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Morningstar's ground fault protection device increases safety and protection of off-grid and grid-tie systems. It maximizes flexibility since it is possible to be used in positive and negative grounded PV systems. It is compatible with different brands of charge controllers and inverters.
The ground fault protection device from Morningstar comes in 150V and 600V models. These can isolate the battery, loads, charge controller and inverter from the PV array disconnecting both positive and negative conductors.
It can be used with multiple controller or single controller systems. When it is used in a multiple controllers system it will shut off only the affected controllers and maintain the system earth bond for the rest of the units.
The usage of fuses is avoided because using high-quality breaker switches, these will continue working even after a ground fault interruption.
This is a highly sensitive device that will detect current imbalances between the primary negative and positive PV conductors entering a charge controller or an inverter. It has more precision than a fused ground fault protector providing continuous and constant measurements.