Alencon SPOT: Installation,
Operation, and Maintenance Manual
35 |
P a g e
8.6.4 Short Circuit Check
After connecting SPOT to input power source, close the input disconnect and use a current
clamp to check that no current flows to the SPOT through any of the 4 channels. If any current
is measured, open the input disconnect immediately and contact Alencon technical support.
When finished, the input disconnect should be opened and remain open until the SPOT install
has finished and SPOT is ready for commissioning to begin (see section 9.3).
8.7 Connecting the SPOT to Output/Load Cables
Ensure the output is ‘off’ or disconnects are in OPEN positions, before making connections to
the SPOT output ports. Keep the SPOT isolated from load until commissioning (see section 9.3).
8.7.1 Output Wiring
Up to four outputs are connected to a single SPOT via Amphenol H4 connectors as.
Inspect and assure that the plus and minus connected to each SPOT channel
correspond to the same output/load.
Push together the outputs to the correct polarities as shown in the table above, and make sure
they click closed.
8.7.3 Output Fusing
Irrespective of the application, (new PV plant, Solar + Storage, PV retrofit, etc.) the SPOT
requires external fusing on the output.
When using the SPOT in an application without combiner boxes, Alencon can provide an
external fuse disconnect box or the FEED (see section 6.1) with appropriately rated fuses and
fuse holders. SPOT outputs may be wired to a DC inverter bus through existing combiner boxes.
Often, combiner boxes are equipped with fuse holders. If this is the case, install the appropriately
rated fuses there.
