Hi
I know that in many places, we are told to always power up the charge controller with a battery first, before connecting PV panels to it.
Ok, that makes sense, and I understand why.
My question is, what happens in a running system when the battery dies or is otherwise cut off? The charge controller is left connected to
the PVs. I have not seen how to handle this situation, given that the charge controller should always be connected to battery first.
I can think of several things to do or other scenarios:
1. use some sort of tied breaker so that if the breaker from the battery trips, it force-trips the second breaker on the link from the PVs, thus disconnecting the charge controller completely.
2. Assume the risk and (potentially) get a new charge controller.
3. Perhaps (many?) charge controllers have a way of dealing with this situation, with some sort of shutdown sequence that electrically disconnects the PVs or provides some sort of shielding when the battery dies.
I could also have missed such a discussion. (I am new here).
Any thoughts? Thank you.
-Chris
I know that in many places, we are told to always power up the charge controller with a battery first, before connecting PV panels to it.
Ok, that makes sense, and I understand why.
My question is, what happens in a running system when the battery dies or is otherwise cut off? The charge controller is left connected to
the PVs. I have not seen how to handle this situation, given that the charge controller should always be connected to battery first.
I can think of several things to do or other scenarios:
1. use some sort of tied breaker so that if the breaker from the battery trips, it force-trips the second breaker on the link from the PVs, thus disconnecting the charge controller completely.
2. Assume the risk and (potentially) get a new charge controller.
3. Perhaps (many?) charge controllers have a way of dealing with this situation, with some sort of shutdown sequence that electrically disconnects the PVs or provides some sort of shielding when the battery dies.
I could also have missed such a discussion. (I am new here).
Any thoughts? Thank you.
-Chris