Establishing The Connections - REFUSOL REFUsol008K Instrucciones De Uso

BA_REFUsol 008K-023K_V04.0_WW

3 Establishing the connections

Note:
3.1 Grounding
CAUTION
The inverter features a threaded bolt below the power supply port on the connection side for additional
grounding. Grounding is intended to ensure optimum overvoltage protection. That is why the ground
wire cross-section must be chosen in excess of the cross-section of the power supply line by a factor
of one (at least 10 mm²). In addition, ensure that the ground wire is placed as far away from and not
directly in parallel to the power supply line.
Figure 4
3.2 PV- Generator DC Connection
CAUTION
WARNING
26
To ensure protection class IP65, only use the male and female connectors
provided for connecting the inverter and connect them according to the
connector manufacturer's mounting instructions. To protect against
penetrating moisture and dirt, unused inputs and outputs must be properly
closed. Failure to observe these specifications could void your warranty!
Risk of electric shock!
The inverter must be connected to the ground stud. Otherwise, a
voltage gradient may develop, which may result in electric shock!
Grounding bolt
Before connecting the PV strings, connect the inverter to the power supply network
and to the ground bolt to ensure that the device is safely connected to the
protective conductor.
Connect the PV strings to the inverter only in the de-energized state, optimally in the
dark because that is when the PV strings are inactive.
The protective conductor must be connected to the housing separately from and in
addition to the power supply connection.
Live PV strings can be under lethal voltages.
 Before connecting the PV strings, verify that the open circuit voltage does
not exceed 50 V.
GND
Grounding bolt (M8)
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