Wireless Contactor for PV and Standby Generator

[ktech]

Hi, anyone got any idea on pricing and a supplier for a wireless contactor. Basically I need to disconnect the pv on loss of grid prior to the generator kicking in. Unfortunately i'm unable to connect on the grid side of the generator set without digging up a trench.

Thanks.

 

[BruceB]

No doubt wireless is available or can be made up.

A simpler way perhaps would be to put an ordinary contactor on the output of the inverter with the energising coil powered from the inverter side of the contactor and a push button to short the contactor. Once energised the contactor will keep going as long as there is grid voltage. If the grid disappears then the inverter and the contactor will drop out. When power from the grid (or generator) reappears the contactor will not operate until the push button is pressed and will then latch closed until the grid disappears again.

 

[ktech]

Hi Bruce, thanks for that. After my tiny brain got around it sounds like a god idea.