![]() The difference between an automatic transfer switch and a static transfer switch includes the following. If there is not enough frequency, an alarm will sound and the automatic transfer switch will begin to switch over to the standby generator Automatic Transfer Switch Vs Static Transfer Switch The outgoing line is monitored by a frequency sensor that detects whether or not there is enough frequency coming out of the system to operate safely. If there is not enough voltage, an alarm will sound and the automatic transfer switch will begin to switch over to the standby generator. The incoming line is monitored by a voltage sensor that detects whether or not there is enough voltage coming into the system to operate safely. The automatic transfer switch will detect a loss of power by monitoring both incoming and outgoing lines. Contactor ATS How an Automatic Transfer Switch detects a Power Loss ? ![]() Generally, these switches are the most economical. As compared to the circuit breakers, it operates very fast and also decreases transfer time. The contactor type ATS has a simple design, mechanically seized & operated electrically. Generally, these switches depend on 3-pole or 4-pole low voltage contactors. This kind of automatic transfer switch is used for making & withstanding short-circuit currents but not used for breaking short-circuit currents. As compared to contactor ATS, these switches are more expensive. This type of switch mainly includes two interlocked CBs, thus simply one breaker can be closed at any time. These accessories must be used within the circuit. Generally, these switches are connected by numerous ACBs or MCCBs with an installer. The CB automatic transfer switches are used for making, breaking & withstanding short circuit currents. Whenever this switch detects a power failure at home, then it supplies generator power to your home, after that it detects the power when it is restored & gives utility power back to your home. Once this switch is connected, then they can switch automatically between utility power & generator power. In the entire electrical system, this switch works like the brain. Generally, the flow of electricity is from the utility to the main electrical system of your home, where it gives power to all your circuits. Once the voltage drops then it is detected by a solid-state relay device & produces a signal to begin the generator.Īn ATS switch plays a key role in connecting the standby generator to your home. This switch functions like a monitor if the incoming supply is smooth & above a particular level. These switches include a set of relays as well as solid-state devices that are mounted to check & control the incoming voltage. This switch is an essential component in an EPSS (emergency power supply system). ![]() The working principle of an automatic transfer switch is to switch electrical energy between both primary & backup power sources automatically without human interference. ![]() Automatic Transfer Switch Working Principle ![]()
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