ABB UNO-7.6-TL-OUTD-S-US-A Product Manual - Ppropriate Usage

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1- Introduction and safety

A

ppropriate usage

The UNO Inverter is a photovoltaic inverter that converts direct current of a connected PV array into alternating 

current and feeds that power into the AC utility grid. 

This inverter is designed for outdoor use, but can be used indoors if installed to specified environmental and 

mounting parameters stated in this manual, and adherence to the National Electric Code. See environmental 

conditions below and environmental check in section 2.

C

onditions of use

This inverter utilizes a transformerless design and requires connected arrays to be 

floating with respect to ground; it can be used only with photovoltaic modules that do 

not require one of the terminals to be grounded.

• 

The DC and AC operating currents MUST NOT exceed the limits documented in the 

technical specifications found in the data table in the appendix, section 7.

•  The  inverter  is  certified  for  use  only  with  photovoltaic  arrays  connected  to  its  input 

channel(s).  Do not connect batteries or other types of power sources.

E

nvironmental conditions

Adverse environmental conditions can lead to a reduction in performance. The equipment 

should be installed outdoors, but only in environmental conditions indicated in this manual.  

Care must be taken to provide adequate ventilation if installed indoors.

I

mproper or prohibited use

The following actions are dangerous and not consistent with acceptable practice under the 

terms of the warranty:

•  Installing the equipment in environments with flammable conditions.

• 

Using the equipment with safety devices not working or disabled.

• 

Using the equipment or parts of the equipment by connecting it to other machines or 

equipment, unless otherwise expressed.

• 

Modifying areas that are operator restricted and/or altering parts of the equipment in 

order to vary the performance or change its protection.

• 

Cleaning with corrosive products that may corrode parts of the equipment or with products 

that might generate electrostatic charges.

• 

Using or installing the equipment or parts of it without having read and correctly interpreted 

the contents of this manual.

•  Blocking airflow to the cooling fins (e.g., warming or drying rags) on the unit or accessory 

parts is dangerous and could compromise the inverter operation.