Author Topic: How to control your Generator using the transfer switch.  (Read 135 times)

Anton Janovsky (ZR6AIC)

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How to control your Generator using the transfer switch.
« on: December 18, 2018, 07:14:20 am »
How to control your Generator using the transfer switch.
I wanted a way for my Generator to switch over from city power to my generator and when the city power come back up it must automatically switch the Generator off and switch back to city power.
The auto transfer switch had a monitor output that was used to detect when the city power supply is up or down
This monitoring output was used to control the Generator.
This Transfer switch is available from Giga Technology http://www.giga.co.za/ocart/index.php?route=product/product&path=96&product_id=376

My requirement was as follow.

    When my city power is down I will start the Petrol Generator manuely for now.
    Then the Automatic transfer switch will switch over to my generator.
    I the switch over the toggel switch on the surcuite in block diagram and switch of the generator on/off switch.
    The relay will now hold the on/off switch connection in the on position until the city power comes back up and the automatic transfer switch switch back to city power
    Because  the transfer switch switched back to city power the power to the Relay is now disconnected and the Generator stops.
    This system gives me at least a auto stop and transfer back to city power capability
    My next step is to build an auto start and chock configuration for the Generator when City Power goes down.
    This block diagram explain how I did this. Block Diagram of Automatic Power Transfer switch.


Link to github  https://github.com/antonjan/automatic_power_transfer_system