Fundamentals of Automatic Transfer Switches (ATS)

Automatic Transfer Switches (ATS)

What is an automatic transfer switch?

Automatic transfer switches are a reliable source of transferring meaningful load connections. The transfer happens between electrical power sources both in a primary and alternative way. Hospitals, factories, and other data centers requiring constant uptime typically use an alternate power source. They use it in things like a generator or any backup utility when the primary source becomes unavailable.

Automatic transfer switches the working principle

An automatic transfer switch works independently and is an intelligent power switching device governed by the control logic. The primary purpose of an automatic transfer is to perform continuous delivery of power. It functions from either of the two sources to a connected load circuit.

ATS is a convenient system; however, it is also there to prevent minor losses from electrical power and devastate your business. The size of the generator and the ATS is determined based on the needs of the building. The intelligent backup, as well as the power transfer that the automatic transfer switch provides, helps in maintaining business continuity. It also helps prevent the cost that may occur due to fear in environments, such as heavy industries, businesses, or potentially even deadly failures when it comes to hospitals.

The automatic controller or the control logic is microprocessor-based. It continuously monitors the voltage and frequency of both the power sources that are the primary and alternate power sources. If the connected power source fails, the ATS will transfer the lower circuit to the other power to be available. Most ATS seeks connection to the primary utility by default. However, they will connect to the alternate source of energy when required or requested to do so. This principle is the automatic transfer switch working principle.

Types of Automatic Transfer Switches:

There are four types of automatic transfer switches systems that you can install depending on your needs. They all have the same ultimate goal of maintaining safety when it comes to electricity. However, each of these systems meets various criteria, and you can use it for different applications. Therefore, you should consult a professional to determine what type of system suits your building the best.

(1) Open Transition ATS:

Many people use the break before make a switch or the open transition in systems. It helps to handle the brief interruption in power. In contrast, they switch between utility and backup power. The delay is that of a second long but helps in a safe transfer. It ensures that no utility of the people around the device is at risk. There is also a variation of this type of ATS known as a programmed transition switch. It pauses between utility and generator power, allowing the residual voltage of circuits to decay before restoring power.

(2) Closed Transition ATS: 

You can use this type of system in spaces where manufacturers don’t tolerate even a slight interruption. Closed transition ATS includes internal procedures that will allow both the power sources to be on simultaneously. You can enable a seamless switchover as long as it maintains the safety standards. However, considering the complexity of these systems, it is even more expensive than the available transitions systems.

(3) Soft Loading Transfer Switch: 

Soft loading transfers are similar to that of a closed transition ATS. However, it comes with adjusting to the number of loads that it handles based on the situation. This capability comes with an extra charge. Although, it allows businesses to have higher flexibility against situations that require more backup power.

(4) Bypass Isolation ATS: 

This system is the most complicated but comes with the highest capability. It includes two systems that typically run parallel to each other, allowing for inspection and maintenance. You can generally see such setups in the most sensitive spaces. This system includes life support systems, air traffic control, telecommunications, and other priority setups.

Automatic Transfer Switch Diagram

automatic transfer switch

GEYA: Your Best Automatic Transfer Switch (ATS) Manufacturer

GEYA is one of the top Automatic Transfer Switch Manufacturers. They provide ATF for solar photovoltaic systems.

W2R – 2P Automatic Transfer Switch for PV: 

A series of ATS is suitable for emergency power systems. You can use any power system having 400 voltages, 68 with AC of 50 V or 60 Hz. It is a compact, reliable, and durable product that can install easily. You can use it on multiple occasions that do not allow the failure of power. Furthermore, you can operate the ATS manually as well as electrical leave. You can also use this switch for home track TV installation.

Along with W2R – 2P ATS, GEYA also provides W2R – 3P ATS and a W2R – 4P Automatic switch; all have great features and come with varied voltage and AC rated currents of varied Hz.

GEYA Backup Generator Automatic Transfer Switch comes in a robust structure and has reliable transferability. The switches are easy to install as well as maintain and are highly durable as well. It can meet the different installation requirements of clients due to the compact size of the product. GEYA ensures The continuity, safety, and reliability of the power supply. You can also use it on several occasions where power failure should not be allowed. You can use the automatic transfer switch for the generator with an inverter as well.

GEYA has proper installation and wiring protocols that they follow:

  • Before the installation and wiring, the professionals must go through the manual of the automatic transfers, which you must check. You will have to check the flexibility of the operation. Also, you must check the load of the standard and alternate power sources.
  • The safety distance to be maintained should not be less than the distance specified in the manual.
  • You must check the control power supply voltage.
  • The ETS should equip with a suitable automatic transfer switch control circuit breaker based on the installation requirements. You must ensure the safety of equipment and personnel at all times.
  • You can refer to the diagram of how to install an ATS on the GEYA site.

Before choosing a system, you should understand the principle of an ATS. Also, you need to understand which one will suit your building the best.

Shopping cart


No products in the cart.

Continue Shopping
Something isn’t Clear?

Feel free to contact me, and I will be more than happy to answer all of your questions.