System; Data Evaluation And Communication - Delta M Series Operation And Installation Manual

2.1

System

The content of renewable energy with respect to overall power consumption worldwide is increas-
ing annually by approximately 25%. The reason for this rise can be primarily attributed to the con-
stantly increasing demand for power, the increasing interest in environmentally friendly technolo-
gies, as well as the increasing costs of non-renewable energy.
By the use of renewable energy sources, the earth's atmosphere can be enormously relieved of
increases in CO2 and other harmful gases which result from power generation.
The solar inverter converts direct current from the solar cells into alternating current. This enables
you to feed your self-produced solar energy into the public grid.
Thanks to efficient MPP tracking, maximum capacity utilization of the solar energy plant is en-
sured even in cases of misty and cloudy skies.
The string concept means that PV modules are always connected in series (in a string) and/or
that strings with the same voltage are connected in parallel to the solar inverter with the aim of
significantly reducing the photovoltaic system's cabling requirements.
The fact that the modules are connected in strings also means that the photovoltaic system can be
perfectly matched to the solar inverter's input voltage range.
The inverter is transformerless type without galvanic isolation. Therefore, the inverter may only be
operated with ungrounded PV arrays. Furthermore, the PV array must be installed in accordance
with the NEC690.35 (Ungrounded Photovoltaic Power Systems) and the locally valid regulations for
ungrounded PV arrays. Additionally, the PV array (PV modules and cabling) must have protective
insulation and the PV modules used must be suitable for use with this inverter. PV modules with
a high capacity to ground may only be used if their coupling capacity does not excessed 1,200 nF
with 60Hz grid.
2.2

Data evaluation and communication

The integrated interface, processing and communication of the device enables easy operation of
the solar inverter. Monitoring of the operational status and signaling of operational failures are capa-
ble of being called up over the interface. The data interfaces enable the downloading of data which
can be evaluated with the aid of a PC system and allow continuous recording of operating data.
The best way of accessing this functionality is via a monitoring system connected to your inverter.
The read-out of the data over the integrated interface (RS485,BLE4.0,Zigbee,WIFI) is possible only
in solar operation.
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