103 solar pv
ABB Low Voltage Contractor 0312
8
The components of photovoltaic systems
The efficiency and quality of a system are measured
by the efficiency and quality of each individual component
An accurate choice of components, especially the
modules and inverters, is of fundamental importance if a
photovoltaic system is to be a success. Before it can be
considered a good investment, a photovoltaic system
must be able to function efficiently for at least 20 years
in all weathers and under the blazing sun.
What is commonly called the “BOS” (Balance of System), i.e.
the “rest of the system” (electromechanical equipment for
protection, control and isolation purposes, cables),
undoubtedly plays an important role in ensuring that people
and the buildings connected to the system are properly
protected, and that there is an adequate production of energy
over the years. From an economic viewpoint, it is even more
important for each individual component of a photovoltaic
system to be chosen on the basis of the warranties provided
by the product and by its manufacturer than it is for a normal
electric system. This is because the operating specifications
of each device must remain unchanged throughout the entire
life cycle of the system and the relative investment.
Always ready to meet any new demand from the market, ABB
has developed a whole range of reliable products dedicated
to photovoltaic applications and able to meet all installation
requirements, from the string on the direct current side
through to the alternate current grid connection point.
ABB’s products include string boxes, miniature circuit
breakers, switch-disconnectors, residual current-operated
circuit breakers, interface relays, energy meters, fuse
disconnecting switches and fuses, surge arresters, consumer
units and enclosures suitable for outdoor installation,
all specially designed for these applications. ABB can also
provide a series of “plug & operate” solutions, i.e. finished,
wired and certified switchgear able to suit the requirements of
a vast range of installations: from the individual string for
domestic use to the large solar park.
AC Side
Solar PV
products for renewable energy
Residual devices
Enclosures
Miniature circuit breakers
Surge suppressors
Metering devices
Isolators
Consumer
