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15 2020-09: Comparison of toroidal transformer, square transformer and switching power supply
There are several types of transformers. The types of small transformers include toroidal transformers, square transformers and switching power supplies. I believe that many customers are troubled by how to choose these types of transformers. Shengyuan Transformer has in-depth research in the field of toroidal transformers and waterproof transformers. Today, guided by professional technical engineers, the editor will describe them one by one for everyone. Toroidal transformer Toroidal transformer A, efficiency 50W The operating efficiency of the toroidal transformer is 86%-90%, while the operating efficiency of the 50W square transformer is 80-84%. The working efficiency of 400W toroidal transformer is 90-93%,...

15 2020-09: Analysis of common faults of transformers and their solutions
Transformer failure situation When the staff on duty at the transformer substation finds an abnormal phenomenon in the operation of the transformer, they should try to eliminate it as soon as possible, and immediately report to the superior and make a record. When a serious fault of the transformer is found, the transformer should be shut down without reporting to the dispatcher. If there is a spare transformer in operation, put it into operation as soon as possible, and then report to the dispatch and leadership. Such as: 1. The sound of the transformer is obviously increased, which is very abnormal, and there is a popping sound inside. 2. Severe oil leakage or fuel injection causes the oil level to drop below the design limit of the oil level. 3. The casing has serious damage and discharge. 4. The transformer is smoking and catching fire. transformer...

15 2020-09: Anti-theft measures for base station transformers
In recent years, with the rapid development of mobile communication networks, the amount of base station construction has been much higher than before, and remote independent base stations have repeatedly become the site of choice for criminals to commit theft. We further clarified the anti-theft ideas through the analysis of stolen base stations. From the analysis of the geographical location of the stolen sites, all the stolen sites are remote and independent base stations, which are usually unattended; from the analysis of the time of the theft, most of the cases occurred in the early morning of the night; from the analysis of the stolen components, all were transformer copper cores It was taken away without any anti-theft measures. From the above analysis, the professional maintenance staff of our company prescribe the right medicine and adopt the following scheme: ...

15 2020-09: Why is the sound loud when the transformer is no-load?
Why is the sound louder at no load than at full load? It is because there is no load on the second time at no load, which causes the primary voltage to be slightly higher. Generally, the rated voltage is 10kV, and the actual voltage may be about 10.5kV at no load; the core magnetic density is due to the voltage increase High, larger than the normal design value. B=45*et/S (et is the design turn potential, the number of turns does not change, the no-load voltage increases, so that et increases, causing B to increase); the iron core magnetic density is high, which leads to The large hysteresis vibration of the iron core causes the sound to be louder at no-load; this is the main factor! (The effect is that the no-load current increases) The no-load current is a secondary cause, and the large no-load current reflects... .

15 2020-09: Anti-theft measures for base station transformers
In recent years, with the rapid development of mobile communication networks, the amount of base station construction has been much higher than before, and remote independent base stations have repeatedly become the site of choice for criminals to commit theft. We further clarified the anti-theft ideas through the analysis of stolen base stations. From the analysis of the geographical location of the stolen sites, all the stolen sites are remote and independent base stations, which are usually unattended; from the analysis of the time of the theft, most of the cases occurred in the early morning of the night; from the analysis of the stolen components, all were transformer copper cores It was taken away without any anti-theft measures. From the above analysis, the professional maintenance staff of our company prescribe the right medicine and adopt the following scheme: ...

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