CENTRAL HV SERIES INVERTERS

Solar Inverters

K25HV - K33HV - K40HV - K64HV - K80HV - K100HV - K200HV - K250HV


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 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 touch screen in a convenient 4.3' format. This is an evolution that allows to control the main parameters of the PV system and interact with it monitoring the operation through the interactive experience of touch functions. The device is able to perform the functions of data logger, allowing the storage of all parameters with a historical database of more than 5 years and view graphically all the variables (power, energy, AC / DC, AC / DC voltage, frequency , temperature and reactive power inverter). The new display has a USB port for data backup and the software upgrade; furthermore is compatible both with PVSER proprietary protocol on the network and with ModBUS/TCP, thus offering easy insertion in any management BMS or data analysis using an Ethernet network.

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.

MODELS
SIRIO K25 HV
SIRIO K33 HV
SIRIO K40 HV
SIRIO K64 HV
SIRIO K80 HV
SIRIO K100 HV
SIRIO K200 HV
SIRIO K250 HV
Rated power alternating current
25KVA
33KVA
40KVA
64KVA
80KVA
100KVA
200KVA
250KVA
Maximum power alternating current
28kW
33kW
40kW
64kW
80kW
100kW
200kW
250kW
INPUT
Maximum direct voltage in an open circuit
880Vcc
MPPT Full Rating Range
450÷760Vcc
Working range
450÷760Vcc
Maximum imput current
59Acc
Initial feeding voltage
540Vcc
Ripple voltage
<1%
Input number
1
MPPT number
1
D.C. connectors
Screw terminals
OUTPUT
Operating voltage
400Vca
Operating interval
340÷460Vca
Maximum power interval
340÷460Vca
Frequency interval
47,5÷51,5Hz
Settable frequency interval
47÷53Hz
Nominal current
36Aca
Maximum current
46Aca
Fault level contribution
68Aca
Current Harmonic Distorsion (THDi)
<3%
Power factor
from 0,9 ind. to 0,9 cap.
Galvanic separation
LF trafo
A.C. connectors
Screw terminals
SYSTEM
Maximum efficiency
96,40%
European efficiency
95,30%
Stand-by consumption
<32W
Night consumption
<32W
Internal protection
MCCB AC side and Switch DC side
Insulation operating protection
Yes
Detecting earth leakage
Yes
Heat dissipation
Controlled fans
Operating temperature
0°C÷45°C (without derating)
Storage temperature
-20°C÷70°C
Humidity
0÷95% non-condensing
CHARACTERISTICS
Acoustic noise
<66dBA
Protection level
IP20
Colour
RAL 7035
Weight
350Kg
Dimensions
555x720x1400mm
COMMUNICATION
Communication interface
Ethernet, USB, 2xRS232 as standard, RS485 optional (slot version)
Display
Color LCD touch screen
Protocols
ModBUS and ModBUSTCP
CERTIFICATES AND APPROVALS
EMC
EN61000-6-3, EN61000-6-2, EN61000-3-11, EN61000-3-12
Safety
EN62109-1, EN62109-2
Directives
Low Voltage Directive: 2006/95/EC, EMC Directive: 2004/108/EC
Guide for connection to the power grid
CEI 0-21, CEI 0-16, A70, VDE AR-N-4105, VDE 0126-1-1, G59/2, Real Decreto 1699-2011, PO12.3