8 Disconnecting the Inverter from Voltage Sources
SMA Solar Technology America LLC
Installation ManualSTP50-US-40-IA-en_es-1150
8 Disconnecting the Inverter from Voltage Sources
Prior to performing any work on the inverter, always disconnect it from all voltage sources as
described in this section. Always adhere to the prescribed sequence.
NOTICE
Destruction of the measuring device due to overvoltage
• Only use measuring devices with a DC input voltage range of 1000V or higher.
Procedure:
1. Disconnect the AC circuit breaker and secure it against reconnection.
2. Set the AC load-break switch of the inverter to
position O.
3. Secure the AC load-break switch against
reconnection using a suitable padlock.
4. Set the DC load-break switch of the inverter to
position O.
ENGLISH