What things should pay attention to when making the core assembly and maintenance?

What things should pay attention to when making the core assembly and maintenance? As an important part of transformer, it has many key points to be attention. Content 1. Core stack of key points In the stacking link of the iron core, the large core can be stacked on the rolling table to stand up, and the small core is stacked on the platform. First of all, the support or bracket device corresponding to the core column and the yoke axis should be placed on the platform. For the core column to be tied, part of the temporary fixture should be placed, and then the upper and lower yoke clips, insulation pads,

Phase sequence problem of transformer in parallel operation In the daily operation and maintenance of the power system, the parallel operation of transformers is very common, but the phase sequence problem is very important and can not be ignored. Content 1. Phase sequence: the “order cornerstone” of the power system Phase sequence refers to the order of the voltage of each phase of the three-phase AC power supply reaching the maximum value, with positive order, negative order and zero order. For the parallel operation of transformers, the positive phase sequence is the key. Just as the traffic rules ensure the smooth road, it “guides the direction” of power transmission, so

What are the Normal Operating Conditions for Dry-type Transformers? Dry-type transformers, as crucial equipment in power systems, need to meet specific conditions to ensure safe, stable, and efficient operation. Content 1. Altitude Limitation Dry-type transformers are generally suitable for areas with an altitude not exceeding 1,000 meters. An increase in altitude leads to a decrease in air density, which will worsen the heat dissipation performance of the transformer and also affect its insulation strength. In high-altitude areas, the thin air makes it difficult to dissipate heat inside the transformer, easily causing the temperature to rise, affecting its normal operation and even damaging the equipment. When used beyond the specified altitude,

Do you know the working principle and application scope of the autotransformer? Autocoupling transformer is a special type of transformer with a unique working principle and application range. The following is a detailed answer to its working principle and the scope of its application. Content 1. Operating principle of the autotransformer The working principle of the autocoupling transformer is based on the law of electromagnetic induction. It is characterized by primary and secondary codings sharing the same set of coils, with different taps to achieve a boost or step-down. When the input winding causes an AC current, the changing current causes a magnetic field change, which generates an induced voltage

What’s the Significance of the Protection Ratings of Transformer Enclosures? The protection ratings of transformer enclosures are vital for the safe and stable operation of transformers, comprehensively considering various environmental protection needs and having multiple key implications. Content 1. IP Rating Digit Meanings The IP rating comprises two digits. The first digit shows the protection against solid foreign objects. For instance, “2” means preventing solid foreign objects larger than 12.5mm in diameter from entering. The second digit indicates liquid protection. Such as “4”, which is for protecting against water splashing from any direction. The specific details are as follows: IP Rating Digits Protection Against Solid Foreign Objects Protection Against Liquids 0

Do you know the working characteristics of the rectifier transformer? Rectifier transformer is a special transformer, mainly used to convert alternating current to direct current. The following is about the main working characteristics of the rectifier transformer introduction. Content 1. The electrical performance is stable The rectifier transformer is designed with load characteristics and grid voltage fluctuations to ensure stable electrical performance in various situations. Its reasonable insulation level and model ensure the reliability and stability of the product, and make the rectification process more stable and efficient. 2. High degree of movement stability The rectifier transformer has a high mechanical strength winding and can withstand abnormal conditions such as

How Many Types of Overvoltages Can a Transformer in Operation Suffer? During the operation of the power system, transformers are threatened by various overvoltages. If these overvoltage situations are not prevented and dealt with, they may seriously damage the insulation of transformers, affect their normal operation, and even lead to equipment damage. Content 1. Impact of Switching Overvoltages Switching overvoltages mainly stem from switching operations in the system. For example, during no-load closing, high overvoltages will be generated in the transformer windings due to the electromagnetic transient process. Since there is residual magnetism in the transformer core, when the phase of the power supply voltage and the residual magnetic voltage

Do you know what common temperature measuring devices are used in dry transformers? As an important equipment in the power system, the temperature monitoring of dry-type transformer is crucial. The following are several common temperature measuring devices and their characteristics of dry-type transformers: Content 1. mometer Platinum thermal resistance is a commonly used sensor in transformer temperature measurement. Its resistance value changes with the temperature change. By measuring the resistance value and comparing the curve, the temperature value can be accurately obtained. It has the advantages of high accuracy and good stability, and can accurately reflect the temperature change of the transformer. However, the response is relatively slow and may not

What are the Chemical Composition and Properties of Cold-Rolled Silicon Steel Sheets? Cold-rolled silicon steel sheets are a special type of silicon alloy steel produced through a cold rolling process, primarily used for making cores of motors, transformers, and generators. They exhibit excellent magnetic and electrical properties, making them crucial materials in power equipment. 1. Chemical Composition The chemical composition of cold-rolled silicon steel sheets generally includes 3%–5%silicon, 0.06%carbon, 0.15%manganese, 0.03%phosphorus, 0.25%sulfur, and 5.1%–8.5%aluminum, with the remaining being iron. Additionally, there are some impurity elements, mostly non-magnetic or weakly magnetic substances, which can cause lattice distortions, dislocations, vacancies, and internal stress, thereby affecting magnetization. 2. Properties (1) Magnetic Properties:  Cold-rolled silicon

Do you know the energy-saving technology and development trend of distribution transformers? As an indispensable part of the power system, the energy-saving technology and development trend of the distribution transformer have attracted much attention. The following are brief questions and answers for the field. Content 1. Distribution transformer energy-saving technology The energy saving technology of distribution transformer mainly includes the use of new materials, adding automatic voltage regulator and the optimal operation mode. New materials, such as amorphous alloy, can effectively reduce iron loss and improve energy efficiency; automatic regulator can automatically adjust the actual voltage and reduce the operation mode, such as reactive power compensation and three-phase balance, can