SMA SSM16-11 - Manual (Page 43)

SMA Solar Technology AG 7 Commissioning
Installation Guide SSM16-24-IA-IEN105120 43
7 Commissioning
7.1 Safety
Electric Shock
The Sunny String-Monitor is connected to high voltages. Work on the Sunny String-Monitor is only
allowed if the power is disconnected and in compliance with the guidelines that apply at the
installation location.
• Disconnecting the device:
– Remove the DC fuses in the central inverter or main DC distributor, such as the Sunny Main
Box, in a no-load condition.
– Switch off the DC circuit breaker in the Sunny String-Monitor.
– Only open or close the isolation terminals in the Sunny String-Monitor in a no-load condition.
– Only insert or remove the fuses when wearing personal protective gear.
– Only plug in or unplug the solar plug when no current is present.
• Ensure that the device cannot be reconnected.
• Ensure that no voltage is present in the system.
• Ground and short-circuit.
• Cover or safeguard any adjacent live components. Protective covers must always be fitted.
7.2 Preparing and Carrying Out Commissioning
7.2.1 Requirements for Commissioning
The commissioning report must be filled out during commissioning. The commissioning report is
enclosed with the Sunny Central.
Requirements:
☐ The DC circuit breaker is disconnected.
☐ The DC main cables are connected to the inverter or DC distribution box and are activated.
There is no reverse voltage from the inverter.
☐ All connections are made according to this manual (see section 6 ”Electrical
Connection”, page 29).
☐ The ground underneath the Sunny String-Monitors is firm and can be walked on.
7.2.2 Terminating the Data Cable
In each case, the last Sunny String-Monitor of a string and the hubs in the Sunny Central are
terminated.