PV Powered 3000 Manual de Instalação descarregar pdf (Página 44)

Commissioning SMA Solar Technology AG

44 SB25_30-IA-IEN115050 Installation Manual

Minimum Frequency

In the last step, the inverter tests the minimum frequency.

During the test sequence, the frequency limit applied is

shown in the display of the inverter.

The frequency limit is increased successively until the

disconnection threshold is reached and the inverter

disconnects from the mains.

Once the inverter has disconnected from the mains, the display successively shows the following

values one after the other:

•Disconnection value,

•Calibration value,

•Reaction time,

• Current power frequency.

Once the inverter has carried out the four tests, it switches to "MPP operation (MPP)" mode. The

original calibration values are then re-set and the inverter automatically connects to the mains. If you

would like to carry out the test again, you must disconnect the inverter, i.e. disconnect it on the AC

and DC sides and then later recommission it. You can then restart the self-test as described in

Section 6.3.1 "Starting the Self-test by Tapping" (page40). The inverter starts again the test sequence

as described in Section 6.3.2 "Completion of the Self-test" (page40).

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PV Powered 3000 Manual de Instalação Página 44