Alencon SPOT: Installation,
Operation, and Maintenance Manual
25 |
P a g e
8.1.2 MPPT operational range
The MPPT software maximizes the efficiency of PV strings if the operating voltage is within the
MPPT operational window. The SPOT will continue to operate also when the PV voltage is out
of the specified MPPT range, but it must be within the overall specified voltage range. In that
mode the SPOT but the system will run at lower efficiency and the harvested energy may be
lower than expected.
The maximum power point voltage (V
MPP
) of a string connected to the SPOT should be around
the nominal input voltage of the SPOT.
8.2 Installation Procedure
The SPOT has been designed to be quickly deployed in the field. Much of the configuration of
the system is done at the factory prior to shipping to decrease the amount of time needed for
install and commissioning the system in the field.
A summary of the steps to install and prepare SPOT units for commissioning is provided below:
1)
Locate the system layout schematic provided by your system integrator. This diagram
should show the location where each SPOT needs to go, including its LIN (Local
Identification Number)
2)
Mount the SPOTs (Vertical or Horizontal)
3)
Mount Input Disconnects (if separate from the SPOT).
4)
Connect input power wires to disconnects (if separate from the SPOT). Disconnects
should remain in OPEN position.
5)
Connect disconnect output wires to the SPOT inputs (if separate from the SPOT).
6)
Connect the output wires to the combiner box, trunk cable harness or other load.
(Disconnects should remain in OPEN position or combiner boxes remain ‘off’).
