KACO Powador 10.0 - 20.0 TL3 - Manual (Page 19)

EN
Installing the inverter
Operating Instructions Powador 12.0 TL3-20.0 TL3 Page 19
Authorised electrician
7.2.2.1 Before connecting
Ensure that there is no ground fault
1. Determine the DC voltage between the
– Protective earth (PE) and the positive cable of the PV generator.
– Protective earth (PE) and the negative cable of the PV generator are identified.
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.
2. Rectify any faults before taking further measurements.
3. Determine the electrical resistance between the
– Protective earth (PE) and the positive cable of the PV generator.
– Protective earth (PE) and the negative cable of the PV generator.
Low resistance (< 2MΩ) indicates a high-ohm ground fault of the DC generator.
4. Rectify any faults before connecting the DC generator.
7.2.2.2 Maximum input power
The input power of the inverter is limited only by the maximum rated current of 18.6 A per input. This causes the
maximum input power per path to increase with the input voltage.
NOTE
The overall power of the unit continues to be limited. If one input is connected to more than
P(DCmax)/2, the maximum input power of the second input decreases accordingly. Take care that
the maximum input power is not exceeded.