SMA SB 3300 Installation - Manual (Page 37)

SMA Solar Technology AG Commissioning
Installation Guide SB33_38-IEN111851 37
6 Commissioning
6.1 Commissioning the Inverter
1. Check the following requirements before commissioning:
– The inverter is firmly fastened
– Correct connection of the AC cable (grid)
– Full connection of the DC cables (PV strings)
– Unnecessary DC inputs are closed with the corresponding DC connectors and sealing plugs.
– The enclosure lid is securely screwed in place
– The Electronic Solar Switch (ESS) is securely plugged
– The line circuit breaker is laid out correctly
2. Switch on the line circuit breaker.
☑ Green LED glows: commissioning has been successful.
or
☑ Green LED flashes in case of insufficient irradiation: grid connection conditions have not yet
been reached. Wait for sufficient irradiation.
or
☑ The red or yellow LED is glowing or blinking: an error has occurred. Proceed to step 3.
3. Read section 9 ”Troubleshooting” (page 52) and if necessary eliminate the error or
disturbance.
A Green LED Operation
B Red LED Ground fault or varistor
defective
C Yellow LED Error
Self test in accordance with DK 5940, Ed. 2.2 for initial commissioning (applies
to Italy only)
The Italian DK 5940 standard prescribes that an inverter can only operate on the power
distribution grid after the disconnection times for overvoltage, undervoltage, minimum
frequency and maximum frequency have been checked.
Start the self-test as described in the section 6.2 ”Self-Test in accordance with DK 5940,
Ed. 2.2 (applies to Italy only)” (page 38). The test takes approx. 8 minutes.