New Sirio EVO transformerless inverters
11 May 2012
AROS unveils the new range of inverters designed for future standards.
The new Sirio EVO transformerless range, designed to meet the demands of future standards and requirements of small to medium power plants, features innovative technologies and high quality components. Control over the maximum DC current fed into the network, the reactive power, and the ability to overcome so-called “voltage dips” (LVFRT) mean that these inverters are already able to be certified according to the latest standards for connection to the electrical mains, for example CEI 0-21 in Italy and VDE-AR-N-4105 in Germany.
The innovative digital control of all power stages and redundancy protection devices, particularly on the output stage, ensure operation, supply continuity and a low susceptibility to network disconnections, preventing unwanted disconnections in the presence variations or micro power failures. The state-of-the-art components, identified by AROS Solar Technology research and development and used for this type of inverter, allow a conversion efficiency up to 98%, ensuring high quality power in all conditions.
Sirio EVOs are equipped with 2 innovative MPPT devices which make maximum use of photovoltaic generator power and allow the management of strings with different orientations and inclinations, facilitating the installer in various configurations. The wide input range combined with an IP65 protection rating allow outside placement of the inverter and simplify wiring on the DC side, reducing losses and limiting installation costs. The integrated DC switch disconnector, standard on the new range, makes it possible to isolate the inverter quickly and safely in case of emergency or routine maintenance.
The presence of the LCD display on the front panel allows immediate viewing of all the essential information (power, energy produced, any faults etc.), while standard serial RS485 and USB connection (ModBUS and Ethernet optional) also makes it possible to remotely control all the information available locally.
The inverter also has a built-in datalogger that stores instantaneous data with a settable frequency between 5 and 10 minutes, in addition to saving production data on a daily basis for a period of about two years. In addition, by means of a simple setting, a night-time consultation function can be set to allow inverter interrogation through the RS485/422 bus, USB or slot cards during the night when the device is off.
Sirio EVO inverters meet “Made in EU' criteria as they are designed, manufactured and tested in Italy. Thanks to the certification issued by IMQ, AROS guarantees that installations carried out with their products can access the additional 10% on the incentive tariff, as required by the GSE (Energy Services Operator) in the Rules of Application for Recognition of Incentive Tariffs envisaged in the Italian Ministerial Decree of 5 May 2011 (Fourth Feed-In Tariff). The new Sirio EVO single phase 1500 W to 6000 W models will be available on the market from May. The three phase 10 kW and 12.5 kW models will be available in the second half of the year.
For this new range, as with for the development of all new products, AROS personnel have devoted extensive resources to environmental impact assessment. Printed circuit boards, wiring, adhesives, connectors and other components are free of toxic substances such as CFCs, HCFCs, lead, mercury, brominated flame retardants (BFRs) and polyvinyl chloride (PVC). In addition, packaging has been reduced compared to the past, using fully recyclable material. This shows that, for AROS, environmental quality is not born from a business need to bear a label or a certificate, but from a belief that these are values on which to base a business that has the future in mind.