7.4.4
Designing the PV generator
CAUTION
Damage to components due to faulty configuration
In the expected temperature range of the PV generator, the values for the no-load-voltage and the short circuit current
must never exceed the values for U
dcmax
and I
scmax
in accordance with the technical data.
1. Observe limit values in accordance with the technical data.
NOTE
Dimensionierung des PV-Generators
The device is designed with a reserve of DC short-circuit current resistance. This enables an overdimensioning
of the connected PV generator The absolute limit for the PV generator is the value of the maximal short circuit
current (ISC
max
.) and the maximal open circuit voltage (U
DCmax.
). See Footnote under [See section 4.1
7.4.5
Connecting the PV generator
DANGER
Risk of fatal injury due to electric shock!
Severe injury or death will result if the live connections are touched. When there is sunlight present on the PV
generator, there is DC voltage on the open ends of the DC cables.
1. Only touch the PV generator cables on the insulation. Do not touch the exposed ends of the cables.
2. Avoid short circuits.
3. Do not connect any strings with a ground fault to the device.
CAUTION
Damage to the PV generator in case of faulty configuration of the DC connector.
A faulty configuration of the DC connector (po/-) causes equipment damage in the DC connection if it is connected
permanently.
1. Please check polarity (+/-) of the DC connector before connecting the DC generator.
2. Before using the solar modules, check the vendor’s calculated voltage values against those actually measured. The DC
voltage of the PV system must not exceed the maximum no-load voltage at any time.
NOTE
Type and configuration of the PV modules
Connected PV modules must be dimensioned for the DC system voltage in accordance with IEC 61730 Class A
but at least for the value of the AC grid voltage
7 | Installation
Manual
KACO blueplanet 3.0 TL3 KACO blueplanet 4.0 TL3 KACO blueplanet 5.0 TL3 KACO blueplanet 6.5 TL3 KACO
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