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We are building a 3 phase Off Grid system with generator back up using 6 x Quattro 48V /10000
Seeking clarity on whether an external BY pass switch is required so that the generator can feed the loads directly in the event of equipment failure. In other words what condition does the AC source contactor go to if for example the battery supply is removed or the inverter is damaged/faulty
Yes, the bypass is a must if you want power when the inverter system has a problem and needs work done.
Contactors usually go to open (unless they welded shut).
If one unit is off, the whole system is off anyway and the power will not pass through in that condition.
