16 -en
installation and configuRation manual
foR auRoRa photoVoltaic inVeRteRs
8. pre-commissioning checks
Warning! Carrying out preliminary checks before commissioning the inverter is always recommended; this
way you avoid possible damage to the unit that could be caused by its faulty installation.
The main checks to carry out are the following:
8.1 electRical checKs
PE connection check: check the inverter has an earth connection.
Warning! Power One Aurora inverters must be connected to earth by the prepared clamp and using a cable with a section
suitable for the maximum failure current that can be had on the system. Any failure of an inverter which is not connected
to earth by the appropriate terminal block or fastening screws is to be considered outside the warranty.
Check of the input voltage values: check that the inverter’s input voltage does not exceed the permitted limits (ref.
technical data table in Appendix C). Voltage values above the specifi cations can irreparably damage the unit. any
consequent failure of the inverter is to be considered outside the warranty.
Check of the input voltage polarity: make sure the input voltage has the correct polarity.
Check of the photovoltaic generator’s insulation to earth: use an insulation tester to make sure that insulation resistance
to earth for the DC section of the system is greater than 1MOhm. Resistance insulation values of less than 1MOhm do
not permit the inverter to complete the parallel with the grid. Resistance insulation values of less than 10MOhm can hide
insulation problems that could be accentuated in periods when there is humidity in the photovoltaic generator.
Warning! Aurora inverters are supplied with an internal protection system capable of detecting any earth leakage
occurring on the DC side of the equipment or inside the inverter on the output side of the AC terminal connector. This
protection system, designed to disconnect the inverter in the event of an accidental indirect contact or a breach of the
insulation, is not capable of protecting the inverter from a dead short of one of the poles of the solar array when the
equipment is connected to the AC grid (such an event could damage the inverter and such damage is not covered by the
warranty). Further, this protection system is not capable of protecting the AC line to which the inverter is connected, for
which you are recommended to install an automatic circuit breaker which will cut out in the event of a leakage on that
line (see the table on page 7 for the characteristics of the automatic circuit breaker for each inverter model).
Check of the grid voltage: check that the voltage of the grid to which the inverter will be connected complies with the
values shown in the technical data table in Appendix C.
Voltage values above the specifi cations can irreparably damage the unit.
On the display, set the mode to “3 Phase Unbalanced” (see section 10 for information about using the
display buttons). Select the “Settings” menu, key in the password (default 0000), select the “Remote Control”
menu and select “3-PH Unbal.”
In the event that a unit is switched off or becomes faulty, the other units are consequently set to limit their
output power to 4600W avoiding any unbalance of the phases.
Summary of Contents for Aurora PVI-10.0-TL-OUTD
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Page 64: ...Photovoltaic Inverters APPENDIX B Cable wiring diagram for RS485 line...
Page 69: ...Photovoltaic Inverters...
