Designing a Two-Source Power System with Automatic Switchover

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SUMMARY

The discussion centers on designing a two-source power system that automatically switches between a 120V inverter and a normal AC source from a sticking contact. The user intends for the system to prioritize the normal AC source and switch to the inverter only when the normal source is unavailable. The solution identified involves using a contactor to facilitate this automatic switchover, ensuring safe and efficient operation of the power system.

PREREQUISITES
  • Understanding of 120V AC power systems
  • Knowledge of contactors and their operation
  • Familiarity with relay circuits
  • Basic electrical safety practices
NEXT STEPS
  • Research contactor specifications for 120V applications
  • Learn about relay circuit design for automatic switching
  • Explore safety measures for working with AC power
  • Investigate low DC control methods for contactor operation
USEFUL FOR

Electrical engineers, hobbyists designing power systems, and anyone interested in automatic power source switching solutions.

newbie123
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Hello,

I have two 120V sources. One is inverter and one is normal AC from sticking contact. And i want only one of them as output. Output will be from inverter or 120V from sticking contact.

I want normal AC from sticking contact to be active. If it is shutdown so i want output will automatically switched over to inverter. And if 120V from sticking contact is back so i want it automatically switch to 120V sticking contact.

I have thinked to use relays, but need some help. How to design it out.

Thanks
 
Engineering news on Phys.org
Playing with 120V ac is pretty dangerous, you better watch out. Does it need to be controlled by a low DC current or will a switch work?
 
Hi,

I have found out. I neeed a contactor to do this work. Thanks
 

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