grid connected system w/ no grid power question

 I'm new to this stuff but I've started reading about it.  One question I
have is if I buy\install a grid connected system and I have no batteries
connected, can I still use the PV generated power when the grid goes down?
Or can this only be done with batteries?

thanks,

mike
florida

 

  Grid tied inverters have "islanding circuits" that isolate the =
inverter
from the grid in case of grid power failure. I don't know of any that
provide UPS (uninteruptable power supply) features. Even if they did,
you would probably want a battery bank for transient load conditions.

 My unit has 3KW of UPS and Grid-tie and uses batteries when needed.



question I

batteries

  Grid tied inverters have "islanding circuits" that isolate the
inverter
from the grid in case of grid power failure. I don't know of any that
provide UPS (uninteruptable power supply) features. Even if they did,
you would probably want a battery bank for transient load conditions.

 Mike Payne wrote:

you need a battery/grid system. a grid only system shuts down if there
is no grid.


--
Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html

 Here is a unit.

http://www.beaconpower.com/products/SolarInverterSystems/docs/SmartPower_M5_0704_lowres.pdf