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Home  >  Volume 30 (2015)

Design and Construction of an Automatic Three-Phase Change over Voltage Stabilizer by Oghenerhoro Ovie and Onyekannankea C. Justine., pp 389 – 398
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This paper presents the design and construction of an automatic three-phase change over voltage regulator capable of maintaining constant output voltage of 220Vwith current range of 5-12A. Its output power rating is about 3200W. The input is capable of searching and selecting a live phase from the mains voltage source of readily available power transmission line. The device can also amplify input voltage as low as 50V a.c to a constant 220V a.c. Furthermore, if no power is sensed, from the three live phases, that is if all the phases are in OFF STATE, the device auto-connect to a power generating plant.