The difference between European-style transformers and American-style transformers is that they have different compositions, different high-voltage parts, and different applications.
1. Different composition: American transformer, high voltage protection consists of plug in fuse, backup fuse + load switch; European transformer, high voltage protection according to load switching frequency, select pressure gas type, vacuum and SF6 load switch + fuse; capacity More flexible.
2, the high voltage part is different: the American transformer has only two high-voltage wiring modes, ring network (dual power supply) or terminal power supply. The European transformer is made up of independent high voltage units, and the form can be customized according to customer requirements. Since the European transformers are independent of each functional unit, each unit (high voltage, transformer, low voltage) can be customized according to user requirements. Due to the high voltage limit and the small size of the American transformer, the function is far less flexible than the European transformer. But it is much cheaper than a European transformer.
3. Different applications: American transformers are suitable for the use of multi-storey houses and other unimportant buildings with relatively low power requirements. According to our actual use, the American box is equipped with a small ring switch station, which is fully applicable to the power supply requirements of multi-storey residential buildings. Because it is a failure of the box, it has little impact on the residents, but it is not suitable for small high-rises and high-rises.
European-style transformers are used for outdoor prefabricated substation equipment that is accessible to the public with a primary side rated voltage of 12kV, a transformer with a maximum capacity of 1600kVA, and a working frequency of no more than 50Hz. The substation is externally connected by a cable and can be operated from inside or outside it. It is used in urban high-rise buildings, urban and rural buildings, residential quarters, high-tech development zones, small and medium-sized factories, mine oil fields, and temporary construction points, etc., for the distribution and distribution of electrical energy in the distribution system.