7 opening and closing, 1 safety, 2 opening the inverter – SMA SB 3300-11 Installation User Manual
Page 41: Opening and closing, Safety, Opening the inverter, 1 safety 7.2 opening the inverter
SMA Solar Technology AG
Opening and Closing
Installation Manual
SB33-38-11-IA-en-62
41
7 Opening and Closing
7.1 Safety
7.2 Opening the Inverter
1. Disconnect the miniature circuit-breaker and secure against re-connection.
2. If an external DC switch-disconnector is present, disconnect the external DC
switch-disconnector.
3. If an Electronic Solar Switch is installed, pull it
downwards, slightly towards the wall.
4. Using a current probe, ensure that no current is
present at any of the DC cables.
☑ If current is present, check the installation.
DANGER!
Risk of lethal electric shock.
Before opening the inverter, observe the following:
• Ensure that no voltage is present on the AC side.
• Ensure that neither voltage nor current is present on the DC side.
NOTICE!
Static discharges can damage the inverter.
The internal component parts of the inverter can be irreparably damaged by electrostatic
discharge.
• Ground yourself before touching a component part.