SMA WINDY BOY 3300 - Page 45

SMA Solar Technology AG Commissioning
Installation Manual WB33-38-IA-IEN120940 45
Minimum frequency
Finally, the inverter tests the minimum frequency. During
the test sequence, the frequency limit applied is shown in
the display of the inverter.
The frequency is increased step by step until the
disconnection threshold is reached and the inverter
disconnects from the electricity grid.
Once the inverter has disconnected from the electricity grid, the display alternates between the
following values:
•Disconnection value,
•Calibration value,
•Reaction time,
• Current power frequency.
Once the inverter has carried out all four tests, it switches to the "Turbine Mode". The original
calibration values are then reset and the inverter automatically connects to the electricity grid. If you
wish to carry out the test again, you must switch off the inverter, i.e. disconnect it on the AC and DC
sides, and then restart it. You can then restart the self-test as described in Section 6.3.1"Starting the
Self-Test by Tapping" (page41). The inverter restarts the test sequence as described in Section
6.3.2"Completion of the Self-test" (page42).