One of the biggest benefits of the Victron equipment design whereby components that are doing different jobs (for example stepping down or inverting a voltage from a battery or charger) electrically, are kept as separately operating machines, as opposed to the ‘all-in-one-box’ approach of the high-frequency inverters (like RTC or Deye or Sunsynk). So when it comes time to add anything to the system, the addition of the requisite MPPT allows addition of any size of array, within voltage limits, and of course the available roof space that is suitably inclined for solar panels.
We always provide either a string box or a combiner box (both with appropriately sized fuses) between the system and the solar panel array. This is a protection mechanism to isolate any electrical faults (like a surge or lightning strike) at the solar panels.
Each array will then have an additional surge protection device (SPD) at a small sub-DB that connects the panels to the MPPT, and the MPPT to the Battery. The MPPT is what manages the charge from the solar panels, to charge the battery (and supply what loads happen in daylight). Another breaker is placed between the MPPT and the battery, should there be a need to isolate these items.
As we continue to strive for the best level of safety and reliability, some new approaches to our methods may become available. When we see there is a way to improve your system, we will advise you accordingly on our annual service report, after the maintenance visit.
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