Tag: transformer

Infrared thermal imaging cameras convert invisible infrared radiation into visible thermal images and reflect the temperature distribution of the target surface. Different objects and even different parts of the same object differ in their ability to radiate and how strongly they reflect infrared rays. By exploiting the difference between the radiation of an object and the background environment, as well as the difference between the radiation of various parts of the scene itself, an infrared thermal image can show the rise and fall of various parts of the scene, and thus reveal the characteristics of the scene. The transformer is an important equipment of the power supply system, and the failure is initially accompanied by partial or overall temperature abnormalities. ATO thermal imaging cameras can detect and diagnose equipment failures simply, safely, in real time and intuitively, ensuring equipment safety and long-term operation.

Leakage currents present a possible risk to patients in the unique setting of a hospital, placing additional demands on the electrical design. Medical IT systems (medical isolation transformers, etc.) must be installed in particular in locations where patient safety is crucial, such as operating rooms, intensive care units, and cardiac operating rooms. These locations must also have a steady power supply for the medical equipment they house.

Medical isolation transformer has strong anti-interference ability, which can effectively eliminate the noise, clutter, high voltage, surge and so on on the power grid, so as to provide a high-quality electric environment for the customer's equipment.

What is the transformer?

The transformer is made up of an iron core (or magnetic core) and one or more windings of a coil. The primary winding of the coil, which is linked to the power source, is referred to as the primary coil, and the remaining windings are referred to as the secondary coil.The simplest iron core transformer consists of two coils with unequal numbers of turns mounted on the core and a core made of soft magnetic material.

The core's function is to make the magnetic coupling between the two coils stronger.The core is made of a laminated silicon steel sheet that has been coated; there is no electrical connection between the two coils, and the coils are wound using insulated copper (or aluminum) wire to reduce eddy currents and hysteresis losses in the iron. The primary coil (or primary coil) is the coil connected to the AC power source, and the secondary coil is the coil connected to the appliance (or secondary coil).

Electricity, which is immediately changed by the generators of hydroelectric power stations and power producing stations, is widely employed as an energy source in modern industrial businesses. Depending on the transmission distance, the electricity produced by the generators will be transmitted at various voltage levels, hence a special device known as a "control transformer" is required to modify the voltage. It is a conversion tool because, in daily life, the power of various control transformer models is not the same, and the voltage and current limit values used are also different. However, electricity is transmitted from the same location, but the value required for each region is different. As a result, our transformer was developed to address these issues.Here we will take you through the purpose of control transformers.

1. How to choose the single-phase isolation transformer's capability?

1) Principle of selecting single-phase transformer capacity

Reducing the capacity of the equipment will help to alleviate the excessive line losses that currently exist in the 10kV distribution network when the power load is typical. The low-voltage distribution network's load can alter at any time, depending on the time of year, the season, etc. When developing a 10kV distribution network, a single three-mixed distribution transformer installation method is typically employed. This scheme can be customized with one or more single-phase distribution transformers. Determine the capacity demand of a single-phase isolation transformer based on the specific changes in electricity consumption load and the low-voltage grid's mode of operation, then select the transformer that is most appropriate for power delivery.

An autotransformer is a special transformer with primary and secondary without insulation. In short, it means that its primary and secondary windings are on the same winding, i.e., a transformer with only one winding, which means it is a special transformer with a common set of coils for output and input. When the autotransformer is used as a step-down transformer, part of the line turns are taken out from the winding as the secondary winding, and when the autotransformer is used as a step-up transformer, the applied voltage is only added to part of the line turns of the winding. Because DC power cannot be directly stepped up, it needs to go through electronic and other components.

Autotransformers and isolation transformers are two different forms of transformers that work on the same principle. Both use an energy conversion between the alternating magnetic field and the alternating current in the coil to convert the voltage. So what's the difference between them? The following article lists six major differences between autotransformers and isolation transformers.

A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. Transformers are used to change AC voltage levels, such transformers being termed step-up (or step-down) type to increase (or decrease) voltage level. Step-up transformer is widely used in high-frequency fields, such as inverter power supplies. In this article, we will briefly introduce some maintenance precautions of step-up transformer.

A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the iron core (magnetic core). The main functions are: voltage transformation, impedance transformation, isolation, etc. According to different uses, transformers can be divided into several categories. Today we mainly introduce the applications and advantages of isolation transformers, toroidal Transformers, control transformers, and autotransformers, so that you can make better choices when purchasing.

