Compared to the high and low voltage prefabricated transformer

Combined Transformer (also known as the American box changed) in the country has been running more than ten years, has developed into a mature combination of power distribution equipment. Compared to the high and low voltage prefabricated transformer (ie European box changes), combined transformer has its distinct advantages, of course, there are some downsides. The origin of the current domestic  circuit breakers  low-voltage modular power distribution unit is generally divided into two types:  power transformers  Substation (ie European box changes) and modular  Circuit breaker (ie American box changed). European box changes from the 1970s into China, dominate the domestic market, to the 1990s, is called American box combined power distribution unit to enter the Chinese market. In the United States, the American box is an oil-immersed distribution transformers, known as the Taiwan-mounted distribution transformers.