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Commissioning SMA Solar Technology AG

38 SB25_30-IA-IEN115050 Installation Manual

6 Commissioning

6.1 Commissioning the Inverter

1. Check the following requirements before commissioning:

– The inverter is securely in place.

– Correct connection of the AC cable (mains)

– Complete connection of all DC cables (PV strings)

– Unused DC inputs are closed using the corresponding DC connectors and sealing plugs

– The enclosure lid is securely screwed in place.

– External DC switch-disconnector additionally connected if Electronic Solar Switch available,

the Electronic Solar Switch (ESS) is firmly in place

– The miniature circuit-breaker is correctly laid out

2. Switch on the miniature circuit-breaker.

☑ All three LEDs are lit or flashing: the startup phase is starting.

☑ Green LED is lit: commissioning was successful.

☑ Green LED flashes in case of insufficient irradiation: mains connection conditions have not

yet been reached. Wait for sufficient irradiation.

☑ The red or yellow LED is lit or flashing: a fault has occurred. Proceed to step 3.

3. Read Section 9 "Troubleshooting" (page52) and if necessary, eliminate the error or fault.

A Green LED Operation

B Red LED Earth fault or varistor defective

C Yellow LED Fault

Self-test in accordance with DK 5940, Ed. 2.2 during initial start-up

(applies to Italy only)

The Italian DK 5940 standard prescribes that an inverter can only operate on the power

distribution mains after the disconnection times for overvoltage, undervoltage, minimum

frequency and maximum frequency have been checked.

Start the self-test as described in Section 6.3 "Self-test in Accordance with DK 5940, Ed.

2.2 (Applies to Italy Only)" (page40). The test takes approx. 8minutes.

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PV Powered 3000 Manual de Instalação Página 38