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10 | Electrical connection | Grounding | Mainenance and care
The connection cables should be installed in such a
way that the minimum bend radius of 60 mm is com-
plied with.
The connection cables are equipped with a high-qual-
ity plug system (original MC4) for photovoltaics
which latch on if correctly connected. The plugs are
marked with their respective polarity symbols (see
datasheet).
Ensure the polarity symbols are in the right position
when connecting plug connectors and modules and
when connecting solar modules to the inverter. Incor-
rect polarity can permanently damage all technologi-
cal components in the system.
All solar module frames and the support structure
must feature highly conductive connections to a
protective grounding system to eliminate the risk of
electric shocks. We recommend installing the ground-
ing system outside the building. Observe local statu-
tory regulations and recommendations given by the
inverter manufacturer and your insurance company.
Important note!
Never remove or insert plug-in contacts
when the system is under load!
7 Grounding
Particularly in exposed locations, sufficient lightning
protection is recommended. Integration into existing
lightning-protection systems must occur in observance
of current country-specific norms and regulations. The
respective drill holes for grounding are marked on the
reverse side of the module frame.
Please perform the following grounding measures:
Important notice!
Bosch Solar Module c-Si M 60 EU I Bosch Solar Module c-Si M 60 S EU I Bosch Solar Module c-Si P 60 EU I Bosch Solar Module c-Si M 48 EU I Bosch Solar Module c-Si M 48 S EU
Module manufacturer code 14, 17, 23
Earthing / Grounding Requirements
In accordance with AS/NZS 5033 clause 4.4.2.2 PV mo-
dules and mounting frame earth connections are to be a
purpose-made fitting providing earthing or bonding
connections or purpose-made penetrating washers or
equivalent between the PV modules and mounting frame
for the connection of dissimilar metals purpose-made
fittings are installed to manufacturer's instructions.
Cable lugs, earthing termination and bonding cables
are to be fixed by stainless steel bolts, washers and
penetrating washers to aluminium frames.
Earthing or bonding connections MUST BE arranged
so that the removal of a single module earth connec-
tion will not affect the continuity of the earthing or
bonding connections to any other module.
8 Maintenance and care
Little maintenance and care is required to deliver opti-
mum solar module performance. We recommend the
following items are checked or the following action
taken on a half-yearly basis to ensure optimum system
performance:
If modules are heavily soiled or dirty in places, from
bird droppings, for instance, it is recommended to
clean module glass surfaces with a soft brush and
lime-free water at module temperature. Do not use
aggressive cleaning agents, acids or alkaline solu-
tions.
Under no circumstances should there be increased
pressure during cleaning e.g. by pressing a brush so
strongly during cleaning, that this can lead to damage
to the antireflective coating of the glass for example.
In the case of intensive soiling, repeated cleaning or
soaking is recommended.
Any finger prints on the anti-reflection solar glass can
be removed with a microfiber cloth and distilled
water or isopropanol.
Check electrical and mechanical connections to
ensure they are clean, tightly fastened and intact. Any
anomalies must be remedied immediately.
au
Bosch Solar Energy AG
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