Connecting the PV Modules to the Inverters

Requirements:

  • All electrical installations must be carried out in accordance with all electrical standards applicable on-site and the National Electrical Code® (NE, ANSI/NFPA 70) (see National Electrical Code®, paragraph 690.8 (B)(1), paragraph 690.8(A)(3)) or the Canadian Electrical Code® CSA C22.1.
  • The PV modules must be correctly mounted in accordance with the manufacturer specifications.
  • Each inverter must be connected to no more than one PV module.
  • The thresholds for the input voltage and the input current of the inverter must be adhered to.
  • The positive connection cable (DC+) of the PV module must be fitted with a positive DC connector suitable for the DC connector of the inverter.
  • The negative connection cable (DC−) of the PV module must be fitted with a negative DC connector suitable for the DC connector of the inverter.

Procedure:

  1. DANGER

    Danger to life due to electric shock

    Do not disconnect under load

    PV plug connections must not be disconnected while under load. They can be placed in a no load state by switching off the DC/AC converter or breaking the AC circuit.

    1. Make sure that the two-pole circuit breaker is switched off and cannot be reconnected.
    2. Make sure that the PV modules are covered.
  2. Check the PV module for ground faults ( > Checking the PV System for Ground Faults).
  3. Check the DC connectors of the PV module for correct polarity and connect to the DC connectors of the supplied DC plug. Tip: for correct assignment, the DC plug is marked with + and ‒.
  4. The DC connectors snap into place.
  5. Make sure that the DC connectors are securely in place.
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  6. Insert the DC plug with the DC connectors into the outer pin connector on the inverter.
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