having 66% reserve rather than 50%.
Interesting and I guess they have their reasons. But the 50% line is what has become an "industry rule
of thumb" of price
vs longevity of batteries. In other words, it becomes the most economic use of the life/power/cost of the bank. If I can explain it in a better way, Once you start to discharge a battery, it's loses some of it's life, never to come back again when recharged. It's gone for good. Eventually enough life gets removed making the battery useless to us. The further you discharge a battery, the more of that life is removed. I have found that start batteries will handle 3 compleate discharges and they are dead for ever. Like leaving your car lights on for instance. For a deep cycle battery, the 50% mark is considered the best cycling rate to get the optimum life from the battery, vs getting power. I am still not sure that made sense.
OK, now to charging. Yes you are right about thumping current
back in to a bank with temperature monitoring. Yoy can really hit the bank hard as long as the temp stays low. But this is where I believe you may come unstuck. The reason why I am harping on about the bank being too big, is the ability to rapidly charge. If you really do want to get 35 to 40% back in, then you need a 350A-400A charger with the 1000Ah bank. That is serious power and I don't think you will find a charger capable.
So the goal is to try and find a balance. A bank big enough to meet the consumption
needs and yet small enough to allow you to recharge as quickly as possible.
In relation to the Isolating tx Sully was talking about. To correctly wire an invt/chgr means that you will have the mains earth connected to your boat DC earth. This then leaves you susceptable to galvanic corrosion
between boats connected to the shore power
also. Not so much an issue when on the hook of course. But if you are connected to shorepower, you need to isolate the earth in saome safe way. This can be done by using an Isolating Tx or by using a Galvanic Isolator
which breaks the earth in normal circumstances, but allows current
to flow in a fault condition.
However, I see you have one in the diagram.
Good circuit by the way. Only one very nitpicky point. The DC earth on the Generator
needs to be taken to DC earth on the main engine
. The AC earth Bussbar is then connected to DC earth at that same earth point on the engine
. This eliminates "earth loops"
I think you are on the right track running your equipment
from the inverter to eliminate the freq and voltage differences.