- 53 -
000326BG
5 - Installation
I
nput connection to PV generator (DC side)
Once preliminary checks have been carried out and no problems found
with the photovoltaic system, and the channel configuration has been se
-
lected (parallel or independent) you may connect the inputs to the inverter.
The DC side connections are different according to power size and to the presence or other-
wise of the DC disconnect switch inside the inverter.
The -S versions accept a direct single
strings connection with connectors which are located
on the outside of the inverter.
When the photovoltaic panels are exposed to sunlight they provide continuous DC voltage
to the inverter.
To avoid risks of electrical shock, all wiring operations must be carried out with the DC discon-
nect switch
(internal or external to the inverter)
off.
C
onnection of inputs - Standard Models
The input connection on the inverter without DC disconnect switch can
be done in 2 different ways depending on the number of available input
channels.
TRIO-5.8
TRIO-7.5
TRIO-8.5
No. of input chan-
nels
1
2
2
DC cable gland
2 x M25
For all inverter models, connection is carried out using the DC output termi-
nal block
23
passing the cables internally through the DC cable gland
18
.
The maximum cable diameter accommodated by the DC cable glands is
between 10 to 17 mm, while each terminal clamp on the terminal block
accepts a cable with a maximum cross-section of 16 mm
2
.
In case you need to connect more than one cable (up to a maximum of
3) to the DC terminal block, the special 3 holed gasket supplied may be
installed on the cable gland. This accommodates 3 cables of diameters
from 4mm to 7 mm.
A
B
C
Unused holes in the gasket must be fitted with the appropriate plug that ensures maintenance
of the degree of IP65 insulation.
- +