Installation and Operator’s Manual Page 14 of 63
(PVI-3600-OUTD-UK-F-W Rev.: 1.0)
This process ensures optimal performance levels of the whole unit, as well as a
high efficiency over the input voltage operating range and load conditions, always
in full compliance with the applicable directives, standards and regulations.
2.4 Protective Devices
2.4.1 Anti-Islanding
When the local power distribution grid fails due to a fault or when the equipment
is shut down for maintenance operations, AURORA shall be physically
disconnected under safety conditions, so as to protect the people working on the
grid, in full compliance with the applicable prevailing national standards and
regulations. To avoid any possible islanding operation, AURORA is provided with
an automatic disconnection protective system called Anti-Islanding.
The AURORA PVI-3600-OUTD-UK-F-W model is equipped with an advanced
Anti-Islanding protection certified according to the Clear Skies standard.
2.4.2 Ground Fault
The Ground fault detection identifies ground faults that are present on the DC
input conductors and the AC output conductors. An advanced ground fault
protection circuit continuously monitors the earth (ground) connection and shuts
down AURORA in case a ground fault is detected and indicates the ground fault
condition by means of a red LED on the front panel. AURORA is equipped with a
(chassis) ground screw clamp, which shall be used for connection of the plant
Protective Earth conductor (equipment grounding conductor). See section 3.5
(step 4/7) for detailed grounding instructions.
WARNING: Do not connect the Wind AURORA inverter to multiple
wind turbine inputs. The AURORA inverter is designed for connection
to a single wind turbine only.
NOTE: For detailed information on AURORA disconnection and on
malfunctioning causes, refer to the corresponding sections.
2.4.3 Further Protective Devices
AURORA is equipped with additional protections to guarantee safe operation
under all circumstances. The protections include:
Continuous monitoring of the grid voltage to ensure the frequency and
voltage values are within the proper operational limits;