SMA Solar Technology AG
4 Product Description
Installation Manual
SB13_21TL-IA-en-65
15
4.3 Electronic Solar Switch (ESS)
Depending on the order option, the inverter may be equipped with an ESS. Together with the
DC connectors, the ESS forms a DC switch-disconnector. There are two types of ESS with different
plug designs. The function of the ESS is identical in both cases.
Figure 3: Example of the ESS design with visible metal mounting tabs
When plugged in, the ESS forms a conductive link between the PV array and the inverter. Remove the
ESS to interrupt the DC circuit and pull all DC connectors out to disconnect the PV array completely
from the inverter.
Degree of protection: IP65
The product is protected against dust intrusion and water jets from all angles.
The product is suitable for outdoor installation.
RAL quality mark for solar products
The product complies with the requirements of the German Institute for
Quality Assurance and Certification.
C-Tick
The product complies with the requirements of the applicable
Australian EMC standards.
Item
Description
A
Depending on the type of ESS, the metal mounting tabs in the plug will either be visible
or enclosed in a plastic casing.
B
Label with the operating principle of the ESS:
•
When the Electronic Solar Switch is plugged in, the DC circuit is closed.
•
To interrupt the DC circuit, you must perform the following steps in the order
given:
–
Remove the ESS.
–
Release and disconnect all DC connectors.
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Explanation
