SMA Solar Technology AG
2 Safety
Installation Manual
SPW-WebconPB-IA-en-10
9
2.4 Safety Precautions
Electric Shock
Lethal voltages are present in the conductive parts of the inverter.
• Prior to performing any work on the inverter, disconnect the inverter from any voltage sources
on the AC and DC sides (see inverter installation manual). Observe the waiting time to allow
the capacitors to discharge.
Burn Hazards
Some parts of the inverter enclosure can get hot during operation.
• During operation, touch the inverter on the enclosure lid only.
Environmental Influences
When closed and with the ESS plugged in, the inverter has the degree of protection IP65. The inverter
is thus protected against dust intrusion and water penetration. Dust intrusion and water penetration
can damage the inverter.
• If the ESS is not plugged in, the inverter must be protected against dust and water.
• Firmly plug ESS in again after performing any work on the inverter.
Electrostatic Discharge
By touching electronic components, you can damage or even destroy the inverter through electrostatic
discharge (ESD).
• Earth yourself before touching any inverter components.
Disturbance of Data Transmission due to AC Cables
During operation, AC cables generate an electromagnetic field which may induce interference in
plant communication.
• Lay the communication cables using suitable fastening material and with a minimum clearance
of 50 mm to the AC cables.
2.5 Operating Information
Selecting a Suitable Internet Tariff for Small Plants
When using the new Webconnect function, a constant Internet connection is required.
Depending on the quality of the Internet connection, the transmission volume for an inverter is between
150 MB and 550 MB per month. When using the plant overview in Sunny Portal with live data
display, there is an additional data volume of 600 kB per hour.
• SMA recommends using an Internet tariff with a flat rate.
• Since Sunny Portal is permanently connected to the Internet, time-based billing systems should
be avoided. High costs could be incurred.
