How Can a Backup Generator Automatically Support Two Different 3-Phase Grids?

[abdelhamid]

we are planning to install one backup generator to secure two differenr grids 3 phase each.
how shall be the connection that gurantee if any source of the two grids is off, the generator will automatically start up and take the load??

 

[dlgoff]

You would need a http://en.wikipedia.org/wiki/Transfer_switch" .

For example: http://www.apelectric.com/ASCO-300-Series-200A-Automatic-Transfer-Switch-p/asco-300-200a.htm?gdftrk=gdfV21065_a_7c276_a_7c712_a_7cASCO_d_300_d_200A"