Connecting The Ground Cables - Growatt WIT 50K-A User Manual

Wiring diagram of the system with a single WIT 50-100K-HU
inverter and two meters
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6.1 Connecting The Ground Cables

1. It is essential to connect the ground cable to the WIT inverter before connecting other
cables to prevent personal injury or device damage.
2. All non-current-carrying metal parts and the enclosures of the devices of the energy
storage system should be properly grounded, including the rack and the enclosures of
the combiner box, the distribution panel, the inverter and the battery.
3. For a single WIT inverter, connect a ground cable to the ground point on the chassis
shell. For a system with multiple WIT inverters connected in parallel, ensure that the
enclosures of the WIT Inverters, the metal racks of the PV modules and the batteries
are connected to the same area to achieve equipotential bonding.
4. The position of the ground points of the WIT 50-100K Storage/Hybrid Inverter is
shown in Fig 6.1. You can find the ground points after removing the right cover plate.
Right cover
plate
Fig 6.1 Ground points
NOTE:
1. Keep the lightning protection grounding at the greatest possible distance from the
protective grounding.
2. Protect the terminals of the ground cables against rain and do not expose the them to
open air.
3. Tighten the enclosure grounding screw to a torque of 60 kgf·cm.
Ground
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