Othonos 39, 17343
Agios Dimitrios Athens
08:30 - 16:30
+30 2109966555
+30 2109969444

HV-MT Central Inverters(100-800 kW)

HV-MT Central Inverters(100-800 kW)

Inverters (On-Grid Inverter)

In order to increase overall plant efficiency, the Sirio HV-MT Central inverters do not have an integrated transformer. This feature and the meticulous design make them ideal for use in medium- high power plants connected to a medium voltage grid.


Technical Specifications

Product Brochure

Main Features:

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.
For ensuring higher standards of safety and fire prevention in case of a internal fault in the converter, the Sirio HV-MT 330, 500 and 800 units are equipped as standard with a motorized disconnecting on DC side with undervoltage protection. Moreover, the presence of 8 or 16 inputs, protected by fuses placed on both poles, ensures the protection of the lines coming from field switchboards; this arrangement allows to avoid secondary level switchboards (DC-boxes) during design phase) with a consequent economic saving. 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 ISO 9001 standards make the three-phase 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.

User Interface
Sirio Central inverters provide a series of new user interfaces composed of an LCD colour touchscreen 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.

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.

Customized solutions
AROS is able on request to supply HV-MT 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.


  • Display: Colour LCD touch screen
  • Communication interface Ethernet, USB, 2xRS232, 2 inputs for remote controls
    (inverter trip and EPO) and 3 operating status signal relays.
  • RS485 optional (slot version)
  • Protocol
    ModBUS and ModBUS/TCP

Rated AC power 100KVA200KVA250KVA330KVA500KVA800KVA
Maximum AC power100KW (cosφ=1)200KW (cosφ=1)250KW (cosφ=1)330KW (cosφ=1)500KW (cosφ=1)800KW (cosφ=1)


Maximum DC voltage in an open circuit880Vdc880Vdc1000Vdc
MPPT at full rating range450÷760Vdc450÷760Vdc530÷820Vdc
Operating interval450÷760Vdc450÷760Vdc450÷760Vdc
Maximum input current245Adc500Adc590Adc780Adc1180Adc1600Adc
Threshold voltage for grid supply540Vdc540Vdc600Vdc
Ripple voltage<1%<1%<1%
Input number1812
MPPT number111
D.C. connectorsBusbarBusbarΜπάρες


Operating voltage270Vac270 Vac320Vac
Operating range245÷300Vac (1)245÷300Vac(1)288÷350Vac(1)
Maximum power range245÷300Vac245÷300Vac288÷350Vca
Frequency range47,5÷51,5Hz (1)47,5÷51,5Hz(1)47,5÷51,5Hz(1)
Frequency range set up47÷53Hz47÷53Hz47÷53Hz47÷53Hz
Rated current214Aac428Aac535Aac145Aca289Aca1450Aac
Maximum current277Aac554Aac630Aac160Aca321Aca1600Aac
Total Harmonic Distorsion (THDi)<3%<3%
Power factorfrom 0,9 ind. to 0,9 cap.(1)from 0,9 ind. to 0,9 cap.(1)
Galvanic separationNoNo
A.C. connectorsBusbarBusbar


Maximum efficiency98,10%98,10%
European efficiency97,50%97,50%
Stand-by consumption<32W<32W
Overnight consumption<32W<32W
Built-in protectionsAutomatic circuit breaker AC side – Switch-disconnectors DC sideAutomatic circuit breaker AC side – Switch-disconnectors DC side
Protection durring stand-by operations YesYes
Hearth leakage detectionYesYes
Heat dissipationControlled fansControlled fans
Operating temperature-20°C÷45°C (nο derating)-20°C÷45°C (nο derating)
Storage temperature-20°C÷70°C-20°C÷70°C
Humidity5÷95% non-condensing5÷95% non-condensing
Weight420 Kg1100 Kg1150 Kg 1200 Kg 1340 Kg 1580 Kg


EMCEN61000-6-3, EN61000-6-2, EN61000-3-11, EN61000-3-12EN61000-6-3, EN61000-6-2, EN61000-3-11, EN61000-3-13
SafetyEN62109-1, EN62109-2EN62109-1, EN62109-3
DirectivesLow Voltage Directive: 2006/95/EC, EMC Directive: 2004/108/ECLow Voltage Directive: 2006/95/EC, EMC Directive: 2004/108/EC
Grid managementCEI 0-16, A70, PO12.3CEI 0-16, A70, PO12.3
(1) These values can vary depending on the local regulations.    


            Download the Pdf here