年表作成・共有サービス - pastport

https://www.zjyb-electric.com/efficiency-of-transformer.html

The efficiency of transformer: At the rated power,the ratio of the output power and input power of the transformer is called the efficiency of the transformer,that is η= x100%. The η in the formula is the efficiency of the transformer; P1 is the input power and the P2 is the output power.When the output power of the transformer（P2） equals the input power（P1）, the efficiency of the transformer is equal to 100% and the transformer will not produce any loss. But in fact this transformer does not exist. When the transformer transmits electrical energy, it always produces loss and this loss mainly includes copper loss and iron loss. Copper loss refers to the loss caused by the resistance of the transformer coil. When the current passes through the coil, it will cause the resistance heating. And part of the electrical energy is changed into heat energy and this part of energy is lost. Because the coil is usually twisted by the insulated copper wire, it is called the copper loss. The iron loss of the transformer consists of two aspects. One is the hysteresis loss. When the alternating current passes through the transformer, the direction and size of the magnetic line of the silicon steel sheet will change along with the transformer, so that the internal molecules of the silicon steel sheet will rub each other and give off heat energy, which will consume part of the electric energy. This is the hysteresis loss. The other is eddy current loss. When the transformer is working, a magnetic line of force will pass through the core, and an induction current will be generated on a plane perpendicular to the magnetic line of force. Because the current itself forms a closed loop and forms a circulation and presents the shape of the whirlpool, it is called a vortex. The existence of the eddy causes the core heating and consume energy and this loss called the eddy current loss. The efficiency of the transformer is closely related to the power level of the transformer. In general, the power is greater, the loss and output power are smaller,and the efficiency is higher. On the other hand, the power is smaller, the efficiency is lower.

Yuebian Electric Co.,Ltd, approved by ISO9001, is one of the largest china power transformer manufacturers, we provide transformer maintenance service, double wound transformer definition, oil transformer and etc. Want to know more? Please contact us.

5.
Electrical Transformer Maintenancehttps://www.zjyb-electric.com/electrical-transformer-maintenance.html

Electrical Transformer Maintenance
It is a fundamental requirement for transformer professionals to understand its working principles and the internal structure of the transformer itself. Before the repair work, the staff must be prepared to analyze the possible problems and prepare the various materials and tools to be used in the maintenance. At the same time, contact with the welder, the engineer, the chemical oil treatment personnel and so on the staff that may help, and let them coordinate work. A power outage should be conducted prior to the maintenance of the transformer, and the transformer shall be in a state of stop working, and adjust all the things accordingly as needed. At the same time, the staff should pay attention to their own clothes and other things, don't dress a lot of jewelry or other things on the clothes, and to ensure the safety, don't bring any other small devices, and avoid mistakes or things that are forgetted that affected the transformer maintenance and repair work.
When everything is ready, with the knowledge of the transformer, skilled technical, proficient skills, and light packing, the staff can start to repair work. Of course, always keep in mind the belief of "safety first" in the maintenance process.

Yuebian Electric Co.,Ltd, approved by ISO9001, is one of the largest dry type transformer supplier, we provide transformer maintenance service, double wound transformer definition, oil immersed transformer and etc. Want to know more? Please contact us.