![]() ![]() These options can come in handy to forestall generators, motor controller circuit boards, and other components from overheating or overloading with electricity. This enables the electricity and power to circulate in ways that are more optimal or useful for the needs of the building. #Automatic transfer switch generatorAnother protective measure that engineers use is that they need “cool down” times to forestall the generator from overheating.ĪTS designs sometimes allow for load shedding or changing the priority of other circuits. This protects the generator from overloading. Engineers generally design houses and transfer switches such that the generator remains independent from the system that distributes power throughout the building. Therefore the backup generator would begin to provide power. If your house had an ATS that controlled a backup generator, the ATS would start the generator when a power outage occurred. Once utility power is restored, ATS switches to utility power and commands generator shutdown. When the generator is prepared to provide power, the ATS switches emergency power to the load. When power fails, the automatic transfer switch commands the generator to start. (3)The ATS then commands the generator to shut down when the utility power is restored. (2)When the generator is prepared to perform, the ATS switches the emergency power to the load. This causes the generator to ready itself to provide electric power to the house. (1)When the electric power during a building goes out, the ATS starts the backup generator. One example of a step-by-step process an ATS may use is: They work by preventing the backup generator from being an electric power source before the backup generator is turned on for temporary power. They must also pass the load to the backup generator after that. Automatic Transfer Switch(ATS) Working PrincipleĪn ATS can control when a backup generator depends on the voltage within the primary supply for a building. ![]() They can only connect to a backup power source (engine-generator, backup utility) when it is necessary (primary source failure) or requested (operator command). Most automatic transfer switches, by default, seek connection to the primary power source (utility). The ATS will automatically pass (switch) the load circuit to the other power source (if one is available) if the connected power source fails. The control logic, also known as an automatic controller, is usually microprocessor-based and continuously tracks the electrical parameters (voltage, frequency) of primary and backup power sources. The main function of an ATS is to ensure that electric power is delivered continuously from one of two power sources to a connected load circuit (electrical equipment such as lights, motors, computers, and so on). ![]() How does an Automatic Transfer Switch(ATS) Work?Īn automatic transfer switch (ATS) is a self-acting, intelligent power switching device governed by the dedicated control logic. ![]()
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