Anytime the inverter has been disconnected from the AC utility grid, use extreme caution, as
some components can retain charge sufcient to create a shock hazard and may need time to
dissipate the charge. To minimize occurrence of such conditions, comply with all corresponding
safety symbols and markings present on the unit and in this manual.
Clothing and protective devices
Appropriate Personal Protective Equipment (PPE) must be worn at all times when servicing
this equipment under any conditions which may subject personnel to hazardous voltages or
temperatures that are not touch-safe.
All operations on the equipment should be performed with properly electrically-insulated
instruments.
Location of safety notices and labels
Note the location of safety notices on the inverter for notication and protection. Labels must
not be hidden with external objects or parts such as rags, boxes, or other such equipment. They
should be cleaned periodically and always maintained in view.
Appropriate usage
The TRIO 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 specied environmental and mounting parameters stated in this manual, and adherence to
codes enforced by the jurisdiction, such as the National Electric Code. (See environmental conditions below and
environmental checks in Installation location, section 2.)
If installed indoors, the inverter must be inaccessible to unqualied persons.
Conditions of Use
WARNING!
This inverter utilizes a transformerless design and requires connected
array(s) to be oating 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
specications in the Appendix, section 7.
• The inverter is certied for use only with photovoltaic arrays connected to its input channel(s).
Do not connect batteries or other types of power sources.
• The inverter can only be used if all the technical requirements in this manual are observed
and applied.
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