Commissioning SMA Solar Technology AG
56 SB20_25_30HF-IEN102911 Installation Guide
Undervoltage Test
The undervoltage test follows the overvoltage test and the
inverter issues the adjacent display message for
5seconds.
During the test sequence, the voltage limit applied is
shown in the display of the inverter. The voltage limit is
increased successively until the shutdown threshold is
reached and the inverter disconnects from the grid.
Once the inverter has disconnected from the grid, the display successively shows the following values,
each for 10 seconds:
•Disconnection value,
•Calibration value,
•Reaction time.
The change between the first and second display takes places every 2.5 seconds.
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