SMA SSM8-21-BS - Manual (Page 38)

7 Commissioning SMA Solar Technology AG
38 SSMxx-21-IA-BS-JP-en-20 Installation Manual
7 Commissioning
7.1 Safety during Commissioning
7.2 Commissioning the Sunny String-Monitor
7.2.1 Requirements for Commissioning
The commissioning report must be completed during commissioning.
Requirements:
☐ The DC load-break switch must be switched off.
☐ The DC main cables must be connected to the inverter or main DC distribution box and disconnected from voltage
sources.
☐ There is no reverse voltage from the inverter.
☐ All connections must be made in accordance with this manual (see Section 6 "Electrical Connection", page 23).
☐ The correct polarity of all connections must be ensured and documented.
☐ The floor around the Sunny String-Monitors must be firm and freely accessible.
7.2.2 Terminating the Data Cable
The last Sunny String-Monitor of each string and the Ethernet hubs in the Sunny Central must be terminated.
The Sunny String-Monitors are not terminated upon delivery so that they can be configured as required on site. The
Ethernet hubs in the Sunny Central are terminated upon delivery.
'$1*(5
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the Sunny String-Monitor. Touching live components results in death
or serious injury due to electric shock.
• Wear personal protective equipment when working on the Sunny String-Monitor.
• Do not touch live components.
• Before performing any work, always disconnect the Sunny String-Monitor from voltage sources unless supply
voltage is absolutely necessary.
– Switch off the DC load-break switch in the Sunny String-Monitor.
– Remove the DC fuses in the central inverter or main DC distribution box when the power is switched off. Use the
LV/HRC fuse handle.
– Only open the fuse holders in the Sunny String-Monitor when the power is switched off.
• Ensure that the device cannot be reconnected.
• Ensure that no voltage is present.
• Ground and short-circuit the device.
• Cover or isolate any adjacent live components. Protective covers must always be mounted.
Commissioning is to be performed by Service employees only
Commissioning of the Sunny String-Monitor must be performed by Service employees of SMA Solar Technology AG
or their authorized representatives only.