2021-10-15
A method for manufacturing TPY iron cores
To reduce iron loss, TPY cores used in rotating electrical machines such as motors and generators are formed by laminating thin plate-like iron particles. It is known that when manufacturing such TPY cores, to improve productivity, multiple TPY cores are laminated with metal plates and punched (i.e., perforated) into a predetermined shape. TPY cores are manufactured by simultaneously pressing multiple cores in a laminated state with metal plates using a device with a punch and die.
2021-09-26
A convenient method for manufacturing TPY iron cores by connecting silicon steel sheets
An AC contactor is an automatic switch used to connect or disconnect AC circuits with loads or large-capacity control circuits. It mainly consists of an electromagnetic mechanism, a contact system, and an arc extinguishing device. The TPY iron core of the AC contactor is an important component of the electromagnetic mechanism. Under the action of the electromagnetic mechanism of the AC contactor TPY iron core, the contacts in the contact system can be closed and opened, and the circuit can be controlled. After stacking, the silicon steel sheets are fixed with rivets. When connecting the silicon steel sheets, special tools are needed to drive the rivets into the silicon steel sheets. Without special tools, the connection of the silicon steel sheets cannot be realized, the assembly is inconvenient, and needs to be improved.
2021-09-23
What is the application scope of micro-mutual inductors?
Micro-sensors are currently successful and practical microelectromechanical devices, mainly including micro-pressure sensors and micro-accelerometers, which utilize the mechanical deformation of micro-diaphragms to generate electrical signal outputs; in addition, there are micro-temperature sensors, magnetic field sensors, gas sensors, etc. The area of most of these micro-sensors is less than 1 mm2.
2021-09-18
What is a current transformer?
Miniature instrument transformers are divided into miniature current transformers (including miniature current converters) and miniature voltage transformers. They are devices used in the power industry. Miniature instrument transformers are generally used for measurement and protection in various power instruments. Compared with ordinary transformers, miniature instrument transformers are characterized by small size (nail size) and high precision.
2020-10-28
Testing the magnetic characteristics of transformer cores and coils
The LMG series of high-precision power analyzers can measure the magnetic characteristics of transformer cores and coils, as well as accurately measure power losses. High-frequency signals are used to measure the power loss of silicon steel cores and ferrite cores.
2020-10-28
Currently, many countries adopt the popular transformer core shearing and distribution model, which is also a relatively advanced industrial chain service model that China has been paying attention to and learning from.
2020-10-28
Classification and Applications of Transformer Core Materials
The core is both the magnetic circuit and the mechanical frame of the transformer. The core consists of two parts: the core and the yoke. The windings are installed on the core legs, and the yoke connects the core legs to form a closed magnetic circuit. The yoke is further divided into upper yoke, lower yoke, and side yoke.
2020-10-28
Understanding the role of a transformer core
Transformer cores are made of various materials, common ones including silicon steel sheets and ferrites. However, commonly used transformer cores are generally made of silicon steel sheets.
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