Installation and Operation Manual
Page 134 of 156
[PVI-XXX.0-YY(-TL) - Rev:1.0]
17.
SWITCHING OFF AND DISCONNECTING THE SYSTEM
DANGER
If it is necessary to operate on exposed parts (not protected by
panels), it is not sufficient to turn the grid switches (AC) and field
switches (DC) to 0 (OFF), because the input cables are always
under voltage!
Turn off and disconnect the inverter.
Chapter §
17
MANDATORY UPSTREAM DISCONNECTION
17.1.
Disconnection from the AC grid
The procedure for disconnecting AURORA
from the grid is the following:
1.
It is advisable to set all Master modules
of the rack on the REMOTE OFF position
by means of the display.
In this way, the power fed into the
grid is practically null
and the AC
switch can be opened in the absence
of any load.
2.
Turn the AC switch to the 0 position, i.e.
turn it counter-clockwise:
a.
The inverter disconnects from the AC
grid and therefore it no longer supplies
power.
b.
All the displays of the rack relative to
the open switch will signal an AC
switch alarm.
The LED flashes. POWER ON
The ALARM LED is on.
The MISSING GRID LED is on.
In this phase, it is possible that the
modules display a different error in
the first minute, since the opening
of the grid switch is interrupted and
a Grid Fault alarm or similar may be
triggered off. After the recovery
time (e.g. 60 sec), the signal will be
the same on all modules.
