PRIMA Power Systems Provides ASCO Automatic Transfer Switches

Joaquina Erdmann

An ATS or Automatic Transfer Switch is a device that is used to reroute the power in certain circumstances. For instance, the PUP or public utility power may go out at establishments during natural disasters, and ATS devices start backup generators. There are tons of issues involved in this kind […]

PRIMA Power Systems Provides ASCO Automatic Transfer Switches

An ATS or Automatic Transfer Switch is a device that is used to reroute the power in certain circumstances. For instance, the PUP or public utility power may go out at establishments during natural disasters, and ATS devices start backup generators. There are tons of issues involved in this kind of shift – not the least of these issues are making decisions about when it is safe to switch back the power.

Automatic Transfer Switches are used to make sure that there is a continuity of power supply, although it can mean various things in various situations. In a standard house, institution, or small business, the continuous power supply may mean that short power interruption can be tolerated.

For instance, if the backup generator is used to help supply backup when the public power fails, there will be a short pause while the personal generator starts up. In health institutions like hospitals, any short interruption may be a matter of life and death.

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There are some ways that ATS can make sure that these interruptions are as short as possible – including batteries to fill from the cessation of the PUP to the start of BGS or backup generator supply. Some of these devices sense temporary spikes and dips in PUP that precedes failure, as well as start-up generators before the complete failure of PUP.

Expert professionals like engineers usually install these devices to switch loads between two different electrical current sources. Some of these things are manual and can be activated when users flip switches, while others, such as ATS, will switch depending on how the source changes. When sources fail, the ATS may go into full effect to help energize a building.

Types of Automated Transfer Switches

In addition to soft-loaded designs, their static transfer switch and close or open transition designs are for various purposes of ATS. Open-transfer (OP) devices, as well as break-before-make devices, operate by stopping contact with one electrical source and creating contact with other sources.

It will prevent unwanted back feeding, using electricity from more than one source that competing against each other, as well as preventing the flow of electricity in unwanted directions. By contrast, closed-transfer (CT) devices or also known as make-before-break switches, will transfer electrical current without causing any forms of interruption.

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It is pretty useful for electrical equipment or structures that rely on their power in ways that even interruptions for a couple of seconds can be a matter of life and death. Unlike their OPS (open-transfer switches) counterpart, close-transfer devices find ways to load electric current to ensure that the generator can supply electricity before breaking connections from one source to another.

These devices are pretty complicated compared to their open counterparts, and users need to monitor the current flow during the transition and divert energy – using bypass capacitors – to help prevent backflows. Professionals refer to various energy sources as synchronized when the voltage difference is less than 5% or have differences in frequency of less than 0.2 Hertz.

Isochronous governors will control the shift in the current. Closed switches make sure that the transfer of electrical current can happen under these circumstances – sometimes within 100 milliseconds. These devices will turn into OTs if the CT is not possible. Lastly, Static Transfer Switches (STS) use semiconductors such as Silicon-controlled rectifiers to help shift electrical sources.

These setups use electron motion energy in semiconductors to allow the shift to happen almost immediately. They are pretty reliable, as well as perform independently of sources available, but they need to be tested to help protect loads from various interruptions in the current frequency.

How does ATS work with more than one generator?

Automated Transfer Switch setups can use more than one generator to help protect electrical operations that happen simultaneously in places that are far from each other. These systems use more than one ASCO automatic transfer switches setups to act as if there were one ATS with a single generator. This setup will let these systems act with more than one generator for purposes of, for instance, different kinds of architectural designs and structures.

Each device needs controllers to ensure that the electricity transfers effectively, efficiently, and safely between utility sources and generators. These things should be tested in directions, as well as distributing electricity accordingly. People need to make sure that they take into consideration even the smallest time differences between different generators and powering different structures. For some operations, even a short time without electricity can harm the purpose of various building designs.

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