Connecting A Pc; Grid And System Protection - Delta M50A-260 Installation And Operation Manual

5 Planning the installation
Planning the device communication and plant monitoring

5.7.10 Connecting a PC

A PC can be connected to the inverter via RS485.
You can use the PC to commission the inverter and change the
settings. This requires the following accessories.
Accessories
Standard USB/RS485 adapter
Delta Service Software (DSS)
To select a suitable USB/RS485 adapter, please contact Delta
Customer Service.
You can download the DSS at https://solarsolutions.delta-emea.
com.
Cable requirements
Bell wire. Both ends open.
50
Description
For connecting the PC to the
inverter.
For changing the inverter
settings.
Installation and Operation Manual M50A_260 RPI503M260000 Product version L and M EU V1.3 EN 2023-08-14
5.8

Grid and system protection

1. The German standard VDE-AR-N 4105 requires external
grid and system protection with a coupling switch for PV
systems larger than 30 kVA.
2. Alternatively, VDE-AR-N 4105 allows the use of an inverter
with an internal coupling switch when this switch discon-
nects the inverter from the grid in less than 100 ms.
This inverter meets the requirement in (2). External grid and sys-
tem protection is not required.