How to make (build) ATS (Automatic Transfer Switch) ?

mister_rf said:

Here you find attached a diagram using 12V relays and step-down transformers. In practice there are many important details/timings related to the generator start / stop particular procedures to fix in order to get a fully functional circuit. ;-)

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mister_rf said:

Frankly, I don’t know. :-D
There are many possibilities to build such a project, you can use the high quality components on the market (!!) and the price will go high, or just using some second hand parts and obtaining a lower costs.
Just in case we may start preparing a shopping list:
2 24V/16A-25A Main contactors
3 230Vac/24Vac transformers
4 1 amp rectifier bridge
1 24V relay
1 temp relay
1 DPDT switch
12 terminals block
1 box
Some capacitors/resistors/fuses (fuses= very important details missing on the above diagram :roll: )

Labor work is also very difficult to estimate, usually such a DIY project will be for free (if you have enough time to spend for), or you may end up paying someone for a full day of work.

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phatcreators said:

so , what about the fuses ? As they're missing in the above provided diagram ..... so where to put them & of what capacity ?

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