auto mains failure relay for dg sets

Need help for build a simple auto mains failure relay circuit diagram for automation of diesel generator set with self start function

murarichas said:

Need help for build a simple auto mains failure relay circuit diagram for automation of diesel generator set with self start function

Click to expand...

If you use a mains coil voltage relay with the coil connected to the mains, and the NC contacts to the start circuit, when the mains voltage fails the closed contacts will initialize the generator start circuit.