2
Protection diodes
The shading of a cell may give rise to a reverse voltage in the cell. This cell would, therefore consume power generated by the other cells in series and
an unwanted heating of the shaded cell may occur. This effect, called hot point effect, will be highest at highest incident radiation on the rest of the cells,
and in an extreme case the cell could break up due to over-heating.
The use of protection or by-pass diodes reduces the risk of the shaded cells heating up by limiting the current, which can run through them and in this
way preventing their breakage.
In general, modules made by Korax Solar with 24 or more cells in series are supplied with protection diodes, which are located in the connection boxes.
Connection Boxes
The connection boxes of the modules are located at the rear side of the modules. As specified earlier, they are made of a durable (polycarbonate) plastic,
having a leak tight cover, providing IP-65 safety. The polarity of cable connection marked on the top of the boxes. Normally the modules come without
cabling. The standard Korax Solars cabling system (on request) includes a 400 mm long positive and a 700 mm (for KS-75 family) or 1000 mm (for KS-
150 family) negative cable. The Korax Solar standard cable is double insulated, flexible, the upper layer is UV resistant. The standard cross section of
the cables are 4 mm
2
. The sealing in the cable glands can host of maximum 6.5 mm OD cable. The polarity of connections must be respected during the
assembly.
CAUTIONS
Avoid electrical hazards when installing,
wiring, operating and maintaining the
module.
A modules generates DC electricity when
exposed to sunlight or other light sources.
It is recommended that the module
remains packed in the box until time of
installation.
Do not touch the terminals while module is
exposed to light or during installation.
Provide suitable guards to prevent contact
with 30 VDC or greater. Use properly
insulated tools only.
When installing or working with module or
wiring, cover module face completely with
opaque material to halt production of
electricity.
Work only under dry conditions, with a dry
module and tools.
Do not stand or step the
module.
Do not drop the module
or allow objects to fall on
module.
Never leave a module
unsupported
or
unsecured. If a module
should fall, the glass can
break. A module with
broken glass cannot be
repaired and must not be
used.
Do not drill holes into module frame as it
will void warranty.
Avoid sharp edges.
Do not artificially concentrate sunlight on
the module.
