Ebikeforlife
Member
- Joined
- Jan 6, 2021
- Messages
- 36
Good morning all from sunny UK (today at least)
Sorry been away a few months, ebike builds have taken up almost all of my time..
I have finally managed to get enough usage usage estimations from my current set up to start and build my whole home battery backup system.
I know that we use a smallish amount of power per day 9.9kwh and have already got a very tiny 750w grid tie setup on the roof which generates a max of 30Ah at 90v DC which is then inverted to 249v and goes directly to our consumer unit (this was installed when the house was built and no more room on the roof for panels)
The grid tie inverter is a measly 700w inverter which I have built a battery and that's working well.
The next phase is to add a second solar array that covers the house energy needs.. But I need to make sure that when the grid goes down that we have an auto transfer switch that switches of the grid to avoid any potential back feeding.
Because in the last 7 times its gone down, it will keep coming on and offline for about 30 mins before it is stable, I am looking for a way to do as follows.
Detect no grid power and switch off the incoming grid... Detect grid power is back live and wait say 30 mins for stable power and switch back in...
My plan was to have an ATS that has grid power one side and nothing on the other so if grid goes down it just switches off and my inverter then feeds the house
Does this sound viable or do the ATS have to have a connection both sides?
Sorry been away a few months, ebike builds have taken up almost all of my time..
I have finally managed to get enough usage usage estimations from my current set up to start and build my whole home battery backup system.
I know that we use a smallish amount of power per day 9.9kwh and have already got a very tiny 750w grid tie setup on the roof which generates a max of 30Ah at 90v DC which is then inverted to 249v and goes directly to our consumer unit (this was installed when the house was built and no more room on the roof for panels)
The grid tie inverter is a measly 700w inverter which I have built a battery and that's working well.
The next phase is to add a second solar array that covers the house energy needs.. But I need to make sure that when the grid goes down that we have an auto transfer switch that switches of the grid to avoid any potential back feeding.
Because in the last 7 times its gone down, it will keep coming on and offline for about 30 mins before it is stable, I am looking for a way to do as follows.
Detect no grid power and switch off the incoming grid... Detect grid power is back live and wait say 30 mins for stable power and switch back in...
My plan was to have an ATS that has grid power one side and nothing on the other so if grid goes down it just switches off and my inverter then feeds the house
Does this sound viable or do the ATS have to have a connection both sides?