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A step-up transformer is a transformer that is used to raise the output voltage while retaining the current flow constant and without variance. This kind of transformer is predominantly used in power transmission and generation stations. The main and secondary windings are used in this transformer. In contrast to the secondary winding, the main winding has fewer twists.
The center and windings can be used to create the step-up transformer.
Core
A high permeable material may be used to build the center of the transformer. The magnetic flux will pass through this core material with less loss. As compared to nearby air, the main material has a high permeability. As a consequence, the magnetic field lines inside the core material would be limited. As a consequence, by lowering transformer losses, transformer performance can be increased.
Magnetic cores allow magnetic flux to flow through them, but they can cause losses in the core due to hysteresis, such as eddy current losses. To render magnetic cores identical to ferrite or silicon steel, hysteresis and low coactivity materials are used.
The transformer core can be laminated to keep eddy current losses to a bare minimum and to avoid core heating. When the heart heats up, any electrical energy is wasted, and the transformer's performance suffers.
Windings
The step-up transformer's windings will assist in the transmission of the current wound on the transformer. These windings are specifically meant to keep the transformer cold and to survive test and operating conditions. The wire density on the primary winding side is thick, but there are less twists. Similarly, the wire density in the secondary winding is thin but involves a number of twists. This can be constructed in such a way that the main winding holds less power voltage than the secondary winding.
The transformer's windings are made of aluminum and copper. Although the cost of aluminum is smaller than that of copper, the transformer life can be improved by using copper. Different types of laminations, such as EE type and EI type, are available in transformers to minimize eddy currents.
The symbolic representation of a step-up transformer is shown below. The input and output voltages are denoted by V1 and V2, respectively, in the following diagram. T1 and T2 are the turns on the transformer's windings. The input winding is primary, while the output is secondary in this case.
Since the main wire has less turns than the secondary, the output voltage is greater than the input voltage. As alternating current flows in a transformer, it flows in one direction, then ceases and shifts direction to run in the opposite direction.
In the area of the winding, the current flow may produce a magnetic field. As the present flow changes direction, the magnetic poles will change directions as well.
Via the magnetic field, voltage is induced in the windings. Mutual induction defines the voltage that is generated inside the secondary coil as it is put in a traveling magnetic field. As a result of the AC in the primary winding, a traveling magnetic field is formed, allowing voltage to be induced in the secondary winding.
This step-up transformer rule can be used to evaluate the key relationship between the number of turns in each coil and the voltage:
V2/V1 = T2/T1
Where 'V2' is the voltage in the secondary coil; ‘V1’ is voltage is the primary coil; 'T2' turns on the secondary coil; 'T1' turns on the primary coil.
1. High frequency Step-up Transformer
The high-frequency step-up transformer adopts a high-frequency voltage doubler rectifier circuit, applies the latest PWM pulse width modulation technology and power IGBT devices, and according to the electromagnetic compatibility theory, adopts a special process to make the DC generator high-quality and portable. It is composed of a control box and a voltage doubler device, with built-in protection resistors, with voltage zero-gate protection, over-current, and over-voltage protection functions. Small size, light weight, easy to carry, convenient, safe, and reliable. It is suitable for on-site DC high voltage test of electric power department, DC characteristic test of lightning arrester and other occasions where DC high voltage is required.
DC step-up transformer has the characteristics of small size, light weight, compact structure, complete functions, strong versatility, and convenient use. It is especially suitable for power systems, industrial and mining enterprises, scientific research departments, etc. to conduct the insulation strength test of various high-voltage electrical equipment, electrical components, and insulating materials under the frequency or DC high voltage. It is an indispensable important equipment in high voltage test.
Energy saving and low noise: the use of high-quality cold-rolled silicon steel sheet stacking; full oblique joints; special processing technology, effectively reducing the vibration and noise during operation; and the introduction of new materials, new processes, and new technologies such as computer optimization design, so that The transformer is more energy-efficient and quieter.
High reliability: Improving product quality and reliability will be our unremitting pursuit. Carry out a lot of basic research in quality assurance system and reliability engineering, actively carry out reliability certification, and further improve the reliability and service life of transformers.
Environmental protection characteristics: It has heat resistance, moisture resistance, stability, chemical compatibility, low temperature resistance, radiation resistance and non-toxicity.
AC step-up transformer is a device that transforms AC voltage, current, and impedance. When AC current is passed through the primary coil, AC magnetic flux is generated in the iron core (or magnetic core), causing voltage (or current) to be induced in the secondary coil. ). The transformer is composed of an iron core (or magnetic core) and a coil. The coil has two or more windings. The winding connected to the power supply is called the primary winding, and the remaining windings are called the secondary winding. The AC step-up transformer has the characteristics of small size, lightweight, compact structure, complete functions, strong versatility, and convenient use. It is especially suitable for power systems, industrial and mining enterprises, scientific research departments, etc. to conduct insulation strength tests under the frequency or AC high voltage of various high-voltage electrical equipment, electrical components, and insulating materials. It is an indispensable important equipment in high voltage test.
Compared with oil-type transformers, dry-type step-up transformers have no oil, so there is no fire, explosion, pollution, etc. Therefore, electrical codes and regulations do not require dry-type transformers to be placed in a separate room. Especially with the new series, the loss and noise have been reduced to a new level, creating conditions for the transformer and low-voltage panel to be placed in the same power distribution room. The safe operation and service life of dry-type step-up transformers largely depend on the safety and reliability of the transformer winding insulation. The winding temperature exceeds the insulation withstand temperature and the insulation is damaged, which is one of the main reasons that the transformer can not work normally. Therefore, the monitoring of the transformer's operating temperature and its alarm control is very important. According to the use environment characteristics and protection requirements, dry type Different housings can be selected for step-up transformers. The IP23 protective enclosure is usually selected to prevent solid foreign objects with a diameter greater than 12mm and small animals such as rats, snakes, cats, and birds from entering, causing malignant failures such as short-circuit power failures, and providing a safety barrier for live parts. If you need to install the transformer outdoors, you can choose an IP23 protective enclosure. In addition to the above IP20 protective function, it can also prevent water droplets within a 60° angle to the vertical. However, the IP23 shell will reduce the cooling capacity of the transformer, so pay attention to the reduction of its operating capacity when selecting.
Low-frequency transformer core flux is related to the applied voltage. The excitation current in the current does not increase with the increase of the load. Although the iron core will not saturate when the load is increased, the resistance loss of the coil will increase. If the rated capacity is exceeded, the heat generated by the coil cannot be dissipated in time, and the coil will be damaged. If the coil you use is made of superconducting material, the current will increase. It will not cause heat, but there is still impedance caused by magnetic leakage inside the transformer, but the output voltage will drop as the current increases. The greater the current, the lower the output voltage, so the output power of the transformer cannot be unlimited.
When choosing a step-up transformer, there are many aspects to remember. They are:
Transformers Efficiency
Number of Phases
Transformers Rating
Cooling Medium
Material of Windings
Advantages
The advantages of step-up transformers are:
Used in residential and commercial places
Power Transmitter
Maintenance
Efficiency
Continuous Working
Quick Start
Disadvantages
The disadvantages of step-up transformers are:
Requires a cooling system
Works for Alternate Current
Size of these transformers is huge
The following are some of the implementations for step-up transformers:
These transformers are used to stabilize voltage from low to high in electronic devices such as inverters and stabilizers.
It's a system for transmitting energy.
This transformer is used to adjust the high voltage produced by the alternator in transmission lines.
This transformer is also used to control electric motors, X-ray machines, microwave ovens, and other electronic equipment.
It's a material that's used to fuel electrical and electronic equipment.
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 