

For rod transformers, the following dimension ratios are recommended:

where

Consequently, the

If Z = 4, then

From here you can find the size a of the core:

We choose a = 3,5 cm. Knowing the value of a, we find the dimensions c, b, h: c = a • X = 3,5 • 1,6 = 5,6 cm; h *= a • Z = 3,5 • 4 = 14 cm;

Completing the transformer calculation

Determine the average length of the coil:

Let's determine the EMF of one turn of the transformer:

If the calculated values of D_B and E_B are very different from those previously accepted, then you will have to return to the selection of transformer parameters.

Number of turns of the secondary winding:

Cross-section of the aluminum wire of the secondary winding:

Number of turns of the first section of the primary winding:

Cross section of the wire of the first section of the primary winding:

Number of turns of the second section of the primary winding:

Cross section of the wire of the second section of the primary winding:

Number of turns of the third section of the primary winding:

Cross section of the wire of the third section of the primary winding:

Number of turns of the fourth section of the primary winding:

Cross section of the wire of the fourth section of the primary winding:

Number of turns of the fifth section of the primary winding:

Cross section of the wire of the fifth section of the primary winding:

Author: Koryakin-Chernyak S.L.

See other articles Section welding equipment.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

The threat of space debris to the Earth's magnetic field 01.05.2024

More and more often we hear about an increase in the amount of space debris surrounding our planet. However, it is not only active satellites and spacecraft that contribute to this problem, but also debris from old missions. The growing number of satellites launched by companies like SpaceX creates not only opportunities for the development of the Internet, but also serious threats to space security. Experts are now turning their attention to the potential implications for the Earth's magnetic field. Dr. Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics emphasizes that companies are rapidly deploying satellite constellations, and the number of satellites could grow to 100 in the next decade. The rapid development of these cosmic armadas of satellites can lead to contamination of the Earth's plasma environment with dangerous debris and a threat to the stability of the magnetosphere. Metal debris from used rockets can disrupt the ionosphere and magnetosphere. Both of these systems play a key role in protecting the atmosphere and maintaining ... >>

Solidification of bulk substances 30.04.2024

There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>

Random news from the Archive

Reusable paper 10.06.2005

The ancient Romans wrote with a sharp stick on a board covered with wax, and then erased the writing by heating the wax and smoothing it.

Two Japanese firms have released "Thermo-Mag" material, also based on wax, which allows you to repeatedly print text and drawings, and then erase them. This is a thin "sandwich" of transparent polymer sheets with a layer of wax between them. Black or colored magnetic particles are scattered in the wax.

A special printer with a thermal print head melts the wax along the contours of the letters, and the sheet is immediately passed under a powerful magnet. The magnetic dye is pulled from the melted areas of wax to the surface, and letters appear on the sheet.

To remove the text, it is heated again and passed over a magnet, and the pigment is pulled inward. The process can be repeated any number of times. The resolution of the new print material is 100 dpi.

Other interesting news:

▪ Plastic planes getting ready to take off

▪ Centuries-old lotus sprouts

▪ SpaceX to launch ASFPC-52 military satellite

▪ The plague made people centenarians

▪ Mirror of atoms

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ site section Tone and volume controls. Article selection

▪ article People of Goodwill. Popular expression

▪ How Does Color Blindness Occur? Detailed answer

▪ article European alder. Legends, cultivation, methods of application

▪ article Local lighting in the kitchen. Encyclopedia of radio electronics and electrical engineering

▪ article Wiring. External wiring. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews