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Developments in the telecommunication equipment require new centralized power plant policy. The paper describes the new type of power plant chosen by SIP, Italian Telephone Company, to face the telecomuunication equipment present and future requirements. A description of the plant is given together with the results of the first years of operation.
The paper describes some devices specially developed for the new type of centralized power plants for telecommunication equipment used by SIP, Italian Telephone Company. The remote rectifier's output power limitation device is of great usefulness in the power rating of the primary power plant, in particular of emergency generating sets. The selective supervising devices are an integral part of the...
Technical progresses in the field of power transistor permit now a direct switching of AC mains voltage. It is the main object of this paper to present a modular rectifying set, including two to five switching rectifiers. The main technical points concerning this type of telecommunication power plant will be discussed, thas is the electromagnetic compatibility between these materials and the surrounding...
Booster DC to DC converters operating with 20 kHz conversion frequency perform rapid regulation that make them very well suited to use as active filters for attenuation of low frequency noise. Booster converters with such filtering qualities are beeing used in a new series of 48 V DC power plants. The noise on the output is kept well below the limits that are specified in the CCITT-recommendations.
In this paper an attempt is made to derive some major future trends for telecommunication power plants out of technological progress and some of the worldwide political processes. The main stress is laid on trends of some degree of universal applicability and thus detailed analysis of e.g. circuit solutions is avoided. General trends, system trends and trends for system components like rectifiers,...
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