SMA SB3.0-1SP-US-41 Installation Manual page 50

6 Electrical Connection
Connection of conductors of finely stranded wire
13.
To connect conductors made of finely stranded wire, each terminal point must be opened.
• First insert the connector into the terminal point all the way to the lock (round
opening). Then insert a flat-blade screwdriver (blade: 3.5 mm (0.14 in)) as far as it
can go into the actuation shaft (rectangular opening). Hereby the lock opens and
the conductor can be placed into the terminal point as far as possible. After the
connection has been made, the flat-blade screwdriver must be pulled out of the
actuation shaft.
14.
Fire hazard due to faulty conductor connection
If the conductors are inserted into the actuation shafts (right-angled openings), a fire may
occur during inverter commissioning.
• Connect the conductors to the terminal block as described in the following.
15. Connect the conductors to the terminal block in
accordance with the labeling. Insert each conductor
into the corresponding terminal point (round
opening) up to the stop. Always connect the positive
terminal and the negative terminal of a string to the
same input, and keep in mind that the terminals C+
and C- of inverters with two DC inputs must not be
assigned.
16. Ensure the conductors are plugged into the terminal
points (round openings) as far at is will go and not
into the actuation shafts (rectangular openings).
17. Ensure that the terminal points are allocated to the correct conductors.
18. Ensure that the conductors are plugged completely into the terminal points up to their
insulation.
50 SBxx-1SP-US-41-IA-xx-10
WARNING
SMA Solar Technology AG
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Installation Manual