SMA PVO-N-20 - Manual (Page 44)

9 Disconnecting the SMA PV Offset Box from Voltage Sources SMA Solar Technology AG
44 PVO-BOX-IA-en-10 Installation Manual
9. Unscrew all the enclosure lid screws and remove the lid.
10. Ensure that no voltage is present between L and N on the AC terminal using a suitable
multimeter.
11. Ensure that no voltage is present between L and FE on the AC terminal using a suitable
multimeter.
12. Ensure that no voltage is present between any fault indication relay terminal and FE using a
suitable multimeter.
8.
Damage to the SMA PV Offset Box due to electrostatic discharge
The components inside the SMA PV Offset Box can be destroyed by electrostatic discharge.
• Earth yourself before touching any components. Do not use the enclosure of the
SMA PV Offset Box for this purpose, as it is not earthed.