Morningstar Ground Fault Protection Device
Morningstar’s Ground Fault Protection Device products are built to provide a
superior solution to ground fault protection for both off-grid and on-grid PV
systems. The GFPD products’ are available in two model versions (GFPD-150V and
GFPD-600V) to support 150V and 600V PV system breaker stacks.
Morningstar’s GFPD increases safety and design flexibility in off-grid and
on-grid PV systems. Ground fault protection is used in electrical systems to
prevent current from following any unintended paths during a ground fault. It
is critical to detect any stray current and to interrupt (break) the circuit
until safe operation can be restored. A current imbalance between the
conductors of a circuit indicates a ground fault. When a ground fault is
detected, Morningstar’s GFPD breaks the circuit on both the positive and the
negative legs and ensures interruption of the ground fault current better than
other solutions on the market.
Features and Benefits
Maintains the integrity of earth bond for battery and loads.
Trips at lower fault current with greater accuracy.
• Breaks both conductors in the faulted circuit and
isolates PV source circuits.
Does not require an extra warning label at the battery as per
U.S. National Electric Code requirements.
• Provides design flexibility to meet a wide range of
• Positive and negative
• Large and small arrays
Makes it easier to locate and troubleshoot ground faults.
Powered via the PV system’s battery bank.
Equipped with both visual and audible alarms.
Built to support both single controller and multiple controllers
• Morningstar’s GFPD will only shut off
while maintaining the system earth
• All loads will continue to operate
safely with the battery
Multiple controllers and GFPDs can be added on an as-needed basis
Manufacturer: Morningstar Corp.
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