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SMA Solar Technology AG
Maximum Frequency
The maximum frequency test follows the undervoltage test
and the inverter issues the adjacent display message for
5 seconds.
During the test sequence, the frequency limit applied is
shown in the display of the inverter. The frequency limit is
reduced 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.
Installation Guide
SB20_25_30HF-IEN102911
Commissioning
57
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