Design and Implementation of an Automatic Changeover and Phase Selector System
Abstract
Alternative sources of power like generators and solar panels are inevitable due to the erratic nature of the power supply in Nigeria, which is caused by increased consumer demand and poor infrastructure maintenance, An automatic switching system is necessary to prevent a disruption in the power supply. This study presents an automatic changeover and phase selection system that is coupled to the power supply. In order to properly isolate, switch, and show switching states through the integration of hardware, the design utilizes contactors and timer relays. The automatic phase selector and changeover switch is contactor based; it incorporates contactors, relays and timers to transfer the load to alternative supply when the primary source (public utility) supply fails and also monitoring the public utility when power is restored transferring back the load to the public utility. The switch is tested to operate efficiently within a range ±5% of the nominal voltage of 220V, the switch requires approximately 4 seconds to transition between power supplies. This developed device will significantly enhance power transition time, particularly for low to middle-income families who may find industrial automatic transfer switches expensive due to their high costs
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References
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