Installation and Operating Instructions V03
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5.2 System layout of units without integrated DC switch
Local standards or codes may require that PV systems are fitted with an external
DC switch on the DC side. The DC switch must be able to safely disconnect the
open-circuit voltage of the PV array plus a safety reserve of 20%.
Install a DC switch to each PV string to isolate the DC side of the inverter. We
recommend the following electrical connection:
Damage to the inverter due to electrostatic discharge
• Touching electronic components can cause damage to or destroy the
inverter through electrostatic discharge.
• Ground yourself before touching any component.
