| 摘要 |
The inventive device allows the real power in an electric installation to be changed, in a gradual manner, according to the requirements and the real growth of the charge; the aforementioned characteristic is achieved by connecting more of these devices which are small capacity transformers built with variable powers but following the same principle, the fact of building this equipments with a circular geometry maintains the electric impedance within a very stable range (a circular coil is not deformed as much as a rectangular coil before the short circuit test), thereby being possible to connect these equipments in parallel without having problems due to different impedances. The construction of low impedance transformers reduces production costs and when are connected to already installed transformers it is possible to provide only the required power, allowing the current infrastructure to be used, and achieving a better use of the economical resources used in the electric infrastru cture. The inventive device allows the power missing by effects of the real growth in the supplied charges to be supplied; this is preformed in an affordable manner (a transformer of this type costs a fraction of the cost of a large transformer), it is installed very quickly and easily since the connexion terminals are simultaneously mechanical attachments.
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