Cut to length line manufacturer from China: What does the rated value on the nameplate of the transformer mean? The rated value on the transformer nameplate refers to some important electrical parameters and performance indicators of the transformer. Usually includes the following aspects: Rated capacity: The rated capacity of a transformer refers to the maximum load electric power that the transformer can continuously supply. For example, a 10MVA transformer means that the transformer’s maximum load can reach 10 megawatts. Rated voltage: The rated voltage of the transformer refers to the design voltage of the transformer. For example, a 220kV/110kV transformer means that the input voltage of the transformer is 220 kV and the output voltage is 110 kV. Rated frequency: The rated frequency of a transformer refers to the power frequency for which the transformer is designed. In China, the power frequency is usually 50Hz. Short-time withstand current: The short-time withstand current of a transformer refers to the maximum current value that the transformer can withstand in a short period of time. For example, the short-term withstand current of a transformer is 50kA, which means that the transformer can withstand an instantaneous current of up to 50 kA. Read additional information at https://www.canwindg.com/products-20760.
What is the capacity of the transformer related to? The capacity of the transformer refers to the maximum load electric power that the transformer can bear. The capacity of the transformer is related to the following factors: Input voltage and output voltage: The input voltage and output voltage of the transformer determine the transformation ratio of the transformer, which affects the capacity of the transformer. The higher the input voltage of the transformer and the lower the output voltage, the larger the transformation ratio and the larger the capacity. Load nature: Different loads have different power factors, harmonic content and other characteristics, which affect the capacity of the transformer. For inductive loads, the capacity of the transformer can be appropriately reduced; for nonlinear loads, the capacity of the transformer needs to be appropriately increased.
Transformer application of aluminum foil to make dry type transformer has small volume, light weight, good insulation performance, flame retardant, no pollution, little partial discharge, moisture proof, stable and reliable operation, low noise, low maintenance cost advantages, in the high-rise building, underground facilities, business center, residential, hotels and humid coastal areas and other applications.Want to konw composition of aluminum foil, please contact Canwin, one of the best copper foil suppliers & manufacturers in China, specialized in aluminium copper foil and transformer copper foil for over 20 years. With the rapid development of laser machines technology and equipment, it is more and more widely used in various fields. At present, most hardware products still use argon arc welding and other welding methods in production and processing.
Oil immersed transformers are the most commonly used equipment mainly because of their simple structure and reliable operation. It has faster heat dissipation, uniform conduction, and better insulation performance than the dry-type transformer.Oil transformers are used in power distribution or electrical substations. Their transformer core and coils are immersed in oil, which cools and insulates. Oil circulates through ducts in the coil and around the coil and core assembly, moved by convection.
Power distribution cabinet transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. It lowers the network voltage of 10(6)kV or 35kV to 230/400V bus voltage used by users. This kind of product is suitable for AC 50(60)Hz, three-phase maximum rated capacity 2500kVA(single-phase maximum rated capacity 833kVA, generally not recommended to use single-phase transformer), can be used in the indoor (outdoor), the capacity of 315kVA and below can be installed on the rod, the ambient temperature is not higher than 40℃, not less than -25℃, The maximum daily average temperature is 30℃, the maximum annual average temperature is 20℃, the relative humidity is not more than 90%(the ambient temperature is 25℃), and the altitude is not more than 1000m.
As a professional electrical equipment manufacturer in China, Canwin specialized in dry type transformers, electrical equipment for over 20 years. Canwin electrical products manufacturer adopts large-scale, intelligent electrical machinery equipment manufacturing mode, and strive to achieve high quality, high efficiency, low cost operation.Our electrical machinery products including cut to length lines, china slitting lines and foil winding machines.
CANWIN AUTOMATICEQUIPMENT CO.,LTD is a global leading foil winding machine supplier & manufacturer with over 20 years of experiences.Ribbon foil winding machine has unique appearance, convenient operation, intuitive data display, high degree of automation, and is well received by users. This foil winding machine is widely used in oil-immersed transformer, dry transformer, special transformer and reactor production required. Foil coils are of different thicknesses copper or aluminum foil as a conductor, with wide ribbon insulation material as the insulation between layers, with narrow ribbon insulation material as the end insulation, completed winding one time, forming a coil. The inner and outer leads of the coil are welded and wrapped up at the same time.
As a result of mutual inductance, a transformer produces a transformed voltage or current when the magnetic flux produced by one winding (primary winding) links with another winding (secondary winding). There is a magnetic coupling between these two windings, and they are electrically isolated. In addition, magnetic reluctance is also known as opposition to magnetic flux flow. If, for example, the magnetic flux produced by a primary winding passes through air or any nonferrous material in order to reach a secondary winding in a transformer, it would result in a reduction in magnetic flux. Due to the high reluctance of air or nonferrous materials, it will reduce magnetic flux. See more information on https://www.canwindg.com/
Energy management system, which uniformly allocates and manages the wind energy, photovoltaic, power grid, battery system and distribution system of micro grid, so as to achieve energy efficiency and high-quality energy allocation. The remote cloud platform and mobile terminal can optimize the system through big data analysis, while reversing the relevant information and operation status to the users’ mobile phone. Containerized Energy Storage System is a complete, self-contained battery solution for a large-scale marine energy storage. The batteries and converters, transformer, controls, cooling and auxiliary equipment are pre-assembled in the self-contained unit. Advantages of containerized power systems: customization, scalability, stackable and cost effective.
Insulation level: There are standards for insulation levels. The insulation level of a transformer with a rated high voltage of 35 kV and a rated low voltage of 10 kV is represented as LI200AC85/LI75AC35, where LI200 indicates that the transformer has a high-voltage lightning impulse withstand voltage of 200 kV, a power frequency withstand voltage of 85 kV, and a low-voltage lightning impulse withstand voltage of 75 kV, and a power frequency withstand voltage of 35 kV. The current insulation level of Aux High-Tech Co., Ltd.’s oil-immersed transformer products is LI75AC35, indicating that the transformer has a high-voltage lightning impulse withstand voltage of 75 kV and a power frequency withstand voltage of 35 kV. Because the low voltage is 400 V, it can be ignored.
When these harmonic currents flow through a transformer, they can cause increased core losses due to hysteresis and eddy currents. Hysteresis loss is related to the magnetization and demagnetization of the transformer’s core material in response to the alternating current. Eddy current loss occurs when induced currents circulate within the core material, creating local magnetic fields that oppose the main field. Both these losses increase with the frequency of the current. Thus, higher frequency harmonic currents can lead to considerably higher core losses, reducing the transformer’s efficiency and causing it to overheat, which can shorten its lifespan.