Industries require three phases power to run their machinery. In this research, a 3phase automatic power change over switch has been designed and. Automatic phase selection block diagram of automatic phase selector system page 4 the main blocks of this project are. System design analysis, components used in the design and construction of the automatic three phase selector, the design topology, the power supply block, the relays switches, design of the circuit, work of lm 741 comparator, comparator using operational amplifier and.
The design and construction of a three phase automatic phase. Automatic changeover shifts to generator load automatically after the absent of all three phases of mains and when the generator is started. Pdf this project work is on the design and construction of automatic phase selector and changeover switch for 3phase power supply. Automatic phase changer automatic three phase changer.
Automatic phase selector, power failure, single phase load. Automatic three phase selector with power factor improvement. According to the block diagram the three phase supply is given to the change over. The block diagram of the project and design aspect of independent modules is considered. Automatic phase selector free download as powerpoint presentation. Pdf design and simulation of automatic phase selector and. Simulation of an automatic phase changer apc circuit was performed in this project. It hampers the production of industry, construction work of new plants and buildings.
The system involves automatic changeover between the utility power supply and an auxiliary power supply generator. We manufacture high quality auto phase changer, which is automatic and works without any interruption. The automatic three phase selector is a system that compares the voltage of the other two phases using a comparator circuit and if the voltages are not available, the system changes over from public supply to generator. Design methodology the methods and procedures involved in the design and fabrication of the automatic transfer switch with three phase selector that gives a single output involves the following. Design and construction of automatic three phase power. Automatic three phase selector with power factor improvement is designed to solve these two issues so ef. Detailed methodology to be used for carrying out the project. Automation 3 phase selector switch has an input of 3 phases from phcn but has one output that supply current to the load. The designed circuit and the truth table for the three phase power selector are shown in figure 3 and table 1 respectively. The 3 phase automatic voltage selector system uses reliable electricalelectronics components such as relay transformers, contactor, diode capacitor, resistor and other switching component. How to use the 3 phase change over switch in my home quora. The automatic phase changer design was implemented in three units are as given. Introduction the project is designed to provide uninterrupted ac mains supply i.
The operation of this device is that when there is a failure in any of the each line thereby leading to a no output voltage, it select automatically to other phase without time delay. Design and construction of automatic phase selector chapter one introductionas the growing population of human race widens the gulf between energy supply and energy demand, the imbalance in energy availability sent researchers into excavating for a way of settling this age long squabble. The basic aim of the design and construction of this three phase automatic phase selector is to demonstrate how contactors can be used to switch in between three lines or phases e. Automatic phase change gives the output on all three phase if either 1 phase is present and reselect its original phase after the resumption all all phases.
The unit offers following protections along with 3 digit display showing rn,yn,bn voltages in scanning mode with. Chapter four of design and construction of automatic phase selector contains. Design and construction of automatic three phase power system. A country like nigeria, where total power generation is less than one quarter of total demand, means of augmentation and smooth operation cannot be over emphasized. Nov 25, 2015 basically, there could be two type of phase changing device, one could be an automated one with a digital numeric relay for automatic change over and the another one is a basic manual one which have to be operated by a human. Keywords automatic phase selector, power failure, single phase load.
Automatic phase selector from any available phase youtube. Auto selection of any available phase, in 3 phase supply. Design of automatic phase selector from any available three. It is an electrical circuit capable of comparing three phases and switching over of the phases automatically. Manufacturer of automatic phase selector three phase automatic phase selector, electronic automatic phase selector offered by roshan engineering corporation, chennai, tamil nadu. A lasting solution is vested on alternative use of the renewable energy source, a project that is yet to be. So maximum capacity is 12a calculation of power supply there must be some information available in design of transformer 1 p out. Design and implementation of a 3phase automatic power change. Constant supply of power is the wheel of growth to any nations economy. Abstract in three phase equipments, if supply voltage is low in any of the one phase.
Design and implementation of a 3phase automatic power changeover switch atser a. Instant automatic phase change when any phase fails. It is also shows the working and operation for different changeover switches wiring connections like, single phase manual changeover switch with generator, three phase manual transfer switch connection with generator as well as single phase and three phase automatic transfer switches connections to the 1 and 3 phase generators and main fuse board. Automatic active phase selector 7154 words bartleby. Auto selection of any available phase, in 3 phase supply system. Electric transfer switch that switches the load between mains and gen. Automatic phase selector three phase automatic phase. Mbaocha christian says in the paper smart phase changeover system with at89c52 microcontroller.
