A deeply discharged or shut-down system may not always have every source available at the same time. HESP 14–18kW EU can be activated from grid, PV or generator input, giving the installer more recovery paths than a design that depends on only one source. This is useful for large HESP 14–18kW single phase hybrid inverter systems in weak-grid or backup-focused applications. It does not replace correct low-battery protection; instead, it makes restart and recovery more flexible after an outage or deliberate shutdown.
