title: ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð°ÑÑÐ¾ÑÐµÐ½ÐºÐ°Ð¼Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Designing a power supply system for the management of aeration tanks
Creators: name: ÐÐµÐ½Ð´ÑÑÑÐµÐ², ÐÐ¸ÑÐ¸Ð»Ð»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð­Ð»ÐµÐºÑÑÐ¾ÑÐ½ÐµÑÐ³ÐµÑÐ¸ÐºÐ°
ÐÐ°Ð±ÐµÐ»Ð¸
ÐÑÐºÐ»ÑÑÐ°ÑÐµÐ»Ð¸
ÐÐ¾Ð´Ð¾Ð¾ÑÐ¸ÑÑÐ½ÑÐµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð¸ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ
Ð°ÑÑÐ¾ÑÐµÐ½Ðº
ÑÐµÐ»ÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ
aerotank
selectivity

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description: In conclusion, basic single-line power supply circuits were built, the influence of the feed currents of asynchronous motors during a short circuit on the choice of circuit breakers was assessed. The subject of the final qualifying work: "Designing a power supply system for the management of aeration tanks." This work is devoted to the design of a power supply system with a voltage class of 0.4 kV, the selection of live parts and the selection of switching equipment. The facilities of the second stage of the treatment of the water treatment plant, namely the technological equipment of the aeration tanks, are used as the projected object. In the course of the work, a structural diagram of power supply from the existing transformer substation was drawn up. Further, the calculation of electrical loads was carried out in accordance with the instructions of the regulatory documentation. According to the results of the calculation of the loads, cables of the required cross-section were selected. The cables were tested for long-term permissible current, economic cross-section, voltage losses, thermal resistance and non-combustion. The next step was the calculation of short-circuit currents, taking into account the feed currents of asynchronous motors in order to assess their influence on the further choice of switching equipment. The choice of circuit breakers as switching equipment was carried out in accordance with the rules for the installation of electrical installations. The selective work was also checked.