System Design Without Integrated Dc Switch; Overview Of The Connection Area - Zeversolar Evershine TL3680 Installationshandbuch

5.2 System design without integrated DC switch

Local standards or codes may require that PV systems are fitted with an external
DC switch on the DC side. The DC switch must be able to safely disconnect the
open-circuit voltage of the PV array plus a safety reserve of 20%.
Install a DC switch to each PV string to insulate the DC side of the inverter. We
recommend the following electrical connection:

5.3 Overview of the connection area

A B
Object Description
A DC switch (optional): connect and disconnect the PV module.
B DC input: plug-in connector to connect the strings.
C RJ45 interface: connect the monitoring device.
D USB（MCU）: update or rewrite the MCU firmware.
E AC output: plug-in connector to connect the grid.
Installation and Operating Instructions
D C E
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