
Installation
3–24
975-0289-01-01
Ground Fault Protection
Ground fault protection is required when using either solar or wind
renewable energy input. Figure 3-22 shows the location of the ground
fault protection terminals and replaceable fuse.
When a grounding fault is detected, the ground fault protection fuse will
blow. The system must be shut down completely, the fault corrected, the
fuse replaced (see “Replacing the Ground Fault Protection Fuse”) and
then the system restarted.
If an error is made on the installation or if the installer is called in to help
repair the installation after damage that caused the ground fault protection
fuse to open, the main symptom is that the unit will be shut down and will
not invert or charge. The error that is shown on the front panel is
.
Replacing the Ground Fault Protection Fuse
The ground fault protection fuse will blow when severe leakage occurs
between the PV array and earth ground, or when the system has been
installed with faulty DC wiring. Before replacing the fuse, it is important
to have qualified service personnel, such as a certified electrician or
technician, to determine the cause of the ground fault.
DANGER
ELECTRICAL SHOCK AND FIRE HAZARDS
• All wiring should be done by qualified personnel to ensure compliance with
all applicable installation codes and regulations.
• Disconnect all AC and DC power sources.
Failure to follow these instructions will result in death or serious injury.
WARNING
ELECTRICAL SHOCK AND FIRE HAZARDS
• Replace the ground fault protection fuse only with the same type and ratings
of fuse.
• After disconnection both AC and DC power for the system, wait five
minutes before attempting any maintenance or cleaning or working on any
circuits connected to the inverter. Internal capacitors remain charged for
five minutes after disconnecting all sources of power.
Failure to follow these instructions can result in death or serious injury.
975-0289-01-01(PowerHub_1800_IG).book Page 24 Thursday, June 4, 2015 9:49 AM
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