aleo
aleo solar Deutschland GmbH
| Osterstraße 15| 26122 Oldenburg | Germany | [email protected]
installation instructions Edition 01/2012 en-GB-Intl (120508b)
Page 31/60
NOTICE
If necessary, only clean soiled sockets, connect-
ions, and plug connections mechanically with a
damp cloth or very carefully with compressed air.
Do not use substances containing oil, fat, or alcohol
for cleaning in order to prevent embrittlement of the
plastic material that can cause dangerous insulation
malfunctions.
Do not use any contact sprays in order to prevent
embrittlement of the plastic material.
Handle all aleo module junction boxes and their
connected cables with care. Avoid both heavy
pressure and tensile loads. Doing so avoids burst
sockets and damage to cable entries which could
destroy the protective insulation of the solar
module and lead to a danger of electric shock.
Furthermore, such damage can significantly reduce
the service life and/or the output of a solar module.
Carefully connect the plug connections and, after plugging in,
check that the plug connection and its seal are firmly
attached. Do not use excessive force when connecting or
disconnecting under any circumstances.
8.4.
Parallel switching, special requirements
If you would like to connect the module strings in parallel,
install the planned string diodes or direct current string fuses
in every module string. Details can be found in Ch. 5.11.1,
'Parallel connection of module strings'.
8.5.
String diodes
8.5.1.
Interconnection
Fig. 15 Interconnection of string diodes, diagram
8.5.2.
Installation
String diodes often come ready-made and equipped with the
right connectors and housing.
Select a time with solar irradiation for the installation and, if
necessary, remove the covers of the modules so that the
module strings create a measurable voltage. This makes it
possible to test the polarity with a suitable voltmeter.
Connect the following:
the anode of the string diode to the positive
⊕
connection of this module string
the cathode of the string diode
6
with the mutual
exit of the parallel connection. This connection
point leads to the positive direct current
connection of the inverter.
8.6.
Installation of direct current string fuses
If the use of direct current string fuses is planned (see
Ch. 5.12.7, 'Direct current string fuses'), please install them
accordingly.
8.7.
Inverter connection
Connect the inverter(s) according to the system design, (see
Ch. 5.12.8, 'Inverter connection').
Pay attention to the polarity of the module strings when
connecting a module string to an inverter. Check the polarity
of the current provided by the module string with a suitable
measuring device before connecting a module string to the
inverter.
Please observe the instructions provided in the inverter
manual.
8.7.1.
Cabling on the AC voltage side
Cabling on the AC voltage side of the inverter is beyond the
scope of this manual. See also: [33], [34], [35], [36], [37],
[38], [39], [40], [41], [42], [43].
6
In a diode that is not ready-made, the cathode is usually
marked with a ring.
GID AS013b
⊕
⊖
∼
=
