SMA SB Series - Mounting the Power Unit

7 Mounting the Power Unit
SMA Solar Technology AG
Replacement ManualSBxx-1SP-US-41-PU-RM-xx-1014
7 Mounting the Power Unit
1. Ensure that the DC load-break switch is switched off (see Section5, page10).
2. Plug the new Power Unit into the Connection Unit. Ensure that the screw holes on the left and
right sides of the PowerUnit are directly over those of the ConnectionUnit; and the cables
protruding from the PowerUnit must not be pinched.
3. Tighten two screws with two washers on the right and left side of the PowerUnit (TX25)
(torque: 6Nm ± 0.3Nm (53in-lb ± 2.65in-lb)).
4. If the enclosure lid of the new Power Unit is a transport lid (see information on the enclosure
lid), replace the transport lid of the new Power Unit with the enclosure of the defective Power
Unit:
• Unscrew all screws of the upper enclosure lid
(TX25) and remove it.
• Position the upper enclosure lid with the six
screws and serrated conical spring washers on
the enclosure and tighten it in the specified
order (TX25, torque: 6Nm (53in)).
1
2
3
4
5
6
5. Pull the ribbon cable used to connect the
communication assembly to the PowerUnit into the
ConnectionUnit, and plug it into the jack on the
communication assembly.
COM
SPS
AC-out
D-IN
SPS
A B
M1
X1 X2
M2
ANT.
FCC ID: SVF-KP20
IC: 9440A-KP20
ENGLISH