Installation and Operation Manual
Page 79 of 156
[PVI-XXX.0-YY(-TL) - Rev:1.0]
11.5.
Connection of auxiliary energy supply
Connect the five-pole cable (3P+N+T)
to the clamps indicated in Figure 11-8
and Figure 11-7.
NOTICE
Pay maximum attention to the connection
of the neutral cable!
Lack of the neutral
connection (blue clamp) or its inversion with
one of the three phases may cause the
inverter to breakdown
.
Leave the QS2 switch in the OFF
position (down).
The QS2 switch has two functions:
•
disconnect the auxiliary voltage
•
disconnect the system in the case
of breakdown of the OVR AC
devices.
This switch is always accessible.
For the 275kW and 330kW versions,
also connect the four-pole cable (3P +
N) supplied in the compartment of the
Acbox-Transformer, to the appropriate
counterpart.
S
u
rg
e
P
ro
te
ct
o
r
Figure 11-7: Clamps for connecting the
auxiliary AC grid and the relative
magnetothermic switch (versions with
power ≥275kW or without Transformer)
Figure 11-8: Clamps for connecting the
auxiliary AC grid and the relative
magnetothermic switch (versions with
Transformer with power ≤220kW)
NOTICE
It is important to leave a gap of 30 cm of
cable pocketed in the ACBOX to allow the
full extraction of the AC drawer
.
Chapter §17.7
