electRicAl cOnnectiOn AnD gROunDing
SOLARWATT solar modules are equipped at the factory with
high-quality solar cables and reverse-polarity protected,
shock proof plug connectors. The connection of the string line
has to be done with identical connectors manufacture and
type as to the module connecting cable. To be able to ensure
this the module connector at the beginning and the end of
the string may be removed and replaced (More information in
the download area at www.solarwatt.net). The allowed cross-
section and outer-diameter of the cable and instruction of
the manufacturer have to comply. The following table shows
matching cablesets, plugs, cables and installation accesso-
ries. When connecting the modules, ensure that the plugs en-
gage with an audible click. The common bending radii of at
least 5 times the outer cable diameter must be complied with.
It is recommended to lay the cable firmly so that they are not
subjected to mechanical loads. The cable and connector must
not exposed to moisture and will not rest on the ground or
floor. To ensure safety and compliance with the technical data
of the products, only original tools of the manufacturer may
be used in the self-assembly of solar cables.
Connection of modules in series is only permitted up to the
maximum system voltage as listed in applicable data sheet.
The maximum number of solar modules installed parallel
without string fuse is two. Please comply with the value spec-
ified in the data sheet for reverse current feed and only use
standardized photovoltaic cables (recommendation: at least
4 mm² cable cross-section). The solar modules correspond to
application class A and can therefore be operated in systems
with dangerous DC voltages (larger than 120 VDC in accor-
dance with IEC 61730). Solar modules in this application class
can be used in systems with unrestricted access, the relevant
regulations must be complied with. SOLARWATT solar mod-
ules qualified within this application class in accordance with
IEC 61730 fulfill the requirements of protection rating II with
correct electrical installation.
Module schematic, front view
Connection lines
String connector
Junction box with bypass diodes
Cell connector
Solar cells
WARning
Solar modules generate electrical energy on the front side during incidence of light.
A system with multiple solar modules can generate life-threatening voltages and
electrical currents. Do not touch the electrical connections or cable ends while the solar
module is exposed to light.
Subject to change | © 2016 SOLARWATT GmbH | AZ-TM-PMS-0973 | Rev 008 | Status: 11/2016
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