Installation guide solar modules
V1 – April 2015
16 - 19
6.1
Electrical Connections
Never open the connection box! The modules are already fitted with all necessary wires and connectors.
CAUTION:
System design should consider the potential increased power output (Pmax) and current (Isc) due to the
modules bifacial abilities. Additional power and currents beyond the STC rating are possible. See the
Electrical Specifications on the data sheet for electrical parameters in presence of albedo. All protections,
wiring, equipment ratings, and inverters should be sized accordingly o the product ratings, maximum
expected output and required protection factors.
6.2
Ensure correct wiring:
o
Only connect modules with the same rated current in series and modules with the same rated
voltage in parallel.
o
The modules may only be operated at the allowable system voltage; operation at a higher voltage
is not recommended.
o
The integrated connection cables are UV resistant. The conductor cross-section of the connection
cables is 4 mm².
o
For wiring, the connection cables are fitted with prefabricated connectors, which are protected
against reverse polarity.
o
Keep the total area of all conductor loops as low as possible in order to reduce the voltages due to
indirect lightning strikes.
o
Always carry out a careful final check of the wiring prior to commissioning the generator. If the
measured open circuit voltage diverges from the default value, a wiring error has occurred. Check
for correct polarity.
o
Merge the connectors together correctly: connectors may only merged together when dry. Also
make sure that a gap-free connection is possible and to respect maximum system voltage
calculated at the expected lower operating temperature
o
When connecting the modules in parallel, a corresponding overcurrent protection must be used.
This can be achieved with direct current fuses, which prohibit return currents greater than 15 A.
o
Furthermore, the connection requirements and design regulations of the inverter manufacturer
must be observed.
o
With multi rows structure, connect horizontal series of modules to different MPPT to reduce losses
due to mismatch on reflected light on back side
6.3
Only use suitable materials:
The system may only be wired using special solar wires and suitable connectors. It is very important that all
necessary materials are in a flawless electrical and mechanical condition. Only use single core wires and
Summary of Contents for MBA-GG60 BiSoN Series
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