Control transformers are compact dry-type transformers. It is often applied as a transformer for supplying power to machines, electrical machinery, relays, lighting, etc. As a power supply system for control circuits in electrical equipment. Control transformer is suitable for AC 50Hz/60Hz, voltage 1000V and the following power supply circuit, which can work continuously for a long time at rated value. Control transformers operate on the basic principle of the magnetic effect of current. Control transformer consists of transformer core and coil transmission line. It has two coils, the primary coil and the secondary coil.  The secondary coil is outside the primary coil. When the primary coil is connected to the AC current, the transformer core creates an alternating electromagnetic field and the secondary coil creates an induced current. It can not only change the voltage of the AC current, but also change the characteristic impedance. And it can change the flow of electricity without exceeding the output power of the design scheme. ATO offers more reliable control transformers at a more affordable price.

Toroidal transformer provides excellent output properties and anti-interference capability. It is a cost-effective and competitive transformer in electronic transformers. Toroidal transformers have developed a complete and mature series and are used in a wide range of applications such as computers, medical, household appliances and lighting. ATO toroidal power transformers are small, lightweight, and built with all copper wires. It has received numerous certifications for various international standards. The power capacity ranges from 50VA to 5kVA, with 110V/120V/220V/230V/240V AC 50/60Hz single primary voltage and various single or secondary voltages. Not only is the ATO toroidal transformer safe and reliable, but also affordable. We offer the best price for our customers with higher efficiency.

Transformer is a device that transform AC voltage, current and impedance. It uses the principle of electromagnetic induction to transform AC power of one voltage level into AC power of another voltage level. When an AC current is passed through the primary coil, an AC magnetic flux is generated in the iron core, causing a voltage (or current) to be induced in the secondary coil. It is composed of an iron 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.

Transformer mainly uses the principle of electromagnetic induction to work. The specific process is when an AC voltage U1 is applied to the primary side of the transformer, and the current flowing through the primary winding is I1, the current will generate alternating magnetic flux in the iron core, which makes the primary winding and the secondary winding electromagnetically connections.

The "input" and "output" terminals of a isolation transformer should be short-circuited to test their insulation resistance against the ground wire by a megohmmeter. When measuring by 1000V megohmmeter, the resistance value is greater than 2M ohms. The cross-sectional area of the isolation transformer input and output power lines should meet the requirements of its current value. It is appropriate to configure the electric current density of 2 ~ 2.5a /mm2.

The principle of three-phase isolation transformer basically adopts the principle of electromagnetic induction. It is safe to use a three-phase isolation transformer, which is generally used as a maintenance power supply. The isolation transformer is commonly 1:1 transformer, but it has different specifications. Three-phase isolation transformers are used for changing voltage, lighting, power supply and rectifying power supply, widely applied to industrial and mining enterprises, power plants, airports, high-rise buildings, subways and other places with high fire safety requirements.

As a relatively safe transformer in the power industry, isolation transformer has been widely used in electronic industry or industrial and mining enterprises, machine tools and mechanical equipment in general circuit control power supply, safety lighting and indicator power. Due to its excellent product performance, isolation transformer has been used in more fields and scope, and may gradually replace the ordinary transformer. What's the difference? The following is a simple analysis of the main differences between the isolation transformer and the ordinary transformer.

The isolation transformer is a device adopting the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the core (magnetic core). The main functions are voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer) and so on. Due to its excellent product performance, isolation transformer has been used in more fields and scope. As we all know, power transformation relies mainly on the step-up & step-down transformer.

Isolation transformer is the transformer with electrical isolation between the input winding and the output winding. Isolation transformer is used to avoid users accidentally touching the charged body at the same time. Isolation transformer, whose transformer ratio is usually 1:1, is a special transformer with high insulation strength between the primary winding and secondary winding to isolate different potential to suppress common mode interference. The main function of the step-up & step-down isolation transformer is to completely insulate the primary side and the secondary side, and also to isolate the loop. In addition, the high frequency loss of the iron core is used to suppress the high frequency clutter into the control loop. 

Although three-phase isolation transformers and single-phase isolation transformers are different types of step-up & step-down isolation transformer products, they all have very similar functions and can be used for converting voltage and current, safe isolation and voltage regulation, and play a very important role in many professional fields. However, there are significant differences between them.

Toroidal transformer is a kind of step-up and step-down power supply device, which has the advantages of small volume, low noise, less heat and high performance. Generally, we use a variety of voltages, such as 220V for domestic lighting, 36V for industrial safety lighting, and the voltage of the welding machine needs to be adjusted. These cannot be separated from the toroidal transformer, which can step down the voltage we need through the principle of electromagnetic mutual inductance of the main and auxiliary coils. But how to improve the conversion efficiency of toroidal transformers has been a problem for many people. In fact, the conversion rate of a toroidal transformer is determined by the transformer's power, production materials, and its work site.