Connecting Additional Grounding

The inverter is equipped with a grounding terminal with two connection points on the DC side for additional grounding (e.g. use of a grounding electrode).

The grounding terminal is yellow/green and identified as follows:

  • Equipment grounding terminal: symbol

  • Grounding electrode conductor: labeling GEC

Cable requirements:

  • The cable must be designed in accordance with the local installation requirements and for temperatures of over +90°C (+194°F).
  • Cable type: copper wire
  • Conductor cross-section: 10 mm² to 35 mm² (8 AWG to 2 AWG)

Requirement:

  • The conduits must be correctly connected to the inverter.

Procedure:

  1. DANGER

    Danger to life due to electric shock

    1. Disconnect the inverter from all voltage sources ( > Disconnecting the Inverter from Voltage Sources).
  2. If the protective cover is mounted, loosen the screws of the DC protective cover using an Allen key (AF 3) and remove the DC protective cover.
  3. Lead the equipment grounding conductor or the cable of the grounding electrode through the installed conduit into the inside of the inverter.
  4. Strip the equipment grounding conductor or the cable of the grounding electrode by 18 mm (0.71 in).
  5. Connect the equipment grounding conductor to the connection point with the symbol and tighten with a screwdriver (blade width: 6 mm (0.24 in)) (torque: 5.8 Nm (51 in-lb)).
  6. Connect the grounding electrode cable to the connection point GEC and tighten with a screwdriver (blade width: 6 mm (0.24 in)) (torque: 5.8 Nm (51 in-lb)).
  7. Make sure the equipment grounding conductor or the grounding electrode cable is firmly in place.
    8. 830551820
  8. Reattach the DC protective cover. Tighten all four screws with an Allen key (AF 3) in the order 1 to 4 (torque: 3.5 Nm (31 in-lb)).
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