SMA NR-PL-BFS5-01 Instructions De Remplacement page 18

7 Commissioning the Inverter
7 Commissioning the Inverter
Requirements:
☐ The AC circuit breaker must be correctly rated and mounted.
☐ The inverter must be correctly mounted.
☐ All cables must be correctly connected.
☐ Unused enclosure openings must be sealed tightly with sealing plugs.
Procedure:
1. Carry out the necessary tests according to the locally applicable laws, standards and
directives for the correct recommissioning after power assembly replacement. Take the
requirements for component replacements into account (see Section 2.2 "IMPORTANT
SAFETY INSTRUCTIONS", page 7).
2. Ensure that the grounding conductor in the inverter is correctly connected and functions
properly.
3. Ensure that the DC load-break switch is turned to position 0.
4. For STP 50-US-40 / STP 33-US-41 / STP 50-US-41 / STP 62-US-41: Ensure that the AC load-
break switch is turned to position 0.
5. To avoid invalid serial numbers from being sent to the data logger, commission the inverter
without being connected to the local network first. To do this, ensure that the RJ45 connection
to the network is not established.
6. Position the enclosure lid of the AC-Connection Unit
on the AC-Connection Unit and first tighten the
upper-left and lower-right screws, and then the
remaining screws crosswise (TX 25, torque: 6 Nm
(53 in-lb)).
7. Position the enclosure lid of the DC-Connection Unit on the DC-Connection Unit and first
tighten the upper-left and lower-right screws, and then the remaining screws crosswise (TX 25,
torque: 6 Nm (53 in-lb)).
8. Connect the DC connector to the inverter in its original position.
☑ The DC connectors snap into place.
9. Ensure that all DC connectors are securely in place.
10. For STP 50-US-40 / STP 33-US-41 / STP 50-US-41 / STP 62-US-41: Turn the AC load-break
switch of the inverter to position I.
11. Switch on the AC circuit breaker.
☑ All 3 LEDs light up. The start-up phase begins.
☑ All 3 LEDs go out again after approximately 90 seconds.
18 STP50-40-BFS-RM-xx-10
SMA Solar Technology AG
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Replacement Manual