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Installation and operating instructions
QX³ series
The following points must also be observed:
All standard and special national and local regulations for electrical
installations must be observed. These may vary from country to country.
4.8.1.1
The cables must be protected with an MCB as described above.
4.8.1.2
The provided standard cable lead-ins of the inverter are designed
for cables with an external diameter of 14-18 mm (QX³10000-18000) or
9-
17 mm (QX³4000-8000). Glands for larger cross-sections are also
available as an option.
When connecting the AC cable, please ensure that is led through the ring
core (QX³4000-8000)
In order to safeguard the designated protection class, please ensure that
the connection cable and the gland match. The correct PG gland will
prevent any water penetrating the plug connector. It also serves as
strain relief.
WARNING
Risk of fatal injury due to electric shock!
Disconnect the power supply connection before connecting the device to the
AC power supply grid!
Check for absence of voltage and secure the AC supply against being switched on
again!
WARNING
Dangerous electrical voltage!
Do not switch on the MCB until commissioning, when the PV generator and all
interfaces are connected.
WARNING
Danger of fire or explosion caused by over current and heating of the grid
supply cable if the MCB is dimensioned incorrectly!
Install a suitable MCB that complies with the technical data indicated in Chapter
10.1 between the PV inverter and the feed meter!
Cable preparation:
The following example refers to colour coding of the cores for installation,
protective and low-voltage cables in compliance with HD 308 S2.
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Q3 ENERGIE Installation and operating instructions QX³ series
Version 1.0, Stand 27.04.2015
35/109
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