• The inverter HYD 5K...20KTL-3PH has a built-in AFI (univ.
sensitive residual current protection). If an external AFI is
required, we recommend an AFI type A featuring a
residual current of 100 mA or higher.
• Please follow the national rules and regulations for the
installation of external relais or circuit breakers!
The AC cable should be correctly dimensioned in order to ensure that
the loss of power in the AC cable is less than 1% of the rated output.
If the AC cable resistance is too high, then the AC voltage will
increase; this may cause the inverter to become disconnected from
the power grid. The relationship between the leakage power in the AC
cable and the cable length, the cable cross-section, is displayed in the
following illustration:
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