Pv Modules Potential - Aros APPENDIX 1500 Manual De Instrucciones

5.7

PV modules potential

During transformerless inverter (like this product) operation it is normal to find an high
voltage between each pole of the PV generator and ground. This high voltage is due to
the connection between neutral and ground in a TT or TN distribution system. This
voltage value and waveform varies depending on inverter's topology.
The 4.6kW inverter has a DC voltage of -350V between negative pole of PV generator
and ground.
All other inverters have a waveform like the one in the following image.
V
0V
-350V
10ms
- ENGLISH -
20ms
The measures
performed by using a tester on
such a waveform are not
t
reliable because a tester is an
instrument specifically designed
to measure DC or sinusoidal
voltages.
which are
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