Automatic Inverter Supply and Mains Supply Changeover Relay

  
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I have been put forth with this question many times in this blog, how do we add a change over selector switch for automatic toggling of an inverter when AC mains is present and vice versa and also the system must enable automatic switching of the battery charger such that when AC mains is present the inverter battery gets charged and when AC mains
Automatic Inverter Supply and Mains Supply Changeover Relay - schematic

fails, the battery gets connected with the inverter for supplying AC to the load. The configuration should be such that everything takes place automatically and the appliances are never switched OFF, just reverted from inverter AC to Mains AC and vice versa during mains powerfailuresand restorations. So here I am with a simple yet very efficient little relay assembly module which will do all the above functions without letting you know about the implementations, everything is done automatically, silently and with great fluency. The shown position of the relays are in the N/C directions, meaning the relays are not powered, which will obviously be in the absence of the mains AC input. The connected appliances are instantly diverted from the inverter AC to the mains AC within a split second such that the appliances doesnt even blink, giving an impression that nothing had happened and the are kept operative continuously without any interruptions.



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