Automatic changeover switch

Automatic changeover switch 

IN THIS PAGE ALL ABOUT AUTOMATIC CHANGEOVER SWITCH INCLUDING WIRING DIAGRAM, PRICE & APPLICATION NOTES

How automatic changeover switches work

Learn how to make Automatic Changeover Switch panels. The book describes in simple words and drawings the basic principles to make generator control panels. The guide includes step-by-step examples in a way that you will be able to make panels in the size 15 up to 200kVA. Once you purchase the book, you will receive free updates and additional information to keep you update on the STATE-OF-ART products.

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An automatic changeover switch for generator together with your backup generator ensures electrical power to your business premises in case of power outage . As shown in the automatic changeover switch generator circuit diagram there are two paths: GENERATOR LOAD (BLU color) and POWER UTILITY LOAD (ORANGE color). Does not exist the connection GENERATOR-POWER UTILITY. As a matter of fact when the utility power is not available the transfer switch transfers the load to the generator, and then transfers it back once utility power has been restored. The controller  that governs the system, ensures that all this is done smoothly and with a short downtime.  The automatic changeover switch for generator comes with an automatic transfer switch controller, which monitors the parameters of power and detects when there are any electrical parameter out of the preset limit (e.g. voltage lower than 100 V, frequency lower that 55 Hz, etc).  The muscle of the systems is an automatic changeover switch using contactors of an appropriate size. The controller will ...............READ MORE

 AUTOMATIC TRANSFER SWITCH CONTROLLER TUTORIAL

[1]- Automatic Transfer Switch Controller   [2]- The Power utility connected via protection FUSES to the ATS controller   [3]- The backup generator connected via protection FUSES to the ATS controller   [4]- The Generator Auto Start Module   [5]- The Changeover Switch made of two contactors   [6]- Auxiliary relays to drive the contactors   [7]- Auxiliary relays to drive the Generator Auto Start   [8]- The Power Utility (sometimes called ‘MAINS’)   [9]- The Generator Power Connections (usually 3-phase).

Automatic changeover switch using contactors

The core of a changeover switch is made by using two contactors. It is about two, electrically controlled, circuit breakers that are not allowed to close simultaneously. The two contactors are mechanically joined together with a ‘mechanical interlock’ mechanism that will not allow to both relays to be in a ‘closed position’. In the automatic changeover switch for generator circuit diagram, the contactors of  READ MORE............

Automatic Changeover Switch Price

 IN THIS SECTION YOU CAN SEE THE AUTOMATIC CHANGEOVER SWITCH PRICE OF THE MOST USED SIZES 

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GSM GPRS Based Automatic Changeover Switch

GSM based automatic changeover switch used for general purposes automatic transfer switch panels

The Be142 automatic changeover switch controller is the ideal solution for general purposes applications where a GSM monitoring is mandatory.  This Automatic Changeover Switch is based on the Be142 automatic controller & BE16 SMS GSM Gateway. These generator control panels are designed for 15-160kVA standby generators. You ca monitor all functions by means of simple syntax SMS typed on your mobile phone. You will receive SMS notifications about the status of the system, fuel level of the engine, power utility failure and so on. By typing on your mobile phone simple syntax SMS you can start the generator from a remote location. By using a special SMS, you can switch the load as well.

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View of an automatic changeover switch assembled into a panel

Example and internal view of a 60kVA ATS panel with automatic changeover switch using contactors  

In this image you can see a practical example of an automatic changeover switch wired into a 60kVA Automatic Transfer Switch (or ATS if you will) Control Panel. The core of the automation system is the Be142 ATS controller [1] that automatically drives the pilot relays [2[ & [3]. The automatic changeover switch is made by contactors [4] & [5] together with its owmn auxiliary contacts [6]. In the picture you can see the ancillary components like terminal block, battery charger, current transformer, fuses an so on.

 

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