6. Electrical Connection
Prior to any electrical connections, keep in mind that the inverter has dual power supplies.
It is mandatory for the qualified personnel to wear personal protective equipment (PPE)
during the electrical work.
Danger to life due to a high voltage inside the inverter!
• The PV string will generate lethal high voltage when exposed to sunlight. Before
starting electrical connections, disconnect the DC and AC circuit breakers and prevent
them from inadvertent reconnection.
• Ensure that all cables are voltage free before performing cable connection.
• Any improper operations during cable connection can cause device damage or
personal injury.
• Only qualified personnel can perform cable connection.
• All cables must be firmly attached, undamaged, properly insulated and adequately
dimensioned.
• Comply with the safety instructions related to the PV strings and the regulations
related to the utility grid.
• All electrical connections must be in accordance with local and national standards.
• Only with the permission of the utility grid, the inverter can be connected to the
utility grid.
Notes:
The cable colors shown in the electrical connection diagrams provided in this chapter are
for reference only. Select cables in accordance with local cable specifications (green and
yellow cables are only used for PE).
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