| 摘要 |
The invention relates to EMC protection for a distribution transformer to eliminate health-endangering effects of magnetic fields in the vicinity of a dry-type transformer. According to the invention, a uniform and substantially seamless metal jacket (4) which damps the magnetic fields is disposed over a distribution transformer (1) and all of its four sides, substantially along their entire height, enclosing the distribution transformer from a small distance. Further, closed air circulation is provided between the metal jacket and the transformer, in which case a heat exchanger (6) is provided in connection with the metal jacket to cool the air circulation. |
