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The paper analyses the power quality in power substations from residential and educational buildings (campus university). Measurements were performed in two days, one in a weekday, and one in a weekend, to highlight differences. Measurements in the power substation were performed using power quality analyser. Electrical measurements were performed for voltages and currents spectra, Fresnel diagrams,...
In this paper is analysed the power quality phenomena that can occur in a plant producing wood-based panels. In the measurements was used PowerLogic ION7650, connected in power substation (110/20 kV). Reports provided by analyser showed the electromagnetic disturbances that could adversely affect the operation of electrical equipment from analysed plant. Experimental results allowed the identification...
The paper proposes an automation heating and pumping system for water, using Zelio PLC, for a cloakroom from a facility plant. PLC control installation replaces a classical control installation, less reliable, with contacts and relays. For control of automation heating and pumping system for water using a PLC Zelio SR3B261BD, 24V DC type, and one extension module connected to PLC, SR3XT141BD, 24V...
The article presents an industrial application from a plant regarding the automatic movement of some trucks transporting building materials from one sector to another. It presents an alternative solution to conventional control installation of trucks (with electromechanical relays, timers) with a modern control installation made with PLC, static frequency converter, and touch panel.
Paper presents a practical solution to improve power factor in a textile plant substation using a power factor controller with six capacitors banks. A wireless signaling installation was developed to display the capacitor banks connection to the substation's grid. The power factor controller was implemented into practice. Experimental measurements were made with a power quality analyzer operating...
The paper establishes the analytical relationship of the start time for a work machine with constant torque resistance driven by a three-phase cage induction motor powered directly from the grid. The medium torque of the induction motor was obtained by integrating the simplified Kloss formula from the natural mechanical characteristic of the driving motor. It is used the medium torque of the motor,...
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