Safety instructions
These servicing instructions are for use by qualied personnel only. To reduce the risk of electric shock, do not
perform any servicing other than that specied in the operating instructions. Be sure all ammable materials
including construction items are away from the unit. Do not install the inverter in or near potentially explosive areas.
The TRIO is not provided with an isolation transformer and is intended to be installed per NFPA 70, 690.35 with an
ungrounded PV array. These models have no grounded input conductors. Install the TRIO inverter in accordance
with the electrical standards prescribed by the applicable National Electric Code (NEC), and/or by other local codes
and regulations.
General information
The equipment has been manufactured in accordance with the strictest accident-prevention
regulations and supplied with safety devices suitable for the protection of components and
operators. Inform ABB about non-standard installation conditions.
It is essential to provide operators with correct information. They must read and comply with the
technical information given in the manual and any other attached documentation. The instructions
given in the manual do not replace the information and warnings on the safety labels mounted
on the product. They do not replace the safety regulations enforced in the country of installation.
Maintenance operations must be carried out according to the maintenance section 6 of this
manual. Do not use the equipment if any operating anomalies are found. Liabilities arising from
commercial components are delegated to their respective manufacturers.
Thermal and voltage hazard
Depending upon ambient temperatures during operation and immediately following
shutdown, surface temperatures on the cooling ns (heat sink) and some areas of
the chassis may be extremely hot to the touch.
Prior to touching any part of the inverter, use care to ensure surfaces and equipment are at touch-
safe temperatures and voltages before proceeding.
The customer and/or installer must appropriately instruct all personnel who may come near
the equipment, and highlight, if necessary with notices or other means, the hazardous areas or
operations (magnetic elds, hazardous voltages, high temperatures, possibility of discharges,
generic hazard, etc.).
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