Re: Power-One solar Inverter driving me NUTS!!!
PVI-3.0 3.6 4.2-OUTD-US Manual
https://powertripenergy.com/wp-conte...4.2-manual.pdf
https://ressupply.com/documents/abb/...-US_Manual.pdf
CASR series Current transducer
https://www.lem.com/sites/default/fi...asr_series.pdf
LEM's product range
https://www.lem.com/en/product-list?keys=
As I see it, we should be looking for a fault on the PV side.
I believe that GRP is Photovoltaic GRound.
The CASR/25/SP3 transformers are measuring the current in one leg of each PV circuit. Ground fault detection requires that the differential current be sensed, ie we must sense the current in both legs. Therefore we must look for a detector on the PCB that has the bulk capacitors. This detector must be connected to BOOST1, BOOST2 and GRP.
The CT...SP4 transformer appears to be sensing the AC current, so I don't think we should be looking here.
PVI-3.0 3.6 4.2-OUTD-US Manual
https://powertripenergy.com/wp-conte...4.2-manual.pdf
https://ressupply.com/documents/abb/...-US_Manual.pdf
CASR series Current transducer
https://www.lem.com/sites/default/fi...asr_series.pdf
LEM's product range
https://www.lem.com/en/product-list?keys=
The red 'GFI' (ground fault) LED indicates that AURORA Inverter is detecting a ground fault in the DC side of the photovoltaic system. When this kind of fault is detected, the AURORA Inverter disconnects from the grid and the corresponding fault indication appears on the LCD display. AURORA Inverter remains in this condition until the operator presses the ESC key to re-start the grid connection sequence. If pressing the ESC key doesn’t clear the ground fault check the ground-fault, fuse located in the switchbox. If AURORA Inverter does not reconnect to the grid, contact Power-One Technical Service.
I believe that GRP is Photovoltaic GRound.
The CASR/25/SP3 transformers are measuring the current in one leg of each PV circuit. Ground fault detection requires that the differential current be sensed, ie we must sense the current in both legs. Therefore we must look for a detector on the PCB that has the bulk capacitors. This detector must be connected to BOOST1, BOOST2 and GRP.
The CT...SP4 transformer appears to be sensing the AC current, so I don't think we should be looking here.
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