However, this paper focuses on the design of a phase selector using automatic. Automatic phase selector controllers the universal automatic electronic phase switch singlephase automatic throwover breaker is designed to supply an industrial appliance single phase 220v50hz load from three phase four wire mains 3x380 n in order to maintain uninterrupted power supply of essential singlephase loads and protect them against unallowable voltage variations in the mains. Automatic source changeover with current limiter havells india. The 3 phase automatic selector is a device that does the automatic switching of a three phase supply without human intervention. The operation of this device is that when there is a failure in any of the each line thereby leading to a no output voltage, it select automatically to. Automatic 3 phase selector switch is a replacement of 3 phase manual change over cut fuse from one cut out to another.
The design and construction of a three phase automatic. The single phase supply is selected automatically from three phases supply. This is a technical report presented on the design and construction of an automatic three phase selector. It provides a means of switching from one phase of ac mains to. Pdf this project work is on the design and construction of automatic phase selector and changeover switch for 3 phase power supply. Automatic active phase selector for single phase load from. Index termsactive phase selector, arm 7 microcontroller, single phase supply, etc. The authors in 4 designed and implemented a three phase automatic change over switch with generator control mechanism to provide an automatic switching mechanism that transfers the consumer.
We aimed at presenting a practical aspect of the subject and then providing the argument necessary for a thorough understanding. It can be overcome by using a backup power supply such as a generator. Phase automatic selector is a device that does the automatic switching of a three phase. Download as pptx, pdf, txt or read online from scribd. Similarly, the automatic phase changing of the remaining two phases, through yellow phase and blue phase, b works accordingly. Conclusion the automatic phase selector was designed and constructed. This is achieved by automatic changeover of the load from the missing phase to the next available phase in a 3 phase system. Digital automatic phase selector relays, manufacturer. The circuit diagram of the designed three phase power selector input red phase, r input yellow phase, y input blue phase, b output voltage 0 no supply 1 0 phase r 0 1 0 phase y 0 1 phase b 0 1 phase y or b 1 0 phase r or b 1 1 0 phase r or y 1 phase r or y or b iv. We introduce auto phase selector unit for those equipment whose supply is single phase. Automatic phase selector controllers automatic electronic.
Automatic phase selection page 3 hardware description introduction. This instrument is capable of producing 3 phase ac voltage with phase shifting arrangement between the phases simultaneously. Automatic phase changer automatic phase changer cum. Finally, it covers the importance on the need of automatic three phase selector and contributions toward a greater sharing load balance and a better three phase power distribution. Pdf design of automatic phase selector from any available. Apr 26, 2017 for more information please visit to 8421218893. So in this project our aim is to design a circuit called automatic three phase changer or selector. This project work is on the design and construction of automatic phase selector and changeover switch for 3 phase power supply. Automatic phase selector controllers the universal automatic electronic phase switch single phase automatic throwover breaker is designed to supply an industrial appliance single phase 220v50hz load from three phase four wire mains 3x380 n in order to maintain uninterrupted power supply of essential single phase loads and protect them against unallowable voltage variations in the mains. Din rail mounting phase selector is the protection relay developed by proton power control to provide automatic switching between the r,y,b phases for providing one of the live phase supply uninterruptedly. The automatic three phase power system selector was designed and constructed. Mar 01, 2017 single phase to 3 phase converter, choosing a backup generator plus 3 legal house connection options transfer switch and more duration. A rotary switch will be provided to select the phase angle in lead or lag in steps of 15 degree.
Pdf design and simulation of automatic phase selector. The automatic transfer switch embedded with a phase selector comprises of a. Generally distribution of electricity use in 3 phases 4wire system. The scope of the project covers aspects like the features of automatic three phase selector, its applications, and its operations. But it is cost effective and also time consuming as. Automatic electronic healthy phase selection relay pef301 features. It automatically switches to the phase in which the power is available. In the construction work, an ordinary level knowledge of electronics principles are observed.
A microcontroller based automatic 3phase selector for load. In designing it, various electrical and electronic components were used. In three phase power system 3 inputs of apc circuit are connected to three. Design and construction of automatic three phase selector.
Design and construction of automatic phase selector project. The automatic transfer switch embedded with a phase selector comprises of a monitoring unit which monitors the. Explanation of the working and operation of star delta. Some of them require continuous \ uninterrupted power to maintain their data. We offer wide range of automatic phase changers, which are manufactured by qualified and skilled professionals and available at very reasonable prices. It is useful in homes to militate against faults arising from overloading on a particular phase or from outright phase off. Solomon3 1, 2, 3department of physics, college of science university of agriculture, nigeria.
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