Disconnecting The Inverter From Voltage Sources - SMA SB3.0-1SP-US-40 Instrucciones De Servicio

4 Disconnecting the Inverter from Voltage Sources
4 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.
Destruction of the measuring device due to overvoltage
• Only use measuring devices with a DC input voltage range of 600 V or higher.
1. Disconnect the AC circuit breaker and secure it against reconnection.
2. Set the DC load-break switch of the inverter to
O.
3. Secure the DC load-break switch against
reconnection using a suitable padlock.
4. If the multifunction relay is used, switch off any supply voltage to the load.
6 SB30-77-1SP-US-40-AT-PU-SG-xx-11
SMA Solar Technology America LLC
Service Manual