34
Select optical fibers as the external communication cable to lower the signal
interference.
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During electrical connections and other operations on the module, observe the following
Five Safety Rules:
• Disconnect all the external connections and disconnect the inverter internal power
supply.
• Avoid any accidental re-connections.
• Verify that no voltage or current is present with appropriate measurement instrument.
• Ground and short-circuit whenever necessary.
• Cover possible live parts to avoid accidental contact.
6.2 Preparation before Electrical Connections
Electrical connections between devices inside the inverter have been performed before
delivery. On site, the connections between the inverter and external devices need to be
performed, including DC connection, AC connection and communication connection.
6.2.1 Installation Tools
Installation tools include but are not limited to the following recommended ones, and
other auxiliary tools or components can be used on site when necessary.
6 Electrical Installation System Manual
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