76 Planning the electrical installation
Inverters without input DC fuses (option +0F291)
In the case of a negative-pole functionally-grounded inverter (standard feature), protect
the positive poles of inputs with separate fuses. If you have selected the floating DC option
(+F314), protect the positive and negative poles of inputs with separate fuses. In the case
of a positive-pole functionally-grounded inverter (+F282), protect the negative poles of
inputs with separate fuses.
For the recommended DC input fuse options and dimensions, refer to DC input fuse
recommendations on page 99.
Ethernet switch (option +K480)
Option +K480 adds a managed Ethernet switch to the customer I/O section. The switch is
intended to connect the inverter to the fiber-optic network of the solar power plant.
Switch model: Phoenix Contact FL SWITCH 3006T-2FX SM.
• Managed type
• Ring network redundancy
• 100 Mbit/s
• 2 x Single mode fiber. SC connectors. Max transmission length 40 km.
• 6 x RJ45 Ethernet. Used to connect the internal control unit and optional remote
monitoring unit to the switch.
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