If an animal is connected across the low-voltage bushing of a transformer， it may cause a short circuit and catch fire. 5Double winding transformer: used to connect two voltage levels in the power system. zShanxiThe insulation cardboard between the lower clamp foot of the iron core and the iron yoke falls off or is damaged， causing the overlapping pieces at the foot iron yoke to collide and cause grounding The inspection glass windows， vent valves probe points， and lead out terminals of the internal and mechanical parts of the gas relay should be intact and free of oil leakage. When dismantling or connecting leads， prevent the lead terminals from rotating together. JHelen WenUsing water and electricity to extinguish fires: Water can conduct electricity， and using a direct current water column to extinguish fires caused by electrified equipment is harmful. According to the experiment， the resistance is about ohms， and when the current exceeds mA， people feel electrified. Therefore， when extinguishing fires with electricity， if the current passing through cannot be less than mA， it can ensure the safety of the firefighters. GaIn order to prevent similar situations from happening again the author believes that the power supply station should conduct spot checks on rural transformers on a monthly， quarterly， and annual basis. Once it is found that the fuse used in operation does not match the capacity of the operating rural transformer， the responsible rural electrician should be severely punished and not lightly spared. A transformer is composed of two or more coil windings wound around the same iron core， and operates according to the principle of electromagnetic induction. The installation location of transformers should be considered for ease of operation， maintenance， and transportation， and a safe and reliable place should be selected. The rated capacity of the transformer must be selected reasonably when using it. When the transformer operates without load， a large amount of reactive power is required. These reactive powers need to be supplied by the power supply system. If the capacity of the transformer is chosen to be too large， it not only increases the initial investment， but also causes the transformer to operate under no-load or light load for a long time， resulting in an increase in the proportion of no-load losses， a decrease in power factor， the rated capacity of the transformer should be selected according to the needs of the electrical load， and should not be too large or too small. In the past decade， Chinas power construction has developed rapidly and achieved remarkable results. Among them， the installed capacity of power generation has grown rapidly， the speed of power grid construction has advanced by leaps and bounds， the power structure adjustment has been continuously optimized， the level of technical equipment has been greatly improved， the energy-saving and emission reduction effects have been significant， and the power construction has achieved leapfrog development. This has provided strong impetus for the stable and rapid development of Chinas economy and society， and played an important role in supporting and ensuring the improvement of peoples lives.
Current location: Home>; News Center>; Industry News>; Amorphous alloy transformer and its energy-saving effect Release time: November ， Text source: Huaxing Xiaoxu Click count: tWhen a transformer is operating with a load， as the secondary current increases， the transformer must maintain the main magnetic flux in the iron core constant， and the primary current must also increase accordingly to achieve balanced secondary current. LThe insulation of the iron core is damaged， the full current increases， the temperature rises， and internal combustion occurs. QExecutive standardAn insulation system that combines H-grade insulation materials with high ignition point oil. xOReason analysis: The common cause of transformer winding deformation is: from the perspective of design reasons， insufficient consideration was given to the transformers short-circuit resistance ability during design， and insufficient material strength was selected; From the analysis of production process， during production， the winding is not tightly wound， the drying is not sufficient， the pressure is uneven， the support bars are not tight， and the concentricity deviation is large; From the analysis of operational reasons， frequent short circuits and mutual interference at the outlet have resulted in a low level of operation. In addition， if the power supply voltage is relatively high the leakage current through the water column is also relatively large. Therefore， but not an early transformer. A complete range of productsxRural power employees must follow the system. JThe main protection includes steady-state ratio differential differential quick break， power frequency variation ratio differential， zero sequence ratio differential， and overexcitation protection. Backup protection includes overcurrent， zero sequence overcurrent， overvoltage， zero sequence overvoltage， leaving only the steel wire and the measuring box rusted， it is ridiculous that the silicone has already changed color. oSMany companies have successfully developed Nomex paper H-grade dry-type distribution transformers that can pass routine， type， and special tests including sudden short circuit tests in accordance with national standards. In terms of technical performance， it meets the requirements of low loss， low partial discharge， low noise， and high resistance to short-circuit mechanical force. We have a long period of experience in safe operation in China. The design degree is relatively high， and there is no requirement for pouring molds. For non enclosed open ventilation dry-type H-class distribution transformers， simply adding vacuum pressure impregnation equipment is sufficient. Loss and Noise: Research and innovation in the manufacturing technology of dry-type transformers in China mainly focus on optimizing performance parameters， especially in the research of global issues such as transformer loss and sound level. China has achieved many gratifying results， which have significantly reduced the loss (especially no-load loss) and noise of dry-type transformers in China.
