14 SB3-5TL-21-BE-en-10 Operating Manual
4 Product Description SMA Solar Technology AG
Symbols on the inverter, the type label and the ESS
D
Electronic Solar Switch (ESS)
*
The ESS and the DC connectors form a DC load-break switch. When plugged
in, the ESS forms a conductive path between the PV array and the inverter.
Removing the ESS interrupts the DC electric circuit and removing all DC
connectors disconnects the PV array completely from the inverter.
E Lower enclosure lid
F Upper enclosure lid
* Optional
Symbol Explanation
Green LED: operating state of the inverter
Green LED is glowing: the inverter is in operation.
Green LED is flashing: the requirements for the connection to the utility grid
have not been met.
Red LED: observe the documentation
Red LED is glowing: an error has occurred that must be rectified. Read the
service manual at www.SMA-Solar.com.
Blue LED: active communication via Bluetooth
Danger
This symbol indicates that the inverter must be additionally grounded if
additional grounding or equipotential bonding is required locally
(see Section 6.3.3, page 29).
QR Code
®
Links to additional information on the inverter can be found at
www.SMA-Solar.com.
Operating the inverter without the lower enclosure lid is prohibited.
Always operate the inverter with the lower enclosure lid.
Item Explanation
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