KACO blueplanet 3.0 - 4.6 TL1 - Manual (Page 22)

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Installation
Page 22 Operating Instructions for KACO blueplanet 3.0-4.6 TL1
Authorised electrician
7.4.1 Connect PV generator to device
DANGER
Risk of fatal injury due to contact voltage!
›
In accordance with IEC62109-1 §5.3.1., grounding on the PV modules or strings is prohibited under
any circumstances.
NOTE
In accordance with IEC 61730 Class A, connected PV modules must be dimensioned
for the DC system voltage provided, and at least for the value of the AC grid voltage.
DANGER
Risk of fatal injury due to contact voltages.
›
During installation: Electrically disconnect the DC positive and DC negative from the protective
earth (PE).
›
Disconnect the inverter from the PV generator using the integrated DC isolator switch.
›
Remove the plug connector.
1 2
A B
Figure 23: Connections for DC positive and DC negative
Key
A MPP tracker A B MPP tracker B
1 DC plus/DC minus connection 2 DC plus/DC minus connection
7.4.2 Before connecting
Ensure that there is no ground fault
1. Determine the DC voltage and resistance on the PV generator for:
–
protective earth (PE) and positive cable
– protective earth (PE) and negative cable
If stable voltages can be measured, there is a ground fault in the DC generator or its wiring. The ratio between the
measured voltages gives an indication as to the location of this fault.
In addition, ensure that the PV generator has a total insulation resistance of more than 2.0 MOhm, since the
inverter will not feed in if the insulation resistance is too low.
2. Rectify any faults before connecting the DC generator.
Connect the PV generator to the DC positive and the DC negative connection plugs on the underside of the housing
(see Figure 23).