ABB MICRO-0.25-I-OUTD-US-208/240, Product Manual

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002TC
C
ontents
I
ntroduction and safety ...................................................................................................................... 7
Warnings in this document ...................................................................................................................7
Equipment safety warnings .................................................................................................7
General installation warnings..............................................................................................8
Electrical connection warnings ...........................................................................................8
Safety instructions .................................................................................................................................8
Thermal and voltage hazard ................................................................................................9
Location of safety notices and labels .................................................................................9
Appropriate usage ..................................................................................................................................9
Improper or prohibited use ..................................................................................................9
Available models ..................................................................................................................................10
Regulatory label ..................................................................................................................10
Product identification label ................................................................................................12
I
nstallation location .......................................................................................................................... 13
Transportation and handling ...............................................................................................................13
Incoming inspection .............................................................................................................................13
Overall dimensions and minimum clearances ..................................................................................14
Environmental check of installation location ....................................................................................14
Installation position ..............................................................................................................................15
Choice of AC cable ...............................................................................................................................16
M
ounting and wiring ....................................................................................................................... 19
Assembly diagram ................................................................................................................................19
Assembly instructions .........................................................................................................................20
DC grounding electrode conductor coupling all the MICRO inverters ........................21
DC grounding electrode conductors for each MICRO inverter .....................................22
Installing the AC trunk end cap .........................................................................................26
Use of the AC trunk unlock tool ........................................................................................26
Wiring details ........................................................................................................................................27
Load protection switch (AC disconnect switch) .............................................................27
Differential protection downstream of the inverter .........................................................28
Choosing the interface protection system and device downstream of the inverter ..28
AC grid connections ............................................................................................................................28
Characteristics and sizing of the line cable .....................................................................29
Wiring of AC cable ..............................................................................................................29
O
perations ........................................................................................................................................ 31
Commissioning .....................................................................................................................................31
Sequence of operations .....................................................................................................31
LED indicators .....................................................................................................................32