EN
64
5.10.1.3 Connection of inputs
To carry out the connections, the cables must be passed through the DC cable glands
(18)
.
Connection of DC cables is made on the DC input connection busbar
(17)
.
The bolts on the DC input connection busbar
(17)
accepts cable lugs as per the following table:
DC input cable
Cable diameter range
19 - 28 mm
Conductor cross section
min. 50mm
2
(in case of 2 couples of DC cables)...max 185mm
2
min. 90mm
2
(in case of single couple of DC cables)...max 185mm
2
Cable lug dimensioning
for M10 Stud
a = 10.5 mm (min)
b = 40 mm (max)
b
a
Conductor material
copper or aluminum
ATTENTION –
A
The DC input connection busbars
(17)
are in copper tin-plated; therefore if aluminum cables are used, the correct
coupling with the copper bars must be guaranteed by using appropriate bi-metallic cable lug.
In order to connect the DC input cables performs the procedure as follow:
• Open the wiring box front cover
(07)
“Opening the wiring box cover”
)
• Remove the internal DC Protective shield
(60)
by removing the two M5 screws.
PVS-100_120-TL_B2
60
• Unscrew the DC cable glands
(18)
• Introduce the cables
• Install the cable lugs on the cables
• Connect the DC cables to the busbars
(17)
with a tightening torque of 25 Nm. During this operation connect the cables with the right
polarity and MPPT.
MPPT 1
–
MPPT 1
+
MPPT 2
+
MPPT 2
–
17
• Once connection to the DC input connection busbar
(17)
has been completed, retighten the cable gland firmly (8.0 Nm torque) and
check seal.
• Re-install the DC protective shield
(60)
by using the M5 screws previously removed (torque of 3 Nm).
