Good day.
I was asked to help with victron system startup. But noticed some strange moments.
System configured as ESS with PV on AC-input (former hub-4) and consist's of:
1. quattro 48/15 - 3 pcs
2. SMA 20TL grid inverter -4 pcs
3. BYD B.Box 13.8
4. AC Current sensor - single phase - max 40A - 3pcs
5. CCGX
And there is no load on AC-output of quattros.
So the list of questions:
1. AC Current sensor - single phase - max 40A will may work with 100-115 A from PV-inverters. Is it safe? May it damage the quattro for some reason?
2. Will the current sensor show anything as the pv-inverters connected to the quattro AC-input not c-output? May be it is better to disconnect AC Current sensors? or even remove?
3. Also there is no energy meter installed at AC-input of the whole system. And no loads at AC-output of the quattros. As I remember in such case ESS will not work properly. CCGX doesn't see pv energy production and energy consumption.
4. One b.box 13.8 for 3 x 48/15000 quattros! It'a not enough. BYD recomend's 3 B.box-13 for quattro 48/15 000 3 phase. May there be any problems?
I was asked to help because it is very hard to communicate with the firm sold the victron equipment. And as I see this set of equipment compiled with errors and will not work in ESS mode. Now we have top priority task - to show the client that all is work. I set it as an UPS.
So we have 4 SMA 3 phase on-grid inverters, 3 quattros 15 kVA. pv Inverters connected to AC-in of quattros (hub-4). What do I need to make it work in ESS mode with zero balance (power supply to the network is prohibited)?