8 Recommissioning the Inverter
9. Set the DC load-break switch to position O so that
both mounting screws are visible. In case the old DC
load-break switch is defective, the new one from the
spare-part set can be used.
10. Insert the DC load-break switch firmly into the recess on the inverter. During this process, the
DC load-break switch must still be in position O and aligned so that the screws are positioned
over the threads.
11. Tighten the 2 screws using an Allen key (AF 3,
torque: 2 Nm ± 0.2 Nm).
12. Turn the DC load-break switch of the inverter to
position I. If available, switch on the external DC
switch.
13. Switch on the circuit breaker of all 3 line conductors.
14. If a multifunction relay is used, reconnect the supply voltage to the load.
☑ All 3 LEDs start to glow and the start-up phase begins. The start-up phase may take
several minutes.
☑ The green LED is glowing. If applicable, the display alternates between the firmware
version, the serial number of the inverter, the NetID, the configured country data set and
the display language.
28
STPTLEE-STPTL-10-BPDCLS-RM-xx-10
SMA Solar Technology AG
Replacement Manual