Central Inverters
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Central Inverters Sirio Central inverters allow direct connection to the low voltage grid ensuring the galvanic separation compared to direct current installations. The generous rating of the transformer and the other inverter components provides a return of the highest among the machines of the same category. Maximum energy and safety The Maximum Power Point Tracking (MPPT) research algorithm implemented in the control system of Sirio Central inverters allows full use of the photovoltaic generator in any radiation and temperature conditions, making the plant work constantly at maximum efficiency. In the absence of solar radiation the converter goes on standby and resumes normal operation when there is radiation again. This feature reduces self-consumption to a minimum and maximizes energy efficiency. The use of speed-controlled fans helps to optimize the overall efficiency of the inverter. Fan operation that is linked to the temperature also increases the expected lifespan and reduces costs incurred for extraordinary maintenance. All these design features, the careful choice of components and guaranteed quality of production according to ISO9001 standards make the threephase inverters Sirio extremely efficient and reliable and guarantee maximum energy production. thermal derating Derating as a function of temperature aimed to safeguard against overheating inverter semiconductors in the case of environments with temperatures exceeding installation specifications or for forced ventilation faults, without causing a complete block of the inverter itself. Sirio Central models ensure rated power output up to 45°C environment. If this threshold is exceeded, the inverter gradually decreases the power fed into the network in such a way as to maintain heat sink temperature within the maximum limit. Once back in the range of thermal normal operation, the inverter restores the optimal working point, again ensuring maximum power transfer. easy installation and maintenance The footprint of these devices has been considerably reduced and there is no need to leave space at the side or back of the equipment since the electronics and power components are fully accessible from the front. Fully automatic operation ensures ease of use and facilitates installation and startup, thus avoiding installation and configuration errors which could lead to failures or reduced plant productivity. Personalized solutions AROS is able on request to supply Sirio Central inverters specific to the client’s needs. Available options include the integrated isolation control and the pole/ earth connection kit (positive or negative) that is required for some kinds of photovoltaic modules. certificate of Factory inspection Sirio Central inverters meet “Made in EU” criteria as they are designed, manufactured and tested in Italy. centRal inVeRteRs

Central Inverters RAOS User Interface Sirio Central inverters provide a series of new user interfaces composed of an LCD colour touch screen in a convenient 4.3” format. The millions of colours and quantity of features greatly enrich the user's interaction experience with the solar inverter. Intuitive icons and brief messages in the set language guide users through the simple menu structure, allowing them to access all reference, configuration and inverter control features. In particular, it is possible to view a daily energy production graph and the instantaneous value of power...

CENTRAL INVERTERS MODEL Sirio K12 Approximate power of the photovoltaic field 14 kWp max Qgrid connection CRITERIA The entire range can be configured according to the following standards: - CEI 0-21 - CEI 0-16 - VDE AR-N-4105 - VDE 0126-1-1 - G59/2 - Real Decreto 1663-2000 - PO12.3 INPUT Maximum DC voltage in an open circuit MPPT operating range Working range Maximum input current Initial feeding voltage Ripple voltage Number of inputs MPPT number D.C. connectors Operating voltage Operating interval Maximum power range Frequency range Settable frequency range Nominal current Maximum...

CENTRAL INVERTERS MODEL Sirio K15 Approximate power of the photovoltaic field 18 kWp max Qgrid connection CRITERIA The entire range can be configured according to the following standards: - CEI 0-21 - CEI 0-16 - VDE AR-N-4105 - VDE 0126-1-1 - G59/2 - Real Decreto 1663-2000 - PO12.3 INPUT Maximum DC voltage in an open circuit MPPT operating range Working range Maximum input current Initial feeding voltage Ripple voltage Number of inputs MPPT number D.C. connectors Operating voltage Operating interval Maximum power range Frequency range Settable frequency range Nominal current Maximum...

CENTRAL INVERTERS MODEL Sirio K18 Approximate power of the photovoltaic field 21 kWp max Qgrid connection CRITERIA The entire range can be configured according to the following standards: - CEI 0-21 - CEI 0-16 - VDE AR-N-4105 - VDE 0126-1-1 - G59/2 - Real Decreto 1663-2000 - PO12.3 INPUT Maximum DC voltage in an open circuit MPPT operating range Working range Maximum input current Initial feeding voltage Ripple voltage Number of inputs MPPT number D.C. connectors Operating voltage Operating interval Maximum power range Frequency range Settable frequency range Nominal current Maximum...

CENTRAL INVERTERS Qgrid connection CRITERIA The entire range can be configured according to the following standards: - CEI 0-21 - CEI 0-16 - VDE AR-N-4105 - VDE 0126-1-1 - G59/2 - Real Decreto 1663-2000 - PO12.3 MODELS Sirio K25 Sirio K25 HV Approximate power of the photovoltaic field Rated AC power Maximum AC power INPUT Maximum DC voltage in an open circuit MPPT operating range Working range Maximum input current Initial feeding voltage Ripple voltage Number of inputs MPPT number D.C. connectors OUTPUT Operating voltage Operating interval Maximum power range Frequency range Settable...

CENTRAL INVERTERS Qgrid connection CRITERIA The entire range can be configured according to the following standards: - CEI 0-21 - CEI 0-16 - VDE AR-N-4105 - VDE 0126-1-1 - G59/2 - Real Decreto 1663-2000 - PO12.3 MODELS Sirio K33 Sirio K33 HV Approximate power of the photovoltaic field Rated AC power Maximum AC power INPUT Maximum DC voltage in an open circuit MPPT operating range Working range Maximum input current Initial feeding voltage Ripple voltage Number of inputs MPPT number D.C. connectors OUTPUT Operating voltage Operating interval Maximum power range Frequency range Settable...