SMA SB3.0-1SP-US-40, Руководство по установке, Страница: 49 / 236

6 Electrical Connection SMA Solar Technology AG
Installation Manual SBxx-1SP-US-40-IA-xx-15 49
• If two equipment grounding conductors are to
be connected to one equipment grounding
terminal, guide both equipment grounding
conductors between the washer and clamping
bracket and tighten the screw (TX 25, torque:
6 Nm ± 0.3 Nm (53.10 in-lb ± 2.65 in-lb)).
Here, every equipment grounding conductor
must have contact with an inner edge of the
clamping bracket.
7. Plug the terminal block for the DC connection into the DC-in slot in the inverter.
8. DANGER
Danger to life due to electric arc
The terminal block must be fastened to the slot with two screws. If the terminal block is not
correctly mounted and comes out of the slot, an electric arc can form. An electric arc can
cause life-threatening burns and can cause fire.
• Mount the terminal block using the two screws as described in the following.
9. Tighten the screws of the terminal block using a flat-
blade screwdriver (blade width: 3.5 mm (0.14 in))
(torque: 0.3 Nm (2.65 in-lb)).
COM
DC-in
A+ B+ C+ A− B C
− −
A+ B+ C+ A− B− C−
1
2
10. Ensure that the terminal block is securely in place and the screws are tightened.
11. Strip off the conductor insulation by 18 mm (0.71 in).
12. In the case of fine stranded wire, provide each conductor with a bootlace ferrule.
13.
Connection of conductors of finely stranded wire
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.
ENGLISH