SMA WB 5000A-11 Installation - Manual (Page 54)

Commissioning SMA Solar Technology AG
54 WB5A_6A-IA-IEN114540 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 is increased step by step until the
disconnection threshold is reached and the inverter
disconnects from the power distribution grid.
Once the inverter has disconnected from the power
distribution grid, the display successively shows the following values:
• Disconnection value,
• Calibration value,
• Reaction time,
• Current power frequency
When the inverter has carried out all four tests, it switches to the "Turbine" operating mode. The
original calibration values are then reset and the inverter automatically connects to the power
distribution grid. If you wish to repeat the test, you must switch off the inverter, i.e. disconnect it on the
AC and DC sides, and then recommission. You can then restart the self-test as described in Section
6.3.1 "Starting the Self-Test by Tapping" (page 50). The inverter recommences the test sequence as
described in Section 6.3.2 "Completion of the Self-test" (page 51).