EN
67
• Turn the DC disconnect switches
(15)
to OFF.
• Check for the absence of installed fuses on the positive side
string fuses board
(19)
-
if present remove it!
• Connect the strings and check that the GREEN LED
corresponding to each positive fuses activates. The string will
turn out to be inverted if the RED LED is ON. Check the strings
one by one so to safely check which strings are inverted.
• After all the input strings have been checked, remove all
connected strings and check that all LEDs will switch OFF.
WARNING –
B
Pay attention to disconnect all connected
input strings; otherwise high voltages will be present inside
the inverter.
• Install the fuses (supplied) on the string fuses board
(19)
using the
supplied fuse pliers.
• Re-install the DC protective shield
(60)
by using the M5 screws
previously removed (torque of 3 Nm).
5.10.2.4 Installation procedure for quick-fit connectors
In the inverter models, where the quick-fit connectors are used, is
possible to find one of the following four types:
• Weidmüller PV-Stick
• Weidmüller WM4
• MultiContact MC4
• Amphenol H4.
The model of connectors installed on your inverter must be
matched by the same model of the respective corresponding parts
to be used (check the corresponding part on the manufacturer’s
website or with Fimer).
WARNING –
B
To avoid damage to the equipment, when
crimping cables to the connectors, pay particular attention
to polarity.
ATTENTION –
A
According to IEC 62548 (Photovoltaic (PV)
arrays – Design requirements), connectors mated together
in a PV system shall be of the same type from the same
manufacturer, i.e. a plug from one manufacturer and a socket
from another manufacturer or vice versa shall not be used
to make a connection. Refer to document “String inverters
- Product manual appendix” available on the website to find
out the manufacturer and model of quick fit connector used
on the inverter.
ATTENTION –
A
Using mating parts that are not compliant
with the quick fit connector models on the inverter could
cause serious damage to the unit and lead to invalidation of
the warranty.
NOTE –
D
Complete assembly instructions and specification
of quick-fit connectors could be found on manufacturer
website.
Installation of WEIDMÜLLER PV-Stick quick-fit connectors:
ATTENTION –
A
Installation of Weidmüller PV-Stick
connectors does not require any special tooling.
• Strip the cable to which you want to apply the connector (after
verifying that it complies with the connector limits).
15.0...16.5mm
*4...6mm
5.5...7.5mm
2