ABB UNO-DM-2.0-TL-PLUS Manual page 5

Description of the equipment ..............................................................................................................39
Operating diagram ................................................................................................................39
Mutual connection of multiple inverters ................................................................................40
Notes on the system sizing ...................................................................................................40
Operating diagram ................................................................................................................................41
Functionality and components of the equipment .................................................................42
Topographic diagram of the equipment ................................................................................45
Safety devices .......................................................................................................................................48
Anti-Islanding ........................................................................................................................48
Ground fault of the photovoltaic panels ................................................................................48
Other safety devices .............................................................................................................48
L
ifting and transport ........................................................................................................................ 49
General conditions ...............................................................................................................................49
Transport and handling .......................................................................................................49
Lifting .....................................................................................................................................49
Unpacking and checking ......................................................................................................49
List of components supplied .................................................................................................50
Weight of the modules of the equipment ..............................................................................51
I
nstallation ......................................................................................................................................... 52
General conditions ...............................................................................................................................52
Environmental checks ...........................................................................................................53
Installations above 2000 metres ...........................................................................................53
Wireless signal environmental checks ..................................................................................54
Recommendations for the wireless signal power .................................................................56
Installation position ................................................................................................................57
Wall mounting .......................................................................................................................................58
Wireless antenna mounting ................................................................................................................59
Opening the front cover .......................................................................................................................60
Preliminary operations for connection of the PV generator ...........................................................61
Checking the correct polarity of the strings ..........................................................................61
Checking of leakage to ground of the photovoltaic generator ..............................................61
Selection of differential protection downstream of the inverter ............................................61
Independent or parallel input channels configuration .....................................................................63
Channel configuration examples ..........................................................................................64
Independent channel configuration (default configuration) ..................................................65
Parallel channel configuration ..............................................................................................65
Input connection to PV generator (DC side) .....................................................................................66
Installation procedure for quick-fit connectors .....................................................................68
Distribution grid output connection (AC side) ..................................................................................72
Characteristics and sizing of the line cable ..........................................................................72
Load protection switch (AC disconnect switch) ....................................................................73
Installation of the cable on the AC output connector ............................................................74
Connection for the AC output connector to the inverter .......................................................76
Installation of the external protective grounding cable .........................................................77
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