We are doing a large project and unfortunately the building that we are installing the PV system on is fed by a small spot network in a large metro area. The utility is requiring that our system never export more than 155 kW and in order to guarantee this they are requiring us to install a 67 directional current element relay and a 32 directional power element relay that will disconnect the PV system if power export ever exceeds 155 kW.
I have never run into this before and don't know anything about these relays, how they work and how they are installed. Has anyone run into this before? Does anyone know where I can learn more about how these relays work and where & how to install them? I'm at a bit of a loss right now on where to find information on this subject. Any help pointing me in the right direction is much appreciated!
I have never run into this before and don't know anything about these relays, how they work and how they are installed. Has anyone run into this before? Does anyone know where I can learn more about how these relays work and where & how to install them? I'm at a bit of a loss right now on where to find information on this subject. Any help pointing me in the right direction is much appreciated!