SMA WB 3000-21 Installation - Manual (Page 56)

9 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG
56 WB3-5TL-21-IA-en-10 Installation Manual
12. Ensure that no voltage is present on the AC
connecting terminal plate between L and PE using a
suitable measuring device. Insert the test probe
(maximum diameter: 2 mm) in each round opening
of the terminal.
13. Flip the display up to have more space to make the
measurement. Loosen the screw on the display to
do this.
☑ The display clicks into place.
14. Ensure that no voltage is present between all
terminals of the multi-function relay and PE of the
AC connecting terminal plate.
15.
Electrostatic discharges can damage the inverter
The internal components of the inverter can be irreparably damaged by electrostatic discharge.
• Ground yourself before touching any components.
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