The Design And Construction Of An Under And Over Voltage Protection System (PDF/DOC)
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Overvoltage happens in a condition where the voltage is increased and exceed its design limit. This situation may lead to harmful damage to machines or related equipment that connected to the system. Overvoltage can exist in a form of transient, voltage spike or permanent, depending on its duration. Along with increasing importance of power quality the effect of overvoltage protection to short interruptions and voltage dips is of great […]
ABSTRACT The power line fluctuations and cut-offs causes damages to electrical appliances connected to the line. It is more serious in the case of domestic appliances like fridge and air conditioners. If a fridge is operated on low voltage, excessive current flows through the motor, which heats up, and get damaged. High and low voltage cut off is a device designed to protect electrical appliances from over voltage as well as under vol […]
ABSTRACT This paper presents a new design for over/under voltage (OV/UV) protection scheme using Arduino microcontroller. The protection scheme is designed to protect the solid-state transformer (SST) branch of a Future Renewable Electric Energy Delivery and Management (FREEDM) system. It is used as backup protection for the instantaneous, momentary and temporary voltage fluctuation of distribution medium voltage loop. Very simple, us […]
ABSTRACT Increase in voltage for the very short time in power system is called as the over voltage. The voltage stress caused by over voltage can damage the lines and equipment’s connected to the system. There are two types of causes of over voltage in power system – over voltage due to external causes and over voltage due to internal causes. Over voltages can be generated at high frequency (load switching and lightning), medium frequ […]